An optical element defect detection device

Abstract

The utility model discloses a kind of optical element defect detection devices, belong to optical element detection technical field, including including rotating platform, and the annular distribution of cleaning unit around rotating platform, at least one lower light detection unit and at least one upper light detection unit, wherein: rotating platform, annularly equipped with several ladder holes for placing optical element;Lower light detection unit and upper light detection unit are mutually inverted, and all include third adjusting seat, second camera, integrating sphere light source, second annular light source and area light source, second camera, integrating sphere light source, second annular light source and area light source are sequentially distributed along the optical axis direction of second camera and can be respectively moved in horizontal direction and vertical direction, optical element is located between integrating sphere light source and second annular light source.Can realize the multilayer, multi-angle detection of optical element, and the degree of integration is high, and detection precision, detection efficiency and space utilization are high.

Description

Technical Field

[0001] This utility model belongs to the field of optical component testing technology, and specifically relates to an optical component defect detection device. Background Technology

[0002] Existing methods for judging the appearance defects (such as scratches, bubbles, impurities, etc.) of optical components (such as lenses) generally involve manually placing the entire tray of lenses under a microscope for observation and flipping them over, recording the defect type and level of each lens. This method is time-consuming, labor-intensive, inefficient, and costly. Its accuracy also depends on human experience, making it difficult to guarantee the stability and accuracy of the inspection. Alternatively, a linear conveyor structure can be used, resulting in dispersed inspection stations, large equipment footprint, and long cycle time, which is not conducive to improving inspection efficiency and space utilization. Utility Model Content

[0003] The purpose of this invention is to address the above-mentioned problems by proposing an optical component defect detection device that can realize multi-level and multi-angle detection of optical components, with high integration, detection accuracy, detection efficiency and space utilization.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] This utility model proposes an optical component defect detection device, comprising a rotating platform, cleaning units circumferentially distributed around the rotating platform, at least one downward illumination detection unit, and at least one upward illumination detection unit, wherein:

[0006] The rotating platform has several stepped holes around its circumference for placing optical components;

[0007] The lower illumination detection unit and the upper illumination detection unit are inverted relative to each other, and each includes a third adjustment seat, a second camera, an integrating sphere light source, a second ring light source, and a surface light source. The second camera, the integrating sphere light source, the second ring light source, and the surface light source are distributed sequentially along the optical axis of the second camera and can move in the horizontal and vertical directions respectively. The optical element is located between the integrating sphere light source and the second ring light source.

[0008] Preferably, both the lower lighting detection unit and the upper lighting detection unit further include a first three-axis moving unit, a third two-axis moving unit, and a fourth two-axis moving unit. The first three-axis moving unit is connected to the third adjustment base and is used to drive the second camera to move horizontally and vertically. The third two-axis moving unit is connected to the third adjustment base and is used to drive the integrating sphere light source to move horizontally and vertically. The fourth two-axis moving unit is connected to the third adjustment base and is used to drive the second ring light source and the surface light source to move horizontally and vertically. The surface light source can move vertically relative to the second ring light source.

[0009] Preferably, the optical component defect detection device further includes at least one upward-sloping lighting detection unit. Each upward-sloping lighting detection unit is circumferentially distributed around the rotating platform and includes a second adjusting seat, a first dual-axis moving unit, a first mounting seat, a second mounting seat, a first camera, a second dual-axis moving unit, a third mounting seat, a fourth mounting seat, and a first ring light source. The first mounting seat has a first through hole, a first arc-shaped hole, and several first oblong holes, and is connected to the first dual-axis moving unit by screws passing through the first oblong holes. The first dual-axis moving unit is connected to the second adjusting seat and is used to drive the first mounting seat to move horizontally and vertically. The adjustment direction of the first oblong holes is perpendicular to the driving direction of the first dual-axis moving unit. The second mounting seat is connected to the second adjusting seat by screws passing through the first oblong holes. The screws of the through hole and the first arc-shaped hole are connected to the first mounting base. The first camera is connected to the second mounting base and the optical axis of the first camera is coaxial with the first ring light source. The third mounting base has a second through hole, a second arc-shaped hole and several second waist-shaped holes, and is connected to the second dual-axis moving unit through the screws passing through the second waist-shaped holes. The second dual-axis moving unit is connected to the second adjusting base and is used to drive the third mounting base to move horizontally and vertically. The adjusting direction of the second waist-shaped holes is perpendicular to the driving direction of the second dual-axis moving unit. The fourth mounting base is connected to the third mounting base through the screws passing through the second through hole and the second arc-shaped hole. The first ring light source is connected to the fourth mounting base and is tilted. The first camera and the first ring light source are both located above the rotating platform.

