Optical lens coating device and coating method thereof

Abstract

The invention discloses an optical lens coating device and a coating method thereof, and relates to the technical field of optical lens coating. The device comprises a supporting column, the top of the supporting column is fixedly connected with a coating device shell, and the outer side of the coating device shell is rotationally connected with a device door; an auxiliary assembly used for simplifying the coating process and enabling a coating material to be more evenly distributed on the surface of the lens is arranged in the coating device shell, and an anti-falling assembly used for preventing the optical lens from falling in the overturning process and improving the production flexibility is arranged outside the auxiliary assembly. Through cooperative use of a first cylinder, a sliding column, a groove and a triangular block in the auxiliary assembly, the placement frame is turned over in the optical lens coating process, the triangular block is located in the groove, the triangular block and the groove are combined to enable the groove to form a triangular sliding way with a convex groove on the outer surface of a fixed cylinder, the triangular sliding way enables the sliding column to turn over inside, and therefore the optical lens coating effect is improved. And the overturning lens can ensure that the two surfaces can uniformly receive the coating material.

Description

Technical Field

[0001] The present invention relates to the technical field of optical lens coating, and in particular to an optical lens coating device and a coating method thereof. Background Art

[0002] An optical lens coating device is a device specially designed to deposit a thin film on the surface of an optical lens. These devices are commonly used to manufacture various optical components, such as eyeglass lenses, camera lenses, telescopes, microscopes, and other precision optical equipment. The purpose of coating is to improve the performance of the lens. Coating can reduce reflections on the lens surface, thereby increasing the light transmittance of the optical component, which is especially important for certain applications such as displays, cameras, and projectors. Coating can also provide protection for optical components, such as anti-blue light coating that can filter dangerous blue light and protect the user's eyes. With the continuous development of technology, coating devices will continue to improve the performance of optical components to meet growing demand.

[0003] During the coating process, the cleaned lenses need to be loaded into the vacuum chamber of the coating machine. These lenses are usually placed on a bracket inside the coating machine. The bracket makes the loading and unloading of the lenses more convenient and quick. However, the coating materials (such as metal oxides, fluorides, etc.) of the coating machine are deposited on the lens surface by evaporation or sputtering. During evaporation coating, the coating machine often uses a heating tube or a heating coil as a heating element. The heating tube or the heating coil is usually located at the bottom of the coating machine, and the heat is conducted upward. In addition, the bracket inside the coating machine will not automatically flip over during the lens coating process. The lens can only maintain a fixed position and angle during the coating process, which will cause uneven coating thickness on the lens surface, because the deposition rate of the coating material will be affected by the position and angle of the lens. During the coating process, the temperature distribution on the lens surface will also affect the coating quality. If the bracket cannot be flipped, the temperature distribution on the lens surface will be uneven, thereby affecting the adhesion and optical performance of the coating.

[0004] Therefore, the present invention proposes an optical lens coating device and a coating method thereof to improve the shortcomings of the conventional technology and enable the optical lens to be rotated and flipped during coating to achieve uniform coating. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides an optical lens coating device and a coating method thereof, which solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: an optical lens coating device, used to achieve uniform coating of the optical lens during coating, comprising a support column, the top of the support column is fixedly connected to a coating device housing, the outer side of the coating device housing is rotatably connected to a device door, the interior of the coating device housing is provided with an auxiliary component for simplifying the coating process and making the coating material more evenly distributed on the lens surface, and the outside of the auxiliary component is provided with an anti-drop component for preventing the optical lens from falling during the flipping process and improving production flexibility.

[0007] Preferably, the auxiliary component includes a fixed column, the bottom of the fixed column is fixedly connected to the bottom of the coating device housing, the interior of the fixed column is rotatably connected with a rotating column, the top of the rotating column is fixedly connected with a rotating cylinder, the top of the fixed column is fixedly connected with a fixed cylinder, the outer surface of the fixed cylinder is provided with a groove, the top of the inner wall of the fixed cylinder is fixedly connected with a connecting rod, the end of the connecting rod away from the top of the inner wall of the fixed cylinder is fixedly connected with a triangular block, the bottom of the fixed cylinder is slidably connected with a sliding column, the end of the sliding column away from the fixed column is fixedly connected with a long plate, and the side of the long plate away from the fixed column is fixedly connected with the first cylinder.

