Optical lens coating device

Abstract

The invention discloses an optical lens coating device, and relates to the technical field of lens coating. Comprising a vacuum machine; a rotating shaft is arranged in the vacuum machine, a plurality of spherical hinges which are annularly distributed are mounted on the rotating shaft, and a fan-shaped carrier is mounted on the spherical hinges and is distributed in an umbrella shape; the carrier comprises a carrier frame connected with the spherical hinge, a transmission shaft is connected to the middle of the end, away from the spherical hinge, of the carrier frame, and a transmission gear is mounted on the transmission shaft. A driving ring is rotationally mounted on the inner wall of the vacuum machine; a gear ring meshed with the transmission gear is arranged on the bottom surface of the driving ring; a supporting frame is installed on the rotating shaft, a plurality of supporting rods are installed on the supporting frame, telescopic rods are vertically installed on the supporting rods, connecting rods are installed on the telescopic rods, a sleeve is installed on the transmission shaft, and the connecting rods are connected with the sleeve. According to the device, double-sided coating can be completed at a time, the equipment cost is remarkably reduced, and the coating efficiency is improved.

Description

Technical Field

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

[0002] When light enters different transmission materials, about 5% will be reflected. There are many lenses and refractors in optical sights, which can cause a loss of 30% to 40% of the incident light. Modern optical lenses are usually coated with a single or multi-layer anti-reflection film of magnesium fluoride. A single-layer anti-reflection film can reduce reflection to 1.5%, and a multi-layer anti-reflection film can reduce reflection to 0.25%. Therefore, if the entire sight is properly coated, the light penetration rate can reach 95%. Lenses coated with a single-layer anti-reflection film are usually blue-purple or red, while lenses coated with multi-layer anti-reflection films are light green or dark purple.

[0003] Vapor coating is a very common lens coating method. It uses physical vapor deposition technology under high vacuum conditions to heat the evaporable material to high temperature and high vacuum, evaporate it into gas, and then deposit it on the surface of the substrate to form a thin film. Its application not only includes the fields of electronics and optics, but also has its unique application value in the fields of machinery and so on. Although it has disadvantages such as high equipment cost, complex production process and long production cycle, its advantages still make vapor coating technology one of the important technologies in the field of surface treatment.

[0004] Vapor coating is carried out in a vacuum device. A coating umbrella that can hold a large number of lenses is installed inside the device. During the coating process, the steam source at the bottom heats and evaporates the material and coats it on the surface of the lens. However, when this type of vapor coating equipment is in use, since the lenses are suspended in the air, only the side of the lens close to the steam source can be coated. After one side is coated, the vacuum machine needs to be stopped and inert gas is introduced into the machine at a certain speed. After the air pressure is balanced, the container is opened and the lenses are turned over one by one. The device is closed again, and the vacuum is re-drawn before coating the other side. The operation wastes a lot of time, and the process of inflation and re-vacuuming will also significantly increase the cost of using the equipment. Summary of the invention

[0005] The purpose of the present invention is to provide an optical lens coating device to solve the problems raised in the above background technology. A lens coating device capable of automatic flipping is proposed, which can automatically flip over after coating on one side without turning on the device to coat the other side, thereby improving the coating efficiency, reducing the number of times the device is shut down and restarted, and reducing energy consumption.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] An optical lens coating device comprises a vacuum machine; a fixture system is arranged in the vacuum machine; the fixture system comprises a rotating shaft installed in the middle of the vacuum machine, a plurality of ball joints distributed in a ring are installed on the rotating shaft, a fan-shaped carrier is installed on the ball joint, and the carrier is distributed in an umbrella shape; the carrier comprises a carrier frame connected to the ball joint, a transmission shaft is connected to the middle of one end of the carrier frame away from the ball joint, and a transmission gear is installed on the transmission shaft; a driving ring is rotatably installed on the inner wall of the vacuum machine, and a gear ring meshing with the transmission gear is arranged on the bottom surface of the driving ring; a support frame is installed on the rotating shaft, a plurality of support rods are installed on the support frame, a telescopic rod is vertically installed on the support rod, a connecting rod is installed on the telescopic rod, a sleeve is installed on the transmission shaft, and the connecting rod is connected to the sleeve.