[0010] Preferably, the optical element defect detection device further includes a fixed-plate oblique lighting detection unit corresponding to the upward oblique lighting detection unit. The fixed-plate oblique lighting detection unit includes a fourth adjustment seat, a fifth dual-axis moving unit, a fifth mounting seat, a sixth mounting seat, and a third camera. The fifth mounting seat has a third through hole, a third arc-shaped hole, and several third oblong holes, and is connected to the fifth dual-axis moving unit through screws passing through the third oblong holes. The fifth dual-axis moving unit is connected to the fourth adjustment seat and is used to drive the fifth mounting seat to move horizontally and vertically. The adjustment direction of the third oblong holes is perpendicular to the driving direction of the fifth dual-axis moving unit. The sixth mounting seat is connected to the fifth mounting seat through screws passing through the third through hole and the third arc-shaped hole. The third camera is connected to the sixth mounting seat and is located above the rotating platform. The optical axis of the third camera intersects the optical axis of the corresponding first camera on the same optical element.

[0011] Preferably, the optical element defect detection device further includes at least one coaxial light illumination detection unit. Each coaxial light illumination detection unit is circumferentially distributed around the rotating platform and includes a fifth adjustment seat, a sixth dual-axis moving unit, a coaxial light source, a second and third-axis moving unit, and a fourth camera. The sixth dual-axis moving unit is connected to the fifth adjustment seat and is used to drive the coaxial light source to move horizontally and vertically. The second and third-axis moving unit is connected to the fifth adjustment seat and is used to drive the fourth camera to move horizontally and vertically. The optical element is located between the coaxial light source and the fourth camera, and the fourth camera is located below the rotating platform.

[0012] Preferably, there are three oblique lighting detection units, three downward lighting detection units, three upward lighting detection units, and three fixed-plate oblique lighting detection units, and two coaxial lighting detection units. The optical element defect detection device is distributed as follows: along the rotation direction on the periphery of the rotating platform, the following units are arranged in sequence: cleaning unit, oblique lighting detection unit, downward lighting detection unit, oblique lighting detection unit, upward lighting detection unit, downward lighting detection unit, upward lighting detection unit, coaxial lighting detection unit, downward lighting detection unit, coaxial lighting detection unit, upward lighting detection unit, and oblique lighting detection unit. Each fixed-plate oblique lighting detection unit is circumferentially distributed in the middle of the rotating platform and is relatively stationary with respect to the corresponding oblique lighting detection unit.

[0013] Preferably, the optical component defect detection device further includes an optical fiber sensor for detecting optical components, the optical fiber sensor being located on the loading side of the cleaning unit.

[0014] Preferably, the rotating platform includes a turntable, a motor, and a fixed column arranged coaxially. The motor is connected to the fixed column and is used to drive the turntable to rotate. A stepped hole is provided on the turntable.

[0015] Preferably, the cleaning unit includes a first adjusting seat and an ion fan. The ion fan is connected to the first adjusting seat and has a clearance groove. When the optical element rotates to the cleaning station, it is built into the clearance groove.

[0016] Preferably, each adjusting seat has several horizontally arranged fourth oblong holes and several vertically arranged fifth oblong holes.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] The device includes a cleaning unit, at least one upward-sloping lighting detection unit, at least one downward-sloping lighting detection unit, at least one upward-sloping lighting detection unit, at least one fixed-plate oblique lighting detection unit, and at least one coaxial lighting detection unit, all integrated with a rotating platform. It can perform turntable-type transmission operations, reducing manual intervention and avoiding secondary contamination of optical components. It can also achieve multi-layer and multi-angle detection of optical components through multiple detection units, with high integration, detection accuracy, detection efficiency, and space utilization. Specifically, by using a downlighting detection unit and an uplighting detection unit that integrate multiple light sources, each light source is illuminated step by step and the imaging focal length with the optical element is adjusted. This allows for the detection of defects at multiple levels of the corresponding optical element, such as for detecting various types of lenses, including biconvex, biconcave, or concave-convex lenses. The up-angled lighting detection unit and the fixed-plate angled lighting detection unit work together to tilt and photograph the optical element from different angles, enabling the detection of optical element defects from multiple angles. The coaxial lighting detection unit can provide parallel light to illuminate the optical element, better detecting ink residue and external damage defects. Furthermore, the multi-step holes on the turntable allow for the placement of carriers for various optical elements, making it suitable for the detection of optical elements of different specifications. This greatly improves production efficiency and detection accuracy, and the structure is compact with a wide range of applications. Attached Figure Description

