Non-contact optical lens thickness measuring instrument

Abstract

A non-contact optical lens thickness measuring instrument comprises a workbench, a measuring instrument is fixedly arranged at the top of the workbench, a detection head is arranged on the measuring instrument, a placement table is arranged at the top of the workbench, and a telescopic assembly for driving the placement table to move vertically is arranged on the workbench. Two symmetrically-arranged supporting plates are fixedly arranged at the top of the workbench, a horizontally-arranged U-shaped plate is arranged between the two supporting plates in a sliding mode, the opening direction of the U-shaped plate faces the containing table, two symmetrically-arranged cleaning plates are arranged in the U-shaped plate up and down, and driving assemblies for driving the U-shaped plate to move are arranged on the supporting plates. A clamping assembly for fixing a lens is arranged at the top of the workbench, after the lens is clamped by the clamping assembly, the driving assembly drives the two cleaning plates to horizontally move through the U-shaped plate, and the two cleaning plates clean dust on the surface of the lens. Dust scattering light rays on the surface of the optical lens during detection are avoided, so that the accuracy of a measurement result of the thickness of the optical lens is improved.

Description

Technical Field

[0001] The invention relates to the technical field of intelligent measuring instruments, and in particular to a non-contact optical lens thickness measuring instrument. Background Art

[0002] The lens measuring instrument mainly works based on the principle of optics. When the lens to be tested is placed on the tester, the tester will emit a beam of light to the surface of the lens. The light will be refracted and reflected on the surface of the lens. By measuring the reflection and refraction of different light rays, the various parameters of the lens can be calculated. In the manufacturing process of optical lenses, thickness measurement is a key step to ensure product quality. However, traditional lens measuring instruments measure the thickness of optical lenses by contacting the lens with a probe, which can easily cause scratches or wear on the optical lens, affecting the use of the optical lens. Therefore, a non-contact optical lens thickness measuring instrument is needed to measure the thickness of the lens using optical measurement technology.

[0003] For example, in the field of intelligent measurement technology, there is a patent document with the publication number "CN220818941U" and the name "An optical lens thickness detection mechanism", which includes a base, a running plate fixedly connected to the inner side of the base, a controller fixedly connected to the outer side of the running plate, a detection head fixedly connected to the bottom of the running plate, and a display fixedly connected to the outer side of the base. By setting up the base, the lens is first placed on the top of the induction plate, and the lens on the top of the induction plate is clamped by the first clamping cover and the second clamping cover. At this time, the detection head is started by the controller on the outer side of the running plate, so that the detection head detects the lens on the top of the induction plate.

[0004] However, in the process of lens inspection in the above-mentioned document, since the surface of the optical lens is easily contaminated with dust during the production or storage process, and the dust on the surface of the optical lens cannot be cleaned before inspection, when the inspection head inspects the thickness of the optical lens, the dust on the surface of the optical lens will scatter the light and affect the propagation path of the light, resulting in inaccurate measurement results. Summary of the invention

[0005] The purpose of the present invention is to propose a non-contact optical lens thickness measuring instrument in view of the deficiencies in the prior art, which is used to solve the technical problem mentioned in the background technology that the dust on the surface of the optical lens cannot be cleaned before detection, resulting in the dust on the surface of the optical lens scattering light when the detection head detects the thickness of the optical lens, affecting the propagation path of the light and causing the measurement result to be inaccurate.

[0006] To achieve the above object, the present invention adopts the following technical solutions: A non-contact optical lens thickness measuring instrument comprises a workbench, wherein a measuring instrument is fixedly arranged on the top of the workbench, a detection head is arranged on the measuring instrument, a placing table is arranged on the top of the workbench, a telescopic component that drives the placing table to move vertically is arranged on the workbench, two symmetrically arranged supporting plates are fixedly arranged on the top of the workbench, a horizontally arranged U-shaped plate is slidably arranged between the two supporting plates, the opening direction of the U-shaped plate faces the placing table, two symmetrically arranged cleaning plates are arranged one above and one below in the U-shaped plate, a driving component that drives the U-shaped plate to move horizontally is arranged on the supporting plate, a clamping component that fixes the lens is arranged on the top of the workbench, after the clamping component clamps the lens, the driving component drives the two cleaning plates to move horizontally through the U-shaped plate, and the two cleaning plates clean dust on the surface of the lens.