[0008] As a further solution of the present invention: a loading plate is placed in the loading frame, a plurality of lens holes are formed on the loading plate, a cover plate covering the loading plate is installed on the loading frame, and through holes corresponding to the positions of the lens holes and matching in shape are formed on the cover plate.

[0009] As a further solution of the present invention: a plurality of connecting members are arranged at the edge of the loading frame, and the connecting members are connected to the cover plate.

[0010] As a further solution of the present invention: a primary motor is installed in the vacuum machine, the primary motor is connected to a rotating shaft, a spring is sleeved on the rotating shaft, one end of the spring is connected to a support frame, and the other end is connected to a positioning cylinder, the positioning cylinder is sleeved on the rotating shaft, and one end of the positioning cylinder is against the surface of the carrier.

[0011] As a further solution of the present invention: an annular limiting groove is fixedly installed in the vacuum machine, the driving ring is located in the limiting groove, a rack is provided on the surface of the driving ring, a secondary motor is installed on the limiting groove, the secondary motor is connected to the driving gear, and the front driving gear is meshed with the rack.

[0012] As a further solution of the present invention: a movable door is installed on one side of the vacuum machine, and symmetrical semicircular positioning rings are installed on the inner walls of the vacuum machine and the movable door respectively. The positioning rings are located at the edge of the carrier, and the inner side of the positioning rings protrudes toward the carrier.

[0013] As a further solution of the present invention: a base is arranged inside the vacuum machine, an evaporation source is arranged on the base, a plurality of heating lamps surrounding the evaporation source are arranged on the base, and a vent is arranged on the inner wall of the vacuum machine.

[0014] As a further solution of the present invention: a vertical adjusting rod is installed on the base, a positioning lock is slidably installed on the adjusting rod, the positioning lock is connected to the cross bar, and the cross bar is connected to the baffle.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The optical lens coating device described above is adopted. The device uses a plurality of carriers to be spliced ​​into a structure similar to a spherical cover, which is used to place the optical lens for coating. At the same time, the device can also use a telescopic rod to lift each optical lens to a horizontal position. In this position, the transmission gear can be in meshing contact with the gear ring. The gear ring controls all the carriers to turn over synchronously and then tilt downward again to restore the umbrella-shaped structure, so that the coating on the other side can be carried out again. The device can automatically complete double-sided coating after one installation is completed, with higher coating efficiency and effectively reducing the workload of manual installation.

[0017] By adopting the above-mentioned optical lens coating device, since the device does not need to open the movable door to take out the lens and turn it over in the middle of coating, and does not need to release the vacuum state and re-evacuate the air in the middle, the use cost of this part can also be effectively reduced, and the workload of manual disassembly and reinstallation after turning over can be omitted. At the same time, it can also shorten the time required for double-sided coating, reduce the number of vacuuming and gas replenishing times, significantly reduce the use cost, and have good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of an optical lens coating device.

[0019] Figure 2 This is a schematic diagram of the structure inside the vacuum machine in the optical lens coating device.

[0020] Figure 3 This is a schematic diagram of the front structure of the optical lens coating device.

[0021] Figure 4 This is a schematic diagram of the structure of the fixture system in the optical lens coating device.

[0022] Figure 5 It is a schematic diagram of the structure of the cooperation between the carrier and the driving ring in the optical lens coating device.

[0023] Figure 6 It is a schematic diagram of the structure of the carrier in the optical lens coating device.