[0019] Figure 1 This is a perspective view of the optical element defect detection device of this utility model;

[0020] Figure 2 This is a top view of the optical element defect detection device of this utility model;

[0021] Figure 3 This is a schematic diagram of the cleaning unit of this utility model;

[0022] Figure 4 This is a schematic diagram of the structure of the oblique lighting detection unit of this utility model;

[0023] Figure 5 This is a perspective view of the upper illumination detection unit of this utility model;

[0024] Figure 6 This utility model Figure 5 The main view;

[0025] Figure 7 This is a schematic diagram of the structure of the fixed-plate oblique lighting detection unit of this utility model;

[0026] Figure 8 This is a schematic diagram of the coaxial light illumination detection unit of this utility model.

[0027] Explanation of reference numerals in the attached drawings: 1. Rotating platform; 2. Cleaning unit; 3. Upward angled lighting detection unit; 4. Downward lighting detection unit; 5. Upward lighting detection unit; 6. Fixed-plate angled lighting detection unit; 7. Coaxial lighting detection unit; 8. Optical element; 9. Optical element mounting base; 1a. Turntable; 1b. Motor; 1c. Fixed column; 1d. Fiber optic sensor; 1e. Stepped hole; 21. First adjusting seat; 22. Ionizing fan; 23. First fixed seat; 24. Clearance groove; 25. Second fixed seat; 31. Second adjusting seat; 32. First dual-axis moving unit; 33. First mounting base; 34. Second mounting base; 35. First camera 36. Second dual-axis moving unit; 37. Third mounting base; 38. Fourth mounting base; 39. First ring light source; 51. Third adjustment base; 52. First three-axis moving unit; 53. Second camera; 54. Third dual-axis moving unit; 55. Integrating sphere light source; 56. Fourth dual-axis moving unit; 57. Second ring light source; 58. Surface light source; 61. Fourth adjustment base; 62. Fifth dual-axis moving unit; 63. Fifth mounting base; 64. Sixth mounting base; 65. Third camera; 71. Fifth adjustment base; 72. Sixth dual-axis moving unit; 73. Coaxial light source; 74. Second three-axis moving unit; 75. Fourth camera. Detailed Implementation

[0028] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0029] It should be noted that when a component is referred to as being "connected" to another component, it can be directly connected to the other component or there may be an intervening component. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the application.

[0030] like Figures 1-8 As shown, an optical component defect detection device includes a rotating platform 1, and cleaning units 2, at least one downward illumination detection unit 4, and at least one upward illumination detection unit 5 arranged circumferentially around the rotating platform 1, wherein:

[0031] The rotating platform 1 is provided with a number of stepped holes 1e around the circumference for placing optical components 8;

[0032] The lower illumination detection unit 4 and the upper illumination detection unit 5 are inverted relative to each other, and each includes a third adjustment seat 51, a second camera 53, an integrating sphere light source 55, a second ring light source 57, and a surface light source 58. The second camera 53, the integrating sphere light source 55, the second ring light source 57, and the surface light source 58 are distributed sequentially along the optical axis of the second camera 53 and can move horizontally and vertically respectively. The optical element 8 is located between the integrating sphere light source 55 and the second ring light source 57.

[0033] In this embodiment, the horizontal and vertical movement mentioned can be a three-degree-of-freedom motion or a two-degree-of-freedom motion. The vertical direction is defined as the rotation axis of the rotating platform 1, and the horizontal direction is defined as the direction perpendicular to the rotation axis of the rotating platform 1.

