1. An electrochromic aperture is characterized by comprising a first transparent substrate, a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conducting layer and a second transparent substrate which are sequentially overlapped;

the voltage at which the electrochromic aperture starts to brighten gradually increases from the inside to the outside or the voltage at which the electrochromic aperture starts to darken gradually decreases from the inside to the outside.

2. The electrochromic aperture according to claim 1, characterized in that the degree of cross-linking of the ion-transfer layer increases gradually from the inside outwards; or the voltage of the electrochromic layer starting to brighten from the electrochromic material inside out is gradually increased or the voltage starting to darken is gradually decreased.

3. The electrochromic aperture according to claim 1 or 2, characterized in that the thickness of the electrochromic layer, or the electrochromic layer and the ion storage layer, increases gradually from the inside outwards.

4. An electrochromic aperture is characterized by comprising at least two superposed electrochromic units which are independent from each other, wherein each electrochromic unit comprises a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer and a second transparent conducting layer which are superposed in sequence; adjacent electrochromic units are separated by a transparent substrate;

the electrochromic layer and the ion storage layer are in a circular or circular ring shape with the central axis of the electrochromic aperture as the center, the ion storage layer and the electrochromic layer in the same electrochromic unit are mutually aligned, and the projections of the electrochromic layers in different electrochromic units along the central axis direction of the electrochromic aperture are not overlapped and the boundaries are mutually aligned;

preferably, the thickness of the electrochromic layer, or the electrochromic layer and the ion storage layer, is gradually increased from the inside to the outside.

5. An electrochromic aperture is characterized by comprising a first transparent substrate, a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conducting layer and a second transparent substrate which are sequentially overlapped;

the electrochromic aperture is made of the same material from inside to outside, and no groove is formed in the electrochromic aperture;

preferably, the thickness of the electrochromic layer, or the electrochromic layer and the ion storage layer, is gradually increased from the inside to the outside.

6. An electrochromic aperture is characterized by comprising a first transparent substrate, a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conducting layer and a second transparent substrate which are sequentially overlapped;

the electrochromic diaphragm is of a curved surface structure, and the curvature of the electrochromic diaphragm is the same as that of the surface of the concave lens or the convex lens in the achromatic lens combination; or the shape of the electrochromic aperture is the same as the shape of the concave or convex lens in the achromatic lens combination;

preferably, the thickness of the electrochromic layer, or the electrochromic layer and the ion storage layer, is gradually increased from the inside to the outside.

7. The electrochromic aperture according to any one of claims 1 to 6, wherein the first transparent conductive layer and the second transparent conductive layer are each independently formed from indium tin oxide, aluminum zinc oxide, fluorine doped tin oxide, silver nanowires, graphene, carbon nanotubes, metal mesh transparent conductive electrodes, or silver nanoparticles;

preferably, the material of the ion storage layer is one or a combination of at least two of oxides or complexes formed by metal elements in groups IIIB, IVB, VB, VIB, VIIB, VIII, IB and IIB and capable of storing ions during electrochemical reaction;

preferably, the metal is selected from the group consisting of Ti, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ir, Ni, Cu and Zn;

preferably, the complex is selected from Prussian Green, Prussian white, Prussian Brown, Prussian blue, KFeFe (CN)₆FeNiHCF, FeHCF, NiHCF or iron compound X_mY_n{Fe(CN)₆One or a combination of at least two of them, wherein X is Na⁺Or K⁺Y is Fe³⁺、Co³⁺、Ni⁺、Mn²⁺、Zn²⁺Or Cu²⁺；

Preferably, the material of the ion storage layer further includes a polymer having redox activity;

preferably, the thickness of the ion storage layer is 1 to 10000 nm;

preferably, the composition of the ion transfer layer includes an organic salt and/or an inorganic salt, and a polymer;

preferably, the inorganic salt is selected from one or a combination of at least two of lithium salt, sodium salt, potassium salt, magnesium salt, calcium salt and aluminum salt;

preferably, the organic salt is an ionic liquid;

preferably, the ion transfer layer is a gel state electrolyte layer, a liquid state electrolyte layer or a solid state electrolyte layer, further preferably a solid state flexible electrolyte layer;

preferably, the weight percentage of the neutral organic small molecules contained in the ion transfer layer is less than or equal to 30 wt%, and the molecular weight of the neutral organic small molecules is less than or equal to 3000;

preferably, the polymer in the solid electrolyte layer is a solid electrolyte polymer with covalently bonded plasticizing groups;

preferably, the solid electrolyte polymer is a copolymer of a monomer or oligomer and an ion conductive polymer, the side chain of the monomer or oligomer has a plasticizing group, and further, the composition of the solid electrolyte layer further comprises a monomer or oligomer segment with a crosslinking group on the side chain;

preferably, the solid electrolyte polymer is a plasticized linear polymer and an ion-conducting polymer which are connected by chemical bonds, the glass transition temperature of the plasticized linear polymer is lower than-20 ℃, and further, the composition of the solid electrolyte layer also comprises a monomer or a polymer with a crosslinking group on a side chain, and the monomer or the polymer with the crosslinking group on the side chain is connected with the plasticized linear polymer and the ion-conducting polymer by chemical bonds;

preferably, the solid electrolyte polymer is a polymer with a plasticizing group on a side chain and a glass transition temperature lower than-20 ℃ and an ion conducting polymer which are connected by chemical bonds, and further, the composition of the solid electrolyte layer also comprises a monomer or a polymer with a crosslinking group on a side chain, and the monomer or the polymer with the crosslinking group on the side chain is connected with the polymer with the plasticizing group on the side chain and the glass transition temperature lower than-20 ℃ and the ion conducting polymer by chemical bonds;

preferably, the solid electrolyte polymer is a brush polymer having a flexible polymer main chain, ion-conductive side chains, and immiscible side chains, and further, the composition of the solid electrolyte layer further includes a monomer or oligomer having a crosslinking group on a side chain, the monomer or oligomer having a crosslinking group on a side chain being chemically bonded to the brush polymer in a block copolymerization form;

preferably, the thickness of the ion transfer layer is 0.1 to 200 μm;

preferably, the material of the electrochromic layer comprises one or a combination of at least two of electrochromic metal oxide, polydecylviologen and its derivatives, polyaniline and its derivatives, polypyrrole and its derivatives, polythiophene and its derivatives, poly (3, 4-ethylenedioxythiophene) and its derivatives, polythieno [3,4-b ] [1,4] dioxepane and its derivatives, polyfuran and its derivatives, polyfluorene and its derivatives, and polycarbazole and its derivatives, and/or a copolymer of a monomer or oligomer of the above-mentioned polymer and an electron-deficient monomer;

preferably, the electron-deficient monomer is selected from one or a combination of at least two of benzothiadiazole, benzoselenadiazole, benzoxazole, benzotriazole, benzimidazole, quinoxaline and pyrrolopyrrole dione;

preferably, the electrochromic layer has a thickness of 1 to 10000 nm;

preferably, the material of the first transparent substrate and the second transparent substrate is each independently glass or a flexible substrate material;

preferably, the flexible substrate material is PET, cyclic olefin copolymer or cellulose triacetate;

preferably, the total thickness of the electrochromic aperture is below 5 mm.

8. An aperture lens combination, characterized in that it comprises a combination of concave and convex lenses for achromatization, and an electrochromic aperture according to claim 6 or 7 affixed to the surface of the concave or convex lens;

or the aperture lens combination comprises a concave lens and a convex lens combination for achromatization, and the concave lens or the convex lens is the electrochromic aperture of claim 6 or 7.

9. A method for multi-stage regulation of an electrochromic aperture is characterized in that the method is to use the electrochromic aperture as claimed in claim 5, different voltages are applied to the center and the edge of the electrochromic aperture, and the voltage at the center is greater than that at the edge, so that multi-stage regulation is realized.

10. A lens module, characterized in that the lens module comprises an achromatic lens combination, an electrochromic aperture as claimed in any one of claims 1 to 4, an exposure controller, an image sensor, a pulse voltage controller, a light intensity sensor, a photosensitive element, a circuit board and a chip;

the centers of the achromatic lens combination, the electrochromic aperture, the exposure controller and the image sensor are on the same optical axis;

or comprises the aperture lens combination, the exposure controller, the image sensor, the pulse voltage controller, the light intensity sensor, the photosensitive element, the circuit board and the chip of claim 8;

the centers of the aperture lens combination, the electrochromic aperture, the exposure controller and the image sensor are on the same optical axis.

Background

With the technical development of mobile terminals such as mobile phones and tablet computers, most mobile terminals are provided with lens modules. The lens module can be divided into an aperture-fixed type and an aperture-adjustable type. The lens module with the adjustable diaphragm is usually a mechanical diaphragm, and a diaphragm adjusting device with a complex structure needs to be arranged, so that the lens module has a large volume and high requirements on manufacturing and assembling processes. The lens module with the fixed diaphragm has the advantage of simple structure, and the lens module with the fixed diaphragm is generally adopted by the mobile terminal due to the size limitation. However, the light flux of the lens module with a fixed aperture is fixed, which has a very bad influence on the photographing clarity under strong light and weak light, and the depth of field cannot be effectively controlled, and the effect of blurring the background cannot be achieved.

CN 104903788A discloses an electro-optical aperture comprising a stack of a front transparent conductor medium, an electrolyte medium, an active electrochromic medium and a rear transparent conductor medium, and wherein the front transparent conductor medium and the rear transparent conductor medium are directly connected to each other by means of a conductive section located within the imaging path. CN 108519657a discloses a lens module and a mobile terminal, wherein the lens module includes a voltage applying element, the voltage applying element is electrically connected to an electrochromic film, and the electrochromic film includes a first light-transmitting conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer and a second light-transmitting conductive layer, which are sequentially disposed on a light-transmitting substrate. The electro-optic aperture or the electrochromic film can realize the change of light transmittance according to the difference of an external electric field, thereby realizing the adjustment of luminous flux; and the thickness is small, the Z-axis height of the lens module can not be obviously increased, and the camera module is suitable for the camera module of the portable consumer electronic equipment.

