Lens cleaning equipment for optical lens production

By designing a support base, guide slider, and servo motor-driven lens clamping assembly, multiple lenses can be cleaned and dried simultaneously, solving the problem of low efficiency in existing technologies and achieving efficient operation of cleaning and drying both sides of the lenses at the same time.

CN224114701UActive Publication Date: 2026-04-14SONGLIN OPTOELECTRONICS TECH (HUBEI) CO LTD
View PDF 1 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-05-08
Publication Date
2026-04-14

AI Technical Summary

Technical Problem

Existing optical lens cleaning equipment can only clean one lens at a time, which is inefficient and makes it difficult to clean both sides of the lens at the same time, making the operation cumbersome.

Method used

The design incorporates a support base, guide slider, servo motor, and multiple lens clamping components to enable simultaneous cleaning and drying of multiple lenses. Through the cross-operation of the cleaning and drying chambers, multiple water and air nozzles are used to clean and dry both sides of the lenses respectively.

Benefits of technology

It improves the efficiency of lens cleaning and drying, simplifies the operation process, avoids lens flipping, and significantly improves cleaning efficiency and effect.

✦ Generated by Eureka AI based on patent content.

Smart Images

  • Figure CN224114701U_ABST
    Figure CN224114701U_ABST
Patent Text Reader

Abstract

The utility model discloses lens cleaning equipment for optical lens production, which comprises a supporting base, a guide sliding groove is formed in the top of the supporting base, a guide sliding block driven by a servo motor is connected in the guide sliding groove in a sliding manner, and lens clamping assemblies are arranged on the left side and the right side of the top of the guide sliding block; the lens clamping assembly comprises a fixing plate fixed to the guide sliding block, fixing rods fixed to the two sides of the top of the fixing plate and limiting plates fixed to the tops of the fixing rods. According to the lens cleaning device, multiple lenses can be cleaned at the same time, the cleaning efficiency is improved, the lenses are clamped and fixed in a reset spring rebounding mode, and the cleaning efficiency is improved. Compared with bolt fixing in the prior art, the lens cleaning device is more convenient to use and faster in operation, the cleaning bin and the drying bin which are designed in a matched mode can achieve crossed cleaning and drying, in other words, when the lens on one side of the top of the guide sliding block is cleaned, the lens on the other side of the top of the guide sliding block can be dried, and therefore the cleaning efficiency of the lens is remarkably improved.
Need to check novelty before this filing date? Find Prior Art

Description

Technical Field

[0001] This utility model relates to the field of lens manufacturing cleaning technology, specifically a lens cleaning device for optical lens manufacturing. Background Technology

[0002] After optical lenses are manufactured, they need to be cleaned to remove impurities adhering to their surface.

[0003] A Chinese patent application (CN202420677222.6) describes a lens cleaning device for optical lens production, which includes: "A housing with a fixed bracket installed inside its cavity. A geared motor is installed at the bottom of the fixed bracket. A cleaning hole is provided at the top of the housing, and a cleaning assembly is installed at the top of the cleaning hole. A water blowing hole is provided on the left side of the cleaning hole. A water pump draws cleaning fluid from the cleaning fluid tank into a spray pipe through a water supply pipe, and then sprays it out through a nozzle to clean the dirty water on the lens. This solves the problem of lens surface damage caused by manual cleaning. The geared motor rotates the connecting parts, retaining ring, and lens. After the lens is cleaned by the cleaning assembly, it is then cleaned by the clean water assembly, which greatly saves manpower."

[0004] A search of the aforementioned patents revealed that while this technology can effectively clean optical lenses, our simulations showed that it still has certain shortcomings:

[0005] First, the above-mentioned retrieval technology can only clean one optical lens at a time. It requires waiting for the current lens to be cleaned before the next lens can be cleaned. Furthermore, it requires tightening bolts when installing and removing lenses, which is cumbersome and inefficient.

[0006] Second, the above-mentioned retrieval technology only has a good cleaning effect on one side of the lens, while the other side is often difficult to clean well. If it is necessary to clean the other side of the lens, the lens can only be flipped over manually, which will undoubtedly increase the difficulty of operation and prolong the cleaning time of the lens.

