Optical lens coating device

Abstract

The present invention discloses an optical lens coating device, which relates to the field of lens coating technology. The device comprises a vacuum machine, wherein a rotating shaft is provided in the vacuum machine, and a plurality of annularly distributed ball joints are installed on the rotating shaft, and a fan-shaped carrier is installed on the ball joint, and the carriers are distributed in an umbrella shape. The carrier includes a carrier frame connected to the ball joint, and a transmission shaft is connected to the middle part of the carrier frame away from the ball joint, and a transmission gear is installed on the transmission shaft. A drive ring is rotatably installed on the inner wall of the vacuum machine, and a gear ring meshing with the transmission gear is provided on the bottom surface of the drive ring. A support frame is installed on the rotating shaft, and a plurality of support rods are installed on the support frame, and telescopic rods are vertically installed on the support rods. Connecting rods are installed on the telescopic rods, and a sleeve is installed on the transmission shaft, and the connecting rods are connected to the sleeve. The device can complete double-sided coating in one go, significantly reducing equipment costs and improving coating efficiency.

Description

Technical Field

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

[0002] When light enters various transmissive materials, approximately 5% is reflected. Optical scopes contain numerous lenses and refractors, which together can cause a loss of 30% to 40% of the incoming light. Modern optical lenses are typically coated with a single or multi-layer antireflection coating of magnesium fluoride. A single layer of antireflection coating can reduce reflection to 1.5%, while a multi-layer coating can reduce reflection to 0.25%. Therefore, if the entire scope is properly coated, the light transmission rate can reach 95%. Lenses with a single layer of antireflection coating are typically bluish-purple or red, while lenses with multi-layer antireflection coatings appear light green or dark purple.

[0003] Vapor coating is a very common lens coating method. It utilizes physical vapor deposition (PVD) technology under high vacuum conditions. A vaporizable material is heated to a high temperature and high vacuum, evaporating it into a gaseous state. This gas is then deposited onto the substrate surface to form a thin film. Its applications extend beyond electronics and optics, and it also holds unique value in fields such as mechanics. While it has drawbacks such as high equipment costs, complex production processes, and long production cycles, its advantages make vapor coating a key technology in the surface treatment field.

[0004] Vapor coating is performed in a vacuum device equipped with a coating umbrella that can hold a large number of lenses. During the coating process, a steam source at the bottom heats and evaporates the material, coating it on the lens surface. However, since the lenses are suspended in the air, this type of vapor coating device can only coat the side of the lens closest to the steam source. After coating one side, the vacuum device must be stopped and an inert gas must be introduced into the device at a constant rate. After the air pressure is balanced, the container is opened and the lenses are turned over one by one. The device is then closed again and the vacuum is re-applied before coating the other side. This operation wastes a lot of time, and the gas filling and re-vacuuming process also significantly increases the cost of using the device. Summary of the Invention

[0005] The present invention aims to provide an optical lens coating device to solve the problems mentioned in the background art. The present invention proposes an automatically flippable lens coating device that can automatically flip over after coating one side without having to restart the device to coat the other side. This improves coating efficiency, reduces the number of times the device needs to be shut down and restarted, and reduces energy consumption.

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

[0007] An optical lens coating device includes a vacuum machine; a clamping system is provided in the vacuum machine; the clamping system includes 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 includes a carrier frame connected to the ball joint, a transmission shaft is connected to the middle of the end of the carrier frame away from the ball joint, and a transmission gear is installed on the transmission shaft; a drive ring is rotatably installed on the inner wall of the vacuum machine, and a gear ring meshing with the transmission gear is provided on the bottom surface of the drive 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 opened on the loading plate, a cover plate covering the loading plate is installed on the loading frame, and the cover plate has through holes corresponding to the positions of the lens holes and matching the shapes.

[0009] As a further solution of the present invention: a plurality of connecting members are provided 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 first-stage motor is installed in the vacuum machine, the first-stage motor is connected to the rotating shaft, a spring is sleeved on the rotating shaft, one end of the spring is connected to the support frame, and the other end is connected to the 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 engaged 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 provided inside the vacuum machine, an evaporation source is provided on the base, a plurality of heating lamps surrounding the evaporation source are provided on the base, and a vent is provided on the inner wall of the vacuum machine.

