CN110530298B - Passive auto-collimation parallelism calibration platform and calibration system - Google Patents
Passive auto-collimation parallelism calibration platform and calibration system Download PDFInfo
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- CN110530298B CN110530298B CN201910745349.0A CN201910745349A CN110530298B CN 110530298 B CN110530298 B CN 110530298B CN 201910745349 A CN201910745349 A CN 201910745349A CN 110530298 B CN110530298 B CN 110530298B
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- 239000000758 substrate Substances 0.000 claims abstract description 26
- 238000012360 testing method Methods 0.000 claims abstract description 21
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 238000001514 detection method Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 2
- 230000007547 defect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B11/27—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B11/272—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes using photoelectric detection means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Mounting And Adjusting Of Optical Elements (AREA)
- Measurement Of Optical Distance (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Studio Devices (AREA)
Abstract
The utility model relates to the technical field of optical detection, in particular to a passive auto-collimation parallelism calibration platform and a calibration system, wherein the calibration platform comprises a substrate, a semi-reflection semi-transparent lens module for reflecting parallel light rays is arranged on the substrate, a semi-reflection semi-transparent reflecting surface forming an angle of 45 degrees with the substrate is arranged in the semi-reflection semi-transparent lens module, one side of the semi-reflection semi-transparent lens module is provided with an image forming module which is arranged opposite to the semi-reflection semi-transparent reflecting surface so as to enable the reflected parallel light rays to enter, and the bottom of the semi-reflection semi-transparent lens module is positioned at the lower side of the semi-reflection semi-transparent reflecting surface and is provided with a total reflecting surface; the calibration system comprises a collimator for emitting parallel rays and the passive auto-collimation parallelism calibration platform. The application adopts the high-resolution image sensor, receives and tests the image transmitted by the image card through the prism plane, then calculates and judges that the image card is in the inclination angle through software, combines software to display the inclination angle data in real time to adjust the verticality, and has more basis for calibration.
Description
[ field of technology ]
The application relates to the technical field of optical detection, in particular to a passive auto-collimation parallelism calibration platform and a calibration system.
[ background Art ]
At present, the collimator field does not have an instrument for receiving the test chart card to calibrate the parallelism, and the traditional mode for judging the parallelism is mainly used for calibrating by an autocollimator or a level meter, however, the following defects exist when the parallelism of the test chart card is judged by adopting the two modes: 1. the volume of the auto-collimator is too large, and the available adjusting equipment is limited to a large extent; 2. the leveling instrument has limited adjustment precision and no detection data.
[ invention ]
In order to solve the problem that the existing collimator field does not have an instrument for receiving a test chart card to calibrate parallelism, the application provides a passive auto-collimation parallelism calibration platform and a calibration system.
The application adopts the technical scheme for solving the technical problems:
the passive auto-collimation parallelism calibration platform comprises a substrate, a semi-reflection semi-transparent lens module used for reflecting parallel light rays is arranged on the substrate, a semi-reflection semi-transparent reflecting surface forming a 45-degree angle with the substrate is arranged in the semi-reflection semi-transparent lens module, one side of the semi-reflection semi-transparent lens module is provided with an image forming module which is arranged opposite to the semi-reflection semi-transparent reflecting surface and is used for enabling the reflected parallel light rays to enter, and the bottom of the semi-reflection semi-transparent lens module is located on the lower side of the semi-reflection semi-transparent reflecting surface and is provided with a total reflection surface.
The passive auto-collimation parallelism calibration platform comprises the image forming module, the image forming module comprises an image sensor and a lens fixed on the image sensor, and the lens is arranged opposite to the half-reflecting and half-transmitting lens module.
The passive auto-collimation parallelism calibration platform is characterized in that a connecting seat body for fixing the semi-reflection and semi-transmission lens module and connecting the image forming module is arranged between the image forming module and the semi-reflection and semi-transmission module.
As described above, the passive auto-collimation parallelism calibration platform is characterized in that one end of the connection seat body is provided with a test station for placing the semi-reflective and semi-transparent lens module, the other end of the connection seat body is provided with a mounting hole communicated with the test station, and the lens of the image forming module is arranged in the mounting hole.