However, the existing electrochromic aperture still has many defects, such as the aperture capable of being adjusted and controlled in multiple stages, the conductive layer of the existing electrochromic aperture is usually etched with a groove, which can cause the electrochromic layer or the ion storage layer coated on the conductive layer to be uneven, and the aperture is not uniformly colored; the groove area is an unchanged color area, which can cause light leakage or light opacity, thereby affecting the imaging quality; the color change ranges of the diaphragms are the same from inside to outside, and the adjustable stage number difference of the diaphragms is not obvious; the aperture thickness is great, has restricted its application etc. in portable consumer electronic equipment's the module of making a video recording, needs further to solve.

Disclosure of Invention

In view of the defects of the prior art, an object of the present invention is to provide an electrochromic diaphragm, a method for manufacturing the same, and a lens module including the same. The preparation method provided by the invention can ensure that the aperture can realize multi-stage regulation and control, and effectively avoids the problems of nonuniform color change and the like caused by the traditional etching method. The electrochromic apertures with different structures provided by the invention can realize multi-stage adjustment and control of the aperture, avoid light leakage or light tightness caused by etching the groove, or realize more-different aperture stage adjustment, and the electrochromic aperture with the curved surface structure can be combined with an achromatic lens to thin a lens module.

In order to achieve the purpose, the invention adopts the following technical scheme:

in the existing electrochromic aperture, an annular groove is usually etched on a transparent conducting layer, the transparent conducting layer is divided into a plurality of areas from inside to outside, and each area can be independently applied with voltage control to realize multi-stage regulation and control of the electrochromic aperture; the ion storage layer and the electrochromic layer are coated after the transparent conductive layer is etched. However, this results in unevenness of the ion storage layer and the electrochromic layer at the grooves, uneven discoloration of the aperture, and an influence on image quality. It should be noted that, in the present invention, the term "from inside to outside" means from the center to the edge of the film layer surface in the radial direction.

In order to solve the problem, the invention provides the preparation method of the first aspect, and the etching operation is carried out after the ion storage layer and the electrochromic layer are coated, so that the problems of nonuniform color change and the like caused by the traditional etching method are effectively avoided while the aperture can be ensured to realize multi-stage regulation and control.

In a first aspect, the present invention provides a method for preparing an electrochromic aperture, comprising the steps of:

(1) forming a first transparent conductive layer on the first transparent substrate, and forming a second transparent conductive layer on the second transparent substrate;

(2) forming an ion storage layer on the first transparent conductive layer, and forming an electrochromic layer on the second transparent conductive layer;

(3) etching a plurality of annular grooves which take the central axis of the electrochromic diaphragm as the center on the ion storage layer and the first transparent conducting layer and/or the electrochromic layer and the second transparent conducting layer;

(4) compounding the ion storage layer and the electrochromic layer with an ion transfer layer, wherein the ion transfer layer is arranged between the ion storage layer and the electrochromic layer to obtain the electrochromic aperture;

or comprises the following steps: (1) forming a first transparent conductive layer on the first transparent substrate, and forming a second transparent conductive layer on the second transparent substrate;

(2) forming an ion storage layer on the first transparent conductive layer, and forming an electrochromic layer on the second transparent conductive layer;

(3) compounding the ion storage layer and electrochromic layer with an ion transfer layer disposed between the ion storage layer and electrochromic layer;

(4) etching is carried out from the side of the first transparent substrate, and a plurality of annular grooves with the central axis of the electrochromic aperture as the center are etched on the two layers of the first transparent substrate and the first transparent conducting layer or the three layers of the first transparent substrate, the first transparent conducting layer and the ion storage layer;

and/or etching from the side of the second transparent substrate, and etching a plurality of annular grooves with the central axis of the electrochromic diaphragm as the center on the two layers of the second transparent substrate and the second transparent conducting layer or the three layers of the second transparent substrate, the second transparent conducting layer and the electrochromic layer.

The method of etching is not particularly limited in the present invention, and, for example, laser etching may be used.

In a second aspect, the present invention provides an electrochromic aperture prepared by the preparation method of the first aspect. The structure of the electrochromic aperture comprises a first transparent substrate, a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conducting layer and a second transparent substrate which are sequentially overlapped;

in an embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the first transparent conductive layer and the ion storage layer;

in an embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the second transparent conductive layer and the electrochromic layer;

in one embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the first transparent substrate and the first transparent conductive layer;

in an embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the second transparent substrate and the second transparent conductive layer;

in one embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the first transparent substrate, the first transparent conductive layer, and the ion storage layer;

in an embodiment of the present invention, a plurality of annular grooves centered on a central axis of the electrochromic aperture are etched on the second transparent substrate, the second transparent conductive layer, and the electrochromic layer.

Although the preparation method of the first aspect effectively avoids the problems of color change uniformity and the like caused by the traditional etching method, the method of etching the groove can generate a non-color change area in the groove area while realizing multi-stage color change of the electrochromic aperture, so that light leakage or light opacity is caused, and the imaging quality is further influenced. Therefore, further improvements are still needed.

In order to solve the problem, the invention provides the following electrochromic diaphragm of the third aspect, because the projections of the electrochromic layers in different electrochromic units of the electrochromic diaphragm along the central axis direction of the electrochromic diaphragm are in seamless connection, and the color changing processes of the different electrochromic units can be independently controlled, the problem of light leakage or light impermeability caused by etching the groove is avoided while the multi-stage regulation and control of the diaphragm are realized.

In a third aspect, the present invention provides an electrochromic aperture, which includes at least two electrochromic units that are stacked and independent from each other, where the electrochromic units include a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, and a second transparent conductive layer that are stacked in sequence; adjacent electrochromic units are separated by a transparent substrate;

the electrochromic layer and the ion storage layer are in a circular or circular ring shape with the central axis of the electrochromic aperture as the center, the ion storage layer and the electrochromic layer in the same electrochromic unit are aligned with each other, and the projections of the electrochromic layers in different electrochromic units along the central axis direction of the electrochromic aperture are not overlapped and the boundaries are aligned with each other.

In the present invention, the phrase "the ion storage layer and the electrochromic layer are aligned with each other in the same electrochromic cell" means that projections of the ion storage layer and the electrochromic layer along the central axis direction of the electrochromic aperture coincide with each other in the same electrochromic cell.

The present invention is not particularly limited with respect to the method for producing the ion storage layer and the electrochromic layer of the above-described shapes, and as an example, the following two methods may be cited:

1. firstly, a hollowed annular shielding base material is covered above a transparent conducting layer, an electrochromic layer or an ion storage layer is coated above the transparent conducting layer, and the annular electrochromic layer or the ion storage layer can be obtained after the shielding base material is removed.

2. On the transparent conductive layer, which has been coated with an electrochromic layer or an ion storage layer, a ring-shaped electrochromic layer or an ion storage layer is laser etched, chemically etched, or physically wiped.

In order to solve the problem of light leakage or light impermeability caused by etching the groove, the present invention provides an electrochromic aperture of the following fourth aspect. Taking the example that the electrochromic aperture is divided into 3 areas from inside to outside, and the voltage for starting to brighten is 0.4V, 0.8V and 1.2V respectively, when the voltage is between 0.4V and 0.8V, only the area at the innermost circle starts to brighten; when the voltage is between 0.8 and 1.2V, the innermost circle and the middle area start to brighten; when the voltage is greater than 1.2V, the areas of the innermost turn, the middle and the outermost turn all start to brighten. When the voltage for the diaphragm to become dark is gradually reduced from inside to outside, the outer ring of the diaphragm can be darkened earlier than the inner ring by applying reverse voltage. Because the areas of the diaphragm from inside to outside are continuous, the problem of light leakage or light impermeability caused by etching the groove is avoided while the multi-stage regulation and control of the diaphragm is realized.

In a fourth aspect, the present invention provides an electrochromic aperture comprising a first transparent substrate, a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conductive layer and a second transparent substrate, which are sequentially stacked;

the voltage at which the electrochromic aperture starts to brighten gradually increases from the inside to the outside or the voltage at which the electrochromic aperture starts to darken gradually decreases from the inside to the outside.

In the present invention, there is no particular limitation on the method of achieving "the voltage at which the electrochromic aperture starts to become bright gradually increases from inside to outside or the voltage at which the electrochromic aperture starts to become dark gradually decreases from inside to outside", and as an example, the following two methods can be cited:

1. before the ion transfer layer is subjected to ultraviolet curing, the different areas are shielded by substances with different ultraviolet transmittances, so that the crosslinking degree of the ion transfer layer is gradually increased from inside to outside;

2. the transparent conducting layer is coated with electrochromic materials with different starting brightening or starting darkening voltages, and the fact that the voltage for starting brightening or the voltage for starting darkening from the electrochromic materials inside to outside is gradually increased or gradually reduced is guaranteed.

In order to solve the problem of light leakage or light impermeability caused by etching the groove, the present invention proposes an electrochromic aperture of the following fifth aspect. By using the electrochromic aperture described in the fifth aspect, and applying a high voltage to the center thereof and a low voltage to the edges thereof, the voltage across the aperture can be gradually reduced from the inside to the outside. Because the groove is not etched on the diaphragm, and the transmittance of any point on the diaphragm is related to the voltage of the point, when the voltage of the diaphragm is gradually reduced from inside to outside, the transmittance of the diaphragm can be gradually reduced from inside to outside, and the voltage is changed, so that the change control of different transmittances of the diaphragm can be realized, and the problems of light leakage or light impermeability caused by etching the groove are avoided while the multi-stage regulation and control of the diaphragm are realized.

