An optical image defect detection system and method

Abstract

The present invention relates to the technical field of detection equipment, specifically an optical image defect detection system and method, including: a light-shielding cover housing, the light-shielding cover housing is arranged as a hollow frustum shape, and a to-be-tested optical lens is arranged in the middle of the inner cavity of the light-shielding cover housing, and the fixture is arranged in a "W" shape; a reflective layer is arranged on the surface of the reflective table, and the adjusting stud is movably and penetratingly connected to the end of the light-shielding cover housing through a thread; a receiving screen is fixedly arranged on the inner side of the mounting ring, and a laser head is installed at the edge of the end of the mounting seat; the beneficial effect is that a conical reflective table is arranged on one side of the to-be-tested optical lens, the laser passes through the to-be-tested optical lens and is reflected by the reflective table and then passes through the to-be-tested optical lens again and projects the image on the surface of the receiving screen, and the reflection path of the laser can be adjusted by adjusting the distance between the reflective table and the to-be-tested optical lens, so as to realize the detection of each position of the to-be-tested optical lens, increase the detection range, and further improve the detection accuracy.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and particularly to an optical image defect detection system and method. Background Art

[0002] An optical image, that is, an optical picture, also known as an analog image, refers to an image with continuously varying grayscale and color. Usually, an optical image is an image obtained by an optical photography system using a photosensitive film as the medium.

[0003] The propagation and reception of an optical image rely on the support of optical components. Among them, the appearance defects of optical lenses are a major obstacle to the propagation of optical images.

[0004] At present, the defect detection instruments for optical lenses can usually only target specific positions of the optical lenses, with a small detection range. During the detection process, it is necessary to continuously adjust the position of the detection probe. Therefore, it is difficult to ensure that the entire surface of the optical lens is accurately detected, and detection errors are likely to occur. For this reason, the present invention proposes an optical image defect detection system and method to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to provide an optical image defect detection system and method to solve the problems in the above background art that the detection probe can only target specific positions of the optical lens, with a small detection range and easy to generate errors.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An optical image defect detection system, comprising:

[0007] A light-shielding cover housing, which is set as a hollow frustum shape. In the middle of the inner cavity of the light-shielding cover housing, there is an optical lens to be tested. On both the upper and lower sides of the optical lens to be tested, there are fixtures, which are set as "W" shapes, and side baffles are fixedly arranged on both side surfaces of the fixtures;

[0008] A reflection table, which is located on one side of the optical lens to be tested and is conical. The surface of the reflection table is provided with a reflective layer. The reflection table is installed at one end of an adjustment screw, and the adjustment screw is movably and penetratingly connected to the end of the light-shielding cover housing through a thread; and

[0009] An installation ring, which is located on the other side of the optical lens to be tested. A receiving screen is fixedly arranged inside the installation ring. A mounting seat is rotatably installed in the middle of the receiving screen, and a laser head is installed at the edge of the end of the mounting seat.

[0010] Preferably, the mounting base is fixedly installed at one end of the rotating shaft, the rotating shaft is movably and penetratingly connected to the middle part of the receiving screen, a driving gear is fixedly sleeved in the middle of the rotating shaft, a rotating electrical connector is connected to the other end of the rotating shaft, and the wire on the rotating electrical connector is electrically connected to an external power supply.

[0011] Preferably, a rotating platform fixedly sleeved with the rotating shaft is arranged on one side of the driving gear, an annular rotating groove is formed on the surface of the rotating platform, and the rotating platform is rotationally connected to the middle part of the receiving screen through a clamping groove.

[0012] Preferably, a driving gear is meshed with the outside of the driving gear, the driving gear is fixedly installed at the output end of a driving motor, and the driving motor is fixedly connected to the back surface of the receiving screen through a bracket.

[0013] Preferably, a detection component is fixedly arranged on the back surface of the receiving screen, the detection component is internally provided with a phase-locked synchronous image processing system, the detection component is electrically connected to the receiving screen, and the transmission cable on the detection component is electrically connected to an external display terminal.