[0007] Working principle: When measuring the thickness of the optical lens, place the optical lens on the placement table. At this time, the upper surface of the optical lens is higher than the upper surface of the clamping plate, and the lower surface of the optical lens is lower than the lower surface of the clamping plate. The optical lens is then clamped and fixed by the clamping assembly. When wiping the dust on the optical lens, the placement table is driven downward by the telescopic assembly to prevent the placement table from obstructing the movement of the U-shaped plate. The U-shaped plate is then driven toward the optical lens by the driving assembly. The movement of the U-shaped plate drives the two cleaning plates to move. The movement of the two cleaning plates drives the cleaning cloth to contact the upper and lower surfaces of the optical lens respectively, thereby cleaning the dust on the upper and lower surfaces of the optical lens.

[0008] The beneficial effects of the present invention are as follows: since a horizontally arranged U-shaped plate is slidably arranged between two support plates, the opening direction of the U-shaped plate faces the placement table, two symmetrically arranged cleaning plates are arranged one above and one below the U-shaped plate, and a driving component for driving the U-shaped plate to move horizontally is arranged on the support plate, the dust on the surface of the optical lens can be cleaned before detection, and the placement table is driven downward by the telescopic component to prevent the placement table from hindering the movement of the U-shaped plate. Then, the U-shaped plate is driven by the driving component to move toward the direction of the optical lens, and the movement of the U-shaped plate drives the two cleaning plates to move, and the movement of the two cleaning plates respectively drives the cleaning cloth to contact the upper and lower surfaces of the optical lens, thereby cleaning the dust on the upper and lower surfaces of the optical lens. Therefore, before the detection head detects the thickness of the optical lens, the dust on the surface of the optical lens can be cleaned to avoid the dust on the surface of the optical lens scattering light during detection, thereby improving the accuracy of the measurement result of the thickness of the optical lens.

[0009] Furthermore, the U-shaped plate is symmetrically provided with rotating components for driving the corresponding cleaning plates to rotate respectively, the rotating components include a first rotating shaft and a second rotating shaft, the first rotating shaft and the second rotating shaft are respectively rotatably provided on the U-shaped plate, a transmission component is provided between the first rotating shaft and the second rotating shaft, one end of the first rotating shaft is fixedly connected to the center of the corresponding cleaning plate, a horizontally arranged rack is fixedly provided on one of the support plates, and a gear meshing with the rack is fixedly sleeved on the second rotating shaft. When the U-shaped plate moves horizontally, the gear is driven to move through the second rotating shaft, and at the same time, the gear meshes with the rack to drive the second rotating shaft to rotate, and the second rotating shaft drives the first rotating shaft to rotate through the transmission component.

[0010] Furthermore, the transmission assembly includes a first pulley and a second pulley, the first pulley is fixedly sleeved on the first rotating shaft, the second pulley is fixedly sleeved on the second rotating shaft, and belts are sleeved on the second pulley and the first pulley.

[0011] Furthermore, the driving assembly includes a motor and a moving rod, the moving rod is slidably arranged between two support plates, and the moving rod is fixedly connected to the U-shaped plate, the motor is fixedly arranged on one of the support plates, and a threaded rod is fixedly arranged at the output end of the motor, and the threaded rod passes through the moving rod and is threadedly connected to the moving rod.

[0012] Furthermore, a fixed tube is symmetrically fixed on the U-shaped plate, one end of the fixed tube extends to the interior of the U-shaped plate and is fixedly provided with a wind hood, and the other end of the fixed tube is fixedly connected to a telescopic tube, and a blowing assembly is fixedly provided on one of the support plates, and the blowing assembly is connected to the telescopic tube.

[0013] Furthermore, the blowing assembly includes a piston cylinder and a piston plate, the piston cylinder is fixedly arranged on one of the support plates, the piston plate is slidably arranged inside the piston cylinder, a piston rod is fixedly arranged on one side of the piston plate, one end of the piston rod extends to the outside of the piston cylinder and is fixedly connected to the moving rod, a first air outlet pipe and a first air inlet pipe are fixedly arranged on one end of the piston cylinder, a second air outlet pipe and a second air inlet pipe are fixedly arranged on the other end of the piston cylinder, one-way valves are arranged on the first air outlet pipe, the first air inlet pipe, the second air outlet pipe and the second air inlet pipe, the first air outlet pipe is fixedly connected to the corresponding telescopic pipe, and the second air outlet pipe is fixedly connected to the corresponding telescopic pipe.