[0034] When the rotating platform 1 rotates, it can drive the optical element 8 to rotate and switch workstations. In this embodiment, the optical element 8 is a lens, but it can also be other optical elements. When passing through the workstation where the cleaning unit 2 is located, the optical element 8 is cleaned. When passing through the lower lighting detection unit 4 and the upper lighting detection unit 5, images are captured. The lower lighting detection unit 4 and the upper lighting detection unit 5 are inverted relative to each other, that is, they have the same structure but are installed in opposite directions relative to the rotating platform 1. The second camera 53 and the integrating sphere light source 55 of the lower lighting detection unit 4 are located below the rotating platform 1, and the second ring light source 57 and the surface light source 58 are located above the rotating platform 1. The second camera 53 and the integrating sphere light source 55 of the upper lighting detection unit 5 are located above the rotating platform 1, and the second ring light source 57 and the surface light source 58 are located below the rotating platform 1. The rotating platform 1 and the third adjustment seat 51 can both be installed on the equipment platform (preferably a housing, not shown in the figure). For example, this optical element defect detection device is usually built into the housing to form a dustproof environment and avoid secondary contamination of the optical element 8. Each electrical component can be programmed and controlled via a host computer, a technique well-known to those skilled in the art, and will not be elaborated upon here. When the lower illumination detection unit 4 and the upper illumination detection unit 5 are working, they can illuminate the integrating sphere light source 55, the second ring light source 57, and the surface light source 58 in stages to enable the second camera 53 to capture images under different environmental conditions. For example, if the second camera 53 is equipped with a liquid zoom lens, the liquid zoom lens adjusts its voltage to focus on different layers of the lens as the light sources are illuminated in stages. For instance, when the lens is convex or concave, the integrating sphere light source 55 focuses on the apex of the upper convex surface of the lens, the second ring light source 57 focuses on the apex of the lower concave surface, and the surface light source 58 focuses on the midpoint of the bottom plane of the lens. The specific positions can be adjusted according to actual needs, enabling the detection of defects (scratches, dirt, etc.) on multiple layers of the lens and obtaining multiple images of the optical element 8. Through the lower illumination detection unit 4 and the upper illumination detection unit 5, which integrate multiple light sources, various types of lenses, such as biconvex, biconcave, or concave-convex lenses, can be detected, making it widely applicable. Each camera is preferably equipped with a zoom lens, but a fixed-focus lens can also be used if cost and working environment are considered.

[0035] In one embodiment, both the lower illumination detection unit 4 and the upper illumination detection unit 5 further include a first three-axis movement unit 52, a third two-axis movement unit 54, and a fourth two-axis movement unit 56. The first three-axis movement unit 52 is connected to the third adjustment seat 51 and is used to drive the second camera 53 to move horizontally and vertically. The third two-axis movement unit 54 is connected to the third adjustment seat 51 and is used to drive the integrating sphere light source 55 to move horizontally and vertically. The fourth two-axis movement unit 56 is connected to the third adjustment seat 51 and is used to drive the second ring light source 57 and the surface light source 58 to move horizontally and vertically. The surface light source 58 can move vertically relative to the second ring light source 57.

[0036] The system comprises a first three-axis motion unit 52 that drives the second camera 53 to move in three degrees of freedom; a third two-axis motion unit 54 that drives the integrating sphere light source 55 to move in two degrees of freedom; and a fourth two-axis motion unit 56 that drives the second ring light source 57 and the surface light source 58 to move in two degrees of freedom simultaneously. The third and fourth two-axis motion units 54 and 56 can have the same structure. The first three-axis motion unit 52 has an additional degree of freedom relative to the third and fourth two-axis motion units 54 and 56, allowing for adjustment of its position relative to the center of the rotating platform 1. The surface light source 58 can move vertically relative to the second ring light source 57. For example, the second ring light source 57 and the fourth two-axis motion unit 56 are connected via a first adapter plate, and the surface light source 58 is connected to the first adapter plate via a second adapter plate with an oblong hole, enabling fine-tuning of the distance between the second ring light source 57 and the surface light source 58. This multi-degree-of-freedom adjustment allows for the capture of multiple high-quality images, improving detection accuracy, and the integration of multiple light sources results in a more compact structure.

[0037] In one embodiment, the optical element defect detection device further includes at least one upward-sloping lighting detection unit 3. Each upward-sloping lighting detection unit 3 is circumferentially distributed around the rotating platform 1 and includes a second adjusting seat 31, a first dual-axis moving unit 32, a first mounting seat 33, a second mounting seat 34, a first camera 35, a second dual-axis moving unit 36, a third mounting seat 37, a fourth mounting seat 38, and a first ring light source 39. The first mounting seat 33 has a first through hole, a first arc-shaped hole, and several first oblong holes, and is connected to the first dual-axis moving unit 32 by screws passing through the first oblong holes. The first dual-axis moving unit 32 is connected to the second adjusting seat 31 and is used to drive the first mounting seat 33 to move horizontally and vertically. The adjustment direction of the first oblong holes is perpendicular to the driving direction of the first dual-axis moving unit 32. The second mounting seat 34 is connected to the second adjusting seat 31 by screws passing through the first oblong holes. A screw with a through hole and a first arc-shaped hole is connected to the first mounting base 33. The first camera 35 is connected to the second mounting base 34, and the optical axis of the first camera 35 is coaxial with the first ring light source 39. The third mounting base 37 has a second through hole, a second arc-shaped hole and several second waist-shaped holes, and is connected to the second dual-axis moving unit 36 ​​through a screw passing through the second waist-shaped hole. The second dual-axis moving unit 36 ​​is connected to the second adjusting base 31 and is used to drive the third mounting base 37 to move horizontally and vertically. The adjusting direction of the second waist-shaped hole is perpendicular to the driving direction of the second dual-axis moving unit 36. The fourth mounting base 38 is connected to the third mounting base 37 through a screw passing through the second through hole and the second arc-shaped hole. The first ring light source 39 is connected to the fourth mounting base 38 and is tilted. The first camera 35 and the first ring light source 39 are both located above the rotating platform 1.

