Focal length detection device for photoelectric optical lens

Abstract

The utility model provides a focal length detection device for a photoelectric optical lens, and belongs to the technical field of optical lens focal length detection. The focal length detection device for the photoelectric optical lens comprises a bottom plate, a centering mechanism comprises a first fixing ring, a fixing rod, a second fixing ring, a sliding groove, a toothed plate and a clamping block, the first fixing ring is fixedly installed on the top of the bottom plate, and the fixing rod is fixedly installed on the inner wall of the first fixing ring. By arranging the centering mechanism, starting the first motor and driving the second gear to rotate, the gear ring drives the first gear to rotate, and by means of meshed connection of the first gear and the toothed plate and matching of the limiting groove and the limiting plate, the toothed plate drives the clamping block to move in the direction close to the center shaft of the second fixing ring, so that the lens is clamped, and the lens is clamped. And the circle center of the clamped lens is consistent with the height of the irradiation light pipe and the height of the camera, so that the problem that the height of the lens is manually adjusted by a worker is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of optical lens focal length detection, in particular to a focal length detection device for a photoelectric optical lens. Background Art

[0002] An optical lens is an optical element that is commonly used to refract, focus and modulate light. Optical lenses are widely used in many fields, including photography, microscopes, telescopes, glasses and other optical instruments. They are an important component of the optical system and are used to control the propagation and focusing of light to achieve the desired optical effect. Before leaving the factory, the optical lens needs to be tested for focal length. The test data directly determines whether the optical lens is qualified.

[0003] When using the point light source method to test optical lenses, a fixture is usually used to clamp the lens. However, the test conditions require that the light beam emitted by the irradiating light tube should be aligned with the center of the lens as much as possible. The staff can only manually adjust the height of the lens, which leads to deviations in the test results. In addition, during the test, the minimum point of the light beam passing through the convex mirror is found by the displacement of the cardboard, which requires the staff to split their attention, moving the cardboard while observing whether the light beam reaches the minimum point, which is very energy-consuming. Utility Model Content

[0004] In order to make up for the above deficiencies, the utility model provides a focal length detection device for a photoelectric optical lens, which overcomes the above technical problems or at least partially solves the above problems.

[0005] The utility model is achieved in this way:

[0006] The utility model provides a focal length detection device for a photoelectric optical lens, comprising a bottom plate,

[0007] A centering mechanism, the centering mechanism comprising:

[0008] A first fixing ring, wherein the first fixing ring is fixedly mounted on the top of the bottom plate;

[0009] A fixing rod, the fixing rod is fixedly mounted on the inner wall of the first fixing ring, and a plurality of the fixing rods are provided;

[0010] a second fixing ring, the second fixing ring being fixedly mounted on the other end of the fixing rod;

[0011] A slide groove, the slide groove is opened on the front side of the first fixing ring and the second fixing ring;

[0012] A tooth plate, the tooth plate being slidably mounted inside the slide groove;

[0013] A clamping block, the clamping block is fixedly mounted on one side of the tooth plate close to the central axis of the second fixing ring;

[0014] The detection mechanism is arranged on the top of the base plate.

[0015] In a preferred embodiment, the detection mechanism includes:

[0016] A slide plate, the slide plate being slidably mounted on the top of the bottom plate;

[0017] A support frame, the support frame is fixedly mounted on the top of the skateboard;

[0018] A camera is fixedly mounted on the top of the support frame.

[0019] In a preferred embodiment, a limiting groove is provided on the rear side of the slide groove, a limiting plate is slidably installed inside the limiting groove, the front side of the limiting plate and the rear side of the tooth plate are fixedly connected, and a clamping groove is provided on one side of the clamping block close to the central axis of the second fixing ring.

[0020] In a preferred solution, connecting plates are fixedly installed on the front and rear sides of the first fixing ring, a first gear is rotatably installed between the two connecting plates, the first gear is meshingly connected with the tooth plate, a gear ring is rotatably installed inside the first fixing ring, the gear ring is meshingly connected with the first gear, and the gear ring is staggered with the tooth plate and the limit plate.