[0014] Furthermore, the clamping assembly includes two telescopic rods symmetrically fixedly arranged on the top of the workbench, second electric push rods are fixedly arranged on opposite sides of the two telescopic rods, and a clamping plate is fixedly arranged on the output end of the second electric push rod.

[0015] Furthermore, a protective pad is fixedly provided on one side of the splint.

[0016] Furthermore, the telescopic rod includes a fixed plate, which is hollow inside and has a movable plate vertically slidably arranged inside. A spring is fixedly arranged between the bottom of the movable plate and the workbench, and the top of the movable plate is fixedly connected to the corresponding second electric push rod.

[0017] Furthermore, the telescopic assembly includes two first electric push rods symmetrically fixedly arranged on the workbench, the output ends of the two first electric push rods are fixedly connected to the placement table, and the placement table is abutted and matched with the second electric push rods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A perspective view of the present invention; Figure 2 The front cross-sectional view of the placement table is hidden for the present invention; Figure 3 A three-dimensional diagram in which the workbench and the measuring instrument are hidden for the present invention; Figure 4 A three-dimensional diagram showing another perspective of the present invention without the workbench and the measuring instrument; Figure 5 It is a cross-sectional view of the piston cylinder of the present invention.

[0019] Description of reference numerals: 1, workbench; 2, measuring instrument; 3, detection head; 4, placing table; 5, telescopic rod; 501, fixed plate; 502, moving plate; 503, spring; 6, second electric push rod; 7, clamping plate; 8, supporting plate; 9, U-shaped plate; 10, piston cylinder; 11, first electric push rod; 12, cleaning plate; 13, cleaning cloth; 14, slide groove; 15, threaded rod; 16, fixed pipe; 17, wind hood; 18. Telescopic tube; 19. L-shaped rod; 20. Motor; 21. First rotating shaft; 22. Second rotating shaft; 23. Gear; 24. Rack; 25. First pulley; 26. Second pulley; 27. Belt; 28. Moving rod; 29. ​​Avoidance groove; 30. Piston rod; 31. First air outlet pipe; 32. First air inlet pipe; 33. Second air inlet pipe; 34. Second air outlet pipe; 35. Piston plate; 36. One-way valve. DETAILED DESCRIPTION

[0020] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0021] like Figure 1-Figure 2As shown, a non-contact optical lens thickness measuring instrument includes a workbench 1, a measuring instrument 2 is fixedly installed on the top of the workbench 1, and the measuring instrument 2 is a dispersion type conjugate focus measuring instrument 2. A detection head 3 is fixedly installed on the top of the measuring instrument 2, and the thickness of the optical lens is measured based on the dispersion confocal measurement principle, so that the thickness of the optical lens can be measured without contacting the optical lens. A receiving groove is provided on the top of the workbench 1, and a placement table 4 is slidably installed in the receiving groove for placing the optical lens. The placement table 4 is located directly below the detection head 3. A telescopic component is installed on the workbench 1 to drive the placement table 4 to move vertically. The telescopic component includes two first electric push rods 11 symmetrically fixedly arranged in the receiving groove on the top of the workbench 1. The two first electric push rods 11 are both arranged vertically, and the output ends of the two first electric push rods 11 are both fixedly matched with the bottom surface of the placement table 4.

[0022] like Figure 1 and Figure 2 As shown, a clamping assembly for fixing the lens is installed on the top of the workbench 1. The clamping assembly includes two telescopic rods 5 symmetrically fixedly installed on the top of the workbench 1. The telescopic rod 5 includes a fixed plate 501. The bottom end of the fixed plate 501 is fixedly matched with the top surface of the workbench 1. The fixed plate 501 is hollow inside, and a movable plate 502 is vertically slidably installed inside. The top of the movable plate 502 extends upward to the outside of the fixed plate 501 and is fixedly installed with a second electric push rod 6. The second electric push rod 6 is arranged horizontally. A clamping plate 7 is fixedly installed at the output end of the second electric push rod 6. The clamping plate 7 is arc-shaped. Protective pads are fixedly installed on the opposite sides of the two clamping plates 7. The protective pads are made of sponge or rubber materials and play a role in protecting the optical lens when clamping the optical lens. Two symmetrically arranged springs 503 are fixedly installed between the bottom of the movable plate 502 and the top surface of the workbench 1. One end of the spring 503 is fixedly matched with the bottom surface of the movable plate 502, and the other end of the spring 503 is fixedly matched with the top surface of the workbench 1. The spring 503 is provided to prevent the moving plate 502 from colliding with the workbench 1 when the moving plate 502 moves downward, thereby preventing the optical lens from falling off from between the two clamping plates 7 .