In a fifth aspect, the present invention provides an electrochromic aperture comprising a first transparent substrate, a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conductive layer and a second transparent substrate, which are sequentially stacked;

the electrochromic light ring is made of the same material from inside to outside, and no groove is formed in the electrochromic light ring.

In a sixth aspect, the present invention provides a method for performing multi-stage control on the electrochromic aperture of the fifth aspect, where different voltages are applied to the center and the edge of the electrochromic aperture, and the voltage at the center is greater than the voltage at the edge, so as to implement multi-stage control.

In the present invention, the voltage applied to the aperture means a potential difference between the electrochromic layer and the ion storage layer, and when the potential difference is positive, the applied voltage is a positive voltage, and when the potential difference is negative, the applied voltage is a negative voltage. The "the voltage at the center is greater than the voltage at the edge" means that the voltage value at the center is greater than the voltage value at the edge, and for example, the voltage at the center is positive and the voltage at the edge is negative; or both the center and the edge are positive voltages, and the absolute value of the voltage at the center is greater than that at the edge; or the center and the edge are both negative voltage, and the absolute value of the voltage at the center is smaller than that at the edge.

The electrochromic diaphragm provided by the seventh and eighth aspects of the invention has the characteristic of flexibility and bendability by selecting materials of each layer, can be designed into a curved surface structure with the same curvature as that of a convex lens or a concave lens in an achromatic lens combination, and is attached to the surface of the concave lens or the convex lens of the achromatic lens combination, so that the combination of the diaphragm and the lens in the lens module is realized, and the lens module is further thinned. Alternatively, the aperture may be designed to have the same shape as the concave lens or the convex lens in the achromatic lens assembly, so that the aperture and the lens in the lens module may be combined instead of the concave lens or the convex lens, and the lens module may be further thinned. Since the refractive index of the electrochromic aperture changes very little during the color change, the achromatic function is not affected.

In a seventh aspect, the present invention provides an electrochromic aperture comprising a first transparent substrate, a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conductive layer and a second transparent substrate, which are sequentially stacked;

the electrochromic aperture is of a curved surface structure, and the curvature of the electrochromic aperture is the same as that of the surface of the concave lens or the convex lens in the achromatic lens combination.

In an eighth aspect, the present invention provides an electrochromic aperture comprising a first transparent substrate, a first transparent conductive layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conductive layer and a second transparent substrate, which are sequentially stacked;

the shape of the electrochromic aperture is the same as the shape of the concave or convex lens in the achromatic lens combination.

The existing electrochromic aperture is basically controlled in two stages, namely only two aperture stages are changed, even if three stages are achieved, if the color change ranges of three rings are consistent (assuming that the color change range of each ring is 20-90%), the integral transmittance of the minimum pupil of the electrochromic aperture is still large, the imaging effect is influenced, the stage difference of the aperture controllable is not obvious, namely the ratio of the maximum pupil transmittance to the minimum pupil transmittance is small, and improvement is needed.

In view of this problem, the present invention proposes an electrochromic diaphragm of the ninth aspect described below. By changing the thicknesses of the electrochromic layers in different areas, the color change range of each area is changed (for example, the electrochromic layer is divided into three areas from inside to outside, and the color change range of each area is 20-90%, 10-80% and 5-70% in sequence), so that the ratio of the maximum pupil transmittance to the minimum pupil transmittance is greatly increased, the adjustment of the aperture series with larger difference is realized, and the requirements of various shooting scenes are met.

In a ninth aspect, the present invention provides an electrochromic aperture, which has a structure: on the basis of the electrochromic aperture according to the second, third, fourth, fifth, seventh, and eighth aspects of the present invention, the thickness of the electrochromic layer, or the thickness of the electrochromic layer and the thickness of the ion storage layer are further set to gradually increase from the inside to the outside.

The thickness ratio of the edge to the center can be 1.1-10: 1; for example, 1.1:1, 2:1, 3:1, 4:1, 5:1, 6:1, 7:1, 8:1, 9:1, 10:1, etc. may be mentioned.

It should be noted that, since the thickness of the ion transfer layer is in the micrometer range, and the thickness of the electrochromic layer varies in the nanometer range, the actually caused variation in the thickness of the ion transfer layer is negligible.

According to the invention, the thickness of the electrochromic layer is gradually increased from inside to outside, so that the aperture has different color change ranges from inside to outside, thereby realizing more-different aperture stage number adjustment and meeting the requirements of various shooting scenes.

The method for realizing the thickness change is not particularly limited, and illustratively, a film layer with uniform thickness can be prepared firstly and then laser etching is carried out; or the thickness of the film layer may be controlled during the preparation of the film layer (e.g., by layered coating).

In an embodiment of the present invention, the materials of the first transparent conductive layer and the second transparent conductive layer are independently formed of ITO (indium-tin oxide), AZO (aluminum zinc oxide), FTO (fluorine doped tin oxide), silver nanowires, graphene, carbon nanotubes, metal grids, or silver nanoparticles.

In one embodiment of the present invention, the thickness of the first transparent conductive layer and the second transparent conductive layer is each independently 5 to 250 μm; for example, it may be 5 μm, 10 μm, 15 μm, 20 μm, 25 μm, 30 μm, 35 μm, 40 μm, 45 μm, 50 μm, 55 μm, 60 μm, 65 μm, 70 μm, 75 μm, 80 μm, 100 μm, 120 μm, 150 μm, 180 μm, 200 μm or 220 μm.

The first transparent conducting layer and the second transparent conducting layer are electrodes of the electrochromic diaphragm, and in practical application, a lead can be connected to lead out the electrodes.

In an embodiment of the present invention, the material of the ion storage layer is one or a combination of at least two of oxides or complexes formed by metal elements in groups IIIB, IVB, VB, VIB, VIIB, VIII, IB, and IIB, which can store ions during electrochemical reaction. For example, it may be a certain metal oxide, a combination of two or more metal oxides, a certain metal complex, a combination of two or more metal complexes, or a combination of a metal complex and a metal oxide. When more than two metal oxides are selected, this is referred to as a doped form, e.g. Nb₂O₅Doped with 5 wt% TiO₂。

Preferably, the metal is selected from the group consisting of Ti, V, Nb, Ta, Cr, Mo, W, Mn, Fe, Co, Ir, Ni, Cu and Zn.

Preferably, the complex is selected from Prussian Green, Prussian white, Prussian Brown, Prussian blue, KFeFe (CN)₆FeNiHCF, FeHCF, NiHCF or iron compound X_mY_n{ Fe (CN)6} or a combination of at least two thereof, wherein X is Na⁺Or K⁺Or metal ions mentioned in other documents, Y being Fe³⁺、Co³⁺、Ni⁺、Mn²⁺、Zn²⁺Or Cu²⁺Or metal ions as mentioned in other references.

Preferably, the material of the ion storage layer further includes a polymer having redox activity.

The polymer having redox activity may be a polymer formed from pyrrole and pyrrole derivatives, a polymer formed from thiophene and thiophene derivatives, a polymer containing TEMPO (tetramethylpiperidine nitroxide) and its derivatives, a polymer containing viologen and its derivatives, etc.

In one embodiment of the present invention, the ion storage layer may be a mixed system of a transition metal complex and a metal oxide, a mixed system of a transition metal complex and a polymer having redox activity, a mixed system of a metal oxide and a polymer having redox activity, or the like.

In one embodiment of the present invention, the ion storage layer has a thickness of 1 to 10000 nm; for example, it may be 1nm, 3nm, 5nm, 10nm, 20nm, 50nm, 80nm, 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 800nm, 1000nm, 2000nm, 5000nm, 8000nm, 10000nm, or the like.

The ion storage layer is mainly used for storing ions, the ions in the ion storage layer are transferred to the electrochromic layer when the power is on, and the electrochromic layer absorbs the ions to change the color.

In one embodiment of the present invention, the ion transfer layer is a gel electrolyte layer, a liquid electrolyte layer, or a solid electrolyte layer, more preferably a solid electrolyte layer, and still more preferably a solid flexible electrolyte layer.

In one embodiment of the present invention, the weight percentage of the neutral small organic molecules contained in the ion transfer layer is less than or equal to 30 wt%, such as 25 wt%, 20 wt%, 15 wt%, 10 wt%, 5 wt%, etc.; the molecular weight of the neutral organic micromolecule is less than or equal to 3000, such as 2500, 2000, 1500, 1000, 500 and the like.

In one embodiment of the present invention, the polymer in the solid electrolyte layer is a solid electrolyte polymer having a covalently bonded plasticizing group.

In one embodiment of the present invention, the solid electrolyte polymer is a copolymer of a monomer or oligomer and an ion conductive polymer, the monomer or oligomer has a plasticizing group in a side chain, and further, the composition of the solid electrolyte layer further includes a monomer or oligomer segment having a crosslinking group in a side chain.

The term "further" in the present invention means that, in the above definition, the composition of the solid electrolyte layer is provided by a copolymer comprising a monomer or oligomer and an ion-conducting polymer, and preferably, the copolymer further comprises a monomer or oligomer segment having a crosslinking group at a side chain; the same is explained for "further" in the following.

The plasticizing group and the plasticizing group refer to groups which can weaken the interaction between macromolecules and reduce the crystallinity of the macromolecules.

