Optical lens inspection equipment

Abstract

The present invention belongs to the field of lens detection, and specifically is a lens optical detection device, comprising a detection box, one side of the detection box is provided with an opening for feeding, the opening is rotatably connected to an electric sealing door, the inner side of the detection box is provided with a movable support platform, the movable support platform comprises a tray for placing lenses to be detected, the tray can be lifted, translated and rotated, and the interior of the detection box is also provided with a plurality of connecting platforms, the connecting platforms are arranged in a bent shape, the plurality of connecting platforms are independent of each other and can rotate, wherein the ends of a plurality of connecting platforms are fixedly connected with a plurality of optical modules facing one side of the lens to be detected, through this arrangement, the detection process of the lenses to be detected under various light sources of different angles is realized, and the detection quality is improved; and the whole process is automatically processed without manual adjustment, and different system parameters are set for lenses to be detected of different models, and the operation can be performed by allowing a plurality of connecting platforms.

Description

Technical Field

[0001] The invention belongs to the field of lens detection, in particular to a lens optical detection device. Background Art

[0002] Optical lenses are transparent materials used to control the propagation of light, usually made of glass or plastic. They can change the direction of light, focus or disperse light to achieve specific visual effects or image quality. Optical lenses are widely used in various optical instruments and equipment. Lenses need to be inspected for quality before leaving the factory or before use, such as whether there are defects such as bubbles inside the lens.

[0003] Traditional lens optical inspection requires the use of light sources to illuminate the lens from various directions, and also requires photographing the state of the lens from different directions. By observing the lens after being illuminated by the light source in the photo, it is possible to detect whether there are bubbles, noise points in the lens, or whether there is damage to the outer contour of the lens.

[0004] Traditional lens inspection equipment can generally only illuminate or photograph the lens from a single angle. The light source and camera are often fixed, making it difficult to illuminate the lens from multiple angles or to photograph the lens at any angle. The lens needs to be moved through multiple different devices to capture the required inspection photos.

[0005] To this end, the present invention provides a lens optical detection device. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problem is: the lens optical inspection equipment described in the present invention comprises an inspection box, one side of the inspection box is provided with an opening for feeding, the opening is rotatably connected to an electric sealing door, a movable support is arranged on the inner side of the inspection box, the movable support comprises a tray for placing the lens to be inspected, the tray can be lifted, translated and rotated, a plurality of connecting platforms are also arranged inside the inspection box, the connecting platforms are arranged in a bent shape, the plurality of connecting platforms are independent of each other and can rotate, the ends of several connecting platforms are fixedly connected to a side of the lens to be inspected with a plurality of optical modules, the other ends of the connecting platforms are installed with a camera module, and the tray is made of a pure transparent fixed material;

[0008] Through the arrangement of multiple connection tables and mobile support tables, the electric sealing door is opened before the inspection, the tray moves through the feed opening to the outside of the inspection box, the lens to be inspected is placed on the tray, and then the tray transfers the lens to be inspected to the inspection box, and the electric sealing door is closed to reduce the influence of external light sources on the inspection. The arc-shaped connection table can be rotated, and the rotatable axis is at the bottom of the connection table, so that the arc-shaped connection table can be moved to the top, bottom and side of the lens to be inspected. An optical module that can emit a light source is fixed to the end face of one or more of the connection tables. At the same time, another connection table can also be rotated to any position, and the lens to be inspected after being illuminated by the light source can be photographed, and multi-angle photography can be performed. After exposure and shooting, the tray can transfer the lens outward and wait for the analysis of the photo to detect the quality of the lens. Many shooting angles require the light source to pass through the lens to be tested and then shoot on the back of the lens to be tested. The tray is made of transparent material, and the tray material can be ultra-pure silicon, so that the light source passing through the lens to be tested can pass through the tray smoothly, which will not affect the photos taken and thus will not affect the detection. Through this setting, the detection process of various light sources at different angles for the lens to be tested is realized, thereby improving the detection quality; and the whole process is automated without manual adjustment. For different models of lenses to be tested, different system parameters are set, and multiple connection stations can perform the operation.

[0009] Preferably, the tray is composed of two flat long plates, the lens to be tested is placed on the top of the long plates, the outer edges of the long plates are set with a smooth transition, the two long plates are fixed to each other at one end away from the lens to be tested, and a liftable negative pressure suction cup is set at the middle of the inner side of the test box. When working, the tray is used to place the lens to be tested for a long time, and scratches are likely to appear on the surface. If a new tray is used every time, the cost is too high. The tray is composed of two long plates, and the lens to be tested is supported from the bottom edge and the other side of the bottom of the lens to be tested, so that part of the light source can be set from top to bottom without obstruction. The lens to be tested is received by the spare module and the details of the lens to be tested can be observed in more detail. The part blocked by the transparent material can also be analyzed to a certain extent. Then the negative pressure suction cup at the bottom moves upward to grab and lift the lens to be tested. At the same time, the tray translates to the empty position at the bottom of the lens to be tested. The negative pressure suction cup then slowly places the lens to be tested on top of the tray, allowing the lens to be tested to undergo another round of optical inspection. In this way, the photos of the lens to be tested are all in an unobstructed state and will not be affected by scratches on the surface of the tray, thereby ensuring the accurate inspection function of the lens to be tested.

