CN117213406A - Device and method for detecting parallelism of emergent light of collimator - Google Patents
Device and method for detecting parallelism of emergent light of collimator Download PDFInfo
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- CN117213406A CN117213406A CN202311486448.4A CN202311486448A CN117213406A CN 117213406 A CN117213406 A CN 117213406A CN 202311486448 A CN202311486448 A CN 202311486448A CN 117213406 A CN117213406 A CN 117213406A
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Abstract
The application discloses a device and a method for detecting parallelism of emergent light of a collimator, and belongs to the technical field of collimator parallelism detection. The parallel light pipe emergent light parallelism detection device comprises a workbench, a guide rail arranged on the workbench, a movable plate arranged between the workbench and the guide rail and along the length direction of the guide rail, and a parallel light assembly; the guide rail is connected with a sliding block in a sliding manner, a pentaprism is arranged on the sliding block, a CCD camera is further arranged at the end part of the guide rail, and a rotating shaft connected with the guide rail in a rotating manner is arranged at one end, away from the CCD camera, of the movable plate. The test parallelism structure of the detection device is an integral, and is convenient and fast; during testing, only the penta prism structure rotates at a small angle to align with emergent light, a cross reticle image is arranged on the CCD camera to detect, a detection light path is not required to be built again, and the parallelism detection efficiency and the detection precision of the emergent light of the collimator are improved conveniently.
Description
Technical Field
The application relates to the technical field of collimator detection and metering, in particular to a collimator emergent light parallelism detection device and a collimator emergent light parallelism detection method.
Background
The existing collimator emergent light parallelism detection is carried out through a pentaprism and a theodolite. When the system image quality meets the requirement in general debugging, a penta prism translation structure is placed at the light outlet end, a focal plane placement target is a cross reticle, the visible light source irradiates the cross reticle and then emits parallel light through an optical system, the emitted parallel light is turned by 90 degrees through the penta prism and then forms a cross reticle image on the theodolite, and when the penta prism translates along the whole caliber of the emitted light, the angle variation of the cross reticle image can be read on the theodolite, namely the parallelism of the emitted light beams of the collimator is obtained.
However, when the parallelism of the existing collimator is adjusted, because the translation structure of the theodolite and the pentaprism is not integral, the optical path between the theodolite and the pentaprism is required to be built again during each measurement, and the emergent light of the theodolite and the collimator is required to be adjusted and aligned, so that the theodolite can detect the cross image, and the adjustment is inconvenient. Based on this, a novel collimator emergent light parallelism detection device and a detection method thereof are proposed.
Disclosure of Invention
The application aims to: the application provides a novel collimator emergent light parallelism detection device and a detection method thereof for solving the problems in the prior art.
The technical scheme is as follows: the application relates to a parallel light pipe emergent light parallelism detection device, which comprises a workbench and further comprises:
the guide rail is arranged on the workbench, a sliding block is connected to the guide rail in a sliding way, a pentaprism is arranged on the sliding block, and a CCD camera is further arranged at the end part of the guide rail; the bottom of the guide rail is provided with a support plate, a screw rod is connected with the support plate in a rotating way, one end of the screw rod is provided with a knob, the screw rod is connected with a sleeve in a threaded way, and a connecting block is arranged between the sleeve and the sliding block;
the movable plate is positioned between the workbench and the guide rail and is arranged along the length direction of the guide rail, and one end of the movable plate, which is far away from the CCD camera, is provided with a rotating shaft which is rotationally connected with the guide rail; the screw rod is connected with a worm, and a worm wheel meshed with the worm is arranged on the rotating shaft;
and the parallel light assembly comprises a collimator body arranged on the workbench and a cross reticle arranged in the collimator body.
Furthermore, a light-emitting source is arranged at the light incident end of the collimator body adopted by the device, and the direction of emergent light of the collimator body, which is incident to the pentaprism, is perpendicular to the translation direction of the sliding block.
Further, a knob adopted by the device is connected with a sliding rod in a sliding way, two ends of the sliding rod are respectively provided with a pushing block and a first piston, and a movable groove for sliding of the first piston is formed in the screw rod.