[0021] In a preferred solution, a first motor is fixedly mounted on the front side of one of the fixing rods, a second gear is fixedly mounted on the output end of the first motor, and the second gear is meshingly connected with the ring gear.

[0022] In a preferred solution, a bearing frame is fixedly mounted on the top of the base plate, an illumination light tube is sleeved inside the bearing frame, and two fixing plates are fixedly mounted on the top of the base plate.

[0023] In a preferred solution, a screw rod is rotatably installed between the two fixed plates, a limit rod is fixedly installed between the two fixed plates, the screw rod and the limit rod are both sleeved inside the slide plate, and the screw rod and the slide plate are threadedly connected.

[0024] In a preferred solution, a second motor is fixedly mounted on the left side of one of the fixed plates, and an output end of the second motor is fixedly connected to the left side of the screw rod.

[0025] The utility model provides a focal length detection device for a photoelectric optical lens, and its beneficial effects include:

[0026] 1. By setting a centering mechanism, the first motor is started to drive the second gear to rotate, so that the ring gear drives the first gear to rotate. Through the meshing connection between the first gear and the toothed plate, and the cooperation between the limit groove and the limit plate, the toothed plate drives the clamping block to move in the direction close to the central axis of the second fixing ring, so that the lens is clamped, and the center of the clamped lens is consistent with the height of the irradiation light tube and the camera, thereby solving the problem of manual adjustment of the height of the lens by the staff.

[0027] 2. By setting up a detection mechanism, after the lens is clamped, the irradiation light tube is started to make the light beam pass through the lens, and the second motor is started to drive the screw rod to rotate. Through the threaded connection between the screw rod and the slide plate, and the cooperation of the limit rod, the slide plate drives the camera to move. In this process, the camera is controlled to take pictures continuously, and the collected information is analyzed by a computer, thereby solving the problem that the staff needs to move the reference object while observing the light beam. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure provided by the implementation method of the utility model;

[0030] Figure 2 A partial cross-sectional view of a bottom plate is provided for an embodiment of the utility model;

[0031] Figure 3 A partial cross-sectional view of the first ring is provided for an embodiment of the utility model;

[0032] Figure 4 Provided for the implementation of the utility model Figure 2 A partial enlarged view of point A in the middle.

[0033] In the figure: 1, bottom plate; 2, first fixing ring; 3, fixing rod; 4, second fixing ring; 5, slide groove; 6, tooth plate; 7, clamping block; 8, slide plate; 9, support frame; 10, camera; 11, limit groove; 12, limit plate; 13, clamping groove; 14, connecting plate; 15, first gear; 16, gear ring; 17, first motor; 18, second gear; 19, support frame; 20, irradiation light tube; 21, fixing plate; 22, screw rod; 23, limit rod; 24, second motor. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the implementation of the utility model clearer, the technical solution in the implementation of the utility model will be clearly and completely described below in conjunction with the drawings in the implementation of the utility model. Obviously, the described implementation is a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] Example