[0010] Preferably, the top surface of the negative pressure suction cup is arranged in an arc shape, and the bottom of the negative pressure suction cup is fixedly connected with an electric telescopic rod 1 for driving the negative pressure suction cup to rise and fall, and the bottom of the electric telescopic rod 1 is provided with a driving motor for driving the electric telescopic rod 1 to rotate. When working, the bottom of the negative pressure suction cup is fit with the lens to be detected by extending the electric telescopic rod 1, and a micro negative pressure pump is arranged inside the negative pressure suction cup to generate negative pressure on the top surface of the negative pressure suction cup to adsorb and fix the lens to be detected, and then the tray can move and adjust its own position. When the negative pressure suction cup puts down the lens to be detected, the driving motor drives the electric telescopic rod 1 to rotate to a horizontal state, thereby not affecting the movement of the connecting platform.

[0011] Preferably, a screw nut mechanism 2 is provided on the side of the interior of the detection box close to the electric sealing door, and the screw nut mechanism 2 is vertically arranged. The moving end of the screw nut mechanism 2 is fixedly connected to the tray, and one side of the screw nut mechanism 2 is provided with an electric telescopic rod 2 for driving the screw nut mechanism 2 to move horizontally. When working, the tray is driven to be lifted and lowered horizontally by the screw nut mechanism 2. After the lens to be tested is fixed by the negative pressure suction cup, the electric telescopic rod 2 controls the screw nut mechanism 2 to move horizontally as a whole during the lifting and lowering process of the tray, so as to change the horizontal position of the tray.

[0012] Preferably, a servo motor 2 is fixedly connected to the bottom of the screw nut mechanism 2 for driving the screw nut mechanism 2 to rotate as a whole, the electric telescopic rod 2 is fixedly connected to the detection box, the moving end of the electric telescopic rod 2 is fixedly connected to the outer side of the servo motor 2, and the other side of the servo motor 2 is also fixedly connected to a telescopic rod for maintaining the stability of the servo motor 2, and a stabilizing frame fixed to the detection box is provided on the top of the screw nut mechanism 2, the bottom of the stabilizing frame is disc-shaped, and the bottom of the stabilizing frame is slidably connected to the top of the screw nut mechanism 2. When working, the overall screw nut is driven by the rotation of the servo motor 2. Mechanism 2 rotates so that the tray can move back and forth in and out of the inspection box for placing and taking out the lenses to be inspected, thereby improving the automation capability of the equipment and maintaining the stability of servo motor 2 during translation through the telescopic rod; the top of the stabilizing frame is disc-shaped and is engaged with the top of the screw nut mechanism 2 to support the weight of the screw nut mechanism 2. When the screw nut mechanism 2 moves, the screw nut mechanism 2 and the bottom of the stabilizing frame are relatively displaced, and the stabilizing frame is still engaged therein, which does not hinder the translation process of the screw nut mechanism 2. At the same time, the disc structure allows the screw nut mechanism 2 to rotate normally.

[0013] Preferably, the plurality of connecting platforms are stacked on top of each other, and there are gaps between the plurality of connecting platforms, a central axis is provided between the bottoms of the plurality of connecting platforms, the connecting platforms are rotatably engaged with the outer sides of the central axis, the inner side of the central axis is slidably connected with an electromagnet capable of translation and rotation, the bottom of the connecting platform is made of a magnetizable metal material, and during operation, in order to control the rotation of the plurality of connecting platforms, the plurality of connecting platforms are rotatably connected to the outer sides of the central axis, a magnetic force is generated by energizing the electromagnet, and the electromagnet is moved to the middle of one of the connecting platforms, and as the electromagnet rotates, the connecting platform can be adsorbed and rotated, and under this setting, there is no need to set up a plurality of motors, and the plurality of connecting platforms can be controlled to rotate at the same time, because in most cases, not only two angles of light sources are used for synchronous illumination, but also a plurality of camera modules are used for synchronous shooting and recording, and a large number of connecting platforms are used, and if a plurality of motors are provided, the bottom position of the connecting platform will be too bulky, and the plurality of connecting platforms cannot be rotated arbitrarily.