In one embodiment of the present invention, the solid electrolyte polymer is a plasticized linear polymer and an ion conductive polymer, which are chemically bonded, and the plasticized linear polymer has a glass transition temperature of less than-20 ℃, and further, the composition of the solid electrolyte layer further includes a monomer or a polymer having a cross-linking group on a side chain, and the monomer or the polymer having a cross-linking group on a side chain is chemically bonded to the plasticized linear polymer and the ion conductive polymer.

In one embodiment of the present invention, the solid electrolyte polymer is a polymer having a plasticizing group at a side chain and a glass transition temperature of less than-20 ℃ and an ion-conductive polymer, which are chemically bonded, and the composition of the solid electrolyte layer further includes a monomer or a polymer having a crosslinking group at a side chain, wherein the monomer or the polymer having a crosslinking group at a side chain is chemically bonded to the polymer having a plasticizing group at a side chain and a glass transition temperature of less than-20 ℃ and the ion-conductive polymer.

In one embodiment of the present invention, the solid electrolyte polymer is a brush polymer having a flexible polymer main chain, an ion conductive side chain and an immiscible side chain, and the composition of the solid electrolyte layer further includes a monomer or oligomer having a crosslinking group on a side chain, and the monomer or oligomer having a crosslinking group on a side chain is chemically bonded to the brush polymer in a block copolymerization form.

The non-miscible side chain refers to a side chain which has large difference with other side chains or macromolecules in properties and cannot be effectively blended, while the brush polymer provided by the invention refers to a macromolecule with a flexible main chain and two side chains, wherein one side chain is used for ion conduction, and the other side chain is other type side chains which have large difference with the ion conduction side chain in properties and cannot be effectively blended. The introduction of the immiscible side chain can reduce the crystallinity of the polymer, so that the polymer is in a random state, and the integral ion conducting capacity and transparency of the polymer are improved.

In one embodiment of the invention, the ion transfer layer is a solid state flexible electrolyte layer. The polymer of the solid flexible electrolyte layer may be selected from the following four broad classes of polymers.

Wherein x, y, and z are each independently selected from integers greater than 0. The rectangles shown in the formula represent polymer blocks having an ion-conducting function (ion-conducting polymer blocks), and the ovals represent monomers or polymers having side chains of PR (plasticizing group), or CL (crosslinking group), or NM (immiscible group), or IC (ion-conducting group).

PEGPRCL or PEGPR

A block copolymer (denoted by PEGPRCL) formed by copolymerizing a polymer block y with an ion-conducting function (such as polyethylene glycol or other materials reported in the literature) with a monomer or polymer block x having a plasticizing group (PR) on a side chain and a monomer or polymer block z having a crosslinking group (CL) on a side chain. Or a block copolymer (represented by PEGPR) formed by copolymerizing a polymer block y with an ion-conducting function (such as polyethylene glycol or other materials reported in the literature) and a monomer or polymer block x with a plasticizing group (PR) on a side chain.

PEGSPCL or PEGSP

A block copolymer (represented by PEGSPCL) formed by copolymerizing a polymer block y with an ion-conducting function (such as polyethylene glycol or other materials reported in the literature) and a linear plasticized polymer (SP) block x with a glass transition temperature of less than-20 ℃ (such as polyethylene, polybutylene, polyisobutylene, siloxane or other materials reported in the literature) and a monomer or polymer block z with a crosslinking group (CL) on a side chain. Or a block copolymer (denoted as PEGSP) formed by linking a polymer block y with an ion-conducting function (such as polyethylene glycol or other materials reported in the literature) with a linear plasticized polymer (SP) block x having a glass transition temperature of less than-20 ℃ (such as polyethylene, polybutylene, polyisobutylene, siloxane, or other materials reported in the literature).

PEGSP-PRCL or PEGSP-PR

The block copolymer (denoted by PEGSP-PRCL) is formed by linking a polymer block y having ion conductivity (such as polyethylene glycol or other materials reported in the literature) with a plasticized polymer (SP-PR) block x having plasticized side chains by chemical reaction, and copolymerizing the block with a monomer or oligomer (CL) block z having a crosslinking group on the side chains. Or a block copolymer (PEGSP-P R) formed by linking a polymer block y having ion conductivity (such as polyethylene glycol or other materials reported in the literature) with a plasticized polymer (SP-PR) block x having a plasticized side chain by chemical reaction.

ICNMCL or ICNM

The flexible polymer block x with side chain of oligomer or polymer (such as polyethylene glycol or other materials reported in literature) with ion conducting function and the flexible polymer block y with side chain (such as alkyl, aromatic or alkyl, aromatic mixed side chain) not blended with ion conducting polymer are connected by chemical reaction, and then copolymerized with monomer or oligomer (CL) block z with crosslinking group on the side chain to form comb-shaped block copolymer (ICNMCL). Or a comb-shaped block copolymer (ICNM) formed by connecting a flexible polymer block x with an oligomer or polymer (such as polyethylene glycol or other materials reported in the literature) with an ion-conducting function as a side chain and a flexible polymer block y with a side chain which is not blended with an ion-conducting polymer, such as a side chain of alkyl, aromatic or alkyl and aromatic mixture.

The above-mentioned polymeric materials for the ion transfer layer also need to be blended with a certain amount of organic and/or inorganic salts to form an electrolyte precursor. The inorganic salts include, but are not limited to, lithium, sodium, potassium, magnesium, calcium, aluminum salts; the organic salts include, but are not limited to ionic liquids such as EMITFSI, emitf. In some cases, it is also necessary to introduce an initiator to blend to form an electrolyte precursor, and the electrolyte precursor is crosslinked by heating, photo-initiation, etc. to form the final all-solid electrolyte.

In the present invention, the plasticizing group (PR) includes, but is not limited to, the following structure:

crosslinking groups (CL) include, but are not limited to, the following structures:

the backbone of the comb-like block copolymer includes, but is not limited to, the following structures:

ion-conducting groups (ICs) include, but are not limited to, the following structures:

in one embodiment of the present invention, the thickness of the ion transfer layer is 0.1 to 200 μm; for example, it may be 0.1. mu.m, 0.2. mu.m, 0.5. mu.m, 0.8. mu.m, 1. mu.m, 2. mu.m, 5. mu.m, 8. mu.m, 10. mu.m, 20. mu.m, 30. mu.m, 40. mu.m, 50. mu.m, 60. mu.m, 70. mu.m, 80. mu.m, 90. mu.m, 100. mu.m, 110. mu.m, 120. mu.m, 130. mu.m, 150. mu.m, 160. mu.m, 180. mu.m, or 200. mu.m. The ion transfer layer is a transfer channel for ions.

In one embodiment of the present invention, the material of the electrochromic layer is selected from one or a combination of at least two of electrochromic metal oxides such as tungsten oxide, polydecylviologen and its derivatives, polyaniline and its derivatives, polypyrrole and its derivatives, polythiophene and its derivatives, poly (3, 4-ethylenedioxythiophene) and its derivatives, polythieno [3,4-b ] [1,4] dioxepane and its derivatives, polyfuran and its derivatives, polyfluorene and its derivatives, polycarbazole and its derivatives, and/or a copolymer of a monomer or oligomer of the above-mentioned polymer and an electron-deficient monomer.

In one embodiment of the present invention, the electron deficient monomer includes, but is not limited to, one or a combination of at least two selected from the group consisting of benzothiadiazole, benzoselenadiazole, benzoxazole, benzotriazole, benzimidazole, quinoxaline, and pyrrolopyrrole dione.

The color change of the electrochromic layer may be adjusted according to the kind of the electrochromic material, and may be, for example, a change between black and transparent, a change between black and red, a change between black and yellow, or the like.

In one embodiment of the invention, the electrochromic layer has a thickness of 1 to 10000 nm; for example, it may be 1nm, 3nm, 5nm, 10nm, 20nm, 50nm, 80nm, 100nm, 200nm, 300nm, 400nm, 500nm, 600nm, 800nm, 1000nm, 2000nm, 5000nm, 8000nm, 10000nm, or the like.

In one embodiment of the present invention, the material of the first transparent substrate and the second transparent substrate is each independently glass or a flexible substrate material.

The flexible substrate material includes, but is not limited to, PET, cyclic olefin copolymer, cellulose triacetate, and the like.

In one embodiment of the present invention, the total thickness of the electrochromic aperture is 1mm or less.

The total thickness of the electrochromic aperture provided by the invention can be controlled below 5mm, and the lower thickness (or Z-axis height) is beneficial to zooming and regulation of a camera.

In a tenth aspect, the present invention provides an aperture lens assembly comprising a concave lens and a convex lens assembly for achromatization, and an electrochromic aperture according to the seventh aspect affixed to the surface of the concave or convex lens;

or the aperture lens combination comprises a concave lens and a convex lens combination for achromatism, and the concave lens is the electrochromic aperture of the eighth aspect.

In an eleventh aspect, the present invention provides a lens module, which includes an achromatic lens assembly, an electrochromic aperture, an exposure controller, an image sensor, a pulse voltage controller, a light intensity sensor, a photosensitive element, a circuit board, and a chip, according to the second, third, fourth, fifth, seventh, eighth, or ninth aspects of the present invention;

the centers of the achromatic lens combination, the electrochromic aperture, the exposure controller and the image sensor are on the same optical axis;

or comprises the aperture lens combination, the exposure controller, the image sensor, the pulse voltage controller, the light intensity sensor, the photosensitive element, the circuit board and the chip of the tenth aspect;

the centers of the aperture lens combination, the electrochromic aperture, the exposure controller and the image sensor are on the same optical axis.

Wherein the achromatic lens combination comprises a front lens and a rear lens, each of which independently comprises one or more lenses. The lens material is one or more resins which can be processed by ultraviolet curing, thermal curing or normal temperature curing, such as polycarbonate, polyester or polyurethane. The combination of the front lens and the rear lens is mainly used to eliminate chromatic aberration.