[0014] Preferably, rubber pads are bonded to the mutually close side surfaces of the two clamps, elastic telescopic rods are fixedly connected to both ends of the clamps, one end of the elastic telescopic rod is fixedly connected to the inner side wall of the light-shielding cover shell, and the elastic telescopic rod is a telescopic rod with a built-in thrust spring.

[0015] Preferably, a connecting platform is fixedly arranged at one end of the adjusting stud, a threaded connecting column is fixedly arranged on the back surface of the reflecting platform, the threaded connecting column is fixedly connected to the connecting platform through a thread, and a knob is fixedly connected to the other end of the adjusting stud.

[0016] Preferably, a threaded sleeve is movably sleeved on the outside of the adjusting stud through a thread, and the threaded sleeve is fixedly connected to the inner wall of the light-shielding cover shell.

[0017] Preferably, mounting notches are formed on both sides of the light-shielding cover shell, and a viewing window is arranged on the surface of the light-shielding cover shell.

[0018] A detection method for the optical image defect detection system according to the above, specifically includes the following steps:

[0019] Step 1: Pass the optical lens to be detected through the mounting notch and place it into the inner cavity of the light-shielding cover shell. The clamp moves under the extrusion of the optical lens to be detected and compresses the thrust spring built in the elastic telescopic rod. After the optical lens to be detected moves to the middle between the two clamps, the elastic telescopic rod provides a thrust to ensure that the two clamps can clamp the optical lens to be detected.

[0020] Step 2: Turn on the switch of the laser head and start the drive motor. When the drive motor works, it drives the driving gear to rotate, and then drives the driven gear to rotate. At this time, the mounting seat rotates accordingly, making the laser trajectory emitted by the laser head circular. The laser passes through the optical lens to be measured and then irradiates on the surface of the reflecting table. After being reflected by the reflecting table, it passes through the optical lens to be measured again and projects the laser image on the surface of the receiving screen. The detection component on the back of the receiving screen detects the intensity of the laser signal received by the receiving screen. If there are large defects on the surface of the optical lens to be measured, the laser will scatter when passing through the optical lens to be measured, resulting in a decrease in the laser brightness projected on the receiving screen, so as to detect the surface defects of the optical lens to be measured. After the detection, the signal is transmitted to the display terminal through the transmission cable for the inspectors to observe;

[0021] Step 3: Rotate the knob to drive the adjusting stud to rotate. Since the adjusting stud is threadedly connected to the threaded sleeve, when the adjusting stud rotates, it can move along its own length direction, thereby adjusting the distance between the reflecting table and the optical lens to be measured. Since the laser path after being reflected by the reflecting table passes through the optical lens to be measured obliquely, when the reflecting table moves, the path of its reflected laser changes accordingly. Specifically, the diameter of the circular laser image projected on the surface of the receiving screen becomes larger or smaller. That is to say, as the reflecting table moves, the laser reflected by the reflecting table can pass through different positions on the surface of the optical lens to be measured, so as to detect each position on the surface of the optical lens to be measured.

[0022] Compared with the prior art, the beneficial effects of the present invention are:

[0023] In the present invention, a conical reflecting table is provided on one side of the optical lens to be measured, a reflective layer is provided on the surface of the reflecting table, a laser head is provided on the other side of the optical lens to be measured, and the laser head is installed at the end edge of the mounting seat. When the mounting seat rotates, it drives the laser head to generate a circular laser trajectory. The laser passes through the optical lens to be measured, is reflected by the reflecting table, passes through the optical lens to be measured again, and projects the image on the surface of the receiving screen. By adjusting the distance between the reflecting table and the optical lens to be measured, the reflection path of the laser can be adjusted, so as to detect each position of the optical lens to be measured, increasing the detection range and improving the detection accuracy. Description of the Drawings

[0024] Figure 1 is a three-dimensional schematic diagram of the overall structure of the present invention;

[0025] Figure 2 is an internal schematic diagram of the light shielding housing structure of the present invention;

[0026] Figure 3 is a separated schematic diagram of the reflecting table and adjusting stud structures of the present invention;

[0027] Figure 4 Schematic three-dimensional view of the fixture structure of the present invention;

[0028] Figure 5 Schematic installation view of the laser head structure of the present invention;

[0029] Figure 6 Schematic three-dimensional view of the back of the receiving screen structure of the present invention.