[0014] Preferably, one end of the electromagnet is fixedly connected to a transmission shaft, and one end of the transmission shaft is fixedly connected to a servo motor 1 for driving the transmission shaft to rotate. A screw nut mechanism 1 capable of circularly moving inside the detection box is arranged on the outer side of the servo motor 1, and the moving end of the screw nut mechanism 1 is fixedly connected to the servo motor 1. When working, the transmission shaft and the electromagnet are driven to rotate by the servo motor 1, and then the corresponding connecting platform is driven to rotate. The servo motor 1 is controlled to move horizontally by the screw nut mechanism 1, so that the electromagnet can be controlled to cooperate with different connecting platforms.

[0015] Preferably, an annular groove is provided on the inner wall of the detection box, two fixing frames are fixedly connected to one side of the central axis, a movable seat is fixedly connected between the fixing frame and one end of the screw nut mechanism, and the movable seat can slide in the annular groove. During operation, the angles of multiple connecting platforms toward the lens to be detected can be adjusted by sliding the movable seat in the annular groove. In this way, when facing different lenses, such as free-form surface lenses, the lenses can be detected from multiple directions and angles. When detecting normal lenses, the quality of the lenses can also be detected from multiple angles by changing the direction, thereby further improving the detection quality and comprehensiveness.

[0016] Preferably, an electric drive gear is installed on the side of the movable seat away from the fixed frame, and a rack matched with the electric drive gear is fixed inside the annular groove. The top and bottom of the movable seat are fixed with convex strips. The movable seat is arranged in an arc shape, and the movable seat is slidably engaged in the annular groove through the convex strip. When working, the movable seat is slidably engaged in the annular groove, and the electric drive gear rotates, and the electric drive gear engages with the convex strip, thereby driving the entire movable seat and the movable platform to move in a circular shape.

[0017] Preferably, a ball bearing for reducing the sliding friction between the connecting platform and the central axis is rotatably clamped on the outer side of the central axis, and an electromagnetic valve is provided between adjacent connecting platforms. The electromagnetic valve is fixedly connected to the outer side of the central axis. When the connecting platform is rotated into place during operation, the electromagnetic valve will be pushed outward to press the side of the connecting platform, thereby providing a huge friction force to the connecting platform, thereby ensuring that the connecting platform can remain stable after being moved into place.

[0018] The beneficial effects of the present invention are as follows:

[0019] 1. The lens optical inspection device described in the present invention realizes the inspection process of various light sources at different angles for the lenses to be inspected through the arrangement of multiple connecting platforms and mobile supporting platforms, thereby improving the inspection quality; and the whole process is automated without the need for manual adjustment. For lenses of different models to be inspected, different system parameters are set, and multiple connecting platforms can perform the operation.

[0020] 2. In the lens optical inspection equipment described in the present invention, the tray is prone to scratches when the lens to be inspected is placed on it for a long time. If a new tray is used each time, the cost is too high. The tray is composed of two long strips to support the lens to be inspected from the bottom edge and the other side of the bottom. In this way, part of the light source can be received by the equipment module from top to bottom without obstruction, so that the details of the lens to be inspected can be observed in more detail, and the part blocked by the transparent material can also be analyzed to a certain extent. After that, the negative pressure suction cup at the bottom moves upward to grab and lift the lens to be inspected, and at the same time, the tray is translated to the empty position at the bottom of the lens to be inspected. The negative pressure suction cup then slowly places the lens to be inspected on the top of the tray, allowing the lens to be inspected to undergo another round of optical inspection process. In this way, the photos of the lens to be inspected taken are all in an unobstructed state, and the observation will not be affected by the scratches on the surface of the tray, thereby ensuring the accurate inspection function of the lens to be inspected. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The present invention will be further described below in conjunction with the accompanying drawings.

[0022] Figure 1 is a stereogram of the present invention;

[0023] Figure 2 It is a schematic diagram of the interior of the detection box of the present invention;

[0024] Figure 3 is a three-dimensional diagram of the connection platform of the present invention;

[0025] Figure 4 It is a three-dimensional diagram of the connecting platform and the moving seat of the present invention;

[0026] Figure 5 is a cross-sectional view of the central axis of the present invention;

[0027] Figure 6is a three-dimensional diagram of the mobile support platform of the present invention;

[0028] Figure 7 It is a three-dimensional diagram of the electric telescopic rod of the present invention;

