Lens anti-laser performance detection device

Abstract

The utility model relates to optical detection technical field discloses a kind of lens laser resistance performance detection device. Device includes cabinet, pedestal, receiver, adjusting mechanism and laser transmitter, and receiver and laser transmitter constitute the light path of opposite emission. Workpiece positioning mechanism includes indexing wheel disc rotationally installed in pedestal, convex disc fixed in the rotation center stationary unmoved and multiple lens clamps installed around on indexing wheel disc. The driving pulley of lens clamp is abutted to the outer contour of convex disc, using the revolution motion when indexing wheel disc rotates, make pulley roll on the specific trajectory of convex disc, to drive clamping block to do mechanical type opening and closing movement. The utility model utilizes cam structure to realize multiple station automatic clamping, without complex follow-up power source, simple and reliable structure;With adjusting mechanism, the quick and accurate adjustment of laser source position is realized, and detection efficiency and equipment maintenance convenience are significantly improved.

Description

Technical Field

[0001] This utility model relates to the field of optical component testing equipment technology, and in particular to a device for testing the anti-laser performance of lenses. Background Technology

[0002] In the fields of laser processing, laser medicine, and precision optical instruments, optical lenses are core components, and their laser damage threshold (LIDT) is a key indicator for evaluating lens quality and lifespan. To ensure the stable operation of optical devices, lenses must undergo rigorous laser resistance testing before leaving the factory. This involves irradiating the lens with a laser beam of specific power density to detect damage phenomena such as cracking, melting, or decreased transmittance.

[0003] Currently, most laser resistance testing of lenses uses single-station manual or semi-automatic testing equipment. In practice, operators must manually place each lens onto the fixture on the testing platform, securing it with screws or manual clips, and then manually remove it after testing. This method is not only labor-intensive and inefficient, making it unsuitable for large-scale industrial production, but also exposes the lenses to fingerprints, oil, and other contaminants, affecting the accuracy of the test results.

[0004] However, existing automated equipment typically requires a separate pneumatic gripper or electric clamp at each station on the rotary table. This means that each clamp rotating with the rotary table needs a complex pneumatic or conductive slip ring for power transmission. This not only results in an extremely complex and bulky equipment structure, but also causes the sealing or contact reliability of the rotary joints to decrease significantly with increasing usage time, making it prone to clamping failures due to air leakage or poor contact. This increases the maintenance cost and downtime risk of the equipment. Therefore, a lens anti-laser performance testing device is proposed to solve the above problems. Utility Model Content

[0005] In view of the problems that existing automated lens inspection equipment often requires a separate power source and complex rotary transmission lines for each follow-up station when realizing continuous multi-station inspection, resulting in extremely complex equipment structure, high manufacturing cost, high failure rate and difficult maintenance over long-term operation, this utility model aims to provide a lens laser resistance performance inspection device with an improved structure that can effectively solve the above problems.

[0006] This utility model provides a lens anti-laser performance testing device, including: a main chassis and a device base fixed to the bottom of the main chassis, and a receiver is fixedly connected to the side wall of the main chassis;

[0007] An adjustment mechanism is installed on the upper surface of the device base, and a laser emitter is supported on the adjustment mechanism. The receiver and the laser emitter form an opposing optical path.

[0008] A workpiece positioning mechanism is located between the receiver and the adjustment mechanism. The workpiece positioning mechanism includes an indexing wheel and a rotary support assembly rotatably fitted to the equipment base. The rotary support assembly includes a rolling bearing inner shell fixedly connected to the equipment base, a rolling bearing outer shell rotatably sleeved outside the rolling bearing inner shell, and balls located between the rolling bearing inner shell and the rolling bearing outer shell. The indexing wheel is fixedly connected to the rolling bearing outer shell, and the outer periphery of the indexing wheel is provided with gear teeth.

[0009] The device base is characterized by having a drive source, the output end of which is connected to a transmission gear, which meshes with the gear teeth.

[0010] Preferably, the workpiece positioning mechanism further includes a plurality of lens clamps mounted around the upper surface of the indexing wheel, and a convex disc fixedly connected to the center of the inner housing of the rolling bearing by a fixing rod.