The electrochromic diaphragm is mainly used for adjusting the size of a diaphragm through which light can pass so as to adjust the light inlet quantity of the lens module.

The pulse voltage controller is mainly used for applying pulse voltage to the electrochromic aperture so as to change the light transmittance of the electrochromic aperture. The pulse voltage controller is influenced by a light intensity sensor, an exposure controller, a lens movement button, and the like.

The image sensor controls the diaphragm of the electrochromic aperture through the environment parameter control pulse voltage controller, and controls the exposure controller to control the exposure parameter and the exposure time. The environmental parameters include pixel integration time, ambient illumination, flash, and whether flash is available. The image sensor may be any conventional solid-state imaging sensor capable of capturing focused optical images, such as a Complementary Metal Oxide Semiconductor (CMOS) sensor chip.

The light sensing element can convert light into electric charge, and the electric charge is converted into digital signal by an analog-to-digital converter chip, and the digital signal is stored by a flash memory or a built-in hard disk card (including Charge Coupled Device (CCD) and Complementary Metal Oxide Semiconductor (CMOS)) in the camera after being compressed.

In the present invention, the whole manufacturing process of the lens module for adjusting the amount of light entering and the photographing effect can be summarized as the following steps:

(1) preparing an electrochromic aperture;

(2) molding and curing the achromatic lens combination, and forming an electrochromic aperture lens together with an electrochromic aperture;

(3) debugging and installing an image sensor, a pulse voltage controller and a photosensitive element:

through precise debugging, the combination of the electrochromic aperture and the achromatic lens and the image sensor are controlled to be positioned on the same optical axis, the image sensor detects the illuminance of the environment, the illuminance is converted into an electric signal and is output to a control chip, a pulse voltage controller is further regulated and controlled to output corresponding current to change the light transmittance of the electrochromic aperture, meanwhile, a voice coil motor changes a corresponding focal length to reach an optimal shooting parameter, then an exposure controller controls exposure, and an image signal is converted into an electric signal by a CCD and then is processed and output as an image;

(4) combine electrochromic light ring lens with other parts, form the camera lens module:

the electrochromic diaphragm lens and other components, such as an exposure controller, a CCD, a voice coil motor and the like, are precisely debugged and then are installed together to form the lens module.

Compared with the prior art, the invention has the following beneficial effects:

the preparation method of the electrochromic aperture provided by the first aspect of the invention effectively avoids the problems of nonuniform color change and the like caused by the traditional etching method while ensuring that the aperture can realize multi-stage regulation and control.

The electrochromic aperture provided by the third aspect and the fourth aspect of the invention can realize multi-stage adjustment and control of the aperture, and simultaneously avoid the problems of light leakage or light impermeability caused by etching the groove.

The electrochromic aperture provided by the fifth aspect of the invention and the method for multi-stage regulation and control of the electrochromic aperture provided by the sixth aspect of the invention can realize multi-stage regulation and control of the aperture and avoid the problem of light leakage or light impermeability caused by groove etching.

The electrochromic diaphragm provided by the seventh aspect of the invention is of a curved surface structure, has the same curvature as that of the surface of the concave lens or the convex lens in the achromatic lens combination, and can be attached to the surface of the concave lens or the convex lens of the achromatic lens combination, so that the combination of the diaphragm and the lens in the lens module is realized, and the lens module is further thinned.

The electrochromic diaphragm provided by the eighth aspect of the invention is of a curved surface structure, has the same shape as the concave lens or the convex lens in the achromatic lens combination, and can replace the concave lens or the convex lens in the achromatic lens combination, so that the combination of the diaphragm and the lens in the lens module is realized, and the lens module is further thinned.

The electrochromic aperture provided by the ninth aspect of the invention has different color change ranges from inside to outside, can realize the adjustment of the aperture level with larger difference, and meets the requirements of various shooting scenes.

Drawings

Fig. 1 is a schematic cross-sectional view of an electrochromic aperture provided in embodiment 1-1 of the present invention;

wherein 11 is a first transparent substrate, 12 is a first transparent conductive layer, 13 is an ion storage layer, 14 is an ion transfer layer, 15 is an electrochromic layer, 16 is a second transparent conductive layer, and 17 is a second transparent substrate.

FIG. 2 is a schematic cross-sectional view of an electrochromic aperture provided in embodiments 1-2 of the present invention;

wherein 21 is a first transparent substrate, 22 is a first transparent conductive layer, 23 is an ion storage layer, 24 is an ion transfer layer, 25 is an electrochromic layer, 26 is a second transparent conductive layer, and 27 is a second transparent substrate.

FIG. 3 is a schematic cross-sectional view of an electrochromic aperture provided in embodiments 1 to 3 of the present invention;

wherein 31 is a first transparent substrate, 32 is a first transparent conductive layer, 33 is an ion storage layer, 34 is an ion transfer layer, 35 is an electrochromic layer, 36 is a second transparent conductive layer, and 37 is a second transparent substrate.

FIG. 4 is a schematic cross-sectional view of an electrochromic aperture provided in embodiments 1-4 of the present invention;

in this case, 41 is a first transparent substrate, 42 is a first transparent conductive layer, 43 is an ion storage layer, 44 is an ion transfer layer, 45 is an electrochromic layer, 46 is a second transparent conductive layer, and 47 is a second transparent substrate.

FIG. 5 is a schematic cross-sectional view of an electrochromic aperture provided in embodiments 1 to 5 of the present invention;

wherein 51 is a first transparent substrate, 52 is a first transparent conductive layer, 53 is an ion storage layer, 54 is an ion transfer layer, 55 is an electrochromic layer, 56 is a second transparent conductive layer, and 57 is a second transparent substrate.

Fig. 6 is a schematic cross-sectional view of an electrochromic aperture according to embodiment 2 of the present invention;

wherein 61, 62, 63 are transparent substrates; 61-1, 61-5, 62-1 and 62-5 are transparent conductive layers; 61-2 and 62-2 are ion storage layers; 61-3 and 62-3 are ion transfer layers; 61-4, 62-4 are electrochromic layers.

FIG. 7 is a schematic cross-sectional view of an electrochromic aperture provided in embodiment 3-1 of the present invention;

here, 71 is a first transparent substrate, 72 is a first transparent conductive layer, 73 is an ion storage layer, 74 is an ion transfer layer, 75 is an electrochromic layer, 76 is a second transparent conductive layer, and 77 is a second transparent substrate.

FIG. 8 is a schematic cross-sectional view of an electrochromic aperture provided in embodiment 3-2 of the present invention;

here, 81 is a first transparent substrate, 82 is a first transparent conductive layer, 83 is an ion storage layer, 84 is an ion transfer layer, 85 is an electrochromic layer, 86 is a second transparent conductive layer, and 87 is a second transparent substrate.

Fig. 9 is a schematic diagram of a method for multi-stage adjustment and control of an electrochromic aperture in embodiment 4 of the present invention.

FIG. 10 is a schematic cross-sectional view of an electrochromic aperture provided in example 5-1 of the present invention;

wherein 101 is a first transparent substrate, 102 is a first transparent conductive layer, 103 is an ion storage layer, 104 is an ion transfer layer, 105 is an electrochromic layer, 106 is a second transparent conductive layer, and 107 is a second transparent substrate.

FIG. 11 is a schematic cross-sectional view of an electrochromic aperture provided in example 5-2 of the present invention;

wherein 111 is a first transparent substrate, 112 is a first transparent conductive layer, 113 is an ion storage layer, 114 is an ion transfer layer, 115 is an electrochromic layer, 116 is a second transparent conductive layer, and 117 is a second transparent substrate.

FIG. 12 is a schematic cross-sectional view of a curved electrochromic aperture provided in example 6-1 of the present invention;

wherein 121 is a first transparent substrate, 122 is a first transparent conductive layer, 123 is an ion storage layer, 124 is an ion transfer layer, 125 is an electrochromic layer, 126 is a second transparent conductive layer, and 127 is a second transparent substrate.

FIG. 13 is a schematic structural diagram of an aperture lens assembly provided in embodiment 6-1 of the present invention;

wherein 131 is a convex lens, 132 is the curved electrochromic aperture provided in example 6-1, and 133 is a concave lens.

FIG. 14 is a schematic structural diagram of an aperture lens assembly provided in embodiment 6-2 of the present invention;

wherein 141 is a convex lens, 142 is the curved electrochromic aperture provided in example 6-2, and 143 is a concave lens.

FIG. 15 is a schematic structural diagram of an aperture lens assembly provided in embodiment 6-3 of the present invention;

wherein 151 is a convex lens, 152 is the curved electrochromic aperture provided in example 6-3, and 153 is a holder.

FIG. 16 is a schematic structural diagram of an aperture lens assembly provided in embodiments 6-4 of the present invention;

where 161 is the support, 162 the curved electrochromic aperture provided in examples 6-4, and 163 is the concave lens.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings. It should be understood by those skilled in the art that the specific embodiments are only for the understanding of the present invention and should not be construed as the specific limitations of the present invention.

In the embodiment of the invention, the preparation method of the polymer A (a solid electrolyte polymer belonging to PEGPRCL) comprises the following steps:

bromoisobutyric acid-terminated PEG (polyethylene glycol), acrylates with plasticizing groups, crosslinking groups with two acrylic acids, monovalent copper catalysts, PMDETA (N, N', N "-pentamethyldiethylenetriamine) ligands were added to a suitable organic solvent. The mixed solution (the mixture without the addition of a solvent can also be used as an electrolyte precursor directly for device fabrication) was reacted at 100 ℃ for 12 hours, and the solvent was removed by filtration through celite and reduced pressure to obtain Polymer A.

