Vacuum coating device for optical lens

Abstract

The utility model discloses a vacuum coating device for optical lenses, which relates to the technical field of lens coating devices and comprises a machine body and a vacuum chamber, the vacuum chamber is mounted on the inner side of the machine body, an assembly part and a coating main body are arranged on the inner side of the machine body, the coating main body is positioned at the top of the assembly part, and the assembly part comprises a turn-over component. The turn-over assembly comprises a lens frame, the lens frame is arranged on the inner side of the vacuum chamber, double-shaft motors are fixedly installed on the two sides of the lens frame, output shafts of the double-shaft motors are connected with driving wheels, and lens rings are further arranged on the two sides of the double-shaft motors. According to the vacuum coating device for the optical lens, the lens ring and the driving wheel rotate in the opposite direction, so that the lenses on the lens ring in the lens frame rotate, the number of deposited films on the lenses is the same, the thickness of the films is more uniform, and the output shaft of the servo motor drives the main rotating shaft to rotate; and the lens frames on the main rotating shaft are kept rotating synchronously, so that the lens coating effect is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of lens coating devices, in particular to a vacuum coating device for optical lenses. Background Art

[0002] Optical lens vacuum coating is a technical process that uses various metal or compound materials in a vacuum environment to deposit a thin film on the surface of an optical lens to change its optical properties.

[0003] Usually, multiple groups of lenses are uniformly operated through a coating device. The existing Chinese patent with authorization announcement number CN219260164U discloses a vacuum coating device for optical lenses. It is provided with a moving mechanism composed of a moving screw and a T-shaped support block and a clamping mechanism in a positioning groove, thereby accelerating the cooling of the lens, improving the safety when taking out the material, and reducing the cooling and changing time of the material and the equipment.

[0004] The optical lens to be processed is fixed in the deposition chamber, and then the system is evacuated into a vacuum state. The air and impurities in the chamber are removed by a vacuum pump. When the required vacuum degree is reached, the target material in the evaporation source or sputtering source is heated to convert it into vapor or particles according to the coating process requirements, and deposited on the surface of the optical lens. However, due to the different amounts of thin film deposited on the lenses on the fixed mounting frame, it is easy to cause uneven film thickness, which affects the lens coating effect. Utility Model Content

[0005] In view of the above-mentioned problem that the amount of film deposited on the lens on the fixed mounting frame is different, which easily leads to uneven film thickness and affects the coating effect of the lens, the utility model is proposed.

[0006] Therefore, the purpose of the utility model is to provide an optical lens vacuum coating device, the purpose of which is to: maintain the lens ring in reverse rotation with the driving wheel, and drive the lens frame to rotate through the main shaft, so that the amount of thin film deposited on the lens is the same, the thickness of the film is more uniform, and the lens coating effect is guaranteed.

[0007] In order to solve the above technical problems, the utility model provides the following technical solutions: an optical lens vacuum coating device, comprising a body and a vacuum chamber, wherein the vacuum chamber is installed on the inner side of the body, and an assembly component and a coating body are arranged on the inner side of the body, wherein the coating body is located on the top of the assembly component;

[0008] The assembly parts include a flip assembly, and the flip assembly includes a lens frame, which is arranged on the inner side of the vacuum chamber, and dual-axis motors are fixedly installed on both sides of the lens frame, and the output shafts of the dual-axis motors are connected to driving wheels. Lens rings are also arranged on both sides of the dual-axis motor, and the lens rings are movably connected to the inner side of the lens frame through driving wheels, and correspond to the driving wheels one by one. The vacuum chamber is communicated with the interior of the machine body, and when the coating work is carried out, the interior of the vacuum chamber is in a vacuum state, and the dual-axis motor can drive two sets of driving wheels to rotate at the same time. When the driving wheels rotate, the lens rings and the driving wheels keep rotating in the opposite direction.

[0009] As a preferred solution of the optical lens vacuum coating device of the utility model, wherein: the lens frame is movably connected to the inner side of the vacuum chamber through a main rotating shaft, one end of the main rotating shaft passing through the vacuum chamber is fixedly connected to the output shaft of a servo motor, the servo motor is fixedly installed on the top of the machine body, the main rotating shaft coincides with the axial center of the vacuum chamber, and the output shaft of the servo motor can drive the lens frame on the main rotating shaft to rotate inside the vacuum chamber.

[0010] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: a pulley is fixedly installed on the end of the driving wheel away from the dual-axis motor, and the pulleys are connected by a synchronous belt. The synchronous belts are distributed on both sides of the lens frame, and the pulleys connected by the synchronous belts rotate in the same direction and at the same speed, so that the lens on the lens frame can rotate with the lens frame, so that the thickness of the lens film is more uniform.

