1. A multi-optical axis parallel adjusting device is characterized by comprising a calibration platform, a multi-optical path mechanism, a first target and a second target, wherein the multi-optical path mechanism is slidably arranged on the calibration platform, and the first target is positioned between the calibration platform and the second target; the multi-light-path mechanism comprises a visible light camera, an infrared camera, a laser range finder, an adjusting mechanism and a multi-light-path support, the visible light camera, the infrared camera and the laser range finder are all arranged on the multi-light-path support through the adjusting mechanism, lasers are arranged on two sides of the calibration platform, laser positioning holes corresponding to the same positions of the number of the lasers are arranged on the first target and the second target, and positioning points corresponding to the same positions of the number of the light sources of the multi-light-path mechanism are arranged on the second target.

2. The multi-optical-axis parallel adjusting device according to claim 1, wherein a coarse parallelism adjusting mechanism, a fine parallelism adjusting mechanism, a slide rail, and two slide seats are disposed on the calibration platform, the coarse parallelism adjusting mechanism is disposed at a bottom supporting portion of the calibration platform, the slide rail is connected to the calibration platform through the fine parallelism adjusting mechanism, the slide seats are disposed on the slide rail, the multi-optical-path mechanism is disposed on the slide seat, the two lasers are disposed, and the lasers are respectively disposed on two sides of the multi-optical-path mechanism.

3. The multi-optical-axis parallelism adjusting apparatus according to claim 1, wherein the first target includes a first holder, a first panel, and a first side positioning mechanism, the first panel is disposed on the first holder by the first side positioning mechanism, and the first panel is provided with a laser positioning hole and an auxiliary positioning hole.

4. The multi-optical-axis parallel adjustment device of claim 3, wherein the second target includes a second support, a second panel and a second side positioning mechanism, the second panel is disposed on the second support through the second side positioning mechanism, the second panel is disposed with a laser positioning hole and a positioning point, the positioning point includes a visible light positioning mark point, an infrared mark point and a laser mark point, the laser positioning hole on the second panel and the laser positioning hole on the first panel are on the same straight line with the optical axis of the laser at the same side, and the position relationship among the visible light positioning mark point, the infrared mark point and the laser mark point is the same as the position relationship among the visible light camera, the infrared camera and the laser range finder.

5. The multi-optical-axis parallelism adjusting apparatus according to claim 4, wherein a heat generating plate is provided on a face of the second panel away from the first target.

6. The multi-optical axis parallelism adjustment apparatus according to claim 1, further comprising a night vision device for observing the position of the laser spot.

7. A multi-optical axis parallelism adjusting method based on the multi-optical axis parallelism adjusting apparatus according to claim 1, characterized by comprising the steps of:

s10, adjusting the calibration platform to enable the multi-light-path mechanism to be in a horizontal position;

s20, arranging a first target between the second targets, and adjusting the positions of the first target and the second target so that laser of a laser on a calibration platform sequentially passes through laser positioning holes of the first target and the second target;

s30, adjusting the position of the multi-optical-path mechanism, so that the optical axis of the multi-optical-path mechanism irradiates the positioning point on the second target, thereby completing the adjustment of the optical axis.

8. The multi-optical axis parallelism adjustment method according to claim 7, wherein the S10 includes:

s11, adjusting a coarse parallelism adjusting mechanism to approximately level the calibration platform;

s12, leveling the calibration platform transversely and longitudinally by means of a high-precision level meter by using a parallelism fine-adjustment mechanism.

9. The multi-optical axis parallelism adjustment method according to claim 8, wherein the step S20 includes:

s21, adjusting the first side positioning mechanism, so that the optical axis of the laser passes through the corresponding laser positioning hole of the first panel, and the optical axes of the visible light camera, the infrared camera and the laser range finder pass through the auxiliary positioning hole;

s22, adjusting the second panel positioning mechanism so that the laser axis emitted from the laser positioning hole of the first panel passes through the laser positioning hole of the corresponding position of the second panel.

10. The multi-optical axis parallelism adjustment method according to claim 9, wherein the step S30 includes: adjusting the positions of the visible light camera, the infrared camera and the laser range finder so that a visible light optical axis, an infrared optical axis and a laser optical axis are respectively coincided with the visible light positioning identification point, the infrared identification point and the laser identification point on the second panel.

Background

When the parallelism of the optical axis of the existing optical equipment is calibrated, a collimator method is mostly adopted, a large collimator capable of accommodating multiple optical axes is used, the principle that parallel light beams are reflected by a paraboloid mirror is utilized, visible light, infrared and laser imaging cameras are projected to a display to be calibrated, the operation is complex, equipment errors are easily introduced, and after calibration, certain detection means is required to be used for detecting the parallelism of the optical axis, so that the difficulty in parallel adjustment of the three optical axes is higher.