[0007] Therefore, in response to the technical problems mentioned above in the existing technology, we have designed a lens cleaning device for optical lens production. Utility Model Content

[0008] To overcome the shortcomings mentioned above, this utility model aims to provide a technical solution that can solve the above problems.

[0009] To achieve the above objectives, this utility model provides the following technical solution: a lens cleaning device for optical lens production, comprising a support base, a guide groove on the top of the support base, a guide slider driven by a servo motor slidably connected in the guide groove, and lens clamping assemblies on both the left and right sides of the top of the guide slider; the lens clamping assembly includes a fixing plate fixed to the guide slider, fixing rods fixed to both sides of the top of the fixing plate, a limiting plate fixed to the top of the fixing rods, a movable plate movably sleeved on the fixing rods, and a return spring sleeved on the fixing rods; positioning grooves are provided on the top of the fixing plate and the bottom of the movable plate, and overflow grooves are provided on both sides of the positioning grooves; a cleaning chamber is fixed to one side of the top of the support base, and a drying chamber is fixed to the other side of the top of the support base, and the guide slider passes through the bottom of the cleaning chamber and the drying chamber.

[0010] As a further embodiment of this utility model: a second fixing frame and a first fixing frame are respectively fixed to the bottom of the left and right sides of the support base. The servo motor is mounted on the first fixing frame. A lead screw is driven through the power output shaft of the servo motor, and the other end of the lead screw is driven through the second fixing frame. The lead screw is also threaded through the guide slider.

[0011] As a further embodiment of this utility model: the lens clamping assembly has three sets on both sides of the top of the guide slider, which are far apart from each other; the two sides of the movable plate are respectively movably sleeved with two fixed rods; the bottom of the reset spring is fixed to the top of the movable plate; and the top of the reset spring is fixed to the bottom of the limiting plate.

[0012] As a further embodiment of this utility model: a suction water pump is installed on the top of the cleaning chamber, and the water outlet of the suction water pump is connected to a branch water pipe through a pipeline. The two ends of the branch water pipe extend to the front and rear sides of the cleaning chamber respectively and are connected to water inlet pipes. One end of the water inlet pipe is fixedly inserted into the interior of the cleaning chamber and connected to a water outlet pipe. Multiple water nozzles are equidistantly connected to one side of the water outlet pipe.

[0013] As a further embodiment of this utility model, it also includes a water storage tank, the top of which is provided with a connecting pipe and a water supply pipe, and the connecting pipe is connected to the water inlet of the suction pump through a pipeline.

[0014] As a further embodiment of this utility model: an inclined groove is provided at the top of the support base and at the position corresponding to the cleaning chamber. The inclined groove is connected to the guide slide. The inner bottom wall of the guide slide is provided with perforations at equal intervals. The inner cavity of the support base is provided with a water accumulation tank that communicates with the perforations. The bottom of the water accumulation tank is connected to a drain pipe that penetrates the support base.

[0015] As a further embodiment of this utility model: a drying fan is installed on the top of the drying chamber, and the air outlet of the drying fan is connected to a diversion duct through a pipe. The two ends of the diversion duct extend to the front and rear sides of the drying chamber respectively and are connected to an air inlet duct. One end of the air inlet duct is fixedly inserted into the interior of the drying chamber and is connected to an air outlet duct. Multiple air outlet nozzles with the same height as the water outlet nozzles are equidistantly connected to one side of the air outlet duct.

[0016] As a further embodiment of this utility model: on both the left and right sides of the cleaning chamber and the drying chamber, at positions corresponding to the guide slide groove, there are openings to facilitate the entry and exit of the lens clamping assembly.

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

[0018] 1. In this application, by designing a support base, guide slider, servo motor, and multiple lens clamping components, multiple lenses can be installed on multiple lens clamping components simultaneously, enabling simultaneous cleaning of multiple lenses and improving cleaning efficiency. Furthermore, the lenses are clamped and fixed by a return spring, which is more convenient and faster than the bolt fixing of existing technologies. In addition, the designed cleaning chamber and drying chamber allow for the cross-processing of cleaning and drying. That is, while the lens on one side of the guide slider is being cleaned, the lens on the other side can be dried, thereby significantly improving the cleaning efficiency of the lenses.