[0011] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: the assembly component also includes a clamping assembly, the clamping assembly also includes a sleeve, the sleeve is hinged on both sides of the lens ring, the inner side of the sleeve is provided with a compression spring, the inner side of the sleeve is movably connected with a pressure shaft, the end of the pressure shaft away from the compression spring protrudes from the outside of the sleeve, the angle of the sleeve can be adjusted under the restriction of the lens ring, the compression spring is in a maximum extension state when the device is not in use, and the length of the pressure shaft protruding from the sleeve is at a maximum value.

[0012] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: the end of the pressure shaft away from the sleeve is hinged with an adjustment arm, the adjustment arms are hinged on both sides of the lens ring, the inner side of the lens ring is provided with an arc-shaped groove for facilitating the movement of the adjustment arm, the other end of the adjustment arm is provided with a linear groove for facilitating the movement in the lens ring, and the angle between the adjustment arms gradually increases when the lens is placed.

[0013] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: the side of the adjusting arm facing away from the pressure axis is hinged with an arc-shaped clamping plate, the arc-shaped clamping plate corresponds to the adjusting arm one-to-one, the other end of the arc-shaped clamping plate is hinged with an adjusting slider, the adjusting slider is threadedly connected to the adjusting arm through an adjusting screw, and the inner side of the arc-shaped clamping plate is provided with an arc-shaped lining for facilitating the installation of the lens, when the adjusting screw rotates, the adjusting slider gradually approaches the arc-shaped clamping plate, so that the distance between the arc-shaped clamping plates is reduced, thereby fixing the lens.

[0014] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: the coating body includes a target material cabin, the target material cabin is fixedly installed on both sides of the vacuum cabin, an evaporator is arranged on the top of the target material cabin, the output shaft of the evaporator is connected to the jet tube, the other end of the jet tube extends to the inner side of the vacuum cabin, the target material for coating the lens can be stored in the target material cabin, the evaporator can heat the target material to convert it into steam or particles, and deposit it on the surface of the optical lens through the transport of the jet tube.

[0015] As a preferred solution of the optical lens vacuum coating device described in the utility model, wherein: a one-way filter cabin is arranged between the machine body and the vacuum cabin, the one-way filter cabins are distributed on both sides of the vacuum cabin, a vacuum pump is arranged on the top of the one-way filter cabin, and the one-way filter cabin corresponds to the vacuum pump one by one, the vacuum pump can draw the machine body and the vacuum cabin into a vacuum state, and the air and impurities in the vacuum cabin are removed by the vacuum pump to achieve the vacuum environment requirement required for coating.

[0016] Beneficial effects of the utility model:

[0017] 1. The lens ring keeps rotating in the opposite direction to the driving wheel, so that the lens on the lens ring in the lens frame rotates, so that the amount of thin film deposited on the lens is the same, and the thickness of the film is more uniform. The main shaft is driven to rotate by the servo motor output shaft, so that the lens frame on the main shaft keeps rotating synchronously to ensure the lens coating effect.

[0018] 2. By increasing the length of the pressure shaft in the sleeve, the adjusting arm is pushed to reset, and the corresponding adjusting screw on the adjusting arm is rotated, so that the threaded adjusting slider pushes the distance between the arc clamping plates to gradually decrease, and the lens on the lining on the arc clamping plate is firmly fixed, thereby avoiding the probability of the lens falling off during the coating process.

[0019] 3. The target material in the target chamber is heated by an evaporator to convert it into vapor or particles, and then deposited on the surface of the optical lens on the lens ring. During the deposition process, the film composition, thickness and uniformity can be controlled by parameters such as the temperature of the vapor target, the rotation speed and motion trajectory of the substrate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0021] Figure 1 It is a schematic diagram of the overall structure of the vacuum coating device for optical lenses of the utility model.

[0022] Figure 2 It is a schematic cross-sectional structure diagram of the vacuum coating device for optical lenses of the utility model.

[0023] Figure 3 The utility model is a schematic diagram of the structure of the assembly parts of the optical lens vacuum coating device.

[0024] Figure 4 It is a schematic diagram of the structure of the flip assembly of the optical lens vacuum coating device of the utility model.

[0025] Figure 5 It is a schematic diagram of the structure of the clamping assembly of the optical lens vacuum coating device of the utility model.

[0026] Figure 6 The utility model is an optical lens vacuum coating device Figure 5 Schematic diagram of the enlarged structure of part A.