[0030] In the figure: 1, light shielding cover; 101, installation notch; 102, viewing window; 2, optical lens to be measured; 3, fixture; 4, side baffle; 5, reflecting table; 6, adjusting stud; 61, threaded sleeve; 7, mounting ring; 8, receiving screen; 9, laser head; 10, mounting seat; 11, rotating shaft; 12, driving gear; 13, rotating electrical connector; 14, wire; 15, rotating table; 16, card slot; 17, driving gear; 18, driving motor; 19, detection component; 20, conveying cable; 21, rubber pad; 22, elastic telescopic rod; 23, connecting table; 24, threaded connecting column; 25, knob. Detailed implementation manners

[0031] In order to clearly and completely describe the objectives, technical solutions of the present invention, and make the advantages more clear, the following further details the embodiments of the present invention with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, rather than all of the embodiments, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0032] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "middle", "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "side", "vertical", "horizontal", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present invention. In addition, the terms "one", "first", "second", "third", "fourth", "fifth", "sixth" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance.

[0033] In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] For the sake of simplicity and illustration, the principles of the embodiments are mainly described by referring to examples. In the following description, many specific details are set forth to provide a thorough understanding of the embodiments. However, it is obvious that for those of ordinary skill in the art, these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures are not described in detail to avoid unnecessarily obscuring these embodiments. Additionally, all embodiments can be used in combination with each other.

[0035] Please refer to Figures 1 to 6 , the present invention provides a technical solution:

[0036] Embodiment 1

[0037] An optical image defect detection system, comprising: a light shielding cover 1, a reflection table 5, and a mounting ring 7.

[0038] Specifically, the light shielding cover 1 is set as a hollow frustum shape. In the middle of the inner cavity of the light shielding cover 1, an optical lens 2 to be measured is provided. On both the upper and lower sides of the optical lens 2 to be measured, clamps 3 are provided. The clamps 3 are set as a "W" shape. On both side surfaces of the clamps 3, side baffles 4 are fixedly provided. The clamps 3 are used for clamping and positioning the optical lens 2 to be measured, and the setting of the side baffles 4 prevents the optical lens 2 to be measured from being laterally deflected;

[0039] Secondly, the reflection table 5 is located on one side of the optical lens 2 to be measured and is conical. A reflective layer is provided on the surface of the reflection table 5. The reflection table 5 is installed at one end of an adjusting stud 6. The adjusting stud 6 is movably and penetratingly connected to the end of the light shielding cover 1 through a thread. The adjusting stud 6 is used to adjust the distance between the reflection table 5 and the optical lens 2 to be measured;

[0040] Further, the mounting ring 7 is located on the other side of the optical lens 2 to be measured. A receiving screen 8 is fixedly arranged inside the mounting ring 7. A mounting seat 10 is rotatably mounted in the middle of the receiving screen 8. A laser head 9 is mounted at the edge of the end of the mounting seat 10. When the mounting seat 10 rotates, the laser trajectory emitted by the laser head 9 is circular. The laser passes through the optical lens 2 to be measured and is reflected by the reflecting table 5. Since the reflecting table 5 is conical, the reflected laser will pass through the optical lens 2 to be measured obliquely and project a ring with a larger diameter on the surface of the receiving screen 8. If there are large defects on the surface of the optical lens 2 to be measured, the laser will scatter when passing through this position, thereby reducing the laser brightness projected on the surface of the receiving screen 8. Therefore, this device can detect the defects on the surface of the optical lens 2 to be measured by detecting the laser brightness on the surface of the receiving screen 8. By adjusting the distance between the reflecting table 5 and the optical lens 2 to be measured, the path of the reflected laser can be changed, so as to detect different positions on the surface of the optical lens 2 to be measured, thereby increasing the detection range and ensuring that all positions of the optical lens 2 to be measured can be detected.