[0011] Preferably, the lens clamp includes a clamp base and a clamping block slidably fitted on the clamp base. The tail end of the clamping block is rotatably connected to a drive pulley. The rolling surface of the drive pulley abuts against the outer contour of the convex disk. As the indexing wheel rotates on the outside of the convex disk, the drive pulley rolls on the protruding part of the convex disk to drive the clamping block to perform opening and closing movements.

[0012] Preferably, the upper surface of the clamp base is provided with a guide groove, the clamping block is slidably engaged in the guide groove, and the side of the clamp base near the convex disc is also provided with a positioning groove, the clamping block cooperates with the positioning groove to clamp the lens.

[0013] Preferably, the lens clamp further includes a guide post and a return spring. One end of the guide post is fixedly connected to the clamping block, and the other end of the guide post passes through the side wall of the clamp base and is rotatably connected to the drive pulley. The return spring is sleeved on the guide post, and both ends of the return spring abut against the clamping block and the inner wall of the clamp base, respectively.

[0014] Preferably, the lens clamp is detachably fixed to the indexing wheel by a locking nut.

[0015] Preferably, the adjustment mechanism includes a guide rail beam extending along the laser emission direction and fixedly connected to the device base, and a connecting bracket slidably connected to the guide rail beam. The laser emitter is fixedly installed on the top of the connecting bracket, and a plurality of fixing holes are spaced apart on the upper surface of the guide rail beam along its length.

[0016] Preferably, the connecting bracket is further provided with a locking assembly, which includes an adjusting handle, a spring, and a locking fastener. The locking fastener is slidably inserted into the connecting bracket and can be inserted into the fixing hole.

[0017] Preferably, the adjusting handle is fixedly connected to the upper end of the locking fastener, and the spring abuts against the locking fastener and the connecting bracket to provide a downward preload.

[0018] Preferably, the main chassis has an inclined operating table, on which a control panel is embedded and installed. The control panel is electrically connected to the drive source, the receiver, and the laser emitter.

[0019] This utility model has the following beneficial effects:

[0020] 1. This utility model, by setting up a mechanical clamping opening and closing mechanism composed of an indexing wheel, a stationary convex disk, and a follower drive pulley, utilizes the rotation and revolution of the indexing wheel to make the drive pulley roll on a specific contour of the convex disk, directly converting the rotational motion into the linear opening and closing action of the clamping block. This solves the problems of low efficiency in existing technologies where lens inspection requires manual single-lens loading, and the complex structure and high cost caused by configuring a separate cylinder or motor for each clamp. It achieves the technical effect of simple and reliable structure, realizing multi-station automated loading, clamping, inspection, and unloading without additional power source, significantly improving inspection efficiency and reducing equipment maintenance costs.

[0021] 2. This utility model, by setting an adjustment mechanism including a guide beam, a connecting bracket, and a spring-loaded locking assembly, allows the operator to unlock and slide the laser emitter along the guide beam simply by lifting the adjustment handle. After releasing the handle, the locking fastener automatically inserts into the fixing hole under the action of the spring to complete the positioning. This solves the problems of cumbersome laser emission source position adjustment operation and easy slippage or inaccurate positioning caused by simply relying on screw locking in the prior art. It achieves the technical effect of being able to quickly and accurately adjust the test distance in stages, and the position is locked firmly after adjustment with high repeatability, thus adapting to the test requirements of different energy densities or different focal lengths.

[0022] 3. This utility model solves the problem of unstable clamping force or easy rigid damage to brittle lenses in the prior art by setting guide grooves, positioning grooves and clamping block structures with reset springs in the lens fixture. It automatically clamps the lens by spring force in the non-cam pushing state. It achieves flexible clamping, adapts to lenses of different thicknesses and ensures that the lens always stays in the center of the positioning groove during high-speed rotation and testing, thus improving the accuracy and consistency of the test data. Attached Figure Description

[0023] Figure 1 This is a three-dimensional schematic diagram of a lens anti-laser performance testing device proposed in this utility model;

[0024] Figure 2 This is a schematic diagram of the lens clamp of a lens anti-laser performance testing device proposed in this utility model;

[0025] Figure 3 This is a schematic diagram of the fixture base of a lens anti-laser performance testing device proposed in this utility model;

[0026] Figure 4 This is a schematic diagram of the connecting bracket of a lens anti-laser performance testing device proposed in this utility model.