As described above, the passive auto-collimation parallelism calibration platform is characterized in that one end of the image sensor, which is opposite to the connection base, is provided with a connection protrusion matched with the mounting hole and extending into the mounting hole, the connection protrusion is concaved inwards to form a concave hole for the rear end of the lens to extend into, and a fixing ring for fixing the lens is arranged in the concave hole.
As described above, the passive auto-collimation parallelism calibration platform is characterized in that the semi-reflective semi-transparent lens module is rotatably arranged in the test station of the connection base body by taking the axis of the image forming module as a guide, and the connection base body is provided with a rotation adjustment mechanism for adjusting the levelness of the rotation direction of the semi-reflective semi-transparent lens module.
The passive auto-collimation parallelism calibration platform comprises the screw holes formed in the upper surface and the two side surfaces of the connecting seat body and the axle center adjusting fixing screws in threaded connection with the screw holes, and the axle center of the semi-reflective and semi-transparent lens module is adjusted and then locked and fixed through the axle center adjusting fixing screws.
The passive auto-collimation parallelism calibration platform is characterized in that the substrate is further provided with a horizontal adjustment mechanism for fine adjustment of the parallelism of the semi-reflective and semi-transparent lens module, and the horizontal adjustment mechanism comprises a bottom plate arranged between the bottom surface of the image forming module and the substrate, 4 horizontal adjustment screws sequentially arranged at 4 corner edges of the bottom plate, and 4 jackscrews sequentially arranged at 4 corner edges of the bottom plate and adjacent to the corresponding horizontal adjustment screws.
As described above, the passive auto-collimation parallelism calibration platform is characterized in that the substrate is provided with the side plates fixed on the substrate to surround the semi-reflective and semi-transparent lens module, the connecting seat body and the image forming module, the upper ends of the side plates are provided with the cover plates, and the positions of the cover plates corresponding to the semi-reflective and semi-transparent lens module are provided with the light guide holes.
The passive auto-collimation parallelism calibration system comprises a collimator for emitting parallel light rays and the passive auto-collimation parallelism calibration platform.
Compared with the prior art, the passive auto-collimation parallelism calibration platform has the following advantages:
1. the high-resolution image sensor is adopted, the image is emitted through the prism plane by the test image card, then the inclination angle of the image card is calculated and judged through software, the inclination angle data is displayed in real time by combining with the software to adjust the verticality, and the calibration is more basis.
2. A simple and stable horizontal adjusting mechanism is arranged in the prism, the perpendicularity of the prism and the substrate is adjustable, and the highest precision is +/-1 second.
3. The whole volume of the calibration platform is small, the universality is strong, and the calibration platform can adapt to equipment with different volumes for calibration.
[ description of the drawings ]
FIG. 1 is a schematic structural view of a passive auto-collimation parallelism calibration platform of the present application;
FIG. 2 is an exploded view of the passive auto-collimation parallelism calibration stage of the present application;
fig. 3 is a cross-sectional view taken along A-A of fig. 1.
[ detailed description ] of the invention
The present application will be further described with reference to the accompanying drawings and specific examples.
Referring to fig. 1 to 3, a passive auto-collimation parallelism calibration platform includes a substrate 1, a side plate 11 fixed around the substrate, and a cover plate 12 disposed at the upper end of the side plate, a semi-reflective semi-transparent lens module 2 for reflecting parallel light is disposed in an area surrounded by the substrate 1, the side plate 11 and the cover plate 12, a semi-reflective semi-transparent reflecting surface 21 forming an angle of 45 degrees with the substrate is disposed in the semi-reflective semi-transparent lens module, an image forming module 4 disposed opposite to the semi-reflective semi-transparent reflecting surface for allowing reflected parallel light to enter is disposed at one side of the semi-reflective semi-transparent lens module 2, and a total reflecting surface 22 is disposed at the lower side of the semi-reflective semi-transparent reflecting surface 21 at the bottom of the semi-reflective semi-transparent lens module 2. In this embodiment, the cover 12 is provided with a light guide hole 120 at a position corresponding to the half-reflecting and half-transmitting lens module, and the parallel light vertically entering through the light guide hole 120 is reflected by the half-reflecting and half-transmitting lens module 2 and then enters the image forming module 4.
