A lens support mechanism for holding a lens of a lens device under test

Abstract

This utility model discloses a lens support mechanism for fixing a lens under test, relating to the field of lens testing technology. It includes a limiting plate, a rotating plate, and a housing arranged coaxially from top to bottom in a vertical direction. The rotating plate rotates horizontally at the top of the housing. The limiting plate has multiple limiting channels arranged in a circular array along its axial direction and extending vertically through it. The rotating plate has multiple sliding grooves arranged in a circular array along its axial direction on one side wall near the limiting plate. In this utility model, the limiting plate and rotating plate enable synchronous centripetal and centrifugal movements of multiple limiting posts, automatically adjusting the clamping position according to the shape and size of the lens. This adapts to most lenses of different shapes and sizes, expanding its application range. Furthermore, in conjunction with a compression spring, pressure plate, and slider, appropriate buffering force is provided during clamping, further preventing damage to the lens edge due to excessive clamping force and ensuring the integrity and quality of the lens.

Description

Technical Field

[0001] This utility model relates to the field of lens testing technology, specifically to a lens support mechanism for fixing a lens to be tested. Background Technology

[0002] Lens inspection is a crucial step in the optical manufacturing industry, aiming to ensure that the quality and performance of lenses meet relevant standards and requirements. The inspection covers multiple aspects, such as the surface quality of the lens, including the presence of scratches, blemishes, bubbles, and other defects; the accuracy of the lens's geometric dimensions, such as diameter and radius of curvature; and the optical performance of the lens, such as refractive index, dispersion coefficient, and light transmittance. Only lenses that have undergone rigorous testing can be put into use to ensure that they perform well in various optical devices such as eyeglasses, camera lenses, and microscopes.

[0003] The clamping device used in the existing lens inspection process has a fixed structure. Different clamping molds or equipment need to be replaced for different lens specifications, which cannot meet the diverse lens inspection needs. Moreover, during the inspection process, because the clamping device has a fixed structure, it is necessary to manually release the clamp, adjust the position and angle of the lens, and then lock it again, which is cumbersome and inconvenient.

[0004] In view of the above, this application is hereby submitted. Utility Model Content

[0005] The purpose of this invention is to provide a lens support mechanism for fixing a lens under test, so as to solve the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the lens support mechanism of the fixed lens device provided by this utility model includes a limiting plate, a rotating plate and a housing arranged coaxially from top to bottom in the vertical direction. The rotating plate rotates horizontally on the top of the housing. The top of the limiting plate is provided with a plurality of limiting channels that are arranged in a ring array about its axis and penetrate vertically. The side wall of the rotating plate near the limiting plate is provided with a plurality of sliding grooves that are arranged in a ring array about its axis.

[0007] The multiple limiting channels correspond one-to-one with the multiple sliding grooves, and the corresponding limiting channels and sliding grooves are slidably provided with the same limiting post. A slider is fixed at one end of the limiting post in the sliding groove. The slider slides in the sliding groove. A horizontal compression spring is fixed on the side wall of the slider near the axis of the rotating plate. A vertical pressure plate is fixed at the end of the compression spring away from the slider. The pressure plate slides in cooperation with the sliding groove.

[0008] Furthermore, the length direction of the limiting channel is consistent with the radial direction of the limiting plate, the horizontal cross section of the slide groove is arc-shaped, one end of which is set towards the axis of the rotating plate and the other end is bent towards the edge of the rotating plate, and the horizontal extension line of the slide groove near the outer edge of the rotating plate is tangent to the edge of the rotating plate. The extension direction of the compression spring is consistent with the extension direction of the slide groove. The top of the limiting post penetrates the limiting channel to the top of the limiting plate. The outer surface of the limiting post is covered with a protective sleeve of flexible material. The opening width at the top of the slide groove is smaller than the distance between the two horizontally opposite inner side walls inside.

[0009] Furthermore, the housing is provided with a driving mechanism, which includes a motor fixed at the center of the inner wall of the bottom of the housing. The output end of the motor is coaxial with the rotating plate. A drive shaft is fixed at the output end of the motor. The end of the drive shaft away from the motor rotates through the housing and the rotating plate and is connected to the limiting plate. A spline sleeve is coaxially fixed on the outer arc wall of the drive shaft connected to the output end of the motor. A turntable is coaxially slidably fitted on the outside of the spline sleeve. A limiting plate is coaxially fixed at the center of the side wall of the rotating plate near the turntable. A plurality of vertically arranged connecting posts are fixed on the outer edge of the side wall of the turntable near the limiting plate, arranged in a circular array about its axis. A plurality of slots are opened on the side wall of the limiting plate near the turntable, arranged in a circular array about its axis. The plurality of connecting posts and the plurality of slots correspond one-to-one and are mutually plugged and adapted.