[0008] Preferably, the anti-drop assembly includes a placement frame, which is fixedly connected to the end of the first cylinder away from the fixed column, a square groove is provided on the outer side of the placement frame, a circular hole is provided on the upper surface of the placement frame, a second cylinder is rotatably connected inside the square groove, four sections of bidirectional thread grooves are provided on the surface of the second cylinder, an annular slider is threadedly connected to the bidirectional thread grooves on the surface of the second cylinder, and a left clamping plate and a right clamping plate are fixedly connected to one end of the two annular sliders away from the fixed column, a slide plate is fixedly connected inside the square groove, and auxiliary plates are movably connected inside the left clamping plate and the right clamping plate.

[0009] Preferably, the rotating column passes through the fixed cylinder, the fixed cylinder is rotatably connected to the rotating column, and the fixed cylinder is located inside the rotating cylinder.

[0010] Preferably, the triangular block is located inside the groove.

[0011] Preferably, the first cylinder is rotatably connected to the interior of the rotating cylinder.

[0012] Preferably, the left clamping plate and the right clamping plate are symmetrically arranged with the center of the circular hole as the center line.

[0013] Preferably, the annular sliding block slides inside the sliding groove plate.

[0014] The optical lens coating method comprises the following steps:

[0015] Step 1: Before coating, thoroughly clean the lens surface by using ultrasonic cleaning or chemical cleaning to remove grease, dust and other contaminants;

[0016] Step 2: The cleaned lenses are loaded into the vacuum chamber inside the coating device housing, and the lenses are fixed on a placement rack that has the function of rotating and flipping at the same time;

[0017] Step 3: In a vacuum chamber, heat the coating material to above the boiling point to evaporate it into gas. These gas molecules will move in a straight line under vacuum conditions and deposit on the lens surface. The structure and thickness of the coating can be adjusted by controlling the heating time and deposition speed.

[0018] Step 4: During the coating process, the coating thickness and uniformity need to be monitored in real time. We can ensure the accuracy of the film layer by adjusting the evaporation source;

[0019] Step 5: After the coating is completed, it is usually necessary to remove the excess film on the surface of the optical lens and perform annealing treatment, remove the lens from the placement rack, clean and package the lens, and complete the entire process of optical lens coating.

[0020] The optical lens coating device provided by the present invention has the following beneficial effects:

[0021] 1. Through the coordinated use of the first cylinder, the sliding column, the groove and the triangular block in the auxiliary component, the flipping of the placement frame during the coating process of the optical lens is realized. The sliding column is driven to rotate and slide inside the groove by the rotation of the first cylinder. The triangular block is located in the groove. The combination of the triangular block and the groove forms a triangular slide with a convex groove on the outer surface of the fixed cylinder. The triangular slide causes the sliding column to flip inside. Flipping the lens can ensure that both sides can evenly receive the coating material, so that the front and back sides of the lens have consistent optical properties. This is especially important for lenses that require double-sided coating. Flipping the lens can also simplify the coating process, especially when different types or different thicknesses of coatings are required on both sides. By flipping the lens, the coating of both sides can be completed in the same process without separate processes.

[0022] 2. Through the coordinated use of the second cylinder, the annular slider, the left clamping plate and the right clamping plate in the anti-drop assembly, the optical lens can be fixed during the coating process of the optical lens to prevent the optical lens from falling during the flipping process. The annular slider is driven to move by the rotation of the second cylinder, and the annular slider drives the left clamping plate and the right clamping plate to approach each other. The left clamping plate and the right clamping plate clamp the optical lens to ensure that the position and angle of the lens remain unchanged during the coating process, thereby ensuring the quality and consistency of the coating. Fixing the lens can reduce vibration and collision during the flipping process, thereby improving the quality of the lens. It can ensure that the surface of the lens is flat and smooth, reduce the occurrence of flaws and defects, and can better support the production needs of different coating sizes and different coating thicknesses, thereby improving production flexibility.