The preparation method of the polymer B (a solid electrolyte polymer belonging to the PEGPR class) is as follows:

PEG diamine (polyethylene glycol diamine) and phthaloyl chloride are added into a proper organic solvent, and the mixture is directly polymerized under alkaline conditions to obtain the polyelectrolyte (the mixture without the solvent can also be used as an electrolyte precursor and directly used for preparing a device). The polymer B was obtained by separating the liquid with water, drying and removing the solvent.

The preparation method of the macromolecule C (a solid electrolyte polymer belonging to PEGSPCL) comprises the following steps:

PEG (polyethylene glycol), polysiloxane diamine, crosslinker tetramine, condensation agent CDI (carbonyldiimidazole) were added to a suitable organic solvent (this mixture without solvent can also be used as an electrolyte precursor directly for device fabrication). The reaction is carried out at 90 ℃ to obtain the polymer. And (3) washing, separating, drying and removing the solvent to obtain the polymer C.

The preparation method of the polymer D (a type of solid electrolyte polymer belonging to PEGSP) is as follows:

PEG (polyethylene glycol), polysiloxane diamine, condensation agent CDI (carbonyldiimidazole) were added to a suitable organic solvent (this mixture without solvent can also be used as an electrolyte precursor directly for device fabrication). And (3) carrying out reaction at 120 ℃ to obtain a polymer, washing with water, separating liquid, drying, and removing the solvent to obtain a polymer D.

The preparation method of the macromolecule E (a solid electrolyte polymer belonging to PEGSP-PRCL) comprises the following steps:

PEG (polyethylene glycol), polysiloxane diol, cross-linking agent tetrol, condensing agent CDI (carbonyl diimidazole) (the mixture without solvent can also be used as electrolyte precursor for preparing device directly) are added into a proper organic solvent to react at 100 ℃ to obtain the polymer. The polymer E was obtained by separating the liquid with water, drying and removing the solvent.

The preparation method of the macromolecule F (a solid electrolyte polymer belonging to PEGSP-PR) comprises the following steps:

PEG (polyethylene glycol), polysiloxane diol, condensation agent CDI (carbonyldiimidazole) were added to a suitable organic solvent (this mixture without solvent can also be used as an electrolyte precursor directly for device fabrication). The reaction is carried out at 100 ℃ to obtain the polymer. The polymer F was obtained by water washing, liquid separation, drying, and solvent removal.

The preparation method of the polymer G (a solid electrolyte polymer belonging to ICNMCL) is as follows:

alkyl acrylates, polyethylene glycol acrylates, ethylene glycol diacrylate, AIBN (azodiisobutyronitrile) are added to suitable organic solvents (this mixture without solvent can also be used as electrolyte precursor directly for device preparation). And (4) performing light reaction to obtain a polymer. The polymer G was obtained by separating the liquid with water, drying and removing the solvent.

The preparation method of the polymer H (a type of solid electrolyte polymer belonging to ICNM) is as follows:

alkyl acrylates, polyethylene glycol acrylates, AIBN (azobisisobutyronitrile) are added to a suitable organic solvent (this mixture without solvent can also be used as an electrolyte precursor directly for device fabrication). And (4) performing light reaction to obtain a polymer. And washing with water, separating, drying and removing the solvent to obtain the polymer H.

Examples 1 to 1

The embodiment provides an electrochromic diaphragm for realizing multi-stage control through partition and a preparation method thereof.

The structure of the electrochromic aperture is shown in fig. 1, and comprises a first transparent substrate 11, a first transparent conductive layer 12, an ion storage layer 13, an ion transfer layer 14, an electrochromic layer 15, a second transparent conductive layer 16 and a second transparent substrate 17 which are sequentially stacked;

wherein, a plurality of annular grooves which take the central axis of the electrochromic aperture as the center are etched on the electrochromic layer 15 and the second transparent conducting layer 16.

The preparation method of the electrochromic aperture in this example is as follows:

(1) preparation of the electrochromic layer 15:

500mg of poly (3-hexylthiophene) (P3HT) was dissolved in 10mL of o-xylene, and magnetically stirred for 10 hours, and then the resulting solution was dropped onto an ITO layer (second transparent conductive layer 16) plated on a glass substrate (second transparent base 17) to form a P3HT coating layer, and a plurality of annular grooves were laser-etched on the P3HT coating layer and the second transparent conductive layer in accordance with the structure shown in FIG. 1, to obtain an electrochromic layer 15.

(2) Preparation of the ion storage layer 13:

after 500mg of tungsten trioxide was dissolved in 20mL of deionized water and stirred and filtered, the resulting solution was dropped onto an ITO layer (first transparent conductive layer 12) plated on a glass substrate (first transparent base 11) and spin-coated to form a tungsten trioxide coating layer, resulting in an ion storage layer 13.

(3) Preparation of an electrochromic aperture:

mixing 10 wt% of lithium perchlorate, 89.9 wt% of a precursor of polymer H and 0.1 wt% of azobisisobutyronitrile, and coating the mixture on the ion storage layer 13 to form an electrolyte coating; then, the electrochromic layer 15 (together with the ITO layer and the glass substrate) is covered on the electrolyte coating, and the electrolyte coating is uv-cured to form an all-solid-state polymer electrolyte layer (ion transfer layer 14), so as to obtain the electrochromic diaphragm.

Examples 1 to 2

The embodiment provides an electrochromic diaphragm for realizing multi-stage control through partition and a preparation method thereof.

The structure of the electrochromic aperture is as shown in fig. 2, and includes a first transparent substrate 21, a first transparent conductive layer 22, an ion storage layer 23, an ion transfer layer 24, an electrochromic layer 25, a second transparent conductive layer 26 and a second transparent substrate 27, which are sequentially stacked;

wherein, a plurality of annular grooves which take the central axis of the electrochromic aperture as the center are simultaneously etched on the ion storage layer 23 and the first transparent conducting layer 22.

The method for manufacturing the electrochromic aperture in this embodiment is different from that of embodiment 1-1 in that the ion storage layer 23 and the first transparent conductive layer 22 are laser-etched after the ion storage layer 23 is coated.

Examples 1 to 3

The embodiment provides an electrochromic diaphragm for realizing multi-stage control through partition and a preparation method thereof.

The electrochromic aperture has a structure as shown in fig. 3, and includes a first transparent substrate 31, a first transparent conductive layer 32, an ion storage layer 33, an ion transfer layer 34, an electrochromic layer 35, a second transparent conductive layer 36 and a second transparent substrate 37, which are sequentially stacked;

wherein, a plurality of annular grooves centered on the central axis of the electrochromic diaphragm are etched on the second transparent substrate 37, the second transparent conductive layer 36 and the electrochromic layer 35.

The method for manufacturing the electrochromic aperture in this embodiment is different from that in embodiment 1-1 in that the laser etching operation is performed after the ion transfer layer is cured by ultraviolet in step (3), etching is performed from the second transparent substrate 37 side, and an annular groove is simultaneously etched in three layers of the second transparent substrate 37, the second transparent conductive layer 36, and the electrochromic layer 35.

Examples 1 to 4

The embodiment provides an electrochromic diaphragm for realizing multi-stage control through partition and a preparation method thereof.

The electrochromic aperture has a structure as shown in fig. 4, and includes a first transparent substrate 41, a first transparent conductive layer 42, an ion storage layer 43, an ion transfer layer 44, an electrochromic layer 45, a second transparent conductive layer 46, and a second transparent substrate 47, which are sequentially stacked;

wherein, a plurality of annular grooves with the central axis of the electrochromic aperture as the center are etched on the first transparent substrate 41, the first transparent conductive layer 42 and the ion storage layer 43.

The method for manufacturing the electrochromic aperture in this embodiment is different from that in embodiment 1-1 in that the laser etching operation is performed after the ion transfer layer is cured by ultraviolet in step (3), etching is performed from the first transparent substrate 41 side, and an annular groove is simultaneously etched in three layers of the first transparent substrate 41, the first transparent conductive layer 42, and the ion storage layer 43.

Examples 1 to 5

The embodiment provides an electrochromic diaphragm for realizing multi-stage control through partition and a preparation method thereof.

The electrochromic aperture has a structure as shown in fig. 5, and includes a first transparent substrate 51, a first transparent conductive layer 52, an ion storage layer 53, an ion transfer layer 54, an electrochromic layer 55, a second transparent conductive layer 56, and a second transparent substrate 57, which are sequentially stacked;

wherein, a plurality of annular grooves with the central axis of the electrochromic aperture as the center are etched on the second transparent substrate 57 and the second transparent conductive layer 56.

The method for manufacturing the electrochromic aperture in this embodiment is different from that in embodiment 1-1 in that the laser etching operation is performed after the ion transfer layer is cured by ultraviolet in step (3), etching is performed from the second transparent substrate 57 side, and an annular groove is simultaneously etched in both the second transparent substrate 57 and the second transparent conductive layer 56.

In the preparation methods of embodiments 1-1 to 1-5, since the etching operation is performed after the ion storage layer and the electrochromic layer are coated, the problems of nonuniform color change and the like caused by the conventional etching method are effectively avoided while the multistage adjustment of the aperture is ensured.