[0010] Furthermore, a limiting clamp is slidably sleeved on the horizontal side of the turntable, and an electric push rod is fixed at the bottom of the limiting clamp. The electric push rod is fixed on the inner wall of the bottom of the housing. The vertical cross section of the limiting clamp along the radial direction of the turntable is "door" shaped and the notch of the limiting clamp faces the turntable. A ball is embedded in the notch of the limiting clamp.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. Through the limiting plate and rotating plate, the synchronous centripetal and centrifugal movements of multiple limiting posts are realized. The clamping position can be automatically adjusted according to the shape and size of the lens, which can adapt to most different shapes and sizes of lenses, thus expanding its application range. At the same time, in conjunction with the compression spring, pressure plate and slider, appropriate buffering force can be provided during the clamping process, further avoiding damage to the lens edge due to excessive clamping force, and ensuring the integrity and quality of the lens.

[0013] 2. The drive mechanism allows for quick and convenient control of lens positioning and contact, and can also rotate the lens, facilitating lens inspection operations for inspectors. It eliminates the need for frequent manual adjustments and re-fixing of the lens position, thus improving inspection efficiency. Attached Figure Description

[0014] Figure 1 A schematic diagram of the overall structure of the lens support mechanism for fixing the lens under test;

[0015] Figure 2 An exploded view of a portion of the lens support mechanism for fixing the lens under test;

[0016] Figure 3 A schematic diagram showing the connection relationship between the drive mechanism and the rotating plate in the lens support mechanism of the device for fixing the lens under test;

[0017] Figure 4 for Figure 3 Enlarged view of the structure at point A in the middle.

[0018] In the picture:

[0019] 10. Limiting plate; 101. Limiting channel; 11. Rotating plate; 111. Slide groove; 12. Housing;

[0020] 13. Limiting post; 14. Slider; 15. Compression spring; 16. Pressure plate;

[0021] 20. Motor; 21. Spline sleeve; 22. Turntable; 23. Connecting post; 24. Limiting plate;

[0022] 25. Electric push rod; 26. Limit clamp. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see the appendix Figure 1 To be continued Figure 4 The lens support mechanism of the fixed lens device provided by this utility model includes a limiting plate 10, a rotating plate 11 and a housing 12 arranged coaxially from top to bottom in the vertical direction. The rotating plate 11 rotates horizontally on the top of the housing 12. The top of the limiting plate 10 is provided with a plurality of limiting channels 101 arranged in a ring array about its axis and vertically penetrating. The side wall of the rotating plate 11 near the limiting plate 10 is provided with a plurality of sliding grooves 111 arranged in a ring array about its axis.

[0025] The multiple limiting channels 101 correspond one-to-one with the multiple sliding grooves 111, and the corresponding limiting channel 101 and sliding groove 111 are slidably provided with the same limiting post 13. The end of the limiting post 13 located in the sliding groove 111 is fixed with a slider 14. The slider 14 slides in the sliding groove 111. A horizontal compression spring 15 is fixed on the side wall of the slider 14 near the axis of the rotating plate 11. A vertical pressure plate 16 is fixed on the end of the compression spring 15 away from the slider 14. The pressure plate 16 slides in cooperation with the sliding groove 111.

[0026] The length direction of the limiting channel 101 is consistent with the radial direction of the limiting plate 10. The horizontal cross section of the slide groove 111 is arc-shaped, with one end facing the axis of the rotating plate 11 and the other end bent towards the edge of the rotating plate 11. The horizontal extension line of the slide groove 111 near the outer edge of the rotating plate 11 is tangent to the edge of the rotating plate 11.