[0023] 3. Through the coordinated use of the rotating column, the rotating cylinder, the first cylinder and the placement rack in the auxiliary components, the placement rack is rotated during the coating process of the optical lens. The first cylinder is driven to rotate by the rotating cylinder, and the placement rack is driven to rotate by the first cylinder. The rotation of the placement rack causes the optical lens to rotate during the coating process. By rotating the lens, the coating material can be more evenly distributed on the lens surface to avoid uneven thickness, thereby improving the optical performance and quality of the film layer. During the coating process, the lens will be subjected to radiant heat energy from the evaporation source. Rotating the lens can help evenly distribute the heat and reduce the possibility of local overheating, thereby reducing the impact of thermal stress on the lens. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0025] Figure 2 It is a three-dimensional bottom view of the overall structure of the present invention;

[0026] Figure 3 It is a schematic diagram of the overall internal structure of the present invention;

[0027] Figure 4 It is a schematic diagram of the structure of the auxiliary component and the anti-drop component of the present invention;

[0028] Figure 5 It is a partial structural cross-sectional view of the auxiliary component of the present invention;

[0029] Figure 6 This is a schematic diagram of the auxiliary component structure of the present invention;

[0030] Figure 7 for Figure 6 The enlarged structural diagram at A in the middle;

[0031] Figure 8 A bottom view of the auxiliary component structure of the present invention;

[0032] Fig. 9This is a schematic diagram of the structure of the anti-drop assembly of the present invention;

[0033] Fig.10 for Fig. 9 Enlarged structural diagram at B in the middle.

[0034] The numbers in the figure represent:

[0035] 1. Support column; 2. Coating device housing; 3. Device door;

[0036] 4. Auxiliary components; 41. Fixed column; 42. Rotating column; 43. Rotating cylinder; 44. Fixed cylinder; 45. Groove; 46. Triangular block; 47. Connecting rod; 48. Sliding column; 49. Long board; 410. First cylinder;

[0037] 5. Anti-drop assembly; 51. Placement rack; 52. Round hole; 53. Second cylinder; 54. Slide plate; 55. Annular slider; 56. Left clamping plate; 57. Auxiliary plate; 58. Right clamping plate; 59. Square groove. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] Embodiment 1

[0040] refer to Figures 1 to 10 As shown, a preferred embodiment of the present invention will be described in detail below:

[0041] An optical lens coating device, used for achieving uniform coating of the optical lens during coating, comprises a support column 1, a coating device housing 2 is fixedly connected to the top of the support column 1, a device door 3 is rotatably connected to the outer side of the coating device housing 2, an auxiliary component 4 for simplifying the coating process and making the coating material more evenly distributed on the lens surface is arranged inside the coating device housing 2, and an anti-drop component 5 is arranged outside the auxiliary component 4 for preventing the optical lens from falling during the flipping process and improving the production flexibility.

[0042] 4 includes a fixed column 41. Through the coordinated use of the first cylinder 410, the sliding column 48, the groove 45 and the triangular block 46 in the auxiliary component 4, the flipping of the placement frame 51 during the coating process of the optical lens is realized. The first cylinder 410 rotates to drive the sliding column 48 to rotate and slide inside the groove 45. The triangular block 46 is located in the groove 45. The combination of the triangular block 46 and the groove 45 forms a triangular slideway with a convex groove on the outer surface of the fixed cylinder 44. The triangular slideway flips the sliding column 48 inside. Flipping the lens can ensure that both sides can evenly receive the coating material, so that the front and back sides of the lens have consistent optical properties, which is very useful for the lens that needs double-sided coating. The coating of the lens is particularly important. Flipping the lens can also simplify the coating process, especially when different types or thicknesses of coatings are required on both sides. By flipping the lens, the coating of both sides can be completed in the same process without separate processes. The bottom of the fixed column 41 is fixedly connected to the bottom of the coating device housing 2. The interior of the fixed column 41 is rotatably connected with a rotating column 42. The rotating column 42 is driven and installed on an external driving device, and the external driving device is preferably a motor. The top of the rotating column 42 is fixedly connected with a rotating cylinder 43. The top of the fixed column 41 is fixedly connected with a fixed cylinder 44. The outer surface of the fixed cylinder 44 is provided with a groove 45. The inner wall of the fixed cylinder 44 is provided with a groove 45. A connecting rod 47 is fixedly connected to the top, and a triangular block 46 is fixedly connected to one end of the connecting rod 47 away from the top of the inner wall of the fixed cylinder 44. A sliding column 48 is slidably connected to the bottom of the fixed cylinder 44. A long plate 49 is fixedly connected to one end of the sliding column 48 away from the fixed column 41. A first cylinder 410 is fixedly connected to the side of the long plate 49 away from the fixed column 41. The rotating column 42 penetrates the fixed cylinder 44, and the fixed cylinder 44 is rotatably connected to the rotating column 42. The fixed cylinder 44 is located inside the rotating cylinder 43, and the triangular block 46 is located inside the groove 45. The first cylinder 410 penetrates and is rotatably connected to the rotating cylinder 43. Through the rotating column 42, the rotating cylinder 43, The coordinated use of the first cylinder 410 and the placement rack 51 realizes the rotation of the placement rack 51 during the coating process of the optical lens. The first cylinder 410 is driven to rotate by the rotating cylinder 43, and the rotation of the first cylinder 410 drives the placement rack 51 to rotate. The rotation of the placement rack 51 causes the optical lens to rotate during the coating process. By rotating the lens, the coating material can be more evenly distributed on the lens surface to avoid uneven thickness, thereby improving the optical performance and quality of the film layer. During the coating process, the lens will be subjected to radiant heat energy from the evaporation source. Rotating the lens can help evenly distribute the heat and reduce the possibility of local overheating, thereby reducing the impact of thermal stress on the lens.