[0036] Reference Figure 1-4 The utility model provides a technical solution: a focal length detection device for a photoelectric optical lens, comprising a base plate 1, a centering mechanism comprising a first fixing ring 2, a fixing rod 3, a second fixing ring 4, a slide groove 5, a tooth plate 6 and a clamping block 7, the first fixing ring 2 is fixedly mounted on the top of the base plate 1, the fixing rod 3 is fixedly mounted on the inner wall of the first fixing ring 2, a plurality of fixing rods 3 are provided, the second fixing ring 4 is fixedly mounted on the other end of the fixing rod 3, the slide groove 5 is opened on the front side of the first fixing ring 2 and the second fixing ring 4, and the tooth plate 6 is slidably mounted inside the slide groove 5 The clamping block 7 is fixedly mounted on the side of the toothed plate 6 close to the central axis of the second fixed ring 4. The detection mechanism is arranged on the top of the bottom plate 1. A limiting groove 11 is provided on the rear side of the slide groove 5. A limiting plate 12 is slidably installed inside the limiting groove 11. The front side of the limiting plate 12 is fixedly connected to the rear side of the toothed plate 6. A clamping groove 13 is provided on the side of the clamping block 7 close to the central axis of the second fixed ring 4. A connecting plate 14 is fixedly mounted on the front and rear sides of the first fixed ring 2. A first gear 15 is rotatably mounted between the two connecting plates 14. The first gear 15 is meshed with the toothed plate 6. The first fixing ring 2 is connected, and a gear ring 16 is rotatably installed inside the first fixing ring 2. The gear ring 16 is meshed with the first gear 15. The gear ring 16 is staggered with the gear plate 6 and the limit plate 12. A first motor 17 is fixedly installed on the front side of one of the fixing rods 3. A second gear 18 is fixedly installed on the output end of the first motor 17. The second gear 18 is meshed with the gear ring 16. By setting a centering mechanism, the first motor 17 is started to drive the second gear 18 to rotate. The gear ring 16 is rotated through the meshing connection between the second gear 18 and the gear ring 16. The meshing connection with the plurality of first gears 15 causes the first gears 15 to rotate. Through the meshing connection between the first gears 15 and the toothed plate 6, and the cooperation between the limiting groove 11 and the limiting plate 12, the toothed plate 6 drives the clamping block 7 to move toward the direction close to the central axis of the second fixing ring 4. Through the arc-shaped setting of the clamping block 7 and the cooperation of the clamping groove 13, the lens is clamped, and the center of the clamped lens is fixed at a point that is consistent with the height of the irradiating light tube 20 and the camera 10, thereby solving the problem of the need for the staff to manually adjust the height of the lens;

[0037] Reference Figure 1-4The detection mechanism includes a slide plate 8, a support frame 9 and a camera 10. The slide plate 8 is slidably mounted on the top of the bottom plate 1, the support frame 9 is fixedly mounted on the top of the slide plate 8, the camera 10 is fixedly mounted on the top of the support frame 9, a carrier frame 19 is fixedly mounted on the top of the bottom plate 1, and an irradiation light tube 20 is sleeved inside the carrier frame 19. Two fixed plates 21 are fixedly mounted on the top of the bottom plate 1, a screw rod 22 is rotatably mounted between the two fixed plates 21, and a limit rod 23 is fixedly mounted between the two fixed plates 21. The screw rod 22 and the limit rod 23 are both sleeved inside the slide plate 8, and the screw rod 22 and the slide plate 8 are threadedly connected, wherein A second motor 24 is fixedly installed on the left side of a fixed plate 21, and the output end of the second motor 24 is fixedly connected to the left side of the lead screw 22. By setting a detection mechanism, after the lens is clamped, the irradiation light tube 20 is started to make the light beam pass through the lens, and the second motor 24 is started to drive the lead screw 22 to rotate. Through the threaded connection between the lead screw 22 and the slide plate 8, and the cooperation of the limit rod 23, the slide plate 8 drives the camera 10 to move. In this process, the camera 10 is controlled to take pictures continuously, and the collected information is analyzed by a computer, thereby solving the problem that the staff needs to observe the light beam while moving the reference object.

[0038] Specifically, the working process or working principle of the focal length detection device for a photoelectric optical lens is as follows: when in use, the first motor 17 is started to drive the second gear 18 to rotate, and the ring gear 16 is rotated through the meshing connection between the second gear 18 and the ring gear 16, and the first gear 15 is rotated through the meshing connection between the ring gear 16 and multiple first gears 15, and the meshing connection between the first gear 15 gear and the toothed plate 6, and the cooperation between the limit groove 11 and the limit plate 12, so that the toothed plate 6 drives the clamping block 7 to move toward the direction close to the central axis of the second fixing ring 4, and the lens is clamped through the arc-shaped setting of the clamping block 7 and the cooperation of the clamping groove 13, and the irradiation light tube 20 is started to make the light beam pass through the lens, and the second motor 24 is started to drive the screw rod 22 to rotate, and through the threaded connection between the screw rod 22 and the slide plate 8, and the cooperation of the limit rod 23, the slide plate 8 drives the camera 10 to move.