[0014] As a further solution of the present invention: a vertical adjustment rod is installed on the base, a positioning lock is slidably installed on the adjustment 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 uses a plurality of carriers assembled into a structure similar to a spherical cover for placing optical lenses 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 engage with the ring gear. The ring gear controls all the carriers to turn over synchronously and then tilt downward to restore the umbrella-shaped structure, so that the other side can be coated again. The device can automatically complete double-sided coating after one installation, which has higher coating efficiency and effectively reduces the workload of manual installation.

[0017] By using 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, nor does it 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 it 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 replenishment times, significantly reduce the use cost, and have good economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This 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 This is a schematic diagram of the structure of the carrier and drive ring in the optical lens coating device.

[0023] Figure 6 This 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. Clamp 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. Connector; 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. Drive ring; 371. Rack; 372. Ring gear; 38. Secondary motor; 381. Drive 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 clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts 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 annularly distributed ball joints 321 are installed on the rotating shaft 32, and 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 the end of the carrier frame 331 away from the ball joint 321. A transmission gear 341 is installed on the transmission shaft 34; a drive ring 37 is rotatably installed on the inner wall of the vacuum machine 1, and a gear ring 372 is provided on the bottom surface of the drive ring 37 that engages with the transmission gear 341; 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. A sleeve 342 is installed on the transmission shaft 34, and the connecting rod 363 is connected to the sleeve 342.

[0027] This 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 multiple carriers 33. The carriers 33 are spliced ​​into an umbrella-shaped structure and buckled onto 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, there's no need to deflate the vacuum chamber 1 and open the device to flip each lens over. Instead, with the vacuum chamber 1 closed, the drive shaft 34 on the outer edge of the carrier 33 can be raised using the telescopic rod 362, causing the carrier 33 to rotate until it's horizontal. The transmission gear 341 on the drive shaft 34 then engages the gear ring 372 on the drive ring 37, causing the drive ring 37 to rotate, flipping each carrier 33. The carrier 33 is then lowered back down, re-formed into an umbrella-like structure with the uncoated side of the lens facing downward, allowing for a second coating.

[0029] The device can complete double-sided coating of the lens in a single vacuuming operation, which can not only reduce manual operation, but also reduce the time cost of repeated inflation and degassing, while also reducing the direct use cost of the equipment and improving production efficiency. The telescopic rod 362 used in the device can be implemented using an electric push rod or other reciprocating structure with a telescopic effect.

[0030] As another embodiment of the present invention, see Figure 6 A carrier plate 332 is placed in the carrier frame 331. The carrier plate 332 is provided with a plurality of lens holes 3321. A cover plate 333 covering the carrier plate 332 is installed on the carrier frame 331. The cover plate 333 is provided with through holes 3331 that correspond to and match the positions of the lens holes 3321. The carrier frame 331 is fixed in position, and the carrier plate 332 can be removed. 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. The lens is clamped from both sides, and both sides of the lens are exposed. After coating one side, the carrier frame 331 is turned over as a whole with the carrier frame 33. The cover plate 333 is located at the bottom. The cover plate 333 also provides support and position limiting for the lens, so it does not affect the coating of 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 equipped with a primary motor 31. The primary motor 31 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 abuts the surface of the carrier 33. The primary motor 31 is used to drive the rotating shaft 32 to rotate, driving 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. The positioning cylinder 35 presses on each carrier 33. When the carrier 33 is forced to rotate, the positioning cylinder 35 is also forced to rise. Once the drive ring 37 stops driving, the pressure of the positioning cylinder 35 keeps each carrier 33 in a flat state, preventing free flipping during the falling process and allowing the carrier 33 to maintain the flipping effect caused by the drive ring 37.

[0033] See also Figure 3 and Figure 5 An annular retaining groove 39 is fixedly installed within the vacuum machine 1. The drive ring 37 is located within the retaining groove 39. A rack 371 is provided on the surface of the drive ring 37. A secondary motor 38 is mounted on the retaining groove 39. The secondary motor 38 is connected to a drive gear 381, and the front drive gear 381 meshes with the rack 371. The retaining groove 39 also functions to drive the ring 37. The secondary motor 38 drives the rack 371 via the drive gear 381, thereby controlling the rotation of the drive ring 37.