In this embodiment, the semi-reflective and semi-transmissive lens module 2 is a prism, the image forming module 4 includes an image sensor 42 and a tele lens 41 fixed on the image sensor, and the tele lens 41 is disposed opposite to the semi-reflective and semi-transmissive lens module 2. Part of parallel light rays enter the lens after being reflected by the semi-reflection and semi-transmission reflecting surface and are imaged on the image forming module, part of parallel light rays enter the bottom surface of the prism through the semi-reflection and semi-transmission reflecting surface, return to the collimator tube which emits the parallel light rays after being totally reflected by the bottom surface, and enter the lens after being vertically reflected by the plane mirror on the collimator tube and are imaged on the image forming module. And judging whether the two images coincide or not, so as to judge whether the test pattern card on the collimator which emits parallel rays is parallel or not.
In this embodiment, a connecting seat body 3 for fixing the half-reflecting and half-transmitting lens module and simultaneously connecting the image forming module is arranged between the image forming module 4 and the half-reflecting and half-transmitting lens module 2. Specifically, one end of the connecting seat body 3 is provided with a test station 31 for placing the semi-reflective and semi-transparent lens module, the other end of the connecting seat body 3 is provided with a mounting hole 32 communicated with the test station, and a tele lens 41 of the image forming module is arranged in the mounting hole 32. In this embodiment, one end of the image sensor 42 opposite to the connection base 3 is provided with a connection protrusion 421 that cooperates with the mounting hole 32 to extend into the mounting hole, the connection protrusion 421 is concave inwards to form a concave hole into which the rear end of the lens 41 extends, and a fixing ring 43 for fixing the lens is disposed in the concave hole. The image sensor is a high-pixel CCD, and when the lens is assembled, the lens is fixed on the fixed ring after being adjusted infinitely far.
Further, the half-reflecting and half-transmitting lens module 2 is rotatably arranged in the testing station 31 of the connecting seat body 3 by taking the axis of the image forming module 4 as a guide, and the connecting seat body 3 is provided with a rotation adjusting mechanism 5 for adjusting the levelness of the rotation direction of the half-reflecting and half-transmitting lens module 2. In this embodiment, the rotation adjusting mechanism 5 includes a screw hole formed on the upper surface and two sides of the connecting seat body, and an axle center adjusting fixing screw screwed to the screw hole, and is locked and fixed by the axle center adjusting fixing screw after the half-reflecting and half-transmitting lens module adjusts its axle center. After the image forming module is assembled, the prism is sleeved into the testing station of the connecting seat body and is guided by the axle centers of the long-focus lens and the image forming module, and the prism is fixed by an axle center adjusting fixing screw after the verticality of the axle center direction is adjusted.
Preferably, the substrate 1 is further provided with a horizontal adjustment mechanism 6 for fine-adjusting the parallelism of the half-reflecting and half-transmitting lens module 2, and the horizontal adjustment mechanism 6 includes a bottom plate 61 disposed between the bottom surface of the image forming module 4 and the substrate 1, 4 horizontal adjustment screws 62 sequentially disposed at 4 corner edges of the bottom plate, and 4 jackscrews 63 sequentially disposed at 4 corner edges of the bottom plate and adjacent to the corresponding horizontal adjustment screws. After the verticality of the axis direction of the prism is well adjusted through the axis adjusting fixing screw, the parallelism of the prism relative to the substrate is further finely adjusted through 4 horizontal adjusting screws and 4 jackscrews.
In addition, the application also provides a passive auto-collimation parallelism calibration system which comprises a collimator for emitting parallel light rays and the passive auto-collimation parallelism calibration platform matched with the collimator. The process of detecting parallelism of the test chart card by the calibration system is as follows:
1. the collimator emits light at an infinite position;
2. a semi-reflective semi-transparent surface passing through the inclined surface of the prism;
3. half of the energy rays enter the bottom surface of the prism through the surface;
4. returning the pattern of the collimator test chart back to the pattern of the collimator glass after total reflection on the bottom surface;
5. half energy light enters a large-caliber long-focus lens through the surface to be imaged on a high-pixel CCD;
6. at the moment, the large-caliber long-focus lens can shoot two test patterns;
7. if the two patterns can be completely overlapped through the adjusting mechanism, the test chart card is judged to have reached parallelism.