Further, a limit rod is arranged at one end, far away from the rotating shaft, of a guide rail adopted by the device, an arc-shaped limit groove for the movement of the limit rod is formed in the movable plate, a pneumatic cavity is formed in the limit rod, and an air duct is communicated between the pneumatic cavity and the movable groove.
Further, a first elastic element with two ends respectively connected with the push block and the knob is sleeved on a slide rod adopted by the device.
Further, a second piston is slidably connected in the pneumatic cavity, and a second elastic element is arranged between the second piston and the inner wall of the pneumatic cavity.
Further, a movable rod connected with the limiting rod in a sliding manner is arranged on one side, away from the second elastic element, of the second piston adopted by the device, gear shaping is arranged at the bottom of the movable rod, and an arc tooth plate which is movably propped against the gear shaping is arranged in the arc limiting groove.
Further, one end of a guide rail adopted by the device, which is far away from the rotating shaft, is connected with a fixing seat, the bottom of the fixing seat is provided with a groove, and a ball which is movably propped against the movable plate is movably connected in the groove.
Further, a connecting rod is arranged at the top of a second piston adopted by the device, a cleaning plate is arranged at one end, far away from the second piston, of the connecting rod, and the cleaning plate is movably propped against a lens of the CCD camera.
The application discloses a method for detecting the parallelism of emergent light of a collimator by adopting the device, which comprises the following steps:
s1: the CCD camera image sensitive surface is adjusted to be perpendicular to the light which is turned by 90 degrees by the pentaprism and receives the light to the center of the image sensitive surface, so that the CCD camera is used for forming an image of the pentaprism turning cross reticle;
s2: the height of the movable plate is regulated to ensure that the center height of the emergent light caliber of the collimator body is consistent with the receiving center of the pentaprism, and the translation stroke of the pentaprism is ensured to comprise the emergent light full caliber;
s3: after rough alignment, a cross reticle is arranged at the focal plane of the collimator body and irradiated by a visible light source, and after the pentaprism receiving surface is vertically aligned with the emergent light of the collimator body, a CCD camera receives the image of the cross reticle;
s4: and translating the pentaprism to the full caliber of the collimator body, and inputting the focal length value of the collimator after the CCD camera records the imaging variation, so that the parallelism of emergent light of the collimator can be displayed.
The beneficial effects are that: compared with the prior art, the application has the remarkable advantages that:
1. according to the device, an existing detection method of the pentaprism and the theodolite is changed into a detection method of the pentaprism and the CCD camera, namely, the CCD camera is used for replacing the theodolite and the pentaprism to be integrated into a whole, only a small-angle rotation of the pentaprism structure is needed to be aligned with emergent light during testing, a cross reticle image is arranged on the CCD camera to detect, a detection light path is not needed to be built again, a moving quantity value of the cross reticle image on an image sensitive surface and the focal length calculation of the collimator are converted into the collimator emergent light parallelism through the CCD camera, the numerical value of the collimator emergent light parallelism can be displayed only by inputting the detected focal length value of the collimator, and the collimator emergent light parallelism detection efficiency and the collimator detection precision are improved conveniently;
2. according to the device, the knob is rotated, the screw rod is driven to rotate by the knob, the sleeve in threaded connection with the outer side drives the sliding block to slide on the guide rail through the connecting block when the screw rod rotates, the sliding block drives the pentaprism to translate on the full caliber of the collimator, in the process, the screw rod on the outer side of the screw rod is meshed with the worm gear on the rotating shaft, the pentaprism can rotate in a small-angle plane direction when translating, and the receiving surface of the pentaprism is used for always and vertically aligning with emergent light of the collimator, so that imaging variation can be recorded by a CCD (charge coupled device) camera conveniently, and the parallelism detection efficiency and the detection precision of the emergent light of the collimator are improved;
3. according to the device, the pushing block is pushed before the knob is turned, so that the pushing block drives the first piston to move in the movable groove through the sliding rod, air in the movable groove enters the pneumatic cavity through the air guide pipe, the second piston in the pneumatic cavity is forced to move upwards, the connecting rod on the upper side of the second piston drives the cleaning plate to wipe the lens of the CCD camera, and the imaging quality of the image-sensitive surface of the CCD camera is guaranteed; when the second piston moves upwards, the movable rod can drive the gear shaping to move upwards, so that the rotation restriction of the guide rail is relieved, and the guide rail can be conveniently rotated by a worker; in addition, after the guide rail adjustment is finished, the working personnel do not act on the push block and the knob any more, the push block is pushed by the first elastic element to reset, and the second piston is pushed by the second elastic element to reset in the limiting rod, so that the movable rod drives the gear shaping and the arc tooth plate in the arc limiting groove to be clamped, the guide rail is locked and fixed, and the stability of the cross reticle image on the CCD camera is ensured.