[0024] In the figure: 1. vacuum machine; 11. base; 2. movable door; 3. fixture system; 31. primary motor; 32. rotating shaft; 321. ball joint; 33. loading rack; 331. loading frame; 332. loading plate; 3321. lens hole; 333. cover plate; 3331. through hole; 334. connecting piece; 34. transmission shaft; 341. transmission gear; 342. sleeve; 35. positioning cylinder; 351. spring; 36. support frame; 361. support rod; 362. telescopic rod; 363. connecting rod; 37. driving ring; 371. rack; 372. gear ring; 38. secondary motor; 381. driving gear; 39. limiting groove; 4. vent; 5. heating lamp; 6. baffle; 61. adjustment rod; 62. positioning lock; 63. cross bar; 7. evaporation source; 8. positioning ring. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figures 1 to 6 In an embodiment of the present invention, an optical lens coating device includes a vacuum machine 1; a fixture system 3 is provided in the vacuum machine 1; the fixture system 3 includes a rotating shaft 32 installed in the middle of the vacuum machine 1, a plurality of ball joints 321 distributed in an annular manner are installed on the rotating shaft 32, a fan-shaped carrier 33 is installed on the ball joint 321, and the carrier 33 is distributed in an umbrella shape; the carrier 33 includes a carrier frame 331 connected to the ball joint 321, and a transmission shaft 34 is connected to the middle of one end of the carrier frame 331 away from the ball joint 321 A transmission gear 341 is installed on the transmission shaft 34; a driving ring 37 is rotatably installed on the inner wall of the vacuum machine 1, and a gear ring 372 meshing with the transmission gear 341 is provided on the bottom surface of the driving ring 37; a support frame 36 is installed on the rotating shaft 32, and a plurality of support rods 361 are installed on the support frame 36, and a telescopic rod 362 is vertically installed on the support rod 361, and a connecting rod 363 is installed on the telescopic rod 362, and a sleeve 342 is installed on the transmission shaft 34, and the connecting rod 363 is connected to the sleeve 342.

[0027] The device uses a vacuum machine 1 to provide a high vacuum environment, and the lens is coated inside the vacuum machine 1. A clamp system 3 is placed above the vacuum machine 1. The clamp system 3 is composed of a plurality of carriers 33. The carriers 33 are spliced ​​into an umbrella-shaped structure and buckled on the evaporation source 7 below. After the lens is placed on each carrier 33 and fixed, the coating work can be carried out.

[0028] After a round of coating, it is not necessary to deflate the vacuum machine 1 and open the device to turn over each lens. Instead, the transmission shaft 34 on the outer edge of the carrier 33 can be raised by the telescopic rod 362 while the vacuum machine 1 is closed, so that the carrier 33 is rotated to a horizontal state. At this time, the transmission gear 341 on the transmission shaft 34 is engaged with the gear ring 372 on the drive ring 37, and the drive ring 37 rotates to drive each carrier 33 to turn over. Put the carrier 33 down again, and the turned carrier 33 will re-form an umbrella structure, and the uncoated side of the lens is facing down, so that the secondary coating can be performed immediately.

[0029] The device can complete the double-sided coating of the lens in one vacuuming, which can reduce manual operation, reduce the time cost of repeated inflation and degassing, and reduce the direct use cost of the equipment and improve production efficiency. The telescopic rod 362 used in the device can be realized by using an electric push rod or other reciprocating structures with telescopic effect.

[0030] As another embodiment of the present invention, please refer to Figure 6 , a carrier plate 332 is placed in the carrier frame 331, and a plurality of lens holes 3321 are formed on the carrier plate 332. A cover plate 333 covering the carrier plate 332 is installed on the carrier frame 331, and a through hole 3331 corresponding to the position of the lens hole 3321 and matching in shape is formed on the cover plate 333. The position of the carrier frame 331 is fixed, and the carrier plate 332 can be taken out. After the lens is placed outside, the carrier plate 332 is placed in the carrier frame 331, and then covered with the cover plate 333, clamping the lens from both sides, and both sides of the lens are exposed. After the coating on one side is completed, the carrier frame 331 is turned over with the carrier frame 33 as a whole, and the cover plate 333 is located at the bottom. The cover plate 333 also has the effect of providing support and limiting for the lens, so it does not affect the coating on the other side of the lens.