[0027] The extension direction of the compression spring 15 is consistent with the extension direction of the slide groove 111. The top of the limiting post 13 passes through the limiting channel 101 and is set above the limiting plate 10. The outer surface of the limiting post 13 is covered with a protective sleeve of flexible material. The top opening width of the slide groove 111 is smaller than the distance between its two horizontally opposite inner side walls. The housing 12 is provided with a driving mechanism. The driving mechanism includes a motor 20 fixed at the center of the bottom inner wall of the housing 12. The output end of the motor 20 is coaxial with the rotating plate 11. The output end of the motor 20 is fixed with a drive shaft. The end of the drive shaft away from the motor 20 rotates through the housing 12 and the rotating plate 11 in sequence and is connected to the limiting plate 10.

[0028] It should be noted that: by rotating the limiting plate 10 in conjunction with the rotating plate 11, multiple limiting posts 13 are forced to make synchronous centripetal or centrifugal movements within the guide and limiting slide groove 111 of the limiting channel 101. During the centripetal movement, the multiple limiting posts 13 gradually approach each other, thereby clamping the lens placed in the middle. At the same time, the compression spring 15 and the pressure plate 16 provided on the slider 14 play an elastic buffering role. When the limiting post 13 contacts the lens and applies clamping force, the compression spring 15 will be compressed to absorb excessive force, avoiding excessive clamping force and damage to the edge of the lens.

[0029] Please see the appendix Figure 1 To be continued Figure 4 The present invention provides a technical solution: a spline sleeve 21 is coaxially fixed on the outer arc wall of the drive shaft connected to the output end of the motor 20. A turntable 22 is coaxially slidably sleeved on the outer side of the spline sleeve 21. A limiting disk 24 is coaxially fixed at the center of one side wall of the rotating plate 11 near the turntable 22. A plurality of vertically arranged connecting posts 23 are fixed on the outer edge of one side wall of the turntable 22 near the limiting disk 24. A plurality of slots are opened on one side wall of the limiting disk 24 near the turntable 22, and the plurality of connecting posts 23 correspond one-to-one with the plurality of slots and are mutually plugged and adapted.

[0030] A limiting clamp 26 is slidably sleeved on one side of the turntable 22. An electric push rod 25 is fixed at the bottom of the limiting clamp 26. The electric push rod 25 is fixed on the inner wall of the bottom of the housing 12. The vertical cross section of the limiting clamp 26 along the radial direction of the turntable 22 is "door" shaped and the notch of the limiting clamp 26 is set facing the turntable 22. A ball is embedded in the notch of the limiting clamp 26.

[0031] It should be noted that: the inner walls of the limit clamps 26 that are close to each other are fitted with balls, and the turntable 22 rolls against the balls. The balls are used to reduce the friction between the turntable 22 and the inner wall of the limit clamps 26 when the limit clamps 26 move along the spline sleeve 21.

[0032] With the cooperation of turntable 22 and spline sleeve 21, turntable 22 can not only slide freely along the axial direction of spline sleeve 21, but motor 20 can also transmit its own torque to turntable 22 through spline sleeve 21. When connecting post 23 is not inserted into the limiting groove on limiting plate 24, motor 20 directly drives limiting plate 10 to rotate, thereby triggering lens clamping.

[0033] When the electric push rod 25 pushes the limit clamp 26 to drive the turntable 22 to move along the drive shaft axis, the turntable 22 drives the connecting post 23 to move toward the limit plate 24. The slot on the side wall of the limit plate 24 near the turntable 22 is arc-shaped, and the depth of the inner side wall of the slot away from the turntable 22 gradually decreases and smoothly transitions along the working rotation direction, which makes it easier for the connecting post 23 to be inserted into the slot in the rotating state.

[0034] When the connecting post 23 is inserted into the slot, the limiting plate 24 and the turntable 22 are linked through the connecting post 23. At this time, the limiting plate 24 will receive the torque transmitted from the turntable 22. Thus, the limiting plate 24 will rotate synchronously with the turntable 22. Since the limiting plate 24 drives the rotating plate 11 to rotate, the limiting plate 10 and the rotating plate 11 rotate synchronously, thereby driving the lens to rotate as a whole, which is convenient for the operator to inspect.

[0035] Working principle:

[0036] The output shaft of motor 20 drives spline sleeve 21 to rotate. Initially, the connecting post 23 is not inserted into the slot of limit plate 24. Motor 20 directly drives limit plate 10 to rotate. Rotating plate 11 cooperates to make multiple limit posts 13 move centripetally in limit channel 101 and slide groove 111 to clamp the lens. Compression spring 15 and pressure plate 16 buffer to avoid damaging the lens.