[0039] It should be noted that the camera 10, the illumination light tube 20, the first motor 17 and the second motor 24 are devices or equipment existing in the prior art, or are devices or equipment that can be realized in the prior art. Their power supply, specific composition and principles are clear to those skilled in the art, so they are not described in detail.

Claims

1. A focal length detection device for a photoelectric optical lens, comprising a base plate (1), characterized in that: A centering mechanism, the centering mechanism comprising: A first fixing ring (2), the first fixing ring (2) being fixedly mounted on the top of the bottom plate (1); A fixing rod (3), the fixing rod (3) being fixedly mounted on the inner wall of the first fixing ring (2), and a plurality of the fixing rods (3) being provided; A second fixing ring (4), the second fixing ring (4) being fixedly mounted on the other end of the fixing rod (3); A slide groove (5), wherein the slide groove (5) is provided on the front side of the first fixing ring (2) and the second fixing ring (4); A tooth plate (6), wherein the tooth plate (6) is slidably mounted inside the slide groove (5); A clamping block (7), wherein the clamping block (7) is fixedly mounted on a side of the toothed plate (6) close to the central axis of the second fixing ring (4); A detection mechanism is arranged on the top of the base plate (1).

2. A focal length detection device for a photoelectric optical lens according to claim 1, characterized in that: The detection mechanism includes: A slide plate (8), the slide plate (8) being slidably mounted on the top of the base plate (1); A support frame (9), wherein the support frame (9) is fixedly mounted on the top of the slide plate (8); A camera (10) is fixedly mounted on the top of the support frame (9).

3. A focal length detection device for a photoelectric optical lens according to claim 2, characterized in that: A limiting groove (11) is provided on the rear side of the slide groove (5), a limiting plate (12) is slidably installed inside the limiting groove (11), the front side of the limiting plate (12) is fixedly connected to the rear side of the tooth plate (6), and a clamping groove (13) is provided on one side of the clamping block (7) close to the central axis of the second fixing ring (4).

4. A focal length detection device for a photoelectric optical lens according to claim 3, characterized in that: A connecting plate (14) is fixedly mounted on the front and rear sides of the first fixing ring (2); a first gear (15) is rotatably mounted between the two connecting plates (14); the first gear (15) is meshingly connected to the toothed plate (6); a gear ring (16) is rotatably mounted inside the first fixing ring (2); the gear ring (16) is meshingly connected to the first gear (15); the gear ring (16) is staggered with the toothed plate (6) and the limiting plate (12).

5. A focal length detection device for a photoelectric optical lens according to claim 4, characterized in that: A first motor (17) is fixedly mounted on the front side of one of the fixed rods (3); a second gear (18) is fixedly mounted on the output end of the first motor (17); and the second gear (18) is meshingly connected to the ring gear (16).

6. A focal length detection device for a photoelectric optical lens according to claim 5, characterized in that: A bearing frame (19) is fixedly mounted on the top of the base plate (1), an illumination light tube (20) is sleeved inside the bearing frame (19), and two fixing plates (21) are fixedly mounted on the top of the base plate (1).

7. A focal length detection device for a photoelectric optical lens according to claim 6, characterized in that: A screw rod (22) is rotatably mounted between the two fixing plates (21), a limiting rod (23) is fixedly mounted between the two fixing plates (21), the screw rod (22) and the limiting rod (23) are both sleeved inside the slide plate (8), and the screw rod (22) and the slide plate (8) are threadedly connected.

8. A focal length detection device for a photoelectric optical lens according to claim 7, characterized in that: A second motor (24) is fixedly mounted on the left side of one of the fixed plates (21), and an output end of the second motor (24) is fixedly connected to the left side of the screw rod (22).

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