[0023] The top of the placement table 4 is integrally formed with a symmetrically arranged strip plate, and an arc groove is opened on the strip plate. The second electric push rod 6 is in contact with the arc groove corresponding to the top of the placement table 4, so that there is a certain gap between the clamping plate 7 and the placement table 4, so that when the clamping plate 7 clamps the optical lens, the lower surface of the optical lens is located below the bottom surface of the clamping plate 7, and the top surface of the optical lens is located above the top surface of the clamping plate 7, so that the cleaning plate 12 is in contact with the lens. At the same time, when the height of the optical lens needs to be adjusted, the first electric push rod 11 is started to drive the placement table 4 to move upward, and the placement table 4 is in contact with the second electric push rod 6 and drives the second electric push rod 6 to move upward, thereby adjusting the focal length of the optical lens relative to the detection head 3 for easy measurement.

[0024] like Figure 1-Figure 4 As shown, two support plates 8 arranged symmetrically on the left and right are fixedly installed on the top of the workbench 1, and a horizontally arranged U-shaped plate 9 is slidably installed between the two support plates 8, and the opening direction of the U-shaped plate 9 faces the placement table 4. Two symmetrically arranged cleaning plates 12 are installed one above and one below the U-shaped plate 9, and cleaning cloths 13 are fixedly bonded to the opposite sides of the two cleaning plates 12. The cleaning cloths 13 are made of suede, ultrafine fiber or microfiber material, which can effectively clean dust or oil on the optical lens without leaving scratches, so that the optical lens remains clear and bright.

[0025] like Figure 3 and Figure 4 As shown, a driving assembly for driving the U-shaped plate 9 to move horizontally is installed on the support plate 8, and the driving assembly includes a motor 20 and a moving rod 28. The moving rod 28 is slidably installed between the two support plates 8. The two opposite sides of the two support plates 8 are provided with a slide groove 14. The two ends of the moving rod 28 are respectively slidably installed with the corresponding slide groove 14, and one side of the moving rod 28 is fixedly installed with the U-shaped plate 9. The motor 20 is fixedly installed on the rear side of the right support plate 8. The slide groove 14 of the right support plate 8 is rotatably installed with a threaded rod 15 along its length direction. Both ends of the threaded rod 15 are light rod sections. The light rod sections at both ends of the threaded rod 15 are inserted into the support plate 8 on the right side and are rotatably installed with the support plate 8 on the right side. The output end of the motor 20 passes through the corresponding support plate 8 and is coaxially fixedly installed with the threaded rod 15. The threaded rod 15 passes through the moving rod 28 and is threadedly connected to the moving rod 28. When the clamping assembly clamps the lens, the driving assembly drives the two cleaning plates 12 to move horizontally through the U-shaped plate 9, and the two cleaning plates 12 clean the dust on the surface of the optical lens.

[0026] like Figure 4As shown, the U-shaped plate 9 is symmetrically mounted with rotating components that respectively drive the corresponding cleaning plates 12 to rotate, and the rotating components include a first rotating shaft 21 and a second rotating shaft 22, which are respectively rotatably mounted on the U-shaped plate 9, and a transmission component is installed between the first rotating shaft 21 and the second rotating shaft 22, and the transmission component includes a first pulley 25 and a second pulley 26, the first pulley 25 is fixedly sleeved on the first rotating shaft 21, the second pulley 26 is fixedly sleeved on the second rotating shaft 22, and a belt 27 is sleeved on the second pulley 26 and the first pulley 25. One end of the first rotating shaft 21 extends into the U-shaped plate 9 and is fixedly mounted with the center of the corresponding cleaning plate 12. A horizontally arranged rack 24 is fixedly installed on one side of the left support plate 8, and a gear 23 meshing with the rack 24 is fixedly sleeved on the second rotating shaft 22. When the U-shaped plate 9 moves horizontally, the gear 23 is driven to move through the second rotating shaft 22. At the same time, the gear 23 is meshed with the rack 24 to drive the second rotating shaft 22 to rotate. The second rotating shaft 22 drives the first rotating shaft 21 to rotate through the transmission assembly, and the first rotating shaft 21 drives the cleaning plate 12 to rotate. The cleaning plate 12 drives the cleaning cloth 13 to rotate while wiping the lens, thereby improving the cleaning effect of the lens.