[0029] In the figure: 1. test box; 2. electric sealing door; 3. annular groove; 4. moving support platform; 5. lens to be tested; 6. electric telescopic rod 1; 7. connecting platform; 8. optical module; 9. camera module; 10. central axis; 11. moving seat; 12. lead screw nut mechanism 1; 13. convex strip; 14. fixing frame; 15. servo motor 1; 16. electric drive gear; 17. solenoid valve; 18. electromagnet; 19. transmission shaft; 20. tray; 21. electric telescopic rod 2; 22. servo motor 2; 23. lead screw nut mechanism 2; 24. stabilizing frame; 25. negative pressure suction cup; 26. drive motor. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0031] like Figures 1 to 7 As shown, a lens optical inspection device according to an embodiment of the present invention comprises an inspection box 1, one side of the inspection box 1 is provided with an opening for feeding, and an electric sealing door 2 is rotatably connected to the opening, a movable support platform 4 is arranged on the inner side of the inspection box 1, and the movable support platform 4 comprises a tray 20 for placing a lens 5 to be inspected, and the tray 20 can be lifted, translated and rotated, and a plurality of connecting platforms 7 are also arranged inside the inspection box 1, and the connecting platforms 7 are arranged in a bent shape, and the plurality of connecting platforms 7 are independent of each other and can rotate, wherein the ends of a plurality of connecting platforms 7 are fixedly connected to a plurality of optical modules 8 facing one side of the lens 5 to be inspected, and the other A camera module 9 is installed at the end of the connecting platform 7, and the tray 20 is made of a pure transparent fixed material. When working, the traditional optical inspection of lenses needs to use a light source to illuminate the lenses from various directions, and it is also necessary to shoot the status of the lenses in different directions. By observing the lenses after being illuminated by the light source in the photos, it is possible to detect whether there are bubbles, noise points in the lenses, or whether there is damage to the outer contour of the lenses. The functions of traditional optical inspection equipment are relatively single, and the light source and camera are often fixed. It is difficult to illuminate the lenses from multiple angles, and it is also difficult to shoot the lenses at any angle. The lenses need to be moved through multiple different devices to shoot the required inspection photos;

[0032] For example, side lighting: the light source comes from the left or right side of the object being photographed, and the light forms an angle of about ninety degrees with the shooting direction of the camera. This kind of light can produce a clear contrast effect between light and dark, highlighting the three-dimensional sense of the object. Side lighting is mainly used to detect scratches, dust particles, pitting, pitting and other tiny defects on the surface of the lens; backlighting: the light source is located behind the object being measured, and the light forms an angle of one hundred and eighty degrees with the camera lens. Backlighting is usually used to highlight the outline and shape of the object. Backlighting is often used to detect cracks, bubbles, impurities, scratches and internal unevenness of the lens. Under backlighting, these defects will form dark areas on the image due to the scattering or absorption of light, and thus be detected. The photos obtained by irradiating and taking pictures at different angles have different detection focuses;

[0033] Through the arrangement of multiple connecting tables 7 and movable support tables 4, the electric sealing door 2 is opened before the inspection, the tray 20 moves through the feed opening to the outside of the inspection box 1, the lens 5 to be inspected is placed on the tray 20, and then the tray 20 transfers the lens 5 to be inspected to the inspection box 1, and the electric sealing door 2 is closed to reduce the influence of external light sources on the inspection, and the arc-shaped connecting table 7 can be rotated, and the rotatable axis is at the bottom of the connecting table 7, so that the arc-shaped connecting table 7 can be moved to the top, bottom and side of the lens 5 to be inspected, and an optical module 8 that can emit a light source is fixed to the end surface of one or more connecting tables 7, and at the same time, another connecting table 7 can also be rotated to any position, and the lens 5 to be inspected after being irradiated by the light source is photographed, and then the inspection is carried out. After multi-angle irradiation and shooting, the tray 20 can transfer the lens outward and wait for the analysis of the photo to detect the quality of the lens. Many shooting angles require that the light source passes through the lens 5 to be tested and then shoots on the back of the lens 5 to be tested. The tray 20 is made of transparent material, and the material of the tray 20 can be ultra-pure silicon, so that the light source passing through the lens 5 to be tested can pass through the tray 20 smoothly, which will not affect the taken photos and thus will not affect the detection. Through this setting, the detection process of various light sources at different angles for the lens 5 to be tested is realized, and the detection quality is improved; and the whole process is automated without manual adjustment. For different models of lenses 5 to be tested, different system parameters are set, and multiple connection stations 7 can be used to perform operations.