[0027] Description of reference numerals:

[0028] 1. Machine body; 2. Vacuum chamber; 3. Assembly parts; 31. Flip assembly; 311. Lens holder; 312. Dual-axis motor; 313. Driving wheel; 314. Lens ring; 315. Main shaft; 316. Servo motor; 317. Pulley; 318. Synchronous belt; 32. Clamping assembly; 321. Sleeve; 322. Compression spring; 323. Pressure shaft; 324. Adjusting arm; 325. Arc splint; 326. Adjusting screw; 327. Adjusting slider; 4. Coating body; 41. Target chamber; 42. Evaporator; 43. Jet tube; 44. Vacuum pump; 45. One-way filter chamber. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0030] Example 1

[0031] Reference Figure 1-4, which is the first embodiment of the utility model, provides an optical lens vacuum coating device, which includes a body 1 and a vacuum chamber 2, the vacuum chamber 2 is installed on the inner side of the body 1, the inner side of the body 1 is provided with an assembly component 3 and a coating body 4, the coating body 4 is located on the top of the assembly component 3, the assembly component 3 includes a flip assembly 31, the flip assembly 31 includes a lens frame 311, the lens frame 311 is arranged on the inner side of the vacuum chamber 2, both sides of the lens frame 311 are fixedly installed with dual-axis motors 312, the output shafts of the dual-axis motors 312 are connected with driving wheels 313, and both sides of the dual-axis motors 312 are also provided with lens rings 314, the lens rings 314 are movably connected to the inner side of the lens frame 311 through the driving wheels 313, and correspond one to one with the driving wheels 313.

[0032] The lens frame 311 is movably connected to the inner side of the vacuum chamber 2 via a main shaft 315 . One end of the main shaft 315 that passes through the vacuum chamber 2 is fixedly connected to the output shaft of a servo motor 316 . The servo motor 316 is fixedly installed on the top of the machine body 1 .

[0033] A pulley 317 is fixedly mounted on one end of the driving wheel 313 away from the dual-axis motor 312 . The pulleys 317 are connected to each other via a synchronous belt 318 . The synchronous belt 318 is distributed on both sides of the lens frame 311 .

[0034] During use, when in use, the lens to be coated is fixed on the corresponding lens ring 314. When the corresponding hollow environment is reached in the vacuum chamber 2, during the thin film deposition process, the corresponding dual-axis motor 312 on the lens frame 311 is started, so that the output shaft of the dual-axis motor 312 drives the connected driving wheel 313, so that the lens ring 314 corresponding to the driving wheel 313 keeps rotating in the opposite direction to the driving wheel 313 under the restriction of the lens frame 311, so that the lens on the lens ring 314 in the lens frame 311 rotates, so that the number of thin films deposited on the lenses is the same, and the thickness of the thin film is more uniform. The main shaft 315 is driven to rotate by the output shaft of the servo motor 316, so that the lens frame 311 on the main shaft 315 keeps rotating synchronously to ensure the lens coating effect.

[0035] Example 2

[0036] Reference Figure 1-6 , which is the second embodiment of the utility model, and this embodiment is different from the first embodiment in that:

[0037] The assembly component 3 also includes a clamping assembly 32, and the clamping assembly 32 also includes a sleeve 321. The sleeve 321 is hinged on both sides of the lens ring 314. A compression spring 322 is arranged on the inner side of the sleeve 321. The inner side of the sleeve 321 is movably connected with a pressure shaft 323. One end of the pressure shaft 323 away from the compression spring 322 protrudes from the outer side of the sleeve 321.

[0038] An adjusting arm 324 is hingedly connected to one end of the pressure shaft 323 away from the sleeve 321 , and the adjusting arms 324 are hingedly connected to two sides of the lens ring 314 .

[0039] An arc-shaped clamping plate 325 is hinged on one side of the adjusting arm 324 away from the pressure shaft 323 , and the arc-shaped clamping plate 325 corresponds to the adjusting arm 324 one by one. An adjusting slider 327 is hinged on the other end of the arc-shaped clamping plate 325 , and the adjusting slider 327 is threadedly connected to the adjusting arm 324 through an adjusting screw 326 .

[0040] The coating body 4 includes a target cabin 41 , which is fixedly mounted on both sides of the vacuum cabin 2 . An evaporator 42 is disposed on the top of the target cabin 41 . The output shaft of the evaporator 42 is connected to a jet tube 43 , and the other end of the jet tube 43 extends to the inner side of the vacuum cabin 2 .

[0041] A one-way filter cabin 45 is arranged between the machine body 1 and the vacuum cabin 2 . The one-way filter cabin 45 is distributed on both sides of the vacuum cabin 2 . A vacuum pump 44 is arranged on the top of the one-way filter cabin 45 . The one-way filter cabin 45 corresponds to the vacuum pump 44 one by one.