[0031] See also Figure 6 The edge of the object-carrying frame 331 is provided with a plurality of connecting members 334, and the connecting members 334 are connected to the cover plate 333. The connecting members 334 are not restrictive structures, and can be connected in different ways such as rotating screw-type connecting frames or snaps, buckles, etc.

[0032] See also Figures 1 to 4The vacuum machine 1 is provided with a primary motor 31, which is connected to a rotating shaft 32. A spring 351 is sleeved on the rotating shaft 32. One end of the spring 351 is connected to a support frame 36, and the other end is connected to a positioning cylinder 35. The positioning cylinder 35 is sleeved on the rotating shaft 32, and one end of the positioning cylinder 35 is against the surface of the carrier 33. The primary motor 31 is used to drive the rotating shaft 32 to rotate, and drive each carrier 33 to rotate during the coating process. The spring 351 is connected to the positioning cylinder 35, and the spring 351 presses the positioning cylinder 35 downward, and the positioning cylinder 35 is pressed on each carrier 33. When the carrier 33 is forced to rotate, the positioning cylinder 35 is also forced to rise. Once the driving of the driving ring 37 stops, the pressure of the positioning cylinder 35 will keep each carrier 33 in a plane state, avoiding free flipping during the falling process, so that the carrier 33 can maintain the flipping effect brought by the driving of the driving ring 37.

[0033] See also Figure 3 and Figure 5 The vacuum machine 1 is fixedly provided with an annular limiting groove 39, the driving ring 37 is located in the limiting groove 39, a rack 371 is provided on the surface of the driving ring 37, a secondary motor 38 is installed on the limiting groove 39, the secondary motor 38 is connected to a driving gear 381, and the front driving gear 381 is meshed with the rack 371. The limiting groove 39 can also drive the ring 37, and the secondary motor 38 drives the rack 371 to move through the driving gear 381, thereby controlling the rotation of the driving ring 37.

[0034] See also Figure 1 A movable door 2 is installed on one side of the vacuum machine 1. Symmetrical semicircular positioning rings 8 are installed on the inner walls of the vacuum machine 1 and the movable door 2, respectively. The positioning ring 8 is located at the edge of the carrier 33, and the inner side of the positioning ring 8 protrudes toward the carrier 33. The positioning ring 8 is located at the lower edge of the umbrella-shaped structure composed of the carrier 33, shielding the outer edge of the carrier 33, reducing the automatic coating of the coating material on the structure at the edge of the carrier 33 and other structures above the carrier 33. At the same time, the positioning ring 8 is also used to provide support for the carrier 33. When the outer edge of the carrier 33 sags, it rests on the protruding part of the inner edge of the positioning ring 8, so that the carrier 33 remains horizontal and does not rotate beyond the requirement.

[0035] See also Figures 1 to 3, a base 11 is provided inside the vacuum machine 1, an evaporation source 7 is provided on the base 11, a plurality of heating lamps 5 surrounding the evaporation source 7 are provided on the base 11, and a vent 4 is provided on the inner wall of the vacuum machine 1. The base 11 is used to provide an installation space for the evaporation source 7 and to provide various required circuits and energy sources. The evaporation source 7 is used to evaporate particles required for coating. The heating lamps 5 heat the inside of the vacuum machine 1. The vent 4 is a structure for connecting the vacuum machine 1 with the outside. The vacuum machine 1 needs to have a vacuuming device and a device for replenishing gas into the vacuum machine 1. These devices are the basic structures of the vacuum machine 1 itself and are not described as restrictive structures. The vacuum machine 1 can be directly regarded as having the above-mentioned various components and functions.

[0036] See also Figures 1 to 3 A vertical adjusting rod 61 is installed on the base 11, a positioning lock 62 is slidably installed on the adjusting rod 61, the positioning lock 62 is connected to a cross bar 63, and the cross bar 63 is connected to the baffle 6. The baffle 6 is used to adjust the angle and range of evaporation. The adjusting rod 61 is vertical, and the height and direction of the baffle 6 can be changed by the positioning lock 62.