Example 2

The embodiment provides an electrochromic aperture capable of realizing multi-level control by overlapping a plurality of layers of electrochromic units, as shown in fig. 6, the aperture is formed by overlapping two independent electrochromic units, and comprises a transparent substrate 61, a transparent conducting layer 61-1, an ion storage layer 61-2, an ion transfer layer 61-3, an electrochromic layer 61-4, a transparent conducting layer 61-5, a transparent substrate 62, a transparent conducting layer 62-1, an ion storage layer 62-2, an ion transfer layer 62-3, an electrochromic layer 62-4, a transparent conducting layer 62-5 and a transparent substrate 63 which are sequentially stacked;

wherein the ion storage layers 61-2, 62-2 and the electrochromic layers 61-4, 62-4 are in the shape of circular rings centered on the central axis of the electrochromic aperture; the ion storage layer 61-2 and the electrochromic layer 61-4 are identical in shape and aligned with each other; the ion storage layer 62-2 and the electrochromic layer 62-4 are identical in shape and aligned with each other; and the outer diameter of the electrochromic layer 61-4 is the same as the inner diameter of the electrochromic layer 62-4.

In this embodiment, since the projections of the electrochromic layer 61-4 and the electrochromic layer 62-4 along the central axis direction of the electrochromic aperture are seamlessly joined, the problem of light leakage or light impermeability caused by etching the groove is avoided while realizing multi-stage adjustment of the aperture.

The preparation methods of the annular electrochromic layer and the annular ion storage layer in this embodiment are two methods: firstly, a hollowed annular shielding base material is covered above a transparent conducting layer, an electrochromic layer or an ion storage layer is coated above the transparent conducting layer, and the annular electrochromic layer or the ion storage layer can be obtained after the shielding base material is removed; and secondly, laser etching, chemical corrosion or physical wiping out the annular electrochromic layer and the ion storage layer on the transparent conducting layer coated with the electrochromic layer or the ion storage layer.

The method for superposing the layers comprises the following steps: coating corresponding transparent conductive layers on 3 transparent substrates, preparing an annular electrochromic layer and an annular ion storage layer which are covered on the transparent conductive layers, coating an ion transfer layer material, and performing ultraviolet curing after compounding. The materials of the layers are the same as in example 1.

Example 3-1

The present embodiment provides an electrochromic aperture that realizes multi-level control by controlling a voltage at which color change starts, as shown in fig. 7, including a first transparent substrate 71, a first transparent conductive layer 72, an ion storage layer 73, ion transfer layers 74 with different degrees of cross-linking, an electrochromic layer 75, a second transparent conductive layer 76, and a second transparent substrate 77 that are sequentially stacked;

the ion transfer layer 74 is divided into 3 circular or ring-shaped regions from the inside to the outside, the circular or ring-shaped regions being centered around the center axis of the electrochromic aperture, and the degree of cross-linking of the ion transfer layer 74 gradually increases from the inside to the outside.

The specific implementation method comprises the following steps: before the ultraviolet curing of the ion transfer layer, different areas are shielded by substances with different ultraviolet transmittances, so that the ion transfer layer materials in the different areas are different in crosslinking degree, and the difference of starting brightening or starting darkening voltages of different layers is realized, and the method comprises the following specific steps:

(1) preparation of electrochromic layer 75:

500mg of poly (3-hexylthiophene) (P3HT) was dissolved in 10mL of o-xylene, and magnetically stirred for 10 hours, after which the resulting solution was dropped onto the ITO layer (second transparent conductive layer 76) plated on the glass substrate (second transparent base 77) and spin-coated to form a P3HT coating layer, resulting in an electrochromic layer.

(2) Preparation of the ion storage layer 73:

after 500mg of tungsten trioxide was dissolved in 20mL of deionized water and stirred and filtered, the resulting solution was dropped onto an ITO layer (first transparent conductive layer 72) plated on a glass substrate (first transparent base 71) and spin-coated to form a tungsten trioxide coating layer, resulting in an ion storage layer 73.

(3) Preparation of an electrochromic aperture:

mixing 10 wt% of lithium bis (trifluoromethanesulfonyl) imide, 89.9 wt% of a precursor of a polymer G and 0.1 wt% of azodiisobutyronitrile, and coating the mixture on the ion storage layer to form an electrolyte coating; then covering the electrochromic layer 75 (together with the ITO layer and the glass substrate) on the electrolyte coating, covering and shielding the outermost ring of the ion transfer layer 74 by a surface-coated PET film with 10% ultraviolet transmittance consistent with the shape of the outermost ring of the ion transfer layer 74 on the outer side of the transparent substrate; covering and shielding the intermediate ring of the ion transfer layer 74 by a surface-coated PET film with 50% ultraviolet transmittance consistent with the shape of the intermediate ring; the innermost ring of the ion transfer layer 74 was covered with a 90% uv transparent PET film conforming to the shape of the innermost ring, and cured by heating to obtain an electrochromic aperture.

Since the crosslinking degree of the ion transfer layer material is gradually increased from inside to outside, and the voltage for starting to brighten is gradually increased from inside to outside, when a forward voltage is applied, the inner ring of the aperture becomes brighter before the outer ring. Because the areas of the diaphragm from inside to outside are continuous, the problem of light leakage or light impermeability caused by etching the groove is avoided while the multi-stage regulation and control of the diaphragm is realized.

Examples 3 to 2

The present embodiment provides an electrochromic aperture that realizes multi-level control by controlling a voltage at which color change starts, as shown in fig. 8, including a first transparent substrate 81, a first transparent conductive layer 82, an ion storage layer 83, an ion transfer layer 84, an electrochromic layer 85, a second transparent conductive layer 86, and a second transparent substrate 87, which are sequentially stacked;

the electrochromic layer 85 is divided into 3 circular or ring-shaped areas from inside to outside, the circular or ring-shaped areas are centered around the central axis of the electrochromic aperture, the electrochromic material in each area is different, the voltage at which the electrochromic material from inside to outside starts to brighten gradually increases, and the voltage at which the electrochromic material starts to darken gradually decreases.

The specific implementation method comprises the following steps: electrochromic materials of different starting lightening or starting darkening voltages, applied on transparent conductive layers, e.g. WO₃Polydecyl viologen and its derivatives, polyaniline and its derivatives, poly (3-hexylthiophene) and its derivatives, poly (3, 4-ethylenedioxythiophene) and its derivatives, polythieno [3,4-b ]][1,4]Dioxepane and derivatives thereof to achieve a difference in the onset of brightening or darkening of the different layers. The method comprises the following specific steps:

(1) preparation of the electrochromic layer 85:

500mg of poly (3, 4-ethylenedioxythiophene) with an alkyl side chain ethylhexyl group is dissolved in 10ml of chloroform and stirred magnetically for 10 hours; 500mg of polythieno [3,4-b ] [1,4] dioxepane with alkyl side chain ethylhexyl group was dissolved in chlorobenzene and stirred magnetically for 10 h; 500mg of poly (3-hexylthiophene) (P3HT) was dissolved in 10mL of o-xylene and magnetically stirred for 10 h. Printing a poly (3, 4-ethylenedioxythiophene) solution on the ITO layer (second transparent conductive layer 86) on the glass substrate (second transparent substrate 87) by inkjet printing to form a poly (3, 4-ethylenedioxythiophene) coating layer of the innermost circumference; printing a polythiophene [3,4-b ] [1,4] dioxepane solution on the ITO layer (second transparent conductive layer 86) on the glass substrate (second transparent base 87) by ink jet printing to form a second turn of a polythiophene [3,4-b ] [1,4] dioxepane coating layer; the electrochromic layer 85 is completed by printing a poly (3-hexylthiophene) solution on the ITO layer (second transparent conductive layer 86) on the glass substrate (second transparent substrate 87) by inkjet printing to form the outermost ring of poly (3-hexylthiophene) coating layer.

(2) Preparation of the ion storage layer 83:

after 500mg of tungsten trioxide was dissolved in 20mL of deionized water and stirred and filtered, the resulting solution was dropped onto an ITO layer (first transparent conductive layer 82) plated on a glass substrate (first transparent base 81), and spin-coated to form a tungsten trioxide coating layer, resulting in an ion storage layer 83.

(3) Preparation of an electrochromic aperture:

mixing 10 wt% of lithium perchlorate, 79.9 wt% of a precursor of polymer G and 0.1 wt% of azobisisobutyronitrile, and coating the mixture on the ion storage layer to form an electrolyte coating; the electrochromic layer 85 (together with the ITO layer and the glass substrate) is then covered on the electrolyte coating and cured by heating at 80 c to obtain an electrochromic aperture.

The three layers of the electrochromic layer 85 are made of materials in which the voltage for starting to brighten gradually increases from the inside to the outside, but the voltage for starting to darken gradually increases. When a forward voltage is applied, the inner ring of the aperture becomes brighter before the outer ring. Because the areas of the diaphragm from inside to outside are continuous, the problem of light leakage or light impermeability caused by groove etching is avoided while the multi-stage regulation and control of diaphragm brightness is realized. When the light-shading structure darkens, the three-layer material can return to a dark state at the same time only by short-circuiting the two transparent conducting layers or applying negative voltage with the absolute value smaller than 2V, and although the light-shading structure does not have multi-stage dimming regulation, the requirement of the aperture can be met.

Example 4

The embodiment provides a method for performing multi-stage regulation and control on an electrochromic aperture by the electrochromic aperture.

The electrochromic aperture comprises a first transparent substrate, a first transparent conducting layer, an ion storage layer, an ion transfer layer, an electrochromic layer, a second transparent conducting layer and a second transparent substrate which are sequentially overlapped;

the electrochromic light ring is made of the same material from inside to outside, and no groove is formed in the electrochromic light ring.

The multistage regulation and control method comprises the following steps: by using the electrochromic diaphragm provided by the embodiment, different voltages are applied to the center and the edge of the diaphragm, and the voltage at the center is greater than that at the edge, so that multi-stage regulation is realized.