[0038] The first camera 35 can be adjusted in multiple degrees of freedom through the cooperation of the first dual-axis moving unit 32, the first mounting base 33, and the second mounting base 34. This includes horizontal and vertical movement, as well as angle adjustment relative to the horizontal plane. The angle between the optical axis of the first camera 35 and the horizontal plane is preferably 45° to 60°, but can be adjusted according to actual needs. The first ring light source 39 can be adjusted in multiple degrees of freedom through the cooperation of the second dual-axis moving unit 36, the third mounting base 37, and the fourth mounting base 38. This includes horizontal and vertical movement, as well as angle adjustment relative to the horizontal plane. The optical axis of the first camera 35 is coaxial with the first ring light source 39, and lighting the first ring light source 39 provides light to the first camera 35.

[0039] In one embodiment, the optical element defect detection device further includes a fixed-plate oblique lighting detection unit 6 corresponding to the upper oblique lighting detection unit 3. The fixed-plate oblique lighting detection unit 6 includes a fourth adjustment seat 61, a fifth dual-axis moving unit 62, a fifth mounting seat 63, a sixth mounting seat 64, and a third camera 65. The fifth mounting seat 63 has a third through hole, a third arc-shaped hole, and several third waist-shaped holes, and is connected to the fifth dual-axis moving unit 62 by screws passing through the third waist-shaped holes. The fifth dual-axis moving unit 62 is connected to the fourth adjustment seat 61 and is used to drive the fifth mounting seat 63 to move horizontally and vertically. The adjustment direction of the third waist-shaped holes is perpendicular to the driving direction of the fifth dual-axis moving unit 62. The sixth mounting seat 64 is connected to the fifth mounting seat 63 by screws passing through the third through hole and the third arc-shaped hole. The third camera 65 is connected to the sixth mounting seat 64 and is located above the rotating platform 1. The optical axis of the third camera 65 intersects with the optical axis of the corresponding first camera 35 on the same optical element 8.

[0040] The cooperation of the fifth dual-axis moving unit 62, the fifth mounting base 63 and the sixth mounting base 64 enables the third camera 65 to achieve multi-degree-of-freedom adjustment, including horizontal and vertical movement, as well as angle adjustment relative to the horizontal plane. By illuminating the first ring light source 39, light can also be provided to the third camera 65 at the same time, so that the third camera 65 and the corresponding first camera 35 can share the same light source and achieve multi-angle shooting through different cameras, such as edge damage and ink residue on the lens, which helps to reduce the size, weight and cost.

[0041] In one embodiment, the optical element defect detection device further includes at least one coaxial light illumination detection unit 7. Each coaxial light illumination detection unit 7 is circumferentially distributed around the rotating platform 1 and includes a fifth adjustment seat 71, a sixth dual-axis moving unit 72, a coaxial light source 73, a second three-axis moving unit 74, and a fourth camera 75. The sixth dual-axis moving unit 72 is connected to the fifth adjustment seat 71 and is used to drive the coaxial light source 73 to move horizontally and vertically. The second three-axis moving unit 74 is connected to the fifth adjustment seat 71 and is used to drive the fourth camera 75 to move horizontally and vertically. The optical element 8 is located between the coaxial light source 73 and the fourth camera 75, and the fourth camera 75 is located below the rotating platform 1.

[0042] The sixth dual-axis movement unit 72 can drive the coaxial light source 73 to move in two degrees of freedom, and the second three-axis movement unit 74 can drive the fourth camera 75 to move in three degrees of freedom. That is, the fourth camera 75 has an additional degree of freedom relative to the coaxial light source 73, which can be adjusted to move closer to or further away from the center of the rotating platform 1. The coaxial light illumination detection unit 7 can detect defects of the type of ink residue and external damage (outer diameter damage).

[0043] In one embodiment, there are three oblique lighting detection units 3, three downward lighting detection units 4, three upward lighting detection units 5, and three fixed-plate oblique lighting detection units 6, and two coaxial lighting detection units 7. The optical element defect detection device is distributed as follows: along the rotation direction on the periphery of the rotating platform 1, the following units are arranged in sequence: cleaning unit 2, oblique lighting detection unit 3, downward lighting detection unit 4, oblique lighting detection unit 3, upward lighting detection unit 5, downward lighting detection unit 4, upward lighting detection unit 5, coaxial lighting detection unit 7, downward lighting detection unit 4, coaxial lighting detection unit 7, upward lighting detection unit 5, and oblique lighting detection unit 3. Each fixed-plate oblique lighting detection unit 6 is circumferentially distributed in the middle of the rotating platform 1 and is relatively stationary with respect to the corresponding oblique lighting detection unit 3.