[0037] The working principle of the present invention is:

[0038] The device uses a plurality of carriers 33 in a vacuum machine 1 to form an umbrella-shaped clamp system 3. The carrier 33 can clamp the lens on both sides and expose both sides of the lens. The middle of the carrier 33 is connected to the rotating shaft 32 through a ball joint 321, and a transmission shaft 34 is installed on the outer edge. The transmission gear 341 on the transmission shaft 34 can cooperate with the gear ring 372 on the drive ring 37. At the same time, a support frame 36 is also installed on the rotating shaft 32, and the height of the transmission shaft 34 can be adjusted by using a telescopic rod 362. After a round of coating, the device does not need to be deflated to adjust the lens, but can directly lift the carrier 33, use the drive ring 37 to drive the carrier 33 to rotate and turn over, and then fall back into an umbrella-shaped state for a second round of coating, which significantly improves the efficiency of the negative side.

[0039] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An optical lens coating device, comprising a vacuum machine; characterized in that: A clamp system is arranged in the vacuum machine; the clamp system comprises a rotating shaft installed in the middle of the vacuum machine, a plurality of ball joints distributed in a ring are installed on the rotating shaft, a fan-shaped carrier is installed on the ball joint, and the carrier is distributed in an umbrella shape; the carrier comprises a carrier frame connected to the ball joint, a transmission shaft is connected to the middle of one end of the carrier frame away from the ball joint, and a transmission gear is installed on the transmission shaft; a driving ring is rotatably installed on the inner wall of the vacuum machine, and a gear ring meshing with the transmission gear is arranged on the bottom surface of the driving ring; a support frame is installed on the rotating shaft, a plurality of support rods are installed on the support frame, a telescopic rod is vertically installed on the support rod, a connecting rod is installed on the telescopic rod, a sleeve is installed on the transmission shaft, and the connecting rod is connected to the sleeve.

2. The optical lens coating device according to claim 1, characterized in that: A loading plate is placed in the loading frame, a plurality of lens holes are formed on the loading plate, a cover plate for covering the loading plate is installed on the loading frame, and through holes corresponding to the positions of the lens holes and matching in shape are formed on the cover plate.

3. The optical lens coating device according to claim 1 or 2, characterized in that: A plurality of connecting pieces are arranged at the edge of the object loading frame, and the connecting pieces are connected to the cover plate.

4. The optical lens coating device according to claim 1, characterized in that: A primary motor is installed in the vacuum machine, and the primary motor is connected to a rotating shaft. A spring is sleeved on the rotating shaft. One end of the spring is connected to a support frame, and the other end is connected to a positioning cylinder. The positioning cylinder is sleeved on the rotating shaft, and one end of the positioning cylinder is against the surface of the carrier.

5. The optical lens coating device according to claim 1 or 4, characterized in that: An annular limiting groove is fixedly installed in the vacuum machine, the driving ring is located in the limiting groove, a rack is arranged on the surface of the driving ring, a secondary motor is installed on the limiting groove, the secondary motor is connected to the driving gear, and the front driving gear is meshed with the rack.

6. The optical lens coating device according to claim 1, characterized in that: A movable door is installed on one side of the vacuum machine, and symmetrical semicircular positioning rings are respectively installed on the inner walls of the vacuum machine and the movable door. The positioning rings are located at the edge of the carrier, and the inner side of the positioning rings protrudes toward the carrier.

7. The optical lens coating device according to claim 1, characterized in that: A base is arranged inside the vacuum machine, an evaporation source is arranged on the base, a plurality of heating lamps surrounding the evaporation source are arranged on the base, and a vent is arranged on the inner wall of the vacuum machine.

8. The optical lens coating device according to claim 7, characterized in that: A vertical adjusting rod is installed on the base, a positioning lock is slidably installed on the adjusting rod, the positioning lock is connected to the cross bar, and the cross bar is connected to the baffle.

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