[0042] When in use, by moving the adjusting arm 324 along the arc-shaped groove in the lens ring 314, the angle between the adjusting arms 324 is increased, and the adjusting arm 324 moves under the restriction of the lens frame 311 through its own groove, and at the same time, the length of the pressure shaft 323 hinged on the adjusting arm 324 entering the sleeve 321 is increased, and the extension length of the compression spring 322 in the sleeve 321 is reduced. After the lens is placed in the arc-shaped lining in the arc-shaped clamping plate 325, the adjusting arm 324 is released, so that the extension length of the compression spring 322 in the sleeve 321 is increased, and the length of the pressure shaft 323 in the sleeve 321 is increased, and the adjusting arm 324 is pushed to reset, and the corresponding adjusting screw 326 on the adjusting arm 324 is rotated so that the threaded adjusting slider 327 pushes the arc-shaped adjusting screw 326 to move the adjusting slider 327. The distance between the clamps 325 is gradually reduced, and the lens on the lining of the arc clamp 325 is firmly fixed, so as to avoid the probability of the lens falling off during the coating process. During the coating process, the optical lens to be processed is fixed in the lens ring 314, and then the body 1 and the vacuum chamber 2 are evacuated into a vacuum state, and the air and impurities in the body 1 and the vacuum chamber 2 are removed by the vacuum pump 44 and the one-way filter chamber 45. When the required vacuum degree is reached, according to the coating process requirements, the target material in the target chamber 41 is heated by the evaporator 42 to convert it into steam or particles, and deposited on the surface of the optical lens on the lens ring 314. During the deposition process, the film composition, thickness and uniformity can be controlled by parameters such as the temperature of the steam target material, the rotation speed of the substrate and the motion trajectory.

[0043] The remaining structures are the same as those of Example 1.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. An optical lens vacuum coating device, comprising a body (1) and a vacuum chamber (2), wherein the vacuum chamber (2) is installed inside the body (1), and is characterized in that: An assembly component (3) and a coating body (4) are arranged on the inner side of the machine body (1), and the coating body (4) is located on the top of the assembly component (3); The assembly component (3) comprises a flip assembly (31), the flip assembly (31) comprises a lens frame (311), the lens frame (311) is arranged on the inner side of the vacuum chamber (2), dual-axis motors (312) are fixedly installed on both sides of the lens frame (311), the output shafts of the dual-axis motors (312) are connected to driving wheels (313), and lens rings (314) are also arranged on both sides of the dual-axis motor (312), the lens rings (314) are movably connected to the inner side of the lens frame (311) through the driving wheels (313), and correspond one to one with the driving wheels (313).

2. The optical lens vacuum coating device according to claim 1, characterized in that: The lens frame (311) is movably connected to the inner side of the vacuum chamber (2) via a main rotating shaft (315); one end of the main rotating shaft (315) passing through the vacuum chamber (2) is fixedly connected to the output shaft of a servo motor (316); and the servo motor (316) is fixedly mounted on the top of the machine body (1).

3. The optical lens vacuum coating device according to claim 2, characterized in that: A pulley (317) is fixedly mounted on one end of the driving wheel (313) away from the dual-axis motor (312), and the pulleys (317) are connected to each other via a synchronous belt (318), and the synchronous belt (318) is distributed on both sides of the lens frame (311).

4. The optical lens vacuum coating device according to claim 1, characterized in that: The assembly component (3) further comprises a clamping assembly (32), and the clamping assembly (32) further comprises a sleeve (321), wherein the sleeve (321) is hinged on both sides of the lens ring (314), a compression spring (322) is arranged on the inner side of the sleeve (321), and a pressure shaft (323) is movably connected to the inner side of the sleeve (321), and one end of the pressure shaft (323) away from the compression spring (322) protrudes from the outer side of the sleeve (321).

5. The optical lens vacuum coating device according to claim 4, characterized in that: An end of the pressure shaft (323) away from the sleeve (321) is hinged with an adjustment arm (324), and the adjustment arms (324) are hinged on both sides of the lens ring (314).

6. The optical lens vacuum coating device according to claim 5, characterized in that: The side of the adjusting arm (324) facing away from the pressure shaft (323) is hinged with an arc-shaped clamping plate (325), and the arc-shaped clamping plate (325) corresponds to the adjusting arm (324) one by one. The other end of the arc-shaped clamping plate (325) is hinged with an adjusting slider (327), and the adjusting slider (327) is threadedly connected to the adjusting arm (324) through an adjusting screw (326).

7. The optical lens vacuum coating device according to claim 1, characterized in that: The coating body (4) comprises a target material cabin (41), wherein the target material cabin (41) is fixedly mounted on both sides of the vacuum cabin (2), and an evaporator (42) is arranged on the top of each target material cabin (41), wherein the output shaft of the evaporator (42) is connected to a jet tube (43), and the other end of the jet tube (43) extends to the inner side of the vacuum cabin (2).

8. The optical lens vacuum coating device according to claim 7, characterized in that: A one-way filter cabin (45) is arranged between the machine body (1) and the vacuum cabin (2); the one-way filter cabin (45) is distributed on both sides of the vacuum cabin (2); a vacuum pump (44) is arranged on the top of the one-way filter cabin (45); and the one-way filter cabin (45) corresponds to the vacuum pump (44) one by one.

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