Fig. 9 is a schematic diagram of a method for multi-stage adjustment and control of an electrochromic aperture in this embodiment (with an electrochromic layer on top and an ion storage layer on bottom), as shown in fig. 9, the voltage at the center is +2V, and the voltage at the edge is-2V, under the voltage, the voltage from the center to the edge is spontaneously and gradually distributed, and a distribution in which the voltage gradually decreases from inside to outside is formed. The voltage at the center and the edge is changed, so that the change control of different transmittances of the diaphragm can be realized. Because the diaphragm is continuous from inside to outside, the problem of light leakage or light impermeability caused by etching the groove is avoided while realizing multi-stage regulation of the diaphragm.

Example 5-1

The present embodiment provides an electrochromic aperture that realizes multi-level modulation by an electrochromic layer with a variable thickness, as shown in fig. 10, including a first transparent substrate 101, a first transparent conductive layer 102, an ion storage layer 103, an ion transfer layer 104, an electrochromic layer 105, a second transparent conductive layer 106, and a second transparent substrate 107, which are sequentially stacked;

wherein, a plurality of annular grooves taking the central axis of the electrochromic aperture as the center are etched on the second transparent conductive layer 106, and the thicknesses of the electrochromic layer 105 and the ion storage layer 103 are gradually increased from inside to outside (the thickness ratio of the edge to the center is 1.1: 1).

The thickness of the electrochromic layer of the electrochromic diaphragm provided by the embodiment is gradually increased from inside to outside, so that the diaphragm has different color change ranges from inside to outside, and compared with a diaphragm with the thickness of the electrochromic layer kept unchanged from inside to outside, the electrochromic diaphragm provided by the embodiment can realize the adjustment of the diaphragm stage number with larger difference, and the requirements of various shooting scenes are met.

The preparation method comprises the following steps:

the difference from the embodiment 1-1 is that after the electrochromic layer is coated, the electrochromic layer is subjected to laser etching to gradually increase the thickness from inside to outside, and then a plurality of annular grooves with the central axis of the electrochromic aperture as the center are etched on the second transparent conductive layer; after the ion storage layer is coated, the ion storage layer is subjected to laser etching, so that the thickness of the ion storage layer is gradually increased from inside to outside (since the thickness of the ion transfer layer is in a micron scale, and the thicknesses of the electrochromic layer and the ion storage layer are changed into a nanometer scale, the actually caused thickness change of the ion transfer layer is negligible).

Examples 5 and 2

The present embodiment provides an electrochromic aperture that realizes multi-level modulation through an electrochromic layer with a variable thickness, as shown in fig. 11, including a first transparent substrate 111, a first transparent conductive layer 112, an ion storage layer 113, an ion transfer layer 114, an electrochromic layer 115, a second transparent conductive layer 116, and a second transparent substrate 117, which are sequentially stacked;

wherein, a plurality of annular grooves with the central axis of the electrochromic aperture as the center are etched on the second transparent conductive layer 116, and the thickness of the electrochromic layer 115 gradually increases from inside to outside (the thickness ratio of the edge to the center is 1.1: 1).

The thickness of the electrochromic layer of the electrochromic diaphragm provided by the embodiment is gradually increased from inside to outside, so that the diaphragm has different color change ranges from inside to outside, and compared with a diaphragm with the thickness of the electrochromic layer kept unchanged from inside to outside, the electrochromic diaphragm provided by the embodiment can realize the adjustment of the diaphragm stage number with larger difference, and the requirements of various shooting scenes are met.

The preparation method comprises the following steps:

the difference from example 1-1 is that after the electrochromic layer is coated, the electrochromic layer is laser etched to gradually increase its thickness from inside to outside, and then a plurality of annular grooves centered on the central axis of the electrochromic aperture are etched on the second transparent conductive layer (since the thickness of the ion transfer layer is in the micrometer range and the thickness of the electrochromic layer changes in the nanometer range, the thickness change of the ion transfer layer caused in practice is negligible).

Example 6-1

The present embodiment provides a curved electrochromic aperture and an aperture lens combination.

The structure of the curved surface electrochromic aperture is shown in fig. 12, and includes a first transparent substrate 121, a first transparent conductive layer 122, an ion storage layer 123, an ion transfer layer 124, an electrochromic layer 125, a second transparent conductive layer 126, and a second transparent substrate 127, which are sequentially stacked;

the curvature of the electrochromic aperture is the same as that of the convex lens surface in the achromatic lens assembly, a plurality of annular grooves centered on the central axis of the electrochromic aperture are etched in the second transparent conductive layer 126, and the thickness of the electrochromic layer 125 is gradually increased from the inside to the outside.

The structure of the aperture lens assembly is shown in fig. 13, and includes an achromatic lens assembly and the curved electrochromic aperture 132 provided in this embodiment, the achromatic lens assembly includes a convex lens 131 and a concave lens 133, and the curved electrochromic aperture 132 is attached to the surface of the convex lens 131 through optical cement such as OCA and LOCA.

The preparation method of the curved surface electrochromic aperture in the embodiment is as follows:

(1) preparation of electrochromic layer 125:

dissolving 500mg of poly (3-dodecyl) thiophene (PDT) in 10mL of o-xylene, magnetically stirring for 10h, dripping the obtained solution onto an ITO layer (a second transparent conductive layer 126) plated on a second transparent substrate 127 of a PET substrate, spin-coating to form a PDT coating (an electrochromic layer 125), etching the electrochromic layer 125 by using laser, wherein the etching degree is gradually reduced from inside to outside, and a structure with the thickness gradually increased from inside to outside is formed; then 9 annular grooves centered on the central axis of the electrochromic aperture are laser etched on the electrochromic layer 125 and the second transparent conductive layer 126.

(2) Preparation of the ion storage layer 123:

500mg of tungsten trioxide is dissolved in 20mL of deionized water, and after stirring and filtration, the obtained solution is dropped on an ITO layer (first transparent conductive layer 122) plated on PET (first transparent substrate 121), and spin-coated to form a tungsten trioxide coating, that is, the ion storage layer 123.

(3) Preparation of an electrochromic aperture:

mixing 5 wt% of lithium perchlorate, 94.9 wt% of polymer G and 0.1 wt% of tert-butyl peroxyneodecanoate, and coating the mixture on the ion storage layer 13 to form an electrolyte coating; the electrochromic layer 125 (along with the ITO layer and the glass substrate) is then overlaid on the electrolyte coating, and uv curing causes the electrolyte coating to form an all-solid-state polyelectrolyte (ion transfer layer 124), resulting in an electrochromic aperture.

(4) Preparation of curved surface electrochromic aperture

And attaching a layer of OCA on the surface of the convex lens, and then attaching and fixing the electrochromic aperture on the OCA to obtain the curved-surface electrochromic aperture.

Because the electrochromic diaphragm that this embodiment provided has flexible bendable characteristics, consequently can design for the curved surface structure the same with the convex lens camber in the achromatic lens combination to realize the amalgamation of diaphragm and lens in the lens module, thin lens module.

Example 6 to 2

The present embodiment provides a curved electrochromic aperture and an aperture lens combination.

Among them, the curved electrochromic aperture is different from example 6-1 in that the curvature thereof is the same as that of the surface of the concave lens in the achromatic lens combination, and the manufacturing method is different from example 6-1 in that the electrochromic aperture is attached to the surface of the concave lens having OCA in step (4) to obtain the curved electrochromic aperture.

The structure of the aperture lens assembly is shown in fig. 14, and includes an achromatic lens assembly and the curved electrochromic aperture 142 provided in this embodiment, the achromatic lens assembly includes a convex lens 141 and a concave lens 143, and the curved electrochromic aperture 142 is attached to the surface of the concave lens 143 by OCA optical cement.

Because the electrochromic diaphragm that this embodiment provided has flexible bendable characteristics, consequently can design for the curved surface structure the same with the concave lens camber in the achromatic lens combination to realize the amalgamation of diaphragm and lens in the lens module, thin lens module.

Examples 6 to 3

The present embodiment provides a curved electrochromic aperture and an aperture lens combination.

Among them, the curved electrochromic aperture is different from example 6-1 in that its shape is the same as that of the concave lens in the achromatic lens combination.

The structure of the aperture lens assembly is as shown in fig. 15, and includes a convex lens 151 and a concave lens 152 assembly for achromatization, and a holder 153, the concave lens 152 is clamped on the holder 153; and the concave lens 152 is a curved electrochromic aperture provided in this embodiment.

Because the electrochromic diaphragm that this embodiment provided has flexible bendable characteristics, consequently can design for the shape the same with the concave lens in the achromatic lens combination, replace the concave lens in the achromatic lens combination to realize the amalgamation of diaphragm and lens in the lens module, thin lens module.

Examples 6 to 4

The present embodiment provides a curved electrochromic aperture and an aperture lens combination.

Among them, the curved electrochromic aperture is different from example 6-1 in that its shape is the same as that of the convex lens in the achromatic lens combination.

The structure of the aperture lens assembly is as shown in fig. 15, and includes a convex lens 162 and a concave lens 163 for achromatization, and a holder 161, the convex lens 162 is clamped on the holder 161; and the convex lens 162 is a curved electrochromic aperture provided in this embodiment.

Because the electrochromic diaphragm that this embodiment provided has flexible bendable characteristics, consequently can design for the shape the same with the convex lens in the achromatic lens combination, replace the convex lens in the achromatic lens combination to realize the amalgamation of diaphragm and lens in the lens module, thin lens module.

It should be noted that the voltage driver in the drawings of the present invention is used for providing the driving voltage, and is only for convenience of explaining the operation principle of the electrochromic aperture, and should not be understood as a component of the electrochromic aperture.

The applicant declares that the above description is only a specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and it should be understood by those skilled in the art that any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are within the scope and disclosure of the present invention.