In summary, the passive auto-collimation parallelism calibration platform of the present application has the following advantages:
1. the high-resolution image sensor is adopted, the image is emitted through the prism plane by the test image card, then the inclination angle of the image card is calculated and judged through software, the inclination angle data is displayed in real time by combining with the software to adjust the verticality, and the calibration is more basis.
2. A simple and stable horizontal adjusting mechanism is arranged in the prism, the perpendicularity of the prism and the substrate is adjustable, and the highest precision is +/-1 second.
3. The whole volume of the calibration platform is small, the universality is strong, and the calibration platform can adapt to equipment with different volumes for calibration.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the scope of the present application, but other principles and basic structures are the same or similar to the present application.
Claims (8)
1. The passive auto-collimation parallelism calibration platform comprises a substrate (1), and is characterized in that: the substrate (1) is provided with a semi-reflecting and semi-transparent lens module (2) for reflecting parallel light rays, a semi-reflecting and semi-transparent reflecting surface (21) forming an angle of 45 degrees with the substrate is arranged in the semi-reflecting and semi-transparent lens module, one side of the semi-reflecting and semi-transparent lens module (2) is provided with an image forming module (4) which is arranged opposite to the semi-reflecting and semi-transparent reflecting surface and is used for allowing the reflected parallel light rays to enter, and the bottom of the semi-reflecting and semi-transparent lens module (2) is positioned at the lower side of the semi-reflecting and semi-transparent reflecting surface (21) and is provided with a total reflecting surface (22);
the substrate (1) is also provided with a horizontal adjusting mechanism (6) for finely adjusting the parallelism of the half-reflecting and half-transmitting lens module (2), and the horizontal adjusting mechanism comprises a bottom plate (61) arranged between the bottom surface of the image forming module (4) and the substrate (1), 4 horizontal adjusting screws (62) sequentially arranged at 4 corner edges of the bottom plate, and 4 jackscrews (63) sequentially arranged at 4 corner edges of the bottom plate and adjacent to the corresponding horizontal adjusting screws;
the LED display device is characterized in that side plates (11) fixed on the substrate (1) so as to surround the semi-reflecting and semi-transmitting lens module (2), the connecting seat body (3) and the image forming module (4) are arranged on the periphery of the substrate, cover plates (12) are arranged at the upper ends of the side plates (11), and light guide holes (120) are formed in positions, corresponding to the semi-reflecting and semi-transmitting lens module (2), on the cover plates.
2. The passive auto-collimation parallelism calibration platform according to claim 1, wherein: the image forming module (4) comprises an image sensor (42) and a lens (41) fixed on the image sensor, and the lens (41) is arranged opposite to the half-reflecting and half-transmitting lens module (2).
3. The passive auto-collimation parallelism calibration platform according to claim 2, wherein: and a connecting seat body (3) for fixing the semi-reflecting and semi-transmitting lens module and simultaneously connecting the image forming module is arranged between the image forming module (4) and the semi-reflecting and semi-transmitting lens module (2).
4. A passive auto-collimation parallelism calibration platform according to claim 3, wherein: one end of the connecting seat body (3) is provided with a test station (31) for placing the semi-reflective and semi-transparent lens module, the other end of the connecting seat body (3) is provided with a mounting hole (32) communicated with the test station, and a lens (41) of the image forming module is arranged in the mounting hole (32).
5. The passive auto-collimation parallelism calibration platform according to claim 4, wherein: the image sensor (42) is relative the one end of connecting the pedestal is equipped with connecting protruding part (421) in mounting hole (32) cooperation stretches into the mounting hole, connecting protruding part (421) indent forms the confession the shrinkage pool that the rear end of camera lens (41) stretched into, be equipped with in the shrinkage pool and be used for fixed camera lens's solid fixed ring (43).