Disclosure of Invention

In order to solve the problems, the invention provides a multi-optical axis parallel adjusting device and a multi-optical axis parallel adjusting method, the laser is adopted to adjust the whole parallelism of a multi-optical path mechanism, then the position of each light source is adjusted through the position relation between each positioning point on a second target and the light source of the multi-optical path mechanism, the parallelism adjustment of the optical axis of the multi-optical path mechanism is realized, the calibration method is simple and easy to implement, the accuracy is higher, and the calibration result does not need to be verified after the optical axis parallelism is calibrated.

In order to achieve the above purpose, the invention adopts a technical scheme that:

a multi-optical-axis parallel adjusting device comprises a calibration platform, a multi-optical-path mechanism, a first target and a second target, wherein the multi-optical-path mechanism is slidably arranged on the calibration platform, and the first target is located between the calibration platform and the second target; the multi-light-path mechanism comprises a visible light camera, an infrared camera, a laser range finder, an adjusting mechanism and a multi-light-path support, the visible light camera, the infrared camera and the laser range finder are all arranged on the multi-light-path support through the adjusting mechanism, lasers are arranged on two sides of the calibration platform, laser positioning holes corresponding to the same positions of the number of the lasers are arranged on the first target and the second target, and positioning points corresponding to the same positions of the number of the light sources of the multi-light-path mechanism are arranged on the second target.

Furthermore, a coarse parallelism adjusting mechanism, a fine parallelism adjusting mechanism, a slide rail and a slide seat are arranged on the calibration platform, the coarse parallelism adjusting mechanism is arranged at the bottom supporting part of the calibration platform, the slide rail is connected with the calibration platform through the fine parallelism adjusting mechanism, the slide seat is arranged on the slide rail, the multi-light-path mechanism is arranged on the slide seat, two lasers are arranged, and the lasers are respectively positioned at two sides of the multi-light-path mechanism.

Further, the first target comprises a first support, a first panel and a first side positioning mechanism, the first panel is arranged on the first support through the first side positioning mechanism, and the first panel is provided with a laser positioning hole and an auxiliary positioning hole.

Further, the second target comprises a second support, a second panel and a second side positioning mechanism, the second panel is arranged on the second support through the second side positioning mechanism, the second panel is provided with a laser positioning hole and a positioning point, the positioning point comprises a visible light positioning identification point, an infrared identification point and a laser identification point, the laser positioning hole on the second panel and the laser positioning hole on the first panel are on the same straight line with the optical axis of the laser at the same side, and the position relationship among the visible light positioning identification point, the infrared identification point and the laser identification point is the same as the position relationship among the visible light camera, the infrared camera and the laser range finder.

Furthermore, a heating plate is arranged on one surface, far away from the first target, of the second panel.

Further, a night vision device is also included for observing the position of the laser spot.

A multi-optical axis parallel adjusting method based on the multi-optical axis parallel adjusting device comprises the following steps: s10, adjusting the calibration platform to enable the multi-light-path mechanism to be in a horizontal position; s20, arranging a first target between the second targets, and adjusting the positions of the first target and the second target so that laser of a laser on a calibration platform sequentially passes through laser positioning holes of the first target and the second target; s30, adjusting the position of the multi-optical-path mechanism, so that the optical axis of the multi-optical-path mechanism irradiates the positioning point on the second target, thereby completing the adjustment of the optical axis.

Further, the S10 includes: s11, adjusting a coarse parallelism adjusting mechanism to approximately level the calibration platform; s12, leveling the calibration platform transversely and longitudinally by means of a high-precision level meter by using a parallelism fine-adjustment mechanism.

Further, the step of S20 includes: s21, adjusting the first side positioning mechanism, so that the optical axis of the laser passes through the corresponding laser positioning hole of the first panel, and the optical axes of the visible light camera, the infrared camera and the laser range finder pass through the auxiliary positioning hole; s22, adjusting the second panel positioning mechanism so that the laser axis emitted from the laser positioning hole of the first panel passes through the laser positioning hole of the corresponding position of the second panel.

Further, the step of S30 includes: adjusting the positions of the visible light camera, the infrared camera and the laser range finder so that a visible light optical axis, an infrared optical axis and a laser optical axis are respectively coincided with the visible light positioning identification point, the infrared identification point and the laser identification point on the second panel.

Compared with the prior art, the technical scheme of the invention has the following advantages:

according to the multi-optical-axis parallel adjusting device and the multi-optical-axis parallel adjusting method, the laser is adopted to adjust the overall parallelism of the multi-optical-path mechanism, then the position of each light source is adjusted through the position relation between each positioning point on the second target and the light source of the multi-optical-path mechanism, the parallelism adjustment of the optical axis of the multi-optical-path mechanism is achieved, the calibration method is simple and easy to implement, the accuracy is high, and the calibration result does not need to be verified again after the parallelism of the optical axis is calibrated.