[0043] The anti-drop assembly 5 includes a placement rack 51, which is fixedly connected to the end of the first cylinder 410 away from the fixed column 41, a square groove 59 is provided on the outer side of the placement rack 51, and a circular hole 52 is provided on the upper surface of the placement rack 51. The inside of the square groove 59 is rotatably connected to the second cylinder 53, and the surface of the second cylinder 53 is provided with four sections of bidirectional threaded grooves. An annular slider 55 is threadedly connected to the bidirectional threaded groove on the surface of the second cylinder 53, and the two ends of the two annular sliders 55 away from the fixed column 41 are respectively fixedly connected to a left clamping plate 56 and a right clamping plate 58, and the inside of the square groove 59 is fixedly connected to a slide plate 54, and the inside of the left clamping plate 56 and the right clamping plate 58 are movably connected to auxiliary plates 57. By using the auxiliary plates 57, it is possible to stabilize the material within the clamping range without using hands, which means that the operator can complete the production task faster. By using the auxiliary plates 57, it can be ensured that the material is accurately clamped within the clamping range, the clamping accuracy can be improved, and the reduction in the operator's fixed work can be reduced. The number of hand touches is reduced to keep the lens clean. The left clamping plate 56 and the right clamping plate 58 are symmetrically arranged with the center of the circular hole 52 as the center line. The annular slider 55 slides inside the slide groove plate 54. Through the coordinated use of the second cylinder 53, the annular slider 55, the left clamping plate 56 and the right clamping plate 58 in the anti-drop component 5, the optical lens is fixed during the optical lens coating process to prevent the optical lens from falling during the flipping process. The annular slider 55 is driven to move by the rotation of the second cylinder 53, and the annular slider 55 drives the left clamping plate 56 and the right clamping plate 58 to approach each other. The left clamping plate 56 and the right clamping plate 58 clamp and fix the optical lens, which can ensure that the position and angle of the lens remain unchanged during the coating process, and ensure the quality and consistency of the coating. Fixing the lens can reduce vibration and collision during the flipping process, thereby improving the quality of the lens. It can ensure that the surface of the lens is flat and smooth, reduce the occurrence of flaws and defects, and can better support the production needs of different sizes and thicknesses of coatings, thereby improving production flexibility.

[0044] Embodiment 2

[0045] The optical lens coating method comprises the following steps:

[0046] Step 1: Before coating, thoroughly clean the lens surface by using ultrasonic cleaning or chemical cleaning to remove grease, dust and other contaminants;

[0047] Step 2: The cleaned lenses are loaded into the vacuum chamber inside the coating device housing 2, and the lenses are fixed on a placement rack 51 with a rotating and flipping function;

[0048] Step 3: In a vacuum chamber, heat the coating material to above the boiling point to evaporate it into gas. These gas molecules will move in a straight line under vacuum conditions and deposit on the lens surface. The structure and thickness of the coating can be adjusted by controlling the heating time and deposition speed.

[0049] Step 4: During the coating process, the coating thickness and uniformity need to be monitored in real time. We can ensure the accuracy of the film layer by adjusting the evaporation source;

[0050] Step 5: After the coating is completed, it is usually necessary to remove the excess film on the surface of the optical lens and perform annealing treatment, take the lens out from the placement rack 51, clean and package the lens, and complete the entire process of optical lens coating.