Drawings
FIG. 1 is a schematic perspective view of the present application;
FIG. 2 is a schematic view of the external structure of the movable plate of the present application;
FIG. 3 is a schematic view of a part of the movable plate according to the present application;
FIG. 4 is a schematic cross-sectional view of a movable plate according to the present application;
FIG. 5 is an enlarged partial view of portion A of FIG. 4;
FIG. 6 is a schematic cross-sectional view of a screw of the present application;
FIG. 7 is a schematic cross-sectional view of a stop lever according to the present application;
in the figure: 1. a work table; 2. a guide rail; 201. a slide block; 202. a pentaprism; 203. a CCD camera; 3. a movable plate; 301. a rotating shaft; 3011. a worm wheel; 302. an arc-shaped limit groove; 3021. arc rack plate; 4. a parallel light assembly; 401. a collimator body; 402. a cross reticle; 403. a light emitting source; 5. a support plate; 501. a screw rod; 5011. a worm; 5012. a movable groove; 502. a knob; 503. a sleeve; 504. a connecting block; 6. a fixing seat; 601. a groove; 602. a ball; 7. a limit rod; 8. a slide bar; 801. a pushing block; 802. a first piston; 803. a first elastic element; 9. a pneumatic chamber; 901. a second piston; 902. a second elastic element; 903. a movable rod; 904. gear shaping; 10. an air duct; 11. a connecting rod; 111. a cleaning plate; 12. a screw; 121. a threaded pipe.
Detailed Description
The technical scheme of the application is further described in detail below with reference to the accompanying drawings.
It should be noted that the CCD camera adopted by the application has the functions of image processing and software operation output, can input the focal length value of the collimator to be detected, and can display the parallelism value of the collimator more accurately by software analysis operation. The CCD camera adopts domestic brand, model J5472-5GM and can be directly purchased from the market.
Referring to fig. 1, 2, 3 and 4, the collimator light-emission parallelism detecting apparatus of the present application includes a table 1, and further includes: the guide rail 2 is arranged on the workbench 1, a sliding block 201 is connected to the guide rail 2 in a sliding way, a pentaprism 202 is arranged on the sliding block 201, and a CCD camera 203 is further arranged at the end part of the guide rail 2; the movable plate 3, the movable plate 3 is arranged between the workbench 1 and the guide rail 2 and along the length direction of the guide rail 2, and one end of the movable plate 3 far away from the CCD camera 203 is provided with a rotating shaft 301 which is rotationally connected with the guide rail 2; and a collimator assembly 4, the collimator assembly 4 including a collimator body 401 provided on the table 1 and a cross reticle 402 provided in the collimator body 401.
Further, the light incident end of the collimator body 401 is provided with a light emitting source 403, and the direction of the light emitted from the collimator body 401 entering the pentaprism 202 is perpendicular to the translation direction of the slider 201.