[0019] Second, in this application, through the designed cleaning chamber and drying chamber, there are multiple water nozzles on both sides of the cleaning chamber and multiple air nozzles on both sides of the drying chamber, so that both sides of the lens can be cleaned or dried at the same time in one process, which can avoid the lens being flipped later, thereby reducing the difficulty of lens cleaning operation and improving lens cleaning efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of this utility model;

[0021] Figure 2 This is a three-dimensional structural diagram of the guide slider of this utility model;

[0022] Figure 3 This is a three-dimensional structural diagram of the lens clamping assembly of this utility model;

[0023] Figure 4 This is a side sectional view of the cleaning chamber of this utility model;

[0024] Figure 5 This is a side sectional view of the drying chamber of this utility model;

[0025] Figure 6This is a three-dimensional structural diagram of the water storage tank of this utility model.

[0026] The reference numerals and names in the figure are as follows:

[0027] 1. Support base; 2. Fixing frame one; 3. Fixing frame two; 4. Servo motor; 401. Lead screw; 5. Guide groove; 501. Perforation; 6. Guide slider; 7. Cleaning chamber; 8. Drying chamber; 9. Suction pump; 10. Diversion water pipe; 11. Inlet pipe; 1101. Outlet pipe; 1102. Water nozzle; 12. Drying fan; 13. Diversion air duct; 14. Inlet air duct; 14 01. Air outlet duct; 1402. Air outlet nozzle; 15. Compartment opening; 16. Drain pipe; 17. Inclined groove; 18. Water collection groove; 19. Lens clamping assembly; 1901. Fixing plate; 1902. Fixing rod; 1903. Movable plate; 1904. Return spring; 1905. Limiting plate; 20. Positioning groove; 21. Overflow groove; 22. Water storage tank; 23. Connecting pipe; 24. Water supply pipe. Detailed Implementation

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

[0029] Please see Figures 1-6 A lens cleaning device for optical lens production includes a support base 1. A guide groove 5 is formed on the top of the support base 1. A guide slider 6 driven by a servo motor 4 is slidably connected in the guide groove 5. Slide strips are integrally formed on both sides of the guide slider 6. The inner wall of the guide groove 5 also has grooves on both sides, with the slide strips placed in the grooves to ensure the stability of the guide slider 6 when sliding in the guide groove 5. Lens clamping assemblies 19 are provided on the left and right sides of the top of the guide slider 6. The lens clamping assembly 19 includes a fixing plate 1901 fixed to the guide slider 6, and lenses fixed to the top sides of the fixing plate 1901. The system includes a fixed rod 1902, a limiting plate 1905 fixed to the top of the fixed rod 1902, a movable plate 1903 movably sleeved on the fixed rod 1902, and a return spring 1904 sleeved on the fixed rod 1902. Positioning grooves 20 are provided on the top of the fixed plate 1901 and the bottom of the movable plate 1903. Overflow grooves 21 are provided on both sides of the positioning grooves 20, allowing water stains entering the positioning grooves 20 to drain easily. A cleaning chamber 7 is fixed to one side of the top of the support base 1, and a drying chamber 8 is fixed to the other side of the top of the support base 1. A guide slider 6 passes through the bottom of the cleaning chamber 7 and the drying chamber 8.

[0030] Please see Figure 1 In this embodiment, the bottom of the left and right sides of the support base 1 is respectively fixed with a second fixing frame 3 and a first fixing frame 2. The servo motor 4 is mounted on the first fixing frame 2. The power output shaft of the servo motor 4 is connected to a lead screw 401, and the other end of the lead screw 401 is connected to the second fixing frame 3. The lead screw 401 is also threadedly connected to the guide slider 6.