[0041] Embodiment 2

[0042] On the basis of Embodiment 1, in order to ensure that the laser head 9 can still be electrically connected to the external power supply when rotating, the mounting seat 10 of this application is fixedly installed at one end of the rotating shaft 11. The rotating shaft 11 is movably and penetratingly connected to the middle of the receiving screen 8. A driving gear 12 is fixedly sleeved in the middle of the rotating shaft 11. The other end of the rotating shaft 11 is connected with a rotary electrical connector 13. The wire 14 on the rotary electrical connector 13 is electrically connected to the external power supply. The wire 14 is electrically connected to the laser head 9 to supply power to the laser head 9. The setting of the rotary electrical connector 13 ensures that the wire 14 will not be twisted off when the mounting seat 10 rotates.

[0043] Embodiment 3

[0044] On the basis of Embodiment 2, in order to prevent the position of the rotating shaft 11 from shifting, this application also has a rotating table 15 fixedly sleeved with the rotating shaft 11 on one side of the driving gear 12. An annular rotating table 15 is provided on the surface of the rotating table 15. The rotating table 15 is rotatably connected to the middle of the receiving screen 8 through a card slot 16. Therefore, the rotating shaft 11 can rotate in the middle of the receiving screen 8 without shifting along its own length direction.

[0045] Embodiment 4

[0046] On the basis of Embodiment III, in order to ensure that the laser trajectory emitted by the laser head 9 is circular, the present application further has a driving gear 12 meshed with an outer side of a driving gear 17. The driving gear 17 is fixedly installed at an output end of a driving motor 18. The driving motor 18 is fixedly connected to a back surface of the receiving screen 8 through a bracket. Therefore, when the driving motor 18 operates, it can drive the driving gear 17 to rotate, and then drive the rotating shaft 11 to rotate through the meshing between the driving gear 17 and the driving gear 12. That is to say, the laser trajectory emitted by the laser head 9 can be circular.

[0047] Embodiment V

[0048] On the basis of Embodiment IV, in order to process the laser image received by the receiving screen 8, the present application further has a detection component 19 fixedly arranged on a back surface of the receiving screen 8. The detection component 19 incorporates a lock synchronization image processing system. The detection component 19 is electrically connected to the receiving screen 8. The detection component 19 is a known technology in the art and will not be elaborated here. The main function of the detection component 19 is to process the laser image received by the receiving screen 8. A transmission cable 20 on the detection component 19 is electrically connected to an external display terminal to facilitate an inspector to observe the detection result.

[0049] Embodiment VI

[0050] On the basis of Embodiment V, in order to stably clamp the optical lens 2 to be measured, the present application further has rubber pads 21 bonded to one side surfaces of the two jigs 3 close to each other to protect the optical lens 2 to be measured and increase the friction between the jigs 3 and the optical lens 2 to be measured, avoiding rotation of the optical lens 2 to be measured during the detection process. Both ends of the jigs 3 are fixedly connected to elastic telescopic rods 22. One end of the elastic telescopic rod 22 is fixedly connected to an inner side wall of the light-shielding cover 1. The elastic telescopic rod 22 is a telescopic rod with a built-in thrust spring, thereby ensuring that the two jigs 3 are always close to each other, and further realizing stable clamping of the optical lens 2 to be measured.

[0051] Embodiment VII

[0052] On the basis of Embodiment VI, in order to adjust the distance between the reflecting table 5 and the optical lens 2 to be measured, the present application further has a connecting platform 23 fixedly arranged at one end of the adjusting stud 6. A threaded connecting column 24 is fixedly arranged on a back surface of the reflecting table 5. The threaded connecting column 24 is fixedly connected to the connecting platform 23 through a thread. The other end of the adjusting stud 6 is fixedly connected to a knob 25. An outer side of the adjusting stud 6 is movably sleeved with a threaded sleeve 61 through a thread. The threaded sleeve 61 is fixedly connected to an inner wall of the light-shielding cover 1. An inspector can finely adjust the position of the reflecting table 5 by manually rotating the knob 25, and further adjust the distance between the reflecting table 5 and the optical lens 2 to be measured.

