A progressive multifocal lens and its coating process

Abstract

The present invention relates to a progressive multifocal lens and a coating process thereof, comprising a lens, wherein the lens is a convex lens, the convex lens comprising a myopia zone with a myopia focus and a hyperopia zone with a hyperopia focus, the myopia zone being located within the hyperopia zone and being located at the lower portion of the convex lens, the myopia focus and the hyperopia focus being both on the vertical midline of the lens, the focal length of the myopia focus being 25 cm, and the focal length of the hyperopia focus being 45 cm, both sides of the lens being coated with an anti-blue light protective film, and the lens being automatically flipped over during the coating process by the provision of a flipping device, thereby enabling both coated sides to be evenly coated, and the original upper surface or lower surface of the lens being completely exposed and not covered when the coating is performed on the upper side, thereby enabling both sides of the lens to be fully coated and improving the working efficiency of the coating.

Description

Technical Field

[0001] The present invention relates to the technical field of lens processing, and in particular to a progressive addition lens and a coating process thereof. Background Art

[0002] Progressive multifocal lenses need to be coated with anti-blue light after processing, but the existing coating equipment is not convenient for coating both sides in a single clamping process. After coating one side, it is necessary to manually flip it over to the other side for coating, which reduces the coating efficiency and increases labor costs. Summary of the Invention

[0003] (1) Technical problems to be solved

[0004] The purpose of the present invention is to overcome the shortcomings of the existing technology, meet practical needs, and provide a progressive multifocal lens and its coating process that can automatically perform double-sided coating on the lens, thereby improving work efficiency, so as to solve the above technical problems.

[0005] (2) Technical solution

[0006] In order to achieve the purpose of the present invention, the technical solution adopted by the present invention is:

[0007] A progressive multifocal lens comprises a lens, which is a convex lens. The convex lens includes a nearsighted area with a nearsighted focus and a farsighted area with a farsighted focus. The nearsighted area is located within the farsighted area and is located at the lower part of the convex lens. The nearsighted focus and the farsighted focus are both on the vertical midline of the lens. The focal length of the nearsighted focus is 25 cm, and the focal length of the farsighted focus is 45 cm. Both sides of the lens are coated with an anti-blue light protective film.

[0008] A coating process for a progressive addition lens, comprising the following steps:

[0009] S1. manually placing the progressive addition lens in a coating device, and then coating the progressive addition lens using the coating device;

[0010] S2, a coating device coats the first surface and the second surface of the lens respectively;

[0011] S3, the coating equipment automatically unloads the coated lenses onto the conveyor belt, and then sends them away via the conveyor belt;

[0012] The processes described in the above steps S1-S3 are completed by a conveyor belt and a coating device; the coating device includes a working shell, a working chamber is provided in the working shell, a front side surface of the working shell is provided with a feed port connected to the working chamber, an electric sliding door is provided on the feed port for sealing the feed port, a vacuum pump is fixedly provided on one side surface of the working shell, the inlet of the vacuum pump is connected to the working chamber, a pulse laser sputtering deposition device is fixedly provided on the upper side surface of the working shell, the pulse laser sputtering deposition device has a plurality of nozzles, the plurality of nozzles respectively penetrate into the working shell and are connected to the working chamber, the working A mounting plate is fixedly provided on the rear side surface of the shell, a working cylinder is fixedly provided on the mounting plate, an electric motor is fixedly provided on the piston rod of the working cylinder, a flip device is provided on the output shaft of the electric motor, the rear side surface of the working shell has a cylindrical groove connected to the working chamber, a cylindrical tube is fixedly provided in the cylindrical groove, the inner wall of the cylindrical groove is sealed with the outer circumferential wall of the cylindrical tube, the cylindrical tube is connected to the working chamber, the piston rod of the working cylinder can be reciprocated and penetrated into the cylindrical tube, and the outer circumferential wall of the piston rod of the working cylinder is always sealed with the inner wall of the cylindrical tube during the movement.

[0013] The flipping device includes a connecting shaft fixedly arranged on the output shaft of the motor, a placement plate fixedly arranged at one end of the connecting shaft away from the motor, a plurality of placement through holes arranged on the placement plate, a first sliding component arranged on one side surface of the placement plate along the thickness direction, a second sliding component arranged on the other side surface of the placement plate along the thickness direction, and a first mating rod fixedly arranged on the top of the inner wall of the cylindrical tube.

[0014] The cam is secured to the chassis and has a first end in contact with the first slide, the second end being secured to the chassis with a second spring which is secured to the chassis with a second spring which is secured to the chassis with a second spring which is secured to the chassis with a second spring which is secured to the chassis with a second spring which is secured to the chassis with a second spring which is secured to the chassis with a

[0015] The second sliding assembly includes a third through-slot provided on the connecting shaft along the length direction of the placing plate, and the second sliding assembly is provided on the connecting shaft along the thickness direction of the placing plate, and the third through-slot is connected to the fourth through-slot, and a fourth rod that can move back and forth is provided in the third through-slot, and a fifth rod is fixed on the fourth rod, and the fifth rod can move back and forth in the fourth through-slot, and a second tension spring is fixed between the fifth rod and the side wall of the fourth through-slot, and a sixth rod is fixed at each end of the fifth rod, and a second push plate is fixed at one end of the two sixth rods away from the fourth rod, and the second push plate has a plurality of second openings, and when the connecting shaft rotates counterclockwise to make the fifth rod be in a direction perpendicular to the ground, the plurality of second openings are aligned with the plurality of placement through holes one by one under the push of the fifth rod by the first matching rod.

[0016] A stop block is fixedly provided on the lower inner wall of the cylindrical tube, and the straight-line distance between the side surface of the placement plate facing the connecting shaft and the side surface of the conveyor belt facing the working shell is defined as the reference distance, and the straight-line distance from the stop block to the fifth rod is 