[0031] Specifically, the first mounting bracket 2 is used for the installation of the servo motor 4 to ensure the stability of the servo motor 4, and the second mounting bracket 3 is used for the connection of the other end of the lead screw 401 to ensure the stability of the lead screw 401 during rotation and to provide a stable transmission force to the guide slider 6.

[0032] Please see Figure 2 and Figure 3 In this embodiment, the lens clamping assembly 19 is provided with three sets on both sides of the top of the guide slider 6, and they are far apart from each other. The two sides of the movable plate 1903 are respectively movably sleeved with two fixed rods 1902. The bottom of the return spring 1904 is fixed to the top of the movable plate 1903, and the top of the return spring 1904 is fixed to the bottom of the limiting plate 1905.

[0033] Specifically, the movable plate 1903 moves on the fixed rod 1902. The fixed rod 1902 provides good limiting guidance for the movable plate 1903. When the movable plate 1903 moves upward, it can compress the return spring 1904, thereby increasing the distance between it and the fixed plate 1901, which facilitates the clamping of the lens. At the same time, it can clamp lenses of different sizes. When the movable plate 1903 moves downward, it can receive the restoring force of the return spring 1904, thereby pushing the movable plate 1903 and stabilizing the lens clamping between the movable plate 1903 and the fixed plate 1901.

[0034] Please see Figure 1 , Figure 4 and Figure 6In this embodiment, a suction water pump 9 is installed on the top of the cleaning chamber 7. The outlet of the suction water pump 9 is connected to a branch water pipe 10 through a pipe. The two ends of the branch water pipe 10 extend to the front and rear sides of the cleaning chamber 7 respectively and are connected to inlet water pipes 11. One end of the inlet water pipe 11 is fixedly inserted into the interior of the cleaning chamber 7 and is connected to an outlet water pipe 1101. Multiple water nozzles 1102 are equidistantly connected to one side of the outlet water pipe 1101. A water storage tank 22 is also included, which can be installed near the cleaning chamber 7. On one side, the top of the water storage tank 22 is provided with a connecting pipe 23 and a water supply pipe 24. The connecting pipe 23 is connected to the water inlet of the suction pump 9 through a pipe. An inclined groove 17 is also provided on the top of the support base 1 at a position corresponding to the cleaning chamber 7. The inclined groove 17 is connected to the guide slide 5. The inner bottom wall of the guide slide 5 is provided with perforations 501 at equal intervals. The inner cavity of the support base 1 is provided with a water accumulation trough 18 that communicates with the perforations 501. The bottom of the water accumulation trough 18 is connected to a drain pipe 16 that penetrates the support base 1.

[0035] Specifically, multiple water nozzles 1102 can clean multiple lenses, improving cleaning efficiency and effectiveness. Since wastewater is generated during cleaning, it can flow from the inclined groove 17 into the guide chute 5, and then enter the water collection tank 18 through the perforation 501 at the bottom of the guide chute 5. Finally, it is discharged through the drain pipe 16 connected to the water collection tank 18 for discharge or recycling. The water storage tank 22 has a water supply pipe 24, which can be connected to an external water pump to fill the water storage tank 22 with water, ensuring a continuous flow of cleaning water.

[0036] Please see Figure 1 and Figure 5 In this embodiment, a drying fan 12 is installed on the top of the drying chamber 8. The air outlet of the drying fan 12 is connected to a diversion duct 13 through a pipe. Both ends of the diversion duct 13 extend to the front and rear sides of the drying chamber 8 and are connected to an air inlet duct 14. One end of the air inlet duct 14 is fixedly inserted into the interior of the drying chamber 8 and is connected to an air outlet duct 1401. Multiple air outlet nozzles 1402 with the same height as the water outlet nozzles 1102 are equidistantly connected to one side of the air outlet duct 1401.

[0037] Specifically, when the lens enters the drying chamber 8, the design of multiple air nozzles 1402 allows for simultaneous air blowing and drying of multiple lenses, ensuring the drying efficiency of the lens. The drying fan 12 can be a cold air fan or a hot air fan, which can be selected according to the actual situation.