[0044] The number and distribution of each detection unit can be adjusted according to actual needs, and using multiple units helps to improve detection efficiency. The fixed-plate oblique lighting detection unit 6 is located inside the upper oblique lighting detection unit 3, which can be fixed to the central fixed part of the rotating platform 1, avoiding rotational movement with the rotating platform 1 and maintaining relative stillness with the corresponding upper oblique lighting detection unit 3, thus helping to improve space utilization.

[0045] In one embodiment, the optical element defect detection device further includes an optical fiber sensor 1d for detecting the optical element 8, the optical fiber sensor 1d being located on the loading side of the cleaning unit 2.

[0046] Among them, the fiber optic sensor 1d is located at the station above the cleaning unit 2 and is used to detect whether there is an optical element 8 in the stepped hole 1e, that is, to detect whether the optical element 8 has been loaded. The fiber optic sensor 1d is installed on the equipment platform and located below the rotating platform 1, or its position can be adjusted according to actual needs.

[0047] In one embodiment, the rotating platform 1 includes a turntable 1a, a motor 1b, and a fixed column 1c arranged coaxially. The motor 1b is connected to the fixed column 1c and is used to drive the turntable 1a to rotate. A stepped hole 1e is provided on the turntable 1a.

[0048] The fixing post 1c is coaxially inserted through the hollow position of the motor 1b. The fixed plate oblique lighting detection unit 6 can be circumferentially mounted on the fixing post 1c. The motor 1b can be a DD motor, etc. An optical element mounting base 9 (carrier) can also be installed inside the stepped hole 1e to fix the optical element 8, and also facilitates replacement to adapt to different types and sizes of optical elements 8. The stepped hole 1e can be configured as a multi-layered ring distribution, which can be adjusted according to different space sizes to improve space utilization. For example, when the cleaning unit 2 and each detection unit are adjusted to correspond to the stepped hole 1e of the inner ring, the overall structure will be more compact.

[0049] In one embodiment, the cleaning unit 2 includes a first adjustment seat 21 and an ion fan 22. The ion fan 22 is connected to the first adjustment seat 21 and has a clearance groove 24. When the optical element 8 rotates to the cleaning station, it is built into the clearance groove 24.

[0050] The operation of the ion fan 22 is well known to those skilled in the art and will not be described in detail here. The ion fan 22 is also equipped with a first fixed seat 23, and the housing is equipped with a second fixed seat 25. The first fixed seat 23 and the second fixed seat 25 are connected by a pipe to form a dust collection channel.

[0051] In one embodiment, each adjusting seat is provided with a plurality of horizontally arranged fourth oblong holes and a plurality of vertically arranged fifth oblong holes.

[0052] Each adjustment seat is preferably a T-shaped plate or an L-shaped plate, with a fourth oblong hole in its horizontal part and a fifth oblong hole in its vertical part. For example, the first adjustment seat 21, the second adjustment seat 31, the third adjustment seat 51, and the fifth adjustment seat 71 are connected to the equipment platform through screws passing through the fourth oblong hole to achieve adjustment of the rotation axis direction closer to or away from the rotating platform 1. The fourth adjustment seat 61 is connected to the fixed column 1c through screws passing through the fourth oblong hole to achieve adjustment of the rotation axis direction closer to or away from the rotating platform 1. The first adjustment seat 21 achieves vertical adjustment of the ion fan 22 through screws passing through the fifth oblong hole. The second adjustment seat 31, the third adjustment seat 51, the fourth adjustment seat 61, and the fifth adjustment seat 71 achieve vertical adjustment of the corresponding three-axis moving unit or two-axis moving unit through screws passing through the fifth oblong hole. This can adapt to the assembly and distribution of different lenses or different numbers of detection units to improve space utilization and applicability.