[0027] like Figure 3 and Figure 4 As shown, two symmetrically arranged fixed tubes 16 are fixedly installed on the top of the U-shaped plate 9, one on the left and one on the right. The bottom ends of the fixed tubes 16 extend to the interior of the U-shaped plate 9 and are fixedly installed with a wind hood 17. The top ends of the fixed tubes 16 are fixedly connected with a telescopic tube 18, which is a corrugated tube. A blowing assembly is fixedly installed on the top of the support plate 8 on the right side, and the blowing assembly is connected to the telescopic tube 18.

[0028] like Figure 4 and Figure 5As shown, the blowing assembly includes a piston cylinder 10 and a piston plate 35. The piston cylinder 10 is fixedly mounted on the top of the right support plate 8. The piston plate 35 is sealed and slidably mounted inside the piston cylinder 10. A piston rod 30 is fixedly mounted on one side of the piston plate 35. One end of the piston rod 30 extends to the outside of the piston cylinder 10 and is sealed and slidably matched with the piston cylinder 10. The end of the piston rod 30 located outside the piston cylinder 10 is fixedly connected to the moving rod 28. A avoidance groove 29 is opened on the top of the right support plate 8 along its length direction. The avoidance groove 29 is connected to the slide groove 14 on the right support plate 8. An L-shaped rod 19 is fixedly mounted on the moving rod 28. The L-shaped rod 19 passes through the avoidance groove 29 upwards and is fixedly mounted with the piston rod 30. A first air outlet pipe 31 and a first air inlet pipe 32 connected to the interior of the piston cylinder 10 are fixedly mounted at the front end of the piston cylinder 10. A second air outlet pipe 34 and a second air inlet pipe 33 connected to the interior of the piston cylinder 10 are fixedly mounted at the rear end of the piston cylinder 10. One-way valves 36 are installed on the first air outlet pipe 31, the first air inlet pipe 32, the second air outlet pipe 34 and the second air inlet pipe 33. The first air outlet pipe 31 is fixedly connected to the corresponding telescopic pipe 18, and the second air outlet pipe 34 is fixedly connected to the corresponding telescopic pipe 18. When the cleaning plate 12 moves to wipe the dust on the surface of the optical lens, the moving rod 28 drives the piston plate 35 to move through the piston rod 30 at the same time. The piston plate 35 moves to send the gas in the piston cylinder 10 into the corresponding wind cover 17, so that the dust on the surface of the optical lens is easier to be separated from the optical lens by blowing air through the wind cover 17, further improving the cleaning effect of the lens.

[0029] Working principle: In the initial state, the placement table 4 is in contact with the second electric push rod 6 , the two clamping plates 7 are located between the two cleaning plates 12 , and the piston plate 35 is located at the inner rear side of the piston cylinder 10 .

[0030] When measuring the thickness of the optical lens, the optical lens is placed on the placement table 4. At this time, the upper surface of the optical lens is higher than the upper surface of the clamping plate 7, and the lower surface of the optical lens is lower than the lower surface of the clamping plate 7. Then start the two second electric push rods 6, and the two second electric push rods 6 drive the two clamping plates 7 to move toward each other, so that the two clamping plates 7 clamp and fix the optical lens. Then wipe the dust on the optical lens, start the first electric push rod 11, and the first electric push rod 11 drives the placement table 4 to move downward to prevent the placement table 4 from hindering the movement of the U-shaped plate 9. Start the motor 20, the motor 20 drives the threaded rod 15 to rotate, the threaded rod 15 drives the moving rod 28 to move horizontally along the slide 14, the moving rod 28 drives the U-shaped plate 9 to move toward the direction of the optical lens, the movement of the U-shaped plate 9 drives the two cleaning plates 12 to move, and the two cleaning plates 12 move horizontally to drive the cleaning cloth 13 to contact the upper and lower surfaces of the optical lens respectively, so as to clean the dust on the upper and lower surfaces of the optical lens. Since the fixed tube 16 is connected to the telescopic tube 18 , the length of the telescopic tube 18 is expanded and contracted along with the movement of the U-shaped plate 9 , and thus the fixed tube 16 will not hinder the movement of the U-shaped plate 9 .