[0038] Please see Figure 1 In this embodiment, the cleaning chamber 7 and the drying chamber 8 are provided with openings 15 on the left and right sides, corresponding to the positions of the guide slide 5, to facilitate the entry and exit of the lens clamping assembly 19.

[0039] Specifically, by openings 15 in the cleaning chamber 7 and the drying chamber 8, with the height of the openings 15 being higher than that of the lens clamping assembly 19, the lens clamping assembly 19 can be easily inserted and removed, ensuring a smooth cleaning and drying process.

[0040] When using:

[0041] First, prepare the lens to be cleaned. Drive the right side of the guide slider 6 to the far right of the support base 1 and make it fit against the fixing frame 2, so that the multiple lens clamping assemblies 19 on the guide slider 6 are exposed. Then, lift the movable plate 1903 upward, so that the movable plate 1903 compresses the return spring 1904 and expands the distance between it and the fixing plate 1901. Then, place the lens between the movable plate 1903 and the fixing plate 1901. Release the movable plate 1903. The movable plate 1903 is pushed downward by the return spring 1904, thereby clamping the lens between the fixing plate 1901 and the movable plate 1903. The top edge and bottom edge of the lens enter the positioning groove 20 at the bottom of the movable plate 1903 and the top of the fixing plate 1901, respectively. The positioning groove 20 is used to limit and stabilize the edge of the lens. When the lens is installed on the multiple lens clamping assemblies 19, the cleaning and drying of the lens can begin.

[0042] The servo motor 4 is started, driving the lead screw 401 to rotate. The rotation of the lead screw 401 causes the guide slider 6 to slide in the guide groove 5, which in turn causes the multiple lens clamping assemblies 19 located on the top left side of the guide slider 6 to first enter the cleaning chamber 7. The cleaning water in the water tank 22 is pumped into the suction pump 9 by starting the suction pump 9, and then transported through the diversion pipe 10 and the inlet pipe 11 to the two outlet pipes 1101. Finally, water is sprayed out through the water nozzles 1102 onto the lenses clamped by the lens clamping assemblies 19. After a period of cleaning, the servo motor 4 can be started again to continue driving the guide slider 6, so that the cleaned lenses on the guide slider 6 (top left side) enter the drying chamber 8, while the uncleaned lenses (top right side) immediately enter the cleaning chamber 7. The lens on the top right side of the guide slider 6 is cleaned in the cleaning chamber 7. The lens in the drying chamber 8 is drawn by the drying fan 12 and the air is delivered to the split air duct 13, the air inlet duct 14 and the air outlet duct 1401. Finally, the air outlet nozzle 1402 blows dry air onto the lens to dry the water stains on the lens surface. After the lens on the top left side of the guide slider 6 has been dried in the drying chamber 8 for a period of time, the lens on the top right side of the guide slider 6 has also been cleaned. The servo motor 4 can be started to transfer the lens on the top left side of the guide slider 6 (which has been cleaned and dried) out of the drying chamber 8. The cleaned and dried lens can then be removed (or it can be removed together with the lens on the top right side of the guide slider 6 later). The lens on the top right side of the guide slider 6 can then enter the drying chamber 8 for drying.

[0043] Since the lens on the top left side of the guide slider 6 has been removed after cleaning and drying, when the lens on the top right side of the guide slider 6 has also been dried, the servo motor 4 can be used to drive the entire guide slider 6 to the far left of the support base 1, thereby exposing all the lens clamping components 19 on the top of the guide slider 6, and finally removing the lens on the top right side of the guide slider 6 that has been cleaned and dried.

[0044] Finally, by reversing the servo motor 4, the guide slider 6 is driven to the far right of the support base 1, and a new lens that needs to be cleaned and dried is installed on the guide slider 6. The above steps are repeated to complete the high-efficiency cleaning of the lens.

[0045] In summary, when the lens mounted on the top left side of the guide slider 6 is drying, the lens on its top right side can be cleaned. When the lens on its top right side is drying, the lens on its top left side can be removed first. This allows the lenses mounted on the top left and right sides of the guide slider 6 to be cleaned and dried alternately, improving the cleaning and drying efficiency of the lenses.