[0027] Legend:

[0028] 1. Main chassis; 2. Equipment base; 3. Receiver; 4. Control panel; 5. Workpiece positioning mechanism; 51. Indexing wheel; 52. Lens clamp; 521. Clamp base; 522. Clamping block; 523. Positioning groove; 524. Guide column; 525. Return spring; 526. Guide groove; 527. Drive pulley; 528. Locking nut; 53. Convex disc; 54. Fixing rod; 55. Rolling bearing inner shell; 56. Ball bearing; 57. Rolling bearing outer shell; 58. Gear tooth; 6. Transmission gear; 7. Drive source; 8. Adjustment mechanism; 81. Laser emitter; 82. Guide rail beam; 83. Fixing hole; 84. Adjustment handle; 85. Spring; 86. Locking fastener; 87. Connecting bracket. Detailed Implementation

[0029] 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.

[0030] Example:

[0031] Reference Figures 1 to 4 This utility model provides a lens anti-laser performance testing device, which aims to solve the structural defects of the prior art, such as low automation level of lens testing, complex fixture drive structure and inconvenient laser source adjustment.

[0032] A lens anti-laser performance testing device includes a main chassis 1 and an equipment base 2 fixedly connected to the bottom of the main chassis 1 by bolts or welding. The main chassis 1 serves as the installation frame of the whole machine and provides support for the operation interface. The equipment base 2 is used to provide a stable load-bearing foundation. The main chassis 1 has an inclined operation table. A control panel 4 is embedded in the operation table. The control panel 4 is electrically connected to the electrical components mentioned later to achieve centralized control.

[0033] The side wall of the main chassis 1 is fixedly connected to a receiver 3 by screws. The receiver 3 is used to receive the laser signal after penetrating the lens or to detect the damage of the lens. An adjustment mechanism 8 is installed on the upper surface of the equipment base 2. The adjustment mechanism 8 carries a laser emitter 81. The laser emitter 81 is used to emit a high-energy detection laser beam. The receiver 3 and the laser emitter 81 form an opposing optical path in space to ensure that the laser optical axis can pass through the area of ​​the workpiece to be tested.

[0034] A workpiece positioning mechanism 5 is provided between the receiver 3 and the adjustment mechanism 8. The workpiece positioning mechanism 5 is rotatably mounted on the equipment base 2. The workpiece positioning mechanism 5 is used to carry the lens to be tested and to switch between the loading station, the testing station and the unloading station. The workpiece positioning mechanism 5 includes an indexing wheel 51 and a rotary support assembly located below the indexing wheel 51.

[0035] The slewing support assembly includes a rolling bearing inner shell 55 fixedly connected to the equipment base 2 by bolts, a rolling bearing outer shell 57 rotatably sleeved outside the rolling bearing inner shell 55, and balls 56 located between the rolling bearing inner shell 55 and the rolling bearing outer shell 57. The rolling bearing inner shell 55, as a stator component, remains stationary, while the rolling bearing outer shell 57, as a rotor component, rotates circumferentially around the rolling bearing inner shell 55. The balls 56 are used to reduce rotational friction resistance. The indexing wheel 51 is fixedly connected to the rolling bearing outer shell 57 and rotates synchronously with it.

[0036] The indexing wheel 51 has integrally formed or fixedly mounted gear teeth 58 on its outer circumference. A drive source 7 is mounted on the equipment base 2 via a motor mount. The drive source 7 is a servo motor or a stepper motor. A transmission gear 6 is keyed to the output shaft end of the drive source 7. The transmission gear 6 meshes with the gear teeth 58. The drive source 7 drives the transmission gear 6 to rotate, thereby causing the indexing wheel 51 to rotate intermittently or continuously around the vertical axis of the equipment base 2.