[0031] The U-shaped plate 9 moves while driving the second rotating shaft 22 to move, and the second rotating shaft 22 moves while driving the gear 23 to move, and the gear 23 moves while engaging with the rack 24 to drive the second rotating shaft 22 to rotate, and the second rotating shaft 22 drives the second pulley 26 to rotate, and the second pulley 26 drives the first pulley 25 to rotate through the belt 27, and the first pulley 25 drives the first rotating shaft 21 to rotate, and the first rotating shaft 21 drives the corresponding cleaning plate 12 to rotate, so that the cleaning plate 12 moves to clean the optical lens while rotating, and the cleaning plate 12 drives the cleaning cloth 13 to rotate, thereby improving the cleaning effect of the cleaning cloth 13 on the optical lens.

[0032] When the moving rod 28 moves, it also drives the L-shaped rod 19 to move along the avoidance groove 29, the L-shaped rod 19 drives the piston rod 30 to move, and the piston rod 30 drives the piston plate 35 to move. At this time, the one-way valve 36 in the first air outlet pipe 31 and the second air inlet pipe 33 is opened, and the one-way valve 36 in the second air outlet pipe 34 and the first air inlet pipe 32 is closed, so that the piston plate 35 moves to squeeze the gas in the piston cylinder 10 through the first air outlet pipe 31, and then the gas enters the wind hood 17 on the left through the corresponding telescopic tube 18 and the fixed tube 16, so that when the cleaning cloth 13 is cleaning the optical lens, the gas blown out of the wind hood 17 makes it easier for dust on the surface of the optical lens to separate from the optical lens, further improving the cleaning effect of the optical lens.

[0033] When the U-shaped plate 9 moves horizontally to the maximum limit, the cleaning plate 12 cleans the optical lens, and then controls the motor 20 to reverse. The motor 20 drives the moving rod 28 to move in the opposite direction through the threaded rod 15, and the moving rod 28 drives the cleaning cloth 13 on the cleaning plate 12 through the U-shaped plate 9 to continue cleaning the surface of the optical lens. At this time, the one-way valve 36 in the first air outlet pipe 31 and the second air inlet pipe 33 is closed, and the one-way valve 36 in the second air outlet pipe 34 and the first air inlet pipe 32 is opened, so that when the piston plate 35 moves in opposite directions, the gas in the piston cylinder 10 is squeezed out through the second air outlet pipe 34, and then the gas enters the wind hood 17 on the right side through the corresponding telescopic tube 18 and the fixed tube 16, so that when the cleaning cloth 13 on the cleaning plate 12 reciprocates to clean the optical lens, air can be blown to the optical lens from the wind hood 17, which is conducive to the dust on the surface of the optical lens to be separated from the optical lens.

[0034] When the height of the lens needs to be adjusted, the first electric push rod 11 is started to drive the placement table 4 to move upward. The placement table 4 abuts against the second electric push rod 6 and drives the second electric push rod 6 to move upward. The second electric push rod 6 drives the optical lens upward through the clamping plate 7, thereby adjusting the focal length of the lens relative to the detection head 3 for easy measurement.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A non-contact optical lens thickness measuring instrument, comprising a workbench (1), characterized in that: A measuring instrument (2) is fixedly arranged on the top of the workbench (1), a detection head (3) is arranged on the measuring instrument (2), a placing table (4) is arranged on the top of the workbench (1), a telescopic component for driving the placing table (4) to move vertically is arranged on the workbench (1), two symmetrically arranged supporting plates (8) are fixedly arranged on the top of the workbench (1), a horizontally arranged U-shaped plate (9) is slidably arranged between the two supporting plates (8), the opening direction of the U-shaped plate (9) faces the placing table (4), two symmetrically arranged cleaning plates (12) are arranged one above and one below the U-shaped plate (9), a driving component for driving the U-shaped plate (9) to move horizontally is arranged on the supporting plate (8), and a clamping component for fixing the lens is arranged on the top of the workbench (1), after the clamping component clamps the lens, the driving component drives the two cleaning plates (12) to move horizontally through the U-shaped plate (9), and the two cleaning plates (12) clean dust on the surface of the lens.