[0034] The tray 20 is composed of two flat long plates, the lens 5 to be tested is placed on the long plates, the outer edges of the long plates are set with smooth transition, the ends of the two long plates away from the lens 5 to be tested are fixed to each other, and a negative pressure suction cup 25 that can be raised and lowered is set in the middle of the inner side of the test box 1;

[0035] During operation, the tray 20 is used to place the lens 5 to be inspected for a long time, and scratches are likely to appear on the surface. If a new tray 20 is used each time, the cost is too high. The tray 20 is composed of two long strips to support the lens 5 to be inspected from the bottom edge and the other side of the bottom. In this way, part of the light source can be received by the equipment module 9 from top to bottom without obstruction, so that the details of the lens 5 to be inspected can be observed in more detail, and the part blocked by the transparent material can also be analyzed to a certain extent. Then, the negative pressure suction cup 25 at the bottom moves upward to grab and lift the lens 5 to be inspected, and at the same time, the tray 20 is translated to the empty position at the bottom of the lens 5 to be inspected. The negative pressure suction cup 25 then slowly places the lens 5 to be inspected on the top of the tray 20, allowing the lens 5 to be inspected to undergo another round of optical inspection. In this way, the photos of the lens 5 to be inspected taken are all in an unobstructed state, and the observation will not be affected by the scratches on the surface of the tray 20, thereby ensuring the accurate inspection function of the lens 5 to be inspected.

[0036] The top surface of the negative pressure suction cup 25 is arranged in an arc shape, and the bottom of the negative pressure suction cup 25 is fixedly connected with an electric telescopic rod 6 for driving the negative pressure suction cup 25 to rise and fall, and the bottom of the electric telescopic rod 6 is provided with a driving motor 26 for driving the electric telescopic rod 6 to rotate;

[0037] During operation, the electric telescopic rod 6 is extended to allow the bottom of the negative pressure suction cup 25 to fit with the lens to be tested 5. A micro negative pressure pump is arranged inside the negative pressure suction cup 25 to generate negative pressure on the top surface of the negative pressure suction cup 25 to adsorb and fix the lens to be tested 5. Then the tray 20 can move and adjust its own position. When the negative pressure suction cup 25 puts down the lens to be tested 5, the driving motor 26 drives the electric telescopic rod 6 to rotate to a horizontal state, thereby not affecting the movement of the connecting platform 7.

[0038] A second lead screw nut mechanism 23 is provided on one side of the detection box 1 near the electric sealing door 2. The second lead screw nut mechanism 23 is vertically arranged, and a moving end of the second lead screw nut mechanism 23 is fixedly connected to the tray 20. One side of the second lead screw nut mechanism 23 is provided with a second electric telescopic rod 21 for driving the second lead screw nut mechanism 23 to move horizontally.

[0039] During operation, the tray 20 is driven to move horizontally by the screw nut mechanism 23. After the lens 5 to be tested is fixed by the negative pressure suction cup 25, during the lifting process of the tray 20, the electric telescopic rod 21 controls the screw nut mechanism 23 to move horizontally as a whole to change the horizontal position of the tray 20.

[0040] The bottom of the screw nut mechanism 23 is fixedly connected with a servo motor 22 for driving the screw nut mechanism 23 to rotate as a whole, the electric telescopic rod 21 is fixedly connected to the detection box 1, the moving end of the electric telescopic rod 21 is fixedly connected to the outer side of the servo motor 22, and the other side of the servo motor 22 is also fixedly connected with a telescopic rod for maintaining the stability of the servo motor 22, and the top of the screw nut mechanism 23 is provided with a stabilizing frame 24 fixedly connected to the detection box 1, the bottom of the stabilizing frame 24 is disc-shaped, and the bottom of the stabilizing frame 24 is slidably connected to the top of the screw nut mechanism 23;

[0041] During operation, the rotation of the servo motor 22 drives the overall lead screw nut mechanism 23 to rotate, so that the tray 20 can move back and forth in and out of the detection box 1, and is used for the placement and removal of the lens 5 to be detected, thereby improving the automation capability of the equipment, and maintaining the stability of the servo motor 22 during translation through the telescopic rod; the top of the stabilizing frame 24 is disc-shaped, which is engaged with the top of the lead screw nut mechanism 23 to support the weight of the lead screw nut mechanism 23. When the lead screw nut mechanism 23 moves, the lead screw nut mechanism 23 and the bottom of the stabilizing frame 24 are relatively displaced, and the stabilizing frame 24 is still engaged therein, which does not hinder the translation process of the lead screw nut mechanism 23. At the same time, the disc structure allows the lead screw nut mechanism 23 to rotate normally.

[0042] The plurality of connecting platforms 7 are stacked on each other, and there are gaps between the plurality of connecting platforms 7. A central axis 10 is provided between the bottoms of the plurality of connecting platforms 7. The connecting platforms 7 are rotatably engaged with the outer sides of the central axis 10. The inner side of the central axis 10 is slidably connected with an electromagnet 18 capable of translation and rotation. The bottom of the connecting platform 7 is made of a metal material that can be magnetized.