Drawings

The technical solution and the advantages of the present invention will be apparent from the following detailed description of the embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a front view of a multi-optic axis parallelism adjustment apparatus according to an embodiment of the invention;

FIG. 2 is a top view of a multi-optic axis parallelism adjustment apparatus in accordance with an embodiment of the present invention;

FIG. 3 is a block diagram of a multi-light-path mechanism according to an embodiment of the invention;

FIG. 4 is a block diagram of a first target according to one embodiment of the invention;

fig. 5 is a structural diagram of a second target according to an embodiment of the invention.

Reference numbers in the figures:

the laser positioning system comprises a calibration platform 1, a 11 parallelism coarse adjustment mechanism, a 12 parallelism fine adjustment mechanism, a 13 sliding rail, a 14 sliding seat, a 2 laser, a 3 multi-light-path mechanism, a 31 visible light camera, a 32 infrared camera, a 33 laser range finder, a 34 multi-light-path support, a 4 laser positioning hole, a 5 first target, a 51 first support, a 52 first panel, a 53 first side positioning mechanism, a 54 auxiliary positioning hole, a 6 second target, a 61 second support, a 62 second panel, a 63 second side positioning mechanism, a 64 heating plate, a 65 visible light positioning identification point, a 66 infrared identification point and a 67 laser identification point.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The embodiment provides a multi-optical axis parallel adjusting device, as shown in fig. 1 to 3, including a calibration platform 1, a multi-optical path mechanism 3, a first target 5 and a second target 6, wherein the multi-optical path mechanism 3 is slidably disposed on the calibration platform 1, and the first target 5 is located between the calibration platform 1 and the second target 6.

The multi-light path mechanism 3 comprises a visible light camera 31, an infrared camera 32, a laser range finder 33, an adjusting mechanism and a multi-light path support 34, wherein the visible light camera 31, the infrared camera 32 and the laser range finder 33 are all arranged on the multi-light path support 34 through respective adjusting mechanisms, and the adjusting mechanisms can respectively adjust the pitch angle and the azimuth angle of the visible light camera 31, the infrared camera 32 and the laser range finder 33, can be locked and positioned, and can realize the adjustment of the position.

The laser positioning device comprises a calibration platform 1, a first target 5, a second target 6 and a plurality of positioning points, wherein the two sides of the calibration platform 1 are provided with lasers 2, the first target 5 and the second target 6 are provided with laser positioning holes 4 corresponding to the lasers 2 in the same number and position, and the second target 6 is provided with positioning points corresponding to the multi-light-path mechanism 3 in the same number and position. Each laser 2 can emit a linear light source to sequentially pass through the laser positioning holes 4 on the first target 5 and the second target 6 at corresponding positions, so that the first target 5 and the second target 6 are positioned, and the calibration platform 1, the first target 5 and the second target 6 are adjusted to be on the same horizontal plane.

The calibration platform 1 is provided with a coarse parallelism adjusting mechanism 11, a fine parallelism adjusting mechanism 12, a sliding rail 13 and a sliding seat 14, the coarse parallelism adjusting mechanism 11 is arranged at the bottom supporting part of the calibration platform 1, the sliding rail 13 is connected with the calibration platform 1 through the fine parallelism adjusting mechanism 12, the sliding seat 14 is arranged on the sliding rail 13, the multi-light-path mechanism 3 is arranged on the sliding seat 14, the number of the lasers 2 is two, and the lasers 2 are respectively positioned at two sides of the multi-light-path mechanism 3. The slide carriage 14 can freely slide on the calibration platform 1, an axis where the length of the slide rail 13 is located is perpendicular to the planes where the first target 5 and the second target 6 are located, and the slide rail 13 is used for verifying whether the calibration result of the multi-optical path system is consistent at each part of the slide rail 13 or not, and is used as a direct verification means for the calibration result.

As shown in fig. 4, the first target 5 includes a first bracket 51, a first panel 52, and a first side positioning mechanism 53, the first panel 52 is disposed on the first bracket 51 through the first side positioning mechanism 53, and the first panel 52 is provided with a laser 2 positioning hole and an auxiliary positioning hole 54. The first side positioning mechanism 53 is configured to adjust the height of the first panel 52, so that the line light source of the laser 2 smoothly passes through the laser positioning hole 4 on the first panel 52, and after the position of the first panel 52 is adjusted by the first side positioning mechanism 53, the position can be locked, and the calibration precision is prevented from being affected by unstable position. The auxiliary positioning hole 54 is used for intercepting the light spot of the laser range finder 33, and the light spot after large divergence is intercepted to a proper size by the auxiliary positioning hole due to certain divergence of the laser emitted by the laser range finder 33, so that calibration is convenient.