[0053] Embodiment VIII

[0054] On the basis of the seventh embodiment, in order to view the position of the reflecting table 5, the present application further has mounting notches 101 opened on both sides of the light shielding cover 1, so as to facilitate the placement of the optical lens 2 to be measured into the inner cavity of the light shielding cover 1. A viewing window 102 is provided on the surface of the light shielding cover 1, which is convenient for the detection personnel to view the position of the reflecting table 5 at any time.

[0055] The present invention also provides a detection method for the optical image defect detection system according to the above, which specifically includes the following steps:

[0056] Step 1: Pass the optical lens 2 to be measured through the mounting notch 101 and place it into the inner cavity of the light shielding cover 1. The fixture 3 moves under the extrusion of the optical lens 2 to be measured and compresses the thrust spring built in the elastic telescopic rod 22. After the optical lens 2 to be measured moves to the middle between the two fixtures 3, the elastic telescopic rod 22 provides thrust to ensure that the two fixtures 3 can clamp the optical lens 2 to be measured.

[0057] Step 2: Turn on the switch of the laser head 9 and start the drive motor 18. When the drive motor 18 works, it drives the driving gear 17 to rotate, and then drives the driven gear 12 to rotate. At this time, the mounting seat 10 rotates accordingly and makes the laser trajectory emitted by the laser head 9 circular. The laser passes through the optical lens 2 to be measured and then irradiates on the surface of the reflecting table 5. After being reflected by the reflecting table 5, the laser passes through the optical lens 2 to be measured again and projects the laser image on the surface of the receiving screen 8. The detection component 19 on the back of the receiving screen 8 detects the intensity of the laser signal received by the receiving screen 8. If there are large defects on the surface of the optical lens 2 to be measured, the laser will scatter when passing through the optical lens 2 to be measured, resulting in a decrease in the laser brightness projected on the receiving screen 8, so as to realize the detection of the surface defects of the optical lens 2 to be measured. After the detection, the signal is transmitted to the display terminal through the transmission cable 20 for the detection personnel to observe.

[0058] Step 3: Rotate the knob 25 to drive the adjusting stud 6 to rotate. Since the adjusting stud 6 is threadedly connected with the threaded sleeve 61, when the adjusting stud 6 rotates, it can move along its own length direction, thereby adjusting the distance between the reflecting table 5 and the optical lens 2 to be measured. And because the laser path after being reflected by the reflecting table 5 is inclined to pass through the optical lens 2 to be measured, when the reflecting table 5 moves, the path of its reflected laser changes accordingly. Specifically, the diameter of the circular laser image projected on the surface of the receiving screen 8 becomes larger or smaller. That is to say, as the reflecting table 5 moves, the laser reflected by the reflecting table 5 can pass through different positions on the surface of the optical lens 2 to be measured, so as to realize the detection of each position on the surface of the optical lens 2 to be measured.