[0043] During operation, in order to control the rotation of multiple connecting platforms 7, multiple connecting platforms 7 are rotatably connected to the outside of the central axis 10, and the electromagnet 18 is energized to generate magnetic force, so that the electromagnet 18 moves to the middle of one of the connecting platforms 7. As the electromagnet 18 rotates, the connecting platform 7 can be adsorbed and rotated. Under this setting, there is no need to set up multiple motors to control the rotation of multiple connecting platforms 7 at the same time, because in most cases, not only two angles of light sources are used for synchronous illumination, but also multiple camera modules are used for synchronous shooting and recording. A large number of connecting platforms 7 are used. If multiple motors are set, the bottom position of the connecting platform 7 will be too bloated, and multiple connecting platforms 7 cannot be rotated arbitrarily.

[0044] One end of the electromagnet 18 is fixedly connected to a transmission shaft 19, and one end of the transmission shaft 19 is fixedly connected to a servo motor 15 for driving the transmission shaft 19 to rotate. A lead screw nut mechanism 12 capable of circular movement inside the detection box 1 is arranged outside the servo motor 15, and the moving end of the lead screw nut mechanism 12 is fixedly connected to the servo motor 15;

[0045] During operation, the servo motor 15 drives the transmission shaft 19 and the electromagnet 18 to rotate, thereby driving the corresponding connecting platform 7 to rotate, and the servo motor 15 is controlled by the screw nut mechanism 12 to move horizontally, so that the electromagnet 18 can be controlled to cooperate with different connecting platforms 7.

[0046] An annular groove 3 is provided on the inner wall of the detection box 1, two fixing frames 14 are fixedly connected to one side of the central axis 10, and a moving seat 11 is fixedly connected between the fixing frame 14 and one end of the screw nut mechanism 12, and the moving seat 11 can slide in the annular groove 3;

[0047] During operation, the movable seat 11 slides in the annular groove 3 to adjust the angles of the multiple connecting platforms 7 toward the lens 5 to be tested. In this way, when facing different lenses, such as free-form surface lenses, the lenses can be tested from multiple directions and angles. When testing normal lenses, the quality of the lenses can also be tested from multiple angles by changing the direction, thereby further improving the test quality and comprehensiveness.

[0048] An electric drive gear 16 is installed on the side of the movable seat 11 away from the fixed frame 14, a rack gear matched with the electric drive gear 16 is fixedly connected inside the annular groove 3, and convex strips 13 are fixedly connected to the top and bottom of the movable seat 11. The movable seat 11 is arranged in an arc shape, and the movable seat 11 is slidably engaged in the annular groove 3 through the convex strips 13;

[0049] During operation, the moving seat 11 is slidably engaged in the annular groove 3, and the electric drive gear 16 rotates, and the electric drive gear 16 meshes with the convex strip 13, thereby driving the entire moving seat 11 and the moving platform 7 to move in an annular manner.

[0050] The outer side of the central shaft 10 is rotatably clamped with a ball for reducing the sliding friction between the connecting platform 7 and the central shaft 10. A solenoid valve 17 is provided between adjacent connecting platforms 7, and the solenoid valve 17 is fixedly connected to the outer side of the central shaft 10.

[0051] During operation, when the connecting platform 7 is rotated into position, the solenoid valve 17 will be pushed outward to press the side of the connecting platform 7, providing a huge friction force to the connecting platform 7, ensuring that the connecting platform 7 can remain stable after being moved into position.

[0052] During operation, through the arrangement of multiple connecting platforms 7 and movable support platforms 4, the electric sealing door 2 is opened before detection, the tray 20 moves through the feed opening to the outside of the detection box 1, and the lens 5 to be detected is placed on the tray 20. Then, the tray 20 transfers the lens 5 to be detected to the detection box 1, and the electric sealing door 2 is closed to reduce the influence of external light sources on the detection. The arc-shaped connecting platform 7 can be rotated, and the rotatable axis is at the bottom of the connecting platform 7, so that the arc-shaped connecting platform 7 can be moved to the top, bottom and side of the lens 5 to be detected. An optical module 8 that can emit a light source is fixed to the end surface of one or more connecting platforms 7. At the same time, another connecting platform 7 can also be rotated to any position to photograph the lens 5 to be detected after being irradiated by the light source. After multi-angle irradiation and shooting, the tray 20 can be used to transfer the lens outwards, waiting for the analysis of the photo, so as to detect the quality of the lens. Many shooting angles require that the light source passes through the lens to be tested 5, and then shoots on the back of the lens to be tested 5. Through the transparent tray 20, the material of the tray 20 can be ultra-pure silicon, so that the light source passing through the lens to be tested 5 can pass through the tray 20 smoothly, which will not affect the photographed photos, and thus will not affect the detection. Through this setting, the detection process of the lens to be tested 5 with various light sources at different angles is realized, and the detection quality is improved; and the whole process is automated, without manual adjustment, and different system parameters are set for different models of lenses to be tested 5, so that multiple connection stations 7 can perform the operation;