As shown in fig. 5, the second target 6 includes a second bracket 61, a second panel 62 and a second side positioning mechanism 63, the second panel 62 is disposed on the second bracket 61 through the second side positioning mechanism 63, the second panel 62 is provided with a laser positioning hole 4 and positioning points, the positioning points include a visible light positioning identification point 65, an infrared identification point 66 and a laser identification point 67, the laser positioning hole 4 on the second panel 62 and the laser positioning hole 4 on the first panel 52 are on the same straight line with the optical axis of the laser 2 on the same side, and the positional relationship between the visible light positioning identification point 65, the infrared identification point 66 and the laser identification point 67 is the same as the positional relationship between the visible light camera 31, the infrared camera 32 and the laser range finder 33.

The second side positioning mechanism 63 is configured to adjust the height of the second panel 62, so that the line light source of the laser 2 smoothly passes through the laser positioning hole 4 on the second panel 62, and after the second side positioning mechanism 63 has adjusted the position of the second panel 62, the position can be locked, thereby avoiding the influence of unstable position on the calibration accuracy. A heat generating plate 64 is provided on a surface of the second panel 62 remote from the first target 5. The heat generating plate 64 is behind the second panel 62, the heat generating plate 64 is heated up after being electrified, and the infrared camera can detect the heat source point passing through the infrared identification point 66 on the second panel 62. And in the calibration process, the visible light cross center is coincided with the visible light identification point center, and the infrared camera cross center is coincided with the infrared identification point center, so that the parallel calibration of the corresponding camera optical axis is completed.

The multi-optical-axis parallel adjusting device further comprises a night vision device used for observing the position of the laser spot. For assisting the calibration tool, a night vision device is utilized to observe the position of a laser spot in real time and adjust the laser spot to enable the laser spot to pass through the auxiliary positioning hole of the first target and irradiate on the laser identification point of the second target.

The invention also provides a multi-optical axis parallel adjusting method based on the multi-optical axis parallel adjusting device, which comprises the following steps: s10 adjusts the calibration platform 1 so that the multi-path mechanism 3 is in a horizontal position. S20, positioning the first target 5 between the second targets 6, and adjusting the positions of the first target 5 and the second target 6, so that the laser of the laser 2 on the calibration platform 1 sequentially passes through the laser 2 positioning holes of the first target 5 and the second target 6. S30, adjusting the position of the multi-light path mechanism 3 so that the optical axis of the multi-light path mechanism 3 irradiates the positioning point on the second target 6, thereby completing the adjustment of the optical axis.

The S10 includes: s11, adjusting the rough parallelism adjusting mechanism 11 to roughly level the calibration platform 1. S12 leveling the calibration platform 1 laterally and longitudinally with the aid of a high-precision level gauge using the fine parallelism adjusting mechanism 12.

The step of S20 includes: s21 adjusts the first side positioning mechanism 53 so that the optical axis of the laser 2 passes through the corresponding laser 2 positioning hole of the first panel 52, and the optical axes of the visible light camera 31, the infrared camera 32, and the laser range finder 33 pass through the auxiliary positioning hole 54. S22, adjusting the positioning mechanism of the second panel 62, so that the laser axis emitted from the positioning hole of the laser 2 of the first panel 52 passes through the positioning hole 4 of the second panel 62. At this time, the calibration platform 1, the first target 5 and the second target 6 are in theoretical horizontal positions, and three-optical-axis calibration can be further performed. Preferably, the distance between the first target 5 and the calibration platform 1 is 20 ± 1 m, and the distance between the second target 6 and the first target 5 is 22 ± 1 m.

The step of S30 includes: the visible light camera 31, the infrared camera 32, and the laser range finder 33 are mounted on the multi-light path bracket 34, and then the multi-light path system 34 is mounted on the carriage 14. Adjust respectively the visible light camera 31, infrared camera 32 and the position of laser range finder 33 for visible light optical axis, infrared optical axis and laser optical axis respectively with on the second panel 62 visible light location identification point 65 infrared identification point 66 and laser identification point 67 coincide.

Adjusting an adjusting mechanism on the multi-light path bracket 34 for adjusting the azimuth and the pitch angle of the visible light camera 11, and coinciding the center of the visible light cross with the visible light positioning mark point 65. And adjusting an adjusting mechanism used for adjusting the azimuth and the pitch angle of the infrared camera 12 on the multi-light-path support 34 to enable the infrared cross center to coincide with the infrared identification point 67. And adjusting an adjusting mechanism which is used for adjusting the azimuth and the pitch angle of the laser range finder 33 on the multi-light-path support 34, and enabling the laser cross center to coincide with the laser identification point 67.

The above description is only an exemplary embodiment of the present invention, and not intended to limit the scope of the present invention, and all equivalent structures or equivalent processes that are transformed by the content of the present specification and the attached drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.