[0037] Multiple lens clamps 52 are mounted around the upper surface of the indexing wheel 51. The lens clamps 52 are used to clamp the lens to be tested. In order to achieve passive automatic opening and closing in conjunction with the lens clamps 52, the workpiece positioning mechanism 5 also includes a convex disk 53 located at the center of the indexing wheel 51. The convex disk 53 is fixedly connected to the center of the stationary rolling bearing inner housing 55 by a fixing rod 54. The outer contour of the convex disk 53 is designed as a cam curve with a specific lift change, which is used to provide radial driving force for the lens clamps 52 during the rotation of the indexing wheel 51.

[0038] The lens clamp 52 is detachably fixed to the upper surface of the indexing wheel 51 by a locking nut 528. The lens clamp 52 includes a clamp base 521 with a rectangular block structure. A guide groove 526 is radially formed on the upper surface of the clamp base 521. The guide groove 526 is used to provide a linear guide trajectory for the clamping action. At the same time, a positioning groove 523 is recessed or integrally formed on the end face of the clamp base 521 near the convex disk 53. The shape of the positioning groove 523 is adapted to the edge shape of the lens to be tested and is used to place and initially position the lens to be tested.

[0039] The lens clamp 52 also includes a clamping block 522 that is slidably fitted inside the guide groove 526. The clamping block 522 can reciprocate linearly in the radial direction within the guide groove 526. In order to drive the clamping block 522, a guide post 524 is fixedly connected to the tail end of the clamping block 522 (i.e. the end away from the positioning groove 523). The guide post 524 passes horizontally through the side wall of the clamp base 521 and extends to the outside of the clamp base 521. The guide post 524 and the through hole in the side wall of the clamp base 521 are in clearance fit to ensure smooth movement of the guide post 524.

[0040] A drive pulley 527 is rotatably connected to one end of the guide post 524 located outside the clamp base 521 via a pin. The drive pulley 527 can rotate freely around the pin. The rolling surface of the drive pulley 527 directly faces and abuts against the outer contour surface of the convex disc 53. At the same time, in order to maintain the clamping force, a return spring 525 is sleeved on the guide post 524. The return spring 525 is located inside the guide groove 526, and the two ends of the return spring 525 abut against the tail end face of the clamping block 522 and the inner wall of the clamp base 521, respectively. The return spring 525 is in a compressed or pre-tightened state, and always applies a thrust to the clamping block 522 in the direction of the positioning groove 523.

[0041] During the operation of the device, the inner housing 55 of the rolling bearing and the convex disk 53 connected thereto remain absolutely stationary, while the indexing wheel 51 drives the lens clamp 52 to revolve around the convex disk 53. When the drive pulley 527 moves to the protruding part of the convex disk 53, the protruding contour of the convex disk 53 overcomes the elastic force of the return spring 525 and pushes the drive pulley 527 radially outward. The drive pulley 527 drives the guide post 524 and the clamping block 522 to slide along the guide groove 526 away from the positioning groove 523, thereby opening the clamp to facilitate the insertion or removal of the lens.

[0042] As the indexing wheel 51 continues to rotate, driving the drive pulley 527 past the protruding part and into the base circle or lower section of the convex disk 53, the pushing force of the convex disk 53 on the drive pulley 527 disappears. At this time, the return spring 525 releases its elastic potential energy, pushing the clamping block 522 to move back towards the positioning groove 523, thereby firmly clamping and fixing the lens placed in the positioning groove 523. This design, which uses a cam curve to control the opening and closing of the fixture, ensures high stability and anti-centrifugal deflection capability of the lens clamping during high-speed rotation detection, and also realizes synchronous and asynchronous action control of multiple stations.