Specifically, the pentaprism 202 is installed on the guide rail 2 through the sliding block 201, the direction perpendicular to the translation of the sliding block 201 is the direction that the emergent light of the collimator body 401 is incident to the pentaprism 202, the CCD camera 203 is installed at one end part of the guide rail 2 in the moving direction of the sliding block 201, the image sensitive surface of the CCD camera 203 is perpendicular to the light which is folded by 90 degrees by the pentaprism 202 and receives the light to the center of the image sensitive surface, the image of the cross reticle 402 is folded by the pentaprism 202 for the CCD camera 203, the movable plate 3 is integrally installed at the light outlet of the collimator body 401, the emergent light caliber center height of the collimator body 401 is consistent with the receiving center of the pentaprism 202, after rough alignment, the cross reticle 402 is installed at the focal surface of the collimator body 401 and irradiated by the light emitting source 403, the CCD camera 203 can receive the image of the cross reticle 402 after the receiving surface of the pentaprism 202 is vertically aligned with the emergent light of the collimator body 401, the sliding block 201 is moved, the whole collimator body 401 is translated, the whole collimator body 401 is observed, the whole collimator is translated, the image of the cross reticle 402 is moved on the image sensitive surface, the image of the CCD camera 203 is moved, the moving variable quantity of the image of the cross reticle 402 is in the image plane, and the image parallel parallelism requirement is calculated according to whether the moving pixel is met, and the parallelism requirement is met or not is judged preliminarily; according to the application, the detection method of the pentaprism 202 and the theodolite is changed into the detection method of the pentaprism 202 and the CCD camera 203, namely, the CCD camera 203 is used for replacing the theodolite and the pentaprism 202 to be integrated into a whole, only the pentaprism 202 is required to rotate at a small angle and align with emergent light during testing, the image of the cross reticle 402 on the CCD camera 203 can be detected, a detection light path is not required to be built again, the CCD camera 203 is used for converting the moving quantity value of the image of the cross reticle 402 on the image sensitive surface and the focal length calculation of the collimator into the collimator emergent light parallelism, and after the software is used for making an algorithm, the display interface can display the value of the collimator emergent light parallelism only by inputting the detected focal length value of the collimator, so that the collimator emergent light parallelism detection efficiency and the collimator detection precision can be improved conveniently.
Referring to fig. 1, 2, 3 and 4, a support plate 5 is arranged at the bottom of the guide rail 2, a screw rod 501 is rotatably connected to the support plate 5, a knob 502 is arranged at one end of the screw rod 501, a sleeve 503 is connected to the screw rod 501 in a threaded manner, and a connecting block 504 is arranged between the sleeve 503 and the slider 201.
Further, a worm 5011 is connected to the screw 501, and a worm wheel 3011 engaged with the worm 5011 is provided to the rotation shaft 301. Specifically, when the pentaprism 202 is driven to move along the direction of the guide rail 2, the knob 502 can be rotated, the knob 502 drives the screw rod 501 to rotate, the sleeve 503 on the outer side drives the sliding block 201 to move through the connecting block 504 when the screw rod 501 rotates, the sliding block 201 drives the pentaprism 202 to move along the direction of the guide rail 2, the pentaprism 202 translates the whole collimator full caliber, in the process, the screw rod 12 on the outer side of the screw rod 501 is meshed with the worm gear 3011 on the rotating shaft 301, so that the plane orientation of the pentaprism 202 can be rotated in a small angle when translating, the receiving surface of the pentaprism 202 is used for always and vertically aligning the emergent light of the collimator, thereby being convenient for the CCD camera 203 to record imaging variation, and improving the parallelism detection efficiency and the detection precision of the emergent light of the collimator.
Referring to fig. 4 and 5, one end of the guide rail 2 far away from the rotation shaft 301 is connected with a fixed seat 6, a groove 601 is formed in the bottom of the fixed seat 6, and a ball 602 which is movably abutted against the movable plate 3 is movably connected in the groove 601. Specifically, during testing, the pentaprism 202 rotates at a small angle to align with the emergent light of the collimator, when the guide rail 2 rotates around the rotating shaft 301, the other end of the guide rail 2 slides on the movable plate 3 through the ball 602, on one hand, the end of the guide rail 2 is supported, the moving stability of the guide rail 2 is improved, on the other hand, the abrasion of the guide rail 2 is reduced when the guide rail 2 rotates, and the service life of the device is prolonged.