2. The non-contact optical lens thickness measuring instrument according to claim 1, characterized in that: The U-shaped plate (9) is symmetrically provided with rotating components for driving the corresponding cleaning plates (12) to rotate respectively. The rotating components include a first rotating shaft (21) and a second rotating shaft (22). The first rotating shaft (21) and the second rotating shaft (22) are respectively rotatably provided on the U-shaped plate (9). A transmission component is provided between the first rotating shaft (21) and the second rotating shaft (22). One end of the first rotating shaft (21) is fixedly connected to the center of the corresponding cleaning plate (12). A horizontally arranged rack (24) is fixedly provided on one of the support plates (8). A gear (23) meshing with the rack (24) is fixedly sleeved on the second rotating shaft (22). When the U-shaped plate (9) moves horizontally, the gear (23) is driven to move through the second rotating shaft (22). At the same time, the gear (23) meshes with the rack (24) to drive the second rotating shaft (22) to rotate. The second rotating shaft (22) drives the first rotating shaft (21) to rotate through the transmission component.

3. The non-contact optical lens thickness measuring instrument according to claim 2, characterized in that: The transmission assembly comprises a first pulley (25) and a second pulley (26), wherein the first pulley (25) is fixedly sleeved on the first rotating shaft (21), and the second pulley (26) is fixedly sleeved on the second rotating shaft (22), and a belt (27) is sleeved on the second pulley (26) and the first pulley (25).

4. The non-contact optical lens thickness measuring instrument according to claim 1, characterized in that: The driving assembly comprises a motor (20) and a moving rod (28), wherein the moving rod (28) is slidably arranged between two support plates (8), and the moving rod (28) is fixedly connected to the U-shaped plate (9), the motor (20) is fixedly arranged on one of the support plates (8), and a threaded rod (15) is fixedly arranged at the output end of the motor (20), and the threaded rod (15) passes through the moving rod (28) and is threadedly connected to the moving rod (28).

5. The non-contact optical lens thickness measuring instrument according to claim 4, characterized in that: A fixed tube (16) is symmetrically fixedly arranged on the U-shaped plate (9), one end of the fixed tube (16) extends into the interior of the U-shaped plate (9) and is fixedly provided with a wind hood (17), and the other end of the fixed tube (16) is fixedly connected to a telescopic tube (18), wherein a blowing assembly is fixedly arranged on one of the support plates (8), and the blowing assembly is connected to the telescopic tube (18).

6. The non-contact optical lens thickness measuring instrument according to claim 5, characterized in that: The blowing assembly comprises a piston cylinder (10) and a piston plate (35), wherein the piston cylinder (10) is fixedly arranged on one of the support plates (8), the piston plate (35) is slidably arranged inside the piston cylinder (10), a piston rod (30) is fixedly arranged on one side of the piston plate (35), one end of the piston rod (30) extends to the outside of the piston cylinder (10) and is fixedly connected to the moving rod (28), a first air outlet pipe (31) and a first air inlet pipe (32) are fixedly arranged on one end of the piston cylinder (10), and a second air outlet pipe (34) and a second air inlet pipe (33) are fixedly arranged on the other end of the piston cylinder (10), and a one-way valve (36) is arranged on the first air outlet pipe (31), the first air inlet pipe (32), the second air outlet pipe (34) and the second air inlet pipe (33), the first air outlet pipe (31) is fixedly connected to the corresponding telescopic pipe (18), and the second air outlet pipe (34) is fixedly connected to the corresponding telescopic pipe (18).

7. The non-contact optical lens thickness measuring instrument according to claim 1, characterized in that: The clamping assembly comprises two telescopic rods (5) symmetrically fixedly arranged on the top of the workbench (1), second electric push rods (6) are fixedly arranged on opposite sides of the two telescopic rods (5), and a clamping plate (7) is fixedly arranged on the output end of the second electric push rod (6).

8. The non-contact optical lens thickness measuring instrument according to claim 7, characterized in that: A protective pad is fixedly provided on one side of the clamping plate (7).

9. The non-contact optical lens thickness measuring instrument according to claim 7, characterized in that: The telescopic rod (5) comprises a fixed plate (501), the fixed plate (501) is hollow inside and a movable plate (502) is vertically slidably arranged inside the fixed plate (501), a spring (503) is fixedly arranged between the bottom of the movable plate (502) and the workbench (1), and the top of the movable plate (502) is fixedly connected to the corresponding second electric push rod (6).

10. The non-contact optical lens thickness measuring instrument according to claim 7, characterized in that: The telescopic assembly comprises two first electric push rods (11) symmetrically fixedly arranged on the workbench (1), the output ends of the two first electric push rods (11) being fixedly connected to the placement table (4), and the placement table (4) being in abutment with the second electric push rods (6).

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