[0053] Working principle:

[0054] During operation, the optical element 8 is placed in the stepped hole 1e at the loading station of the rotating platform 1. When the fiber optic sensor 1d detects the optical element 8, the rotating platform 1 starts to rotate clockwise, causing the mounted optical element 8 to pass sequentially through the cleaning unit 2, the upper inclined lighting detection unit 3, the lower lighting detection unit 4, the upper inclined lighting detection unit 3, the upper lighting detection unit 5, the lower lighting detection unit 4, the upper lighting detection unit 5, the coaxial lighting detection unit 7, the lower lighting detection unit 4, the coaxial lighting detection unit 7, the upper lighting detection unit 5, and the upper inclined lighting detection unit 3. While the upper inclined lighting detection unit 3 is working, the fixed-plate inclined lighting detection unit 6 works synchronously. The cleaning unit 2 cleans the dust from the optical element 8 with negative ion air and then continues to detect it. When passing through the stations of each detection unit, the lower lighting detection unit 4, the upper lighting detection unit 5, and the coaxial lighting detection unit 7 adjust the corresponding three-axis or two-axis moving units to achieve coaxiality of the optical axis of the camera, the corresponding light source, and the optical element 8 for image acquisition. The upward-sloping lighting detection unit 3 and the fixed-plate angled lighting detection unit 6 respectively capture images of the optical element 8 from different angles. This device can be directly connected to the optical element production line for automated feeding to improve work efficiency. After passing through all workstations clockwise, the acquired images can be used for defect detection. Whether manual sorting is used or the images are transmitted to a host computer (such as a computer) for classification and detection using existing deep learning algorithms, the defect detection of optical elements can be completed conveniently and quickly with high accuracy.

[0055] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0056] The embodiments described above are merely specific and detailed examples of the embodiments described in this application, and should not be construed as limiting the scope of the application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these modifications and improvements all fall within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the appended claims.

Claims

1. An optical element defect detection device, characterized in that: It includes a rotating platform (1), and cleaning units (2) circumferentially distributed around the rotating platform (1), at least one lower lighting detection unit (4), and at least one upper lighting detection unit (5), wherein: The rotating platform (1) is provided with a plurality of stepped holes (1e) in the circumferential direction for placing optical elements (8); The lower illumination detection unit (4) and the upper illumination detection unit (5) are inverted relative to each other, and each includes a third adjustment seat (51), a second camera (53), an integrating sphere light source (55), a second ring light source (57), and a surface light source (58). The second camera (53), the integrating sphere light source (55), the second ring light source (57), and the surface light source (58) are distributed sequentially along the optical axis of the second camera (53) and can move horizontally and vertically respectively. The optical element (8) is located between the integrating sphere light source (55) and the second ring light source (57).

2. The optical element defect detection device as described in claim 1, characterized in that: The lower lighting detection unit (4) and the upper lighting detection unit (5) each include a first three-axis moving unit (52), a third two-axis moving unit (54), and a fourth two-axis moving unit (56). The first three-axis moving unit (52) is connected to the third adjustment seat (51) and is used to drive the second camera (53) to move horizontally and vertically. The third two-axis moving unit (54) is connected to the third adjustment seat (51) and is used to drive the integrating sphere light source (55) to move horizontally and vertically. The fourth two-axis moving unit (56) is connected to the third adjustment seat (51) and is used to drive the second ring light source (57) and the surface light source (58) to move horizontally and vertically. The surface light source (58) can move vertically relative to the second ring light source (57).

3. The optical element defect detection device as described in claim 1, characterized in that: The optical element defect detection device further includes at least one upward-sloping light detection unit (3). Each upward-sloping light detection unit (3) is circumferentially distributed around the rotating platform (1) and includes a second adjustment seat (31), a first dual-axis moving unit (32), a first mounting seat (33), a second mounting seat (34), a first camera (35), a second dual-axis moving unit (36), a third mounting seat (37), a fourth mounting seat (38), and a first ring light source (39). The first mounting seat (33) has a first through hole, a first arc-shaped hole, and several first waist-shaped holes, and is connected to the first dual-axis moving unit (32) by screws passing through the first waist-shaped holes. The first dual-axis moving unit (32) is connected to the second adjustment seat (31) and is used to drive the first mounting seat (33) to move horizontally and vertically. The adjustment direction of the first waist-shaped hole is perpendicular to the driving direction of the first dual-axis moving unit (32). The second mounting seat (34) is connected to the second adjustment seat (31) by screws passing through the first through hole and the first arc-shaped hole. The screw with the arc-shaped hole is connected to the first mounting base (33). The first camera (35) is connected to the second mounting base (34), and the optical axis of the first camera (35) is coaxial with the first ring light source (39). The third mounting base (37) is provided with a second through hole, a second arc-shaped hole and several second waist-shaped holes, and is connected to the second dual-axis moving unit (36) through the screw passing through the second waist-shaped hole. The second dual-axis moving unit (36) is connected to the second adjusting base (31) and is used to drive the third mounting base (37) to move in the horizontal and vertical directions. The adjusting direction of the second waist-shaped hole is perpendicular to the driving direction of the second dual-axis moving unit (36). The fourth mounting base (38) is connected to the third mounting base (37) through the screw passing through the second through hole and the second arc-shaped hole. The first ring light source (39) is connected to the fourth mounting base (38) and is tilted. The first camera (35) and the first ring light source (39) are both located above the rotating platform (1).