[0037] The electric push rod 25 pushes the limit clamp 26 to drive the turntable 22 to move along the drive shaft axis. The ball bearings in the limit clamp 26 reduce friction. The connecting column 23 is inserted into the arc-shaped slot of the limit plate 24. The turntable 22 and the limit plate 24 are linked. The limit plate 24 drives the rotating plate 11, so that the limit plate 10 and the rotating plate 11 rotate synchronously, thereby driving the lens to rotate as a whole, which facilitates the inspection.

Claims

1. A lens support mechanism for fixing a lens under test, comprising a limiting plate (10), a rotating plate (11), and a housing (12) arranged coaxially from top to bottom in a vertical direction, wherein the rotating plate (11) rotates horizontally at the top of the housing (12), characterized in that: The top of the limiting plate (10) has multiple limiting channels (101) arranged in a ring array along its axis and extending vertically through it. The side wall of the rotating plate (11) near the limiting plate (10) has multiple grooves (111) arranged in a ring array along its axis. The multiple limiting channels (101) correspond one-to-one with the multiple sliding grooves (111), and the corresponding limiting channels (101) and sliding grooves (111) are slidably provided with the same limiting post (13). The end of the limiting post (13) located in the sliding groove (111) is fixed with a slider (14). The slider (14) slides in the sliding groove (111). A horizontal compression spring (15) is fixed on the side wall of the slider (14) near the axis of the rotating plate (11). A vertical pressure plate (16) is fixed on the end of the compression spring (15) away from the slider (14). The pressure plate (16) slides in cooperation with the sliding groove (111).

2. The lens support mechanism of the device for fixing the lens under test as described in claim 1, characterized in that: The length direction of the limiting channel (101) is consistent with the radial direction of the limiting plate (10). The horizontal cross section of the slide groove (111) is arc-shaped, with one end facing the axis of the rotating plate (11) and the other end bent towards the edge of the rotating plate (11). The horizontal extension line of the slide groove (111) near the outer edge of the rotating plate (11) is tangent to the edge of the rotating plate (11).

3. The lens support mechanism of the device for fixing the lens under test as described in claim 1, characterized in that: The extension direction of the compression spring (15) is consistent with the extension direction of the slide groove (111). The top of the limiting post (13) extends through the limiting channel (101) to the top of the limiting plate (10). The outer surface of the limiting post (13) is covered with a protective sleeve made of flexible material. The opening width at the top of the slide groove (111) is smaller than the distance between the two horizontally opposite inner side walls inside.

4. The lens support mechanism of the device for fixing the lens under test as described in claim 1, characterized in that: The housing (12) is provided with a driving mechanism, which includes a motor (20) fixed at the center of the bottom inner wall of the housing (12). The output end of the motor (20) is coaxial with the rotating plate (11). The output end of the motor (20) is fixed with a driving shaft. The end of the driving shaft away from the motor (20) rotates through the housing (12) and the rotating plate (11) in sequence and is connected to the limiting plate (10).

5. The lens support mechanism of the device for fixing the lens under test as described in claim 4, characterized in that: A spline sleeve (21) is coaxially fixed on the outer arc wall of the drive shaft connected to the output end of the motor (20). A turntable (22) is coaxially slidably sleeved on the outer side of the spline sleeve (21). A limit plate (24) is coaxially fixed at the center of one side wall of the rotating plate (11) near the turntable (22).

6. The lens support mechanism of the device for fixing the lens under test as described in claim 5, characterized in that: The turntable (22) has a number of vertically arranged connecting posts (23) arranged in a ring array about its axis on the outer edge of one side wall near the limiting plate (24). The limiting plate (24) has a number of slots arranged in a ring array about its axis on one side wall near the turntable (22). The number of connecting posts (23) corresponds to the number of slots and they are mutually plugged and adapted.

7. The lens support mechanism of the device for fixing the lens under test as described in claim 5, characterized in that: The turntable (22) is slidably fitted with a limiting clamp (26) on one side. An electric push rod (25) is fixed at the bottom of the limiting clamp (26). The electric push rod (25) is fixed on the inner wall of the bottom of the housing (12). The vertical cross section of the limiting clamp (26) along the radial direction of the turntable (22) is "door" shaped and the notch of the limiting clamp (26) is set facing the turntable (22).

8. The lens support mechanism of the device for fixing the lens under test as described in claim 7, characterized in that: The notch on the limiting clamp (26) is fitted with a ball bearing.

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