Referring to fig. 2, 4 and 5, a limit lever 7 is disposed at one end of the guide rail 2 far from the rotation shaft 301, and an arc-shaped limit groove 302 for moving the limit lever 7 is disposed on the movable plate 3. Specifically, when the guide rail 2 rotates around the rotation shaft 301, the other end of the guide rail 2 drives the stop lever 7 to slide in the arc-shaped stop groove 302, so as to limit the rotation amplitude of the guide rail 2 and the pentaprism 202.
Referring to fig. 4, fig. 5, fig. 6 and fig. 7, a sliding rod 8 is slidingly connected to the knob 502, two ends of the sliding rod 8 are respectively provided with a push block 801 and a first piston 802, a first elastic element 803 with two ends connected with the push block 801 and the knob 502 is sleeved on the sliding rod 8, a movable groove 5012 for sliding the first piston 802 is formed in the screw rod 501, a pneumatic cavity 9 is formed in the limit rod 7, an air duct 10 is communicated between the pneumatic cavity 9 and the movable groove 5012, a second piston 901 is slidingly connected in the pneumatic cavity 9, a second elastic element 902 is arranged between the second piston 901 and the inner wall of the pneumatic cavity 9, a movable rod 903 slidingly connected with the limit rod 7 is arranged on one side, away from the second elastic element 901, of the bottom of the movable rod 903 is provided with a gear shaping 904, and an arc-shaped rack plate 3021 which is movably abutted to the gear shaping 904 is arranged in the arc-shaped limit groove 302.
Further, a connecting rod 11 is disposed at the top of the second piston 901, a cleaning plate 111 is disposed at one end of the connecting rod 11 away from the second piston 901, and the cleaning plate 111 is movably abutted against the lens of the CCD camera 203. Specifically, push block 801 is pushed before knob 502 is rotated, make push block 801 drive first piston 802 in movable groove 5012 through slide bar 8 and remove, make the air in the movable groove 5012 get into pneumatic cavity 9 through air duct 10, it is to be noted that the junction of air duct 10 and lead screw 501 is provided with the rotation joint, lead screw 501 is rotated and is led to the air duct 10 to twist reverse when preventing, influence its air guide effect, the air that gets into in the pneumatic cavity 9 promotes second piston 901, make the connecting rod 11 of second piston 901 upside drive cleaning plate 111 move up and to the camera lens of CCD camera 203 clean, guarantee CCD camera 203 image quality on the sensitive surface, and still accessible movable rod 903 drive gear shaping 904 when moving up, the rotation restriction of guide rail 2 is relieved, make things convenient for the staff to rotate guide rail 2, and then can adjust the angle when penta prism 202 moves, and after the staff finishes adjusting guide rail 2, no longer lead screw 801 and knob 502 effort, push block 801 receives first elastic element to promote reset, second piston 3022 promotes the second elastic element to drive cleaning plate 111 and to the camera lens of CCD 203, guarantee that CCD camera 203 is moved up to the gear shaping plate 904, guarantee that the gear shaping plate is moved in the movable rod 302 is locked with the movable rod 302, and then the arc-shaped plate 402 is fixed to the limit plate 402.
Referring to fig. 1, 2 and 3, a screw 12 is fixedly arranged on the workbench 1, a threaded pipe 121 is connected to the outer side of the screw 12 in a threaded manner, and the threaded pipe 121 is rotatably connected with the bottom of the movable plate 3. Specifically, the movable plate 3 is integrally installed at the light outlet of the collimator body 401, and the threaded pipe 121 is rotated to enable the threaded pipe 121 to move relatively with the screw 12 on the workbench 1, so that the height of the movable plate 3 is adjusted, the central height of the emergent light caliber of the collimator body 401 is consistent with the receiving center of the pentaprism 202, and the translational stroke of the pentaprism 202 is ensured to comprise the emergent light full caliber.