4. The optical element defect detection device as described in claim 3, characterized in that: The optical element defect detection device also includes a fixed-plate oblique lighting detection unit (6) corresponding to the upper oblique lighting detection unit (3). The fixed-plate oblique lighting detection unit (6) includes a fourth adjustment seat (61), a fifth dual-axis moving unit (62), a fifth mounting seat (63), a sixth mounting seat (64), and a third camera (65). The fifth mounting seat (63) has a third through hole, a third arc-shaped hole, and several third oblong holes, and is connected to the fifth dual-axis moving unit (62) by screws passing through the third oblong holes. The fifth dual-axis moving unit (62) is connected to the fourth adjustment seat (61). The seat (61) is connected to and used to drive the fifth mounting seat (63) to move in the horizontal and vertical directions, and the adjustment direction of the third waist-shaped hole is perpendicular to the driving direction of the fifth dual-axis moving unit (62). The sixth mounting seat (64) is connected to the fifth mounting seat (63) by screws passing through the third through hole and the third arc-shaped hole. The third camera (65) is connected to the sixth mounting seat (64) and is located above the rotating platform (1). The optical axis of the third camera (65) intersects the optical axis of the corresponding first camera (35) on the same optical element (8).

5. The optical element defect detection device as described in claim 4, characterized in that: The optical element defect detection device further includes at least one coaxial light illumination detection unit (7). Each coaxial light illumination detection unit (7) is circumferentially distributed around the rotating platform (1) and includes a fifth adjustment seat (71), a sixth dual-axis moving unit (72), a coaxial light source (73), a second three-axis moving unit (74), and a fourth camera (75). The sixth dual-axis moving unit (72) is connected to the fifth adjustment seat (71) and is used to drive the coaxial light source (73) to move horizontally and vertically. The second three-axis moving unit (74) is connected to the fifth adjustment seat (71) and is used to drive the fourth camera (75) to move horizontally and vertically. The optical element (8) is located between the coaxial light source (73) and the fourth camera (75), and the fourth camera (75) is located below the rotating platform (1).

6. The optical element defect detection device as described in claim 5, characterized in that: There are three of each of the above-slanted lighting detection unit (3), the below-slanted lighting detection unit (4), the above-slanted lighting detection unit (5), and the fixed-plate slanted lighting detection unit (6), and two of the coaxial lighting detection units (7). The distribution of the optical element defect detection device is as follows: along the rotation direction on the periphery of the rotating platform (1), the cleaning unit (2), the above-slanted lighting detection unit (3), the below-slanted lighting detection unit (4), the above-slanted lighting detection unit (3), the above-slanted lighting detection unit (5), the below-slanted lighting detection unit (4), the above-slanted lighting detection unit (5), the coaxial lighting detection unit (7), the below-slanted lighting detection unit (4), the coaxial lighting detection unit (7), the above-slanted lighting detection unit (5), and the above-slanted lighting detection unit (3). Each of the fixed-plate slanted lighting detection units (6) is circumferentially distributed in the middle of the rotating platform (1) and is relatively stationary with respect to the corresponding above-slanted lighting detection unit (3).

7. The optical element defect detection device as described in claim 1, characterized in that: The optical element defect detection device also includes an optical fiber sensor (1d) for detecting the optical element (8), the optical fiber sensor (1d) being located on the loading side of the cleaning unit (2).

8. The optical element defect detection device as described in claim 1, characterized in that: The rotating platform (1) includes a turntable (1a), a motor (1b), and a fixed column (1c) arranged coaxially. The motor (1b) is connected to the fixed column (1c) and is used to drive the turntable (1a) to rotate. The stepped hole (1e) is provided on the turntable (1a).

9. The optical element defect detection device as described in claim 1, characterized in that: The cleaning unit (2) includes a first adjustment seat (21) and an ion fan (22). The ion fan (22) is connected to the first adjustment seat (21) and has a clearance groove (24). When the optical element (8) rotates to the cleaning station, it is built into the clearance groove (24).

10. The optical element defect detection device as described in any one of claims 1-9, characterized in that: Each of the aforementioned adjustment seats is provided with several horizontally arranged fourth oblong holes and several vertically arranged fifth oblong holes.

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