[0051] The following is the entire working process and working principle of the above embodiment:

[0052] First, the operator takes an auxiliary plate 57 and inserts it into the left clamping plate 56 and the auxiliary plate 57. The auxiliary plate 57 can cover the circular hole 52. The operator puts the cleaned optical lens into the circular hole 52 with the auxiliary plate 57 inserted in turn. The optical lens is placed above the auxiliary plate 57 in the circular hole 52. The operator rotates the second cylinder 53. Since the surface of the second cylinder 53 is provided with a plurality of pairs of bidirectional thread grooves, each of the bidirectional thread grooves is symmetrically arranged, and each of the bidirectional thread grooves is slidably connected with an annular slider 55, the rotation of the second cylinder 53 drives the two annular sliders 55 to approach each other. When the two annular sliders 55 move, they simultaneously drive the left clamping plate 56 and the right clamping plate 58 to move in the direction of the optical lens. The annular slider 55 slides inside the slide groove plate 54. Each movement of the left clamping plate 56 and the right clamping plate 58 will put the left clamping plate 56 and the right clamping plate 58 in the direction of the optical lens. The lens in the circular hole 52 is clamped and fixed. The second cylinder 53, the annular slider 55, the left clamping plate 56 and the right clamping plate 58 in the anti-drop assembly 5 are used in coordination to fix the optical lens during the coating process to prevent the optical lens from falling during the flipping process. The annular slider 55 is driven to move by the rotation of the second cylinder 53, and the annular slider 55 drives the left clamping plate 56 and the right clamping plate 58 to approach each other. The left clamping plate 56 and the right clamping plate 58 clamp and fix the optical lens, which can ensure that the position and angle of the lens remain unchanged during the coating process, and the quality and consistency of the coating are guaranteed. Fixing the lens can reduce vibration and collision during the flipping process, thereby improving the quality of the lens. It can ensure that the surface of the lens is flat and smooth, reduce the occurrence of flaws and defects, and can better support the production needs of coatings of different sizes and different thicknesses, thereby improving production flexibility.

[0053] After the left clamping plate 56 and the right clamping plate 58 fix the lens, the operator pulls out the auxiliary plate 57 and fills the circular holes 52 on the other placement racks 51 with lenses through the above steps. The use of the auxiliary plate 57 does not require hands to stabilize the material within the clamping range, which means that the operator can complete the production task faster. The use of the auxiliary plate 57 can ensure that the material is accurately clamped within the clamping range, which can improve the clamping accuracy, reduce the operator's fixation, reduce the number of times the operator touches the hand, and keep the lens clean.

[0054] The operator starts the motor, and the motor rotates to drive the rotating column 42 to rotate. The rotating column 42 rotates to drive the rotating cylinder 43 to rotate. When the rotating cylinder 43 rotates, it drives the first cylinder 410 to rotate. When the first cylinder 410 rotates, it drives the anti-drop assembly 5 to rotate as a whole. The placement rack 51 rotates to rotate the optical lens during the coating process. By rotating the lens, the coating material can be more evenly distributed on the surface of the lens to avoid uneven thickness, thereby improving the optical performance and quality of the film layer. During the coating process, the lens will be subjected to radiant heat energy from the evaporation source. Rotating the lens can help evenly distribute the heat and reduce the possibility of local overheating, thereby reducing the impact of thermal stress on the lens.

[0055] When the first cylinder 410 rotates, it drives the long plate 49 to rotate. The rotation of the long plate 49 drives the sliding column 48 to rotate. The sliding column 48 slides at the bottom of the fixed cylinder 44. Since the triangular block 46 is located in the groove 45, the combination of the triangular block 46 and the groove 45 forms a triangular slideway with a convex groove on the outer surface of the fixed cylinder 44. When the sliding column 48 slides in the triangular slideway, the triangular slideway causes the sliding column 48 to drive the long plate 49 to tilt and flip. When the long plate 49 flips, it drives the first cylinder 410 to rotate in the rotating cylinder 43. When the first cylinder 410 rotates, it drives the placement frame 51 to rotate. The placement frame 51 drives the anti-drop assembly 5 to flip as a whole. Through the second cylinder 53, the annular slider 55, the left clamping plate 56 and The coordinated use of the right clamping plate 58 can fix the optical lens during the coating process to prevent the optical lens from falling during the flipping process. The rotation of the second cylinder 53 drives the annular slider 55 to move, and the annular slider 55 drives the left clamping plate 56 and the right clamping plate 58 to approach each other. The left clamping plate 56 and the right clamping plate 58 clamp and fix the optical lens, which can ensure that the position and angle of the lens remain unchanged during the coating process, and the quality and consistency of the coating are guaranteed. Fixing the lens can reduce vibration and collision during the flipping process, thereby improving the quality of the lens. It can ensure that the surface of the lens is flat and smooth, reduce the occurrence of flaws and defects, and can also better support the production needs of different sizes and thicknesses of coatings, thereby improving production flexibility.