[0053] The tray 20 is prone to scratches on its surface when the lens 5 to be tested is placed for a long time. If a new tray 20 is used every time, the cost is too high. The tray 20 is composed of two long strips to support the lens 5 to be tested from the bottom edge and the other side of the bottom. In this way, part of the light source can be received by the equipment module 9 from top to bottom without obstruction, so that the details of the lens 5 to be tested can be observed in more detail, and the part blocked by the transparent material can also be analyzed to a certain extent. Then, the negative pressure suction cup 25 at the bottom moves upward to grab and lift the lens 5 to be tested, and at the same time, the tray 20 is translated to the empty position at the bottom of the lens 5 to be tested. The negative pressure suction cup 25 then slowly puts the lens 5 to be tested on the top of the tray 20, so that the lens 5 to be tested undergoes another round of optical inspection process. In this way, all the photos of the lens 5 to be tested taken are in an unobstructed state, and the scratches on the surface of the tray 20 will not affect the observation, thereby ensuring the accurate inspection function of the lens 5 to be tested.

[0054] The bottom of the negative pressure suction cup 25 is extended by the electric telescopic rod 6 to fit the lens 5 to be tested. A micro negative pressure pump is arranged inside the negative pressure suction cup 25 to generate negative pressure on the top surface of the negative pressure suction cup 25 to absorb and fix the lens 5 to be tested. Then the tray 20 can move and adjust its position. When the negative pressure suction cup 25 puts down the lens 5 to be tested, the driving motor 26 drives the electric telescopic rod 6 to rotate to a horizontal state, so as not to affect the movement of the connecting platform 7.

[0055] The tray 20 is driven to move horizontally by the screw nut mechanism 23. After the lens 5 to be tested is fixed by the negative pressure suction cup 25, during the lifting process of the tray 20, the electric telescopic rod 21 controls the screw nut mechanism 23 to move horizontally as a whole, so as to change the horizontal position of the tray 20;

[0056] The rotation of the servo motor 22 drives the overall lead screw nut mechanism 23 to rotate, so that the tray 20 can be moved back and forth inside and outside the detection box 1 for placing and taking the lens 5 to be detected, thereby improving the automation capability of the equipment, and maintaining the stability of the servo motor 22 during translation through the telescopic rod; the top of the stabilizing frame 24 is disc-shaped, which is engaged with the top of the lead screw nut mechanism 23 to support the weight of the lead screw nut mechanism 23. When the lead screw nut mechanism 23 moves, the lead screw nut mechanism 23 and the bottom of the stabilizing frame 24 are relatively displaced, and the stabilizing frame 24 is still engaged therein, which does not hinder the translation process of the lead screw nut mechanism 23. At the same time, the disc structure allows the lead screw nut mechanism 23 to rotate normally;

[0057] In order to control the rotation of multiple connection platforms 7, multiple connection platforms 7 are rotatably connected to the outside of the central axis 10, and the electromagnet 18 is energized to generate magnetic force, so that the electromagnet 18 moves to the middle of one of the connection platforms 7. As the electromagnet 18 rotates, the connection platform 7 can be adsorbed and rotated. Under this setting, it is not necessary to set up multiple motors to simultaneously control the rotation of multiple connection platforms 7, because in most cases, not only two angles of light sources are used for synchronous illumination, but also multiple camera modules are used for synchronous shooting and recording. A large number of connection platforms 7 are used. If multiple motors are set, the bottom position of the connection platform 7 will be too bloated, and multiple connection platforms 7 cannot be rotated arbitrarily.

[0058] The servo motor 15 drives the transmission shaft 19 and the electromagnet 18 to rotate, thereby driving the corresponding connection platform 7 to rotate, and the servo motor 15 is controlled by the screw nut mechanism 12 to move horizontally, so that the electromagnet 18 can be controlled to cooperate with different connection platforms 7;

[0059] By sliding the movable seat 11 in the annular groove 3, the angles of the multiple connecting platforms 7 toward the lens to be tested 5 can be adjusted. In this way, when facing different lenses, such as free-form surface lenses, the lenses can be tested from multiple directions and angles. When testing normal lenses, the quality of the lenses can also be tested from multiple angles by changing the direction, which further improves the quality and comprehensiveness of the test.

[0060] The moving seat 11 is slidably engaged in the annular groove 3, and the electric drive gear 16 rotates, and the electric drive gear 16 meshes with the convex strip 13, thereby driving the entire moving seat 11 and the moving platform 7 to move in an annular manner;

[0061] When the connecting platform 7 is rotated into position, the solenoid valve 17 will be pushed outward to press the side of the connecting platform 7, providing a huge friction force to the connecting platform 7, ensuring that the connecting platform 7 can remain stable after being moved into position.