6. The passive auto-collimation parallelism calibration platform according to claim 4, wherein: the semi-reflecting and semi-transmitting lens module (2) is rotatably arranged in a testing station (31) of the connecting seat body (3) by taking the axis of the image forming module (4) as a guide, and a rotary adjusting mechanism (5) for adjusting the levelness of the rotating direction of the semi-reflecting and semi-transmitting lens module (2) is arranged on the connecting seat body (3).
7. The passive auto-collimation parallelism calibration platform according to claim 6, wherein: the rotary adjusting mechanism (5) comprises screw holes formed in the upper surface and the two side surfaces of the connecting seat body and axle center adjusting fixing screws in threaded connection with the screw holes, and the axle center of the semi-reflective and semi-transparent lens module is adjusted and then locked and fixed through the axle center adjusting fixing screws.
8. The passive auto-collimation parallelism calibration system comprises a collimator (a) for emitting parallel light rays, and is characterized in that: further comprising a passive auto-collimation parallelism calibration stage according to any one of claims 1-7.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910745349.0A CN110530298B (en) | 2019-08-13 | 2019-08-13 | Passive auto-collimation parallelism calibration platform and calibration system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910745349.0A CN110530298B (en) | 2019-08-13 | 2019-08-13 | Passive auto-collimation parallelism calibration platform and calibration system |
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| CN110530298A CN110530298A (en) | 2019-12-03 |
| CN110530298B true CN110530298B (en) | 2024-02-13 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112764165B (en) * | 2021-01-12 | 2023-04-11 | 北京凯普林光电科技股份有限公司 | Adjustable optical fiber polarization collimating lens |
| CN114295078A (en) * | 2021-12-28 | 2022-04-08 | 歌尔股份有限公司 | Prism calibration device and parallelism calibration method |
| CN115342757B (en) * | 2022-10-19 | 2022-12-27 | 长春理工大学 | Device and method for detecting parallelism of mechanical shafts of coaxial double-shaft rotary table |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363901A (en) * | 2013-07-15 | 2013-10-23 | 北京理工大学 | Calibration method oriented towards coaxial counterpoint micro-assembly system |
| JP2014085158A (en) * | 2012-10-19 | 2014-05-12 | Fujikura Ltd | Apparatus and method for measuring parallelism of transparent body |
| CN105424322A (en) * | 2015-11-09 | 2016-03-23 | 中国科学院长春光学精密机械与物理研究所 | Self-calibration optical axis parallelism detector and detection method |
| RU2016109398A (en) * | 2015-03-30 | 2017-09-20 | Открытое Акционерное Общество "Пеленг" | METHOD FOR CALIBRATING A LARGE-SIZED OPTICAL-ELECTRONIC APPARATUS AND DEVICE FOR ITS IMPLEMENTATION |
| CN210833455U (en) * | 2019-08-13 | 2020-06-23 | 中山依瓦塔光学有限公司 | Passive auto-collimation parallelism calibration platform |
-
2019
- 2019-08-13 CN CN201910745349.0A patent/CN110530298B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014085158A (en) * | 2012-10-19 | 2014-05-12 | Fujikura Ltd | Apparatus and method for measuring parallelism of transparent body |
| CN103363901A (en) * | 2013-07-15 | 2013-10-23 | 北京理工大学 | Calibration method oriented towards coaxial counterpoint micro-assembly system |
| RU2016109398A (en) * | 2015-03-30 | 2017-09-20 | Открытое Акционерное Общество "Пеленг" | METHOD FOR CALIBRATING A LARGE-SIZED OPTICAL-ELECTRONIC APPARATUS AND DEVICE FOR ITS IMPLEMENTATION |
| CN105424322A (en) * | 2015-11-09 | 2016-03-23 | 中国科学院长春光学精密机械与物理研究所 | Self-calibration optical axis parallelism detector and detection method |
| CN210833455U (en) * | 2019-08-13 | 2020-06-23 | 中山依瓦塔光学有限公司 | Passive auto-collimation parallelism calibration platform |
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