[0059] Although embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical image defect detection system, characterized in that: Including: A light-shielding cover (1), the light-shielding cover (1) is set as a hollow frustum shape, in the middle of the inner cavity of the light-shielding cover (1) there is an optical lens to be measured (2), on both the upper and lower sides of the optical lens to be measured (2) there are fixtures (3), the fixtures (3) are set as "W" shape, and on both side faces of the fixtures (3) there are fixed side baffles (4); A reflecting table (5), the reflecting table (5) is located on one side of the optical lens to be measured (2) and is conical, on the surface of the reflecting table (5) there is a reflecting layer, the reflecting table (5) is installed at one end of an adjusting stud (6), and the adjusting stud (6) is movably and penetratingly connected to the end of the light-shielding cover (1) through a thread; and An installation ring (7), the installation ring (7) is located on the other side of the optical lens to be measured (2), on the inner side of the installation ring (7) there is a fixed receiving screen (8), in the middle of the receiving screen (8) there is a rotatably installed mounting seat (10), and at the edge of the end of the mounting seat (10) there is a laser head (9) installed; The mounting seat (10) is fixedly installed at one end of a rotating shaft (11), the rotating shaft (11) is movably and penetratingly connected to the middle of the receiving screen (8), in the middle of the rotating shaft (11) there is a fixedly sleeved driving gear (12), at the other end of the rotating shaft (11) there is a connected rotary electrical connector (13), and the wire (14) on the rotary electrical connector (13) is electrically connected to an external power supply; On one side of the driving gear (12) there is a rotating table (15) fixedly sleeved with the rotating shaft (11), on the surface of the rotating table (15) there is an annular card slot (16), and the rotating table (15) is rotationally connected to the middle of the receiving screen (8) through the card slot (16); The outside of the driving gear (12) is meshed with a driving gear (17), the driving gear (17) is fixedly installed at the output end of a driving motor (18), and the driving motor (18) is fixedly connected to the back of the receiving screen (8) through a bracket; On the back of the receiving screen (8) there is a fixed detection component (19), the detection component (19) has a built-in phase-locked synchronous image processing system, the detection component (19) is electrically connected to the receiving screen (8), and the transmission cable (20) on the detection component (19) is electrically connected to an external display terminal; On the side faces close to each other of the two fixtures (3) there is a bonded rubber pad (21), at both ends of the fixtures (3) there are fixedly connected elastic telescopic rods (22), one end of the elastic telescopic rods (22) is fixedly connected to the inner side wall of the light-shielding cover (1), and the elastic telescopic rods (22) are telescopic rods with built-in thrust springs; At one end of the adjusting stud (6) there is a fixed connection platform (23), on the back of the reflecting table (5) there is a thread connection column (24), and the thread connection column (24) is fixedly connected to the connection platform (23) through a thread, and at the other end of the adjusting stud (6) there is a fixedly connected knob (25); A threaded sleeve (61) is movably sleeved on the outer side of the adjusting stud (6) through threads, and the threaded sleeve (61) is fixedly connected to the inner wall of the light-shielding cover (1); Installation notches (101) are formed on both sides of the light-shielding cover (1), and a viewing window (102) is arranged on the surface of the light-shielding cover (1).

2. A detection method for the optical image defect detection system according to claim 1, characterized in that: Specifically, it includes the following steps: Step 1: Pass the optical lens to be measured (2) through the installation notch (101) and place it in the inner cavity of the light-shielding cover (1). The fixture (3) moves under the extrusion of the optical lens to be measured (2) and compresses the thrust spring built in the elastic telescopic rod (22). After the optical lens to be measured (2) moves to the middle between the two fixtures (3), the elastic telescopic rod (22) provides thrust to ensure that the two fixtures (3) can clamp the optical lens to be measured (2); Step 2: Turn on the switch of the laser head (9) and start the drive motor (18). When the drive motor (18) works, it drives the driving gear (17) to rotate, and then drives the driven gear (12) to rotate. At this time, the mounting base (10) rotates accordingly and makes the laser trajectory emitted by the laser head (9) circular. The laser passes through the optical lens to be measured (2) and then irradiates on the surface of the reflecting table (5). After being reflected by the reflecting table (5), it passes through the optical lens to be measured (2) again and projects the laser image on the surface of the receiving screen (8). The detection component (19) on the back of the receiving screen (8) detects the intensity of the laser signal received by the receiving screen (8). If there are large defects on the surface of the optical lens to be measured (2), the laser will be scattered when passing through the optical lens to be measured (2), resulting in a decrease in the laser brightness projected on the receiving screen (8), so as to realize the detection of the surface defects of the optical lens to be measured (2). After the detection, the signal is transmitted to the display terminal through the transmission cable (20) for the inspectors to observe; Step 3: Rotate the knob (25) to drive the adjusting stud (6) to rotate. Since the adjusting stud (6) is threadedly connected to the threaded sleeve (61), when the adjusting stud (6) rotates, it can move along its own length direction, thereby adjusting the distance between the reflecting table (5) and the optical lens to be measured (2). And because the laser path after being reflected by the reflecting table (5) passes through the optical lens to be measured (2) obliquely, when the reflecting table (5) moves, the path of its reflected laser changes accordingly. Specifically, the diameter of the circular laser image projected on the surface of the receiving screen (8) becomes larger or smaller. That is to say, as the reflecting table (5) moves, the laser reflected by the reflecting table (5) can pass through different positions on the surface of the optical lens to be measured (2), so as to realize the detection of each position on the surface of the optical lens to be measured (2).

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