[0043] In a preferred embodiment, the adjustment mechanism 8 includes a guide beam 82 extending horizontally along the laser emission direction and bolted to the upper surface of the equipment base 2. The guide beam 82 has a dovetail or T-shaped cross-section to provide linear guidance for the moving parts. In conjunction with the guide beam 82, the adjustment mechanism 8 also includes a connecting bracket 87 slidably connected to the guide beam 82. The bottom of the connecting bracket 87 has a groove that matches the cross-sectional shape of the guide beam 82, allowing the connecting bracket 87 to move smoothly and without gaps along the length of the guide beam 82. The top of the 87 is provided with a mounting plane or flange interface. The laser emitter 81 is firmly fixed to the top of the connecting bracket 87 by screws, so that the laser emitter 81 moves synchronously with the connecting bracket 87. The upper surface of the guide beam 82 is provided with multiple fixing holes 83 at equal intervals along its length. The fixing holes 83 are blind holes or through holes, and their diameter accuracy is matched with the locking fasteners mentioned later. At the same time, the connecting bracket 87 is also equipped with a locking assembly that is easy to operate. The locking assembly includes an adjusting handle 84, a spring 85, and a pin-shaped locking fastener 86.

[0044] In a preferred embodiment, the locking fastener 86 is vertically slidably installed in the internal channel of the connecting bracket 87, and its lower end can be adapted to be inserted into any fixing hole 83 to lock the position. The adjusting handle 84 is fixedly connected to the top end of the locking fastener 86 that protrudes above the connecting bracket 87, and is used for the operator to hold and pull. The spring 85 is coaxially sleeved on the locking fastener 86, and the top end of the spring 85 abuts against the lower surface of the adjusting handle 84, and the bottom end abuts against the upper surface of the connecting bracket 87. The spring 85 is always in a compressed state, providing a downward preload to force the locking fastener 86 to be inserted into the fixing hole 83, thereby automatically maintaining the lock in the non-operational state.

[0045] The implementation principle of this application embodiment is as follows: The lens anti-laser performance testing device consists of a main chassis 1, an equipment base 2, a receiver 3 and a control panel 4 installed on the main chassis 1. Under the action of the control panel 4, the lens placed on the workpiece positioning mechanism 5 is irradiated onto the receiver 3 through the adjustment mechanism 8, thereby realizing the test of the lens anti-laser performance.

[0046] First, the operator turns on the control panel 4. The workpiece positioning mechanism 5 rotates under the action of the transmission gear 6 and the drive source 7. At the same time, the convex disk 53 on the station mechanism contacts the drive pulley 527 on the lens clamp 52, thereby realizing the opening and closing of the lens clamp 52. At this time, the operator can place or pick up multiple lenses onto the lens clamp 52, which is fixed to the workpiece positioning mechanism 5 by the locking nut 528. After the corresponding process is completed, the turntable rotates again to switch to the next station, thereby realizing the continuous and automated process flow of multiple workpieces.

[0047] At this time, the wheel, which consists of the inner housing 55 of the rolling bearing, the ball bearing 56, and the outer housing 57 of the rolling bearing connected to the indexing wheel 51, rotates under the drive of the drive device 7 driven by the gear teeth 58 and the transmission gear 6. The convex disk 53 connected to the inner housing 55 is fixed by the fixing rod 54, which opens the lens clamp 52 that contacts the convex part of the convex disk 53, making it convenient for the operator to place or pick up the lens.

[0048] Meanwhile, when the convex disk 53 contacts the drive pulley 527 on the lens clamp 52, the drive pulley 527 rolls on the protrusion on the convex disk 53, driving the guide column 524 to move. At the same time, the clamping block 522 placed on the clamp base 521 opens under the action of the guide groove 526. Then, when the movement of the drive pulley 527 on the convex disk 53 ends, the guide column 524 drives the clamping block 522 to clamp the lens placed on the positioning groove 523 under the action of the return spring 525.

[0049] Finally, the operator adjusts the operating handle 84 to position the laser emitter 81, which is placed on the guide beam 82, onto the desired fixing hole 83. When the operator lifts the adjusting handle 84, the locking fastener 86 connected to the bottom will also be lifted, and the sliding connecting bracket 87 will be moved to the appropriate fixing hole 83. The adjusting handle 84 will be lowered, and the locking fastener 86 will move down into the fixing hole 83 for positioning under the action of the spring 85.