The application adopts the detection method of the collimator emergent light parallelism detection device, which comprises the following steps:
s1: the penta prism 202 is arranged on the guide rail 2 through the sliding block 201, the translation direction of the sliding block 201 is perpendicular to the direction of incidence of emergent light of the collimator body 401 to the penta prism 202, one end of the guide rail 2 in the moving direction of the sliding block 201 is provided with the CCD camera 203, the image sensitive surface of the CCD camera 203 is adjusted to be perpendicular to the light which is folded by 90 degrees by the penta prism 202 and receives the light to the center of the image sensitive surface, and the image is used for the CCD camera 203 to fold the image of the cross reticle 402 by the penta prism 202;
s2: the movable plate 3 is integrally arranged at the light outlet of the collimator body 401, the threaded pipe 121 and the screw 12 on the workbench 1 are relatively moved by rotating the threaded pipe 121, the height of the movable plate 3 is adjusted, the center height of the emergent light caliber of the collimator body 401 is consistent with the receiving center of the pentaprism 202, and the translational stroke of the pentaprism 202 is ensured to comprise the full caliber of emergent light;
s3: after rough alignment, a cross reticle 402 is arranged at the focal plane of the collimator body 401 and irradiated by a light-emitting source 403, and after the receiving plane of the pentaprism 202 is vertically aligned with the emergent light of the collimator body 401, the CCD camera 203 can receive the image of the cross reticle 402;
s4: then, the pentaprism 202 is translated to the full caliber of the collimator body 401, the pentaprism 202 moves along with the sliding block 201 on the guide rail 2, the movement variation of the image of the cross reticle 402 on the CCD camera 203 on the image sensitive surface is observed in the translation process, the parallelism of the emergent light beam of the collimator body 401 is calculated according to the number of the moving pixels, and whether the parallelism requirement is met or not can be primarily judged;
s5: the CCD camera 203 has the functions of image processing and software operation output, can input the focal length value of the collimator to be detected, and can display the parallelism value of the collimator body 401 more accurately by software analysis operation.
The formula for software analysis and calculation of the parallel light pipe emergent beam parallelism value theta is as follows:
θ=arctg { pixel value×10 -3 /（d×1000）}×3600″；
Wherein θ is the parallelism of the emergent light beams of the collimator, and d is the focal length.
For example, the collimator beam parallelism is generally required to be better than 3 "-5", the size of the pixel of the CCD camera 203 is 2.4 μm×2.4 μm, when the system focal length is 1 meter, the corresponding parallelism angle of one pixel is arctg (0.0024/1000) ×3600 "=0.5", and the image of the collimator cross reticle 402 with the focal length of 1 meter can meet the requirement that the parallelism is better than 3 "only when the image moves on the CCD camera 203 within 6 pixels.
Similarly, when the focal length of the collimator body 401 is f=d meters, the parallelism of the outgoing beam of the collimator is θ: θ=arctg { 0.0024/(d×1000) } ×3600 ".
When the parallel light pipe beam parallelism requirement is better than 3', the imaging movement variation range is within (6×d) pixels, so that the parallel light pipe emergent beam parallelism requirement can be met.
Claims (10)
1. The utility model provides a collimator emergent light parallelism detection device, includes workstation (1), its characterized in that still includes:
the guide rail (2) is arranged on the workbench (1), a sliding block (201) is connected to the guide rail (2) in a sliding manner, a pentaprism (202) is arranged on the sliding block (201), and a CCD camera (203) is further arranged at the end part of the guide rail (2); the bottom of the guide rail (2) is provided with a support plate (5), a screw rod (501) is rotationally connected to the support plate (5), one end of the screw rod (501) is provided with a knob (502), a sleeve (503) is connected to the screw rod (501) in a threaded manner, and a connecting block (504) is arranged between the sleeve (503) and the sliding block (201);
the movable plate (3) is positioned between the workbench (1) and the guide rail (2) and is arranged along the length direction of the guide rail (2), and a rotating shaft (301) which is rotationally connected with the guide rail (2) is arranged at one end of the movable plate (3) away from the CCD camera (203); a worm (5011) is connected to the screw rod (501), and a worm wheel (3011) meshed with the worm (5011) is arranged on the rotating shaft (301);
a collimator assembly (4), the collimator assembly (4) comprising a collimator body (401) arranged on the table (1) and a cross reticle (402) arranged in the collimator body (401).