[0034] See also Figure 1 A movable door 2 is mounted on one side of the vacuum machine 1. Symmetrical semicircular positioning rings 8 are mounted on the inner walls of the vacuum machine 1 and the movable door 2, respectively. The positioning rings 8 are located at the edge of the carrier 33, and the inner sides of the positioning rings 8 protrude toward the carrier 33. The positioning rings 8 are located at the lower edge of the umbrella-like structure formed by the carrier 33, shielding the outer edge of the carrier 33 and reducing the automatic coating of the coating material on the structures at the edge of the carrier 33 and other structures above the carrier 33. The positioning rings 8 also provide support for the carrier 33. When the outer edge of the carrier 33 sags, it abuts against the raised inner edge of the positioning rings 8, keeping the carrier 33 horizontal and preventing undesired rotation.

[0035] See also Figures 1 to 3The vacuum machine 1 is provided with a base 11 inside, on which an evaporation source 7 is provided. A plurality of heating lamps 5 surrounding the evaporation source 7 are provided on the base 11, and an air vent 4 is provided on the inner wall of the vacuum machine 1. The base 11 is used to provide installation space for the evaporation source 7 and to provide the various required circuits and energy sources. The evaporation source 7 is used to evaporate the particles required for coating. The heating lamps 5 heat the inside of the vacuum machine 1. The air vent 4 is the structure that connects the vacuum machine 1 to the outside. The vacuum machine 1 needs to have equipment for evacuating the vacuum machine and equipment for replenishing gas into the vacuum machine 1. These equipment seats are the basic structures of the vacuum machine 1 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 The base 11 is mounted with a vertical adjustment rod 61, on which a positioning lock 62 is slidably mounted. The positioning lock 62 is connected to a crossbar 63, which is connected to the baffle 6. The baffle 6 is used to adjust the angle and range of evaporation. The adjustment rod 61 is vertical, and the positioning lock 62 can be used to change the height and direction of the baffle 6.

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

[0038] This device uses multiple carriers 33 within a vacuum machine 1 to form an umbrella-shaped clamping system 3. The carriers 33 can double-sidedly clamp the lens, exposing both sides. The center of the carrier 33 is connected to the rotating shaft 32 via a ball joint 321, and the outer edge is mounted with a transmission shaft 34. The transmission gear 341 on the transmission shaft 34 is capable of engaging with the ring gear 372 on the drive ring 37. A support frame 36 is also mounted on the rotating shaft 32, and the height of the transmission shaft 34 can be adjusted using a telescopic rod 362. After a round of coating, the device does not require deflation to adjust the lens. Instead, the carrier 33 can be directly raised, and the drive ring 37 drives the carrier 33 to rotate and flip over, then fall back into an umbrella-like configuration for a second round of coating, significantly improving the efficiency of the negative electrode.

[0039] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An optical lens coating device, comprising a vacuum machine; characterized in that: The vacuum machine is provided with a clamping system; the clamping system includes 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 includes a carrier frame connected to the ball joint, a transmission shaft is connected to the middle of the end of the carrier frame away from the ball joint, and a transmission gear is installed on the transmission shaft; a drive ring is rotatably installed on the inner wall of the vacuum machine, and a gear ring meshing with the transmission gear is provided on the bottom surface of the drive 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 connecting sleeve Cylinder; a primary motor is installed in the vacuum machine, and the primary motor is connected to a rotating shaft, and a spring is sleeved on the rotating shaft, one end of the spring is connected to the 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; an annular limiting groove is fixedly installed in the vacuum machine, the driving ring is located in the limiting groove, and a rack is provided on the surface of the driving ring, and a secondary motor is installed on the limiting groove, and the secondary motor is connected to a driving gear, and the driving gear is meshed with the rack; 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, and the positioning ring is located at the edge of the carrier, and the inner side of the positioning ring protrudes toward the carrier.

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 opened on the loading plate, a cover plate covering the loading plate is installed on the loading frame, and through holes are opened on the cover plate that correspond to the positions of the lens holes and match the shapes.

3. The optical lens coating device according to claim 1 or 2, characterized in that: A plurality of connecting pieces are provided on the edge of the 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 base is provided inside the vacuum machine, an evaporation source is provided on the base, a plurality of heating lamps surrounding the evaporation source are provided on the base, and a vent is provided on the inner wall of the vacuum machine.

5. The optical lens coating device according to claim 4, 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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