[0046] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A lens cleaning device for optical lens production, characterized in that, Includes a support base (1), the top of which is provided with a guide groove (5), and a guide slider (6) driven by a servo motor (4) is slidably connected in the guide groove (5). Lens clamping assemblies (19) are provided on the left and right sides of the top of the guide slider (6). The lens clamping assembly (19) includes a fixing plate (1901) fixed on the guide slider (6), fixing rods (1902) fixed on both sides of the top of the fixing plate (1901), a limiting plate (1905) fixed on the top of the fixing rods (1902), a movable plate (1903) movably sleeved on the fixing rods (1902), and a return spring (1904) sleeved on the fixing rods (1902). The top of the fixed plate (1901) and the bottom of the movable plate (1903) are provided with positioning grooves (20), and overflow grooves (21) are provided on both sides of the positioning grooves (20). A cleaning chamber (7) is fixed on one side of the top of the support base (1), and a drying chamber (8) is fixed on the other side of the top of the support base (1). The guide slider (6) passes through the bottom of the cleaning chamber (7) and the drying chamber (8).

2. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, The bottom of the left and right sides of the support base (1) is fixed with a second fixing frame (3) and a first fixing frame (2) respectively. The servo motor (4) is mounted on the first fixing frame (2). The power output shaft of the servo motor (4) is connected to a lead screw (401) and the other end of the lead screw (401) is connected to the second fixing frame (3). The lead screw (401) is also threadedly connected to the guide slider (6).

3. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, The lens clamping assembly (19) has three sets of clamps on both sides of the top of the guide slider (6), which are far apart from each other. The two sides of the movable plate (1903) are movably sleeved with two fixed rods (1902). The bottom of the return spring (1904) is fixed to the top of the movable plate (1903), and the top of the return spring (1904) is fixed to the bottom of the limiting plate (1905).

4. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, A suction water pump (9) is installed on the top of the cleaning chamber (7). The outlet of the suction water pump (9) is connected to a branch water pipe (10) through a pipe. Both ends of the branch water pipe (10) extend to the front and rear sides of the cleaning chamber (7) and are connected to an inlet water pipe (11). One end of the inlet water pipe (11) is fixedly inserted into the interior of the cleaning chamber (7) and is connected to an outlet water pipe (1101). Multiple water nozzles (1102) are equidistantly connected to one side of the outlet water pipe (1101).

5. The lens cleaning equipment for optical lens production according to claim 4, characterized in that, It also includes a water storage tank (22), and the top of the water storage tank (22) is provided with a connecting pipe (23) and a water supply pipe (24). The connecting pipe (23) is connected to the water inlet of the suction pump (9) through a pipe.

6. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, An inclined groove (17) is provided at the top of the support base (1) and at the position corresponding to the cleaning chamber (7). The inclined groove (17) is connected to the guide slide (5). The inner bottom wall of the guide slide (5) is provided with perforations (501) at equal intervals. The inner cavity of the support base (1) is provided with a water collection tank (18) that communicates with the perforations (501). The bottom of the water collection tank (18) is connected to a drain pipe (16) that penetrates the support base (1).

7. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, A drying fan (12) is installed on the top of the drying chamber (8). The air outlet of the drying fan (12) is connected to a branch duct (13) through a pipe. Both ends of the branch duct (13) extend to the front and rear sides of the drying chamber (8) and are connected to an air inlet duct (14). One end of the air inlet duct (14) is fixedly inserted into the interior of the drying chamber (8) and is connected to an air outlet duct (1401). Multiple air outlet nozzles (1402) of the same height as the water outlet nozzles (1102) are equidistantly connected to one side of the air outlet duct (1401).

8. The lens cleaning equipment for optical lens production according to claim 1, characterized in that, The cleaning chamber (7) and the drying chamber (8) are provided with openings (15) on the left and right sides, corresponding to the positions of the guide slide (5), to facilitate the entry and exit of the lens clamping assembly (19).

Citation Information

Patent Citations

  • Lens cleaning equipment for optical lens production

    CN222153305U