[0056] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "including one..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0057] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An optical lens coating device, used to achieve uniform coating of an optical lens during coating, characterized in that: The invention comprises a support column (1), the top of which is fixedly connected to a coating device housing (2), the outer side of which is rotatably connected to a device door (3), the interior of which is provided with an auxiliary component (4) for simplifying the coating process and making the coating material evenly distributed on the surface of the lens, and the exterior of the auxiliary component (4) is provided with an anti-drop component (5) for preventing the optical lens from falling during the flipping process.

2. The optical lens coating device according to claim 1, characterized in that: The auxiliary component (4) includes a fixed column (41), the bottom of which is fixedly connected to the bottom of the coating device housing (2), the interior of the fixed column (41) is rotatably connected to a rotating column (42), the top of the rotating column (42) is fixedly connected to a rotating cylinder (43), the top of the fixed column (41) is fixedly connected to a fixed cylinder (44), the outer surface of the fixed cylinder (44) is provided with a groove (45), the top of the inner wall of the fixed cylinder (44) is fixedly connected to a connecting rod (47), the end of the connecting rod (47) away from the top of the inner wall of the fixed cylinder (44) is fixedly connected to a triangular block (46), the bottom of the fixed cylinder (44) is slidably connected to a sliding column (48), the end of the sliding column (48) away from the fixed column (41) is fixedly connected to a long plate (49), and the side of the long plate (49) away from the fixed column (41) is fixedly connected to a first cylinder (410).

3. The optical lens coating device according to claim 1, characterized in that: The anti-drop assembly (5) includes a placement frame (51), the placement frame (51) is fixedly connected to one end of the first cylinder (410) away from the fixed column (41), a square groove (59) is provided on the outer side of the placement frame (51), a round hole (52) is provided on the upper surface of the placement frame (51), a second cylinder (53) is rotatably connected inside the square groove (59), four sections of bidirectional thread grooves are provided on the surface of the second cylinder (53), and an annular slider (55) is threadedly connected to the bidirectional thread grooves on the surface of the second cylinder (53), and one end of the two annular sliders (55) away from the fixed column (41) is fixedly connected to a left clamping plate (56) and a right clamping plate (58), the inside of the square groove (59) is fixedly connected to a slide plate (54), and the insides of the left clamping plate (56) and the right clamping plate (58) are both movably connected to auxiliary plates (57).

4. The optical lens coating device according to claim 2, characterized in that: The rotating column (42) passes through the fixed cylinder (44), the fixed cylinder (44) is rotatably connected to the rotating column (42), and the fixed cylinder (44) is located inside the rotating cylinder (43).

5. The optical lens coating device according to claim 2, characterized in that: The triangular block (46) is located inside the groove (45).

6. The optical lens coating device according to claim 2, characterized in that: The first cylinder (410) penetrates and is rotatably connected to the interior of the rotating cylinder (43).

7. The optical lens coating device according to claim 3, characterized in that: The left clamping plate (56) and the right clamping plate (58) are symmetrically arranged with the center of the circular hole (52) as the center line.

8. The optical lens coating device according to claim 3, characterized in that: The annular sliding block (55) slides inside the sliding groove plate (54).

9. An optical lens coating method, applied to an optical lens coating device according to any one of claims 1 to 8, characterized in that: The following steps are involved: Step 1: Before coating, thoroughly clean the lens surface by using ultrasonic cleaning or chemical cleaning to remove grease, dust and other contaminants; Step 2: The cleaned lenses are loaded into the vacuum chamber inside the coating device housing (2), and the lenses are fixed on a placement rack (51) with a rotating and flipping function; Step 3: In a vacuum chamber, heat the coating material to above the boiling point to evaporate it into gas. These gas molecules will move in a straight line under vacuum conditions and deposit on the lens surface. The structure and thickness of the coating can be adjusted by controlling the heating time and deposition speed. Step 4: During the coating process, the coating thickness and uniformity need to be monitored in real time. We can ensure the accuracy of the film layer by adjusting the evaporation source; Step 5: After the coating is completed, it is usually necessary to remove the excess film on the surface of the optical lens and perform annealing treatment, take the lens out of the placement rack (51), clean and package the lens, and complete the entire process of optical lens coating.

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