[0050] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the laser resistance performance of a lens, comprising: The main chassis (1) and the equipment base (2) fixed to the bottom of the main chassis (1) are provided with a receiver (3) fixedly connected to the side wall of the main chassis (1). An adjustment mechanism (8) is installed on the upper surface of the equipment base (2), and a laser emitter (81) is carried on the adjustment mechanism (8). The receiver (3) and the laser emitter (81) form an opposing optical path. The workpiece positioning mechanism (5) is located between the receiver (3) and the adjustment mechanism (8). The workpiece positioning mechanism (5) includes an indexing wheel (51) and a rotary support assembly rotatably fitted to the equipment base (2). The rotary support assembly includes a rolling bearing inner shell (55) fixedly connected to the equipment base (2), a rolling bearing outer shell (57) rotatably sleeved outside the rolling bearing inner shell (55), and a ball (56) located between the rolling bearing inner shell (55) and the rolling bearing outer shell (57). The indexing wheel (51) is fixedly connected to the rolling bearing outer shell (57), and the outer periphery of the indexing wheel (51) is provided with gear teeth (58). The device base (2) is characterized in that a drive source (7) is provided on the device base (2), and a transmission gear (6) is connected to the output end of the drive source (7), and the transmission gear (6) meshes with the gear teeth (58).

2. The lens anti-laser performance testing device according to claim 1, characterized in that, The workpiece positioning mechanism (5) also includes a plurality of lens clamps (52) mounted around the upper surface of the indexing wheel (51), and a convex disc (53) fixedly connected to the center of the rolling bearing inner shell (55) by a fixing rod (54).

3. The lens anti-laser performance testing device according to claim 2, characterized in that, The lens clamp (52) includes a clamp base (521) and a clamping block (522) slidably fitted on the clamp base (521). The tail end of the clamping block (522) is rotatably connected to a drive pulley (527). The rolling surface of the drive pulley (527) abuts against the outer contour of the convex disk (53). As the indexing wheel (51) rotates outside the convex disk (53), the drive pulley (527) rolls on the protruding part of the convex disk (53) to drive the clamping block (522) to perform opening and closing movements.

4. The lens anti-laser performance testing device according to claim 3, characterized in that, The upper surface of the clamp base (521) is provided with a guide groove (526), ​​and the clamping block (522) is slidably engaged in the guide groove (526). The clamp base (521) is also provided with a positioning groove (523) on the side near the convex disk (53). The clamping block (522) cooperates with the positioning groove (523) to clamp the lens.

5. The lens anti-laser performance testing device according to claim 4, characterized in that, The lens clamp (52) also includes a guide post (524) and a return spring (525). One end of the guide post (524) is fixedly connected to the clamping block (522), and the other end of the guide post (524) passes through the side wall of the clamp base (521) and is rotatably connected to the drive pulley (527). The return spring (525) is sleeved on the guide post (524), and the two ends of the return spring (525) abut against the clamping block (522) and the inner wall of the clamp base (521), respectively.

6. The lens anti-laser performance testing device according to claim 2, characterized in that, The lens clamp (52) is detachably fixed to the indexing wheel (51) by a locking nut (528).

7. The lens anti-laser performance testing device according to claim 1, characterized in that, The adjustment mechanism (8) includes a guide beam (82) extending along the laser emission direction and fixedly connected to the equipment base (2), and a connecting bracket (87) slidably connected to the guide beam (82). The laser emitter (81) is fixedly installed on the top of the connecting bracket (87). The upper surface of the guide beam (82) is provided with a plurality of fixing holes (83) spaced apart along its length.

8. The lens anti-laser performance testing device according to claim 7, characterized in that, The connecting bracket (87) is also provided with a locking component, which includes an adjusting handle (84), a spring (85) and a locking fastener (86). The locking fastener (86) slides through the connecting bracket (87) and can be inserted into the fixing hole (83).

9. The lens anti-laser performance testing device according to claim 8, characterized in that, The adjusting handle (84) is fixedly connected to the upper end of the locking fastener (86), and the spring (85) abuts against the locking fastener (86) and the connecting bracket (87) to provide a downward preload.

10. The lens anti-laser performance testing device according to claim 1, characterized in that, The main chassis (1) has an inclined operating table, on which a control panel (4) is embedded and installed. The control panel (4) is electrically connected to the drive source (7), the receiver (3) and the laser emitter (81).

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