2. The collimator exit light parallelism detection apparatus according to claim 1, wherein a light-emitting source (403) is provided at a light-incident end of the collimator body (401), and a direction in which the collimator body (401) exit light is incident to the pentaprism (202) is perpendicular to a direction in which the slider (201) is translated.
3. The parallel light pipe emergent light parallelism detection device according to claim 1, wherein the knob (502) is slidably connected with a slide bar (8), two ends of the slide bar (8) are respectively provided with a push block (801) and a first piston (802), and the screw rod (501) is provided with a movable groove (5012) for sliding of the first piston (802).
4. The parallel light pipe emergent light parallelism detection device according to claim 3, wherein one end of the guide rail (2) far away from the rotating shaft (301) is provided with a limiting rod (7), the movable plate (3) is provided with an arc limiting groove (302) for the movement of the limiting rod (7), the limiting rod (7) is provided with a pneumatic cavity (9), and an air duct (10) is communicated between the pneumatic cavity (9) and the movable groove (5012).
5. The parallel light pipe emergent light parallelism detecting device according to claim 3, wherein the sliding rod (8) is sleeved with a first elastic element (803) with two ends respectively connected with the pushing block (801) and the knob (502).
6. The parallel light pipe emergent light parallelism detecting device according to claim 4, wherein a second piston (901) is slidably connected in the pneumatic cavity (9), and a second elastic element (902) is arranged between the second piston (901) and the inner wall of the pneumatic cavity (9).
7. The parallel light pipe emergent light parallelism detecting device according to claim 6, wherein a movable rod (903) slidingly connected with the limiting rod (7) is arranged on one side of the second piston (901) away from the second elastic element (902), a gear shaping (904) is arranged at the bottom of the movable rod (903), and an arc toothed plate (3021) movably abutted against the gear shaping (904) is arranged in the arc limiting groove (302).
8. The parallel light pipe emergent light parallelism detection device according to claim 1, wherein one end of the guide rail (2) far away from the rotating shaft (301) is connected with a fixing seat (6), a groove (601) is formed in the bottom of the fixing seat (6), and a ball (602) which is movably abutted against the movable plate (3) is movably connected in the groove (601).
9. The parallel light pipe emergent light parallelism detection device according to claim 7, wherein a connecting rod (11) is arranged at the top of the second piston (901), a cleaning plate (111) is arranged at one end of the connecting rod (11) far away from the second piston (901), and the cleaning plate (111) is movably abutted against a lens of the CCD camera (203).
10. A method of detecting using the detection apparatus of claim 1, comprising the steps of:
s1: the method comprises the steps of adjusting an image sensitive surface of a CCD camera (203) to be perpendicular to light rays which are folded by 90 degrees by a pentaprism (202) and receiving the light rays to the center of the image sensitive surface, and enabling the CCD camera (203) to be folded by the pentaprism (202) to form an image of a cross reticle (402);
s2: the height of the movable plate (3) is adjusted to ensure that the center height of the emergent light caliber of the collimator body (401) is consistent with the receiving center of the pentaprism (202), and the translation stroke of the pentaprism (202) is ensured to comprise the full caliber of emergent light;
s3: after rough alignment, a cross reticle (402) is arranged at the focal plane of the collimator body (401) and irradiated by a light-emitting source (403), and after the receiving surface of the pentaprism (202) is vertically aligned with the emergent light of the collimator body (401), a CCD camera (203) receives the image of the cross reticle (402);
s4: and translating the pentaprism (202) to the full caliber of the collimator body (401), and inputting the focal length value of the collimator after the CCD camera (203) records the imaging variation, so that the parallelism of emergent light of the collimator can be displayed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311486448.4A CN117213406B (en) | 2023-11-09 | 2023-11-09 | Device and method for detecting parallelism of emergent light of collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311486448.4A CN117213406B (en) | 2023-11-09 | 2023-11-09 | Device and method for detecting parallelism of emergent light of collimator |
Publications (2)
| Publication Number | Publication Date |
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| CN117213406A true CN117213406A (en) | 2023-12-12 |
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