[0062] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lens optical inspection device, characterized in that: The invention comprises a testing box (1), wherein one side of the testing box (1) is provided with an opening for feeding, and the opening is rotatably connected to an electric sealing door (2); a movable support platform (4) is arranged on the inner side of the testing box (1); the movable support platform (4) comprises a tray (20) for placing a lens (5) to be tested; the tray (20) is capable of lifting, translating and rotating; a plurality of connecting platforms (7) are also arranged inside the testing box (1); the connecting platforms (7) are arranged in a bent shape; the plurality of connecting platforms (7) are independent of each other and are capable of rotating; the ends of a plurality of connecting platforms (7) are fixedly connected to a side of the lens (5) to be tested with a plurality of optical modules (8); the ends of the other connecting platforms (7) are mounted with a camera module (9); and the tray (20) is made of a pure transparent fixed material; The tray (20) is composed of two flat long plates, the lens to be tested (5) is placed on the long plates, the outer edges of the long plates are arranged with a smooth transition, the two long plates are fixedly connected to each other at one end away from the lens to be tested (5), and a negative pressure suction cup (25) that can be raised and lowered is arranged in the middle of the inner side of the testing box (1); The top surface of the negative pressure suction cup (25) is arranged in an arc shape, and the bottom of the negative pressure suction cup (25) is fixedly connected to an electric telescopic rod (6) for driving the negative pressure suction cup (25) to rise and fall, and the bottom of the electric telescopic rod (6) is provided with a driving motor (26) for driving the electric telescopic rod (6) to rotate; A second lead screw nut mechanism (23) is arranged on one side of the detection box (1) near the electric sealing door (2), the second lead screw nut mechanism (23) is arranged vertically, the moving end of the second lead screw nut mechanism (23) is fixedly connected to the tray (20), and a second electric telescopic rod (21) for driving the second lead screw nut mechanism (23) to move horizontally is arranged on one side of the second lead screw nut mechanism (23); A servo motor (22) for driving the screw nut mechanism (23) as a whole to rotate is fixedly connected to the bottom of the screw nut mechanism (23); the electric telescopic rod (21) is fixedly connected to the detection box (1); the movable end of the electric telescopic rod (21) is fixedly connected to the outer side of the servo motor (22); the other side of the servo motor (22) is also fixedly connected to a telescopic rod for maintaining the stability of the servo motor (22); a stabilizing frame (24) fixedly connected to the detection box (1) is provided at the top of the screw nut mechanism (23); the bottom of the stabilizing frame (24) is disc-shaped, and the bottom of the stabilizing frame (24) is slidably engaged with the top of the screw nut mechanism (23); A plurality of the connecting platforms (7) are stacked on top of each other, and gaps exist between the plurality of the connecting platforms (7). A central axis (10) is provided between the bottoms of the plurality of the connecting platforms (7). The connecting platforms (7) are rotatably engaged with the outer sides of the central axis (10). An electromagnet (18) capable of translational and rotational movement is slidably connected to the inner side of the central axis (10). The bottom of the connecting platform (7) is made of a metal material that can be magnetized.

2. The lens optical inspection device according to claim 1, characterized in that: One end of the electromagnet (18) is fixedly connected to a transmission shaft (19), and one end of the transmission shaft (19) is fixedly connected to a servo motor (15) for driving the transmission shaft (19) to rotate. A lead screw nut mechanism (12) capable of circular movement inside the detection box (1) is arranged outside the servo motor (15), and the moving end of the lead screw nut mechanism (12) is fixedly connected to the servo motor (15).

3. The lens optical inspection device according to claim 2, characterized in that: An annular groove (3) is provided on the inner wall of the detection box (1); two fixing frames (14) are fixedly connected to one side of the central axis (10); a movable seat (11) is fixedly connected between the fixing frame (14) and one end of a lead screw nut mechanism (12); and the movable seat (11) is capable of sliding in the annular groove (3).

4. The lens optical inspection device according to claim 3, characterized in that: An electric drive gear (16) is installed on a side of the movable seat (11) away from the fixed frame (14); a rack gear matched with the electric drive gear (16) is fixedly connected inside the annular groove (3); convex strips (13) are fixedly connected to the top and bottom of the movable seat (11); the movable seat (11) is arranged in an arc shape; the movable seat (11) is slidably engaged in the annular groove (3) via the convex strips (13).

5. The lens optical inspection device according to claim 4, characterized in that: A ball bearing for reducing the sliding friction between the connecting platform (7) and the central shaft (10) is rotatably engaged on the outer side of the central shaft (10), and a solenoid valve (17) is provided between adjacent connecting platforms (7), wherein the solenoid valve (17) is fixedly connected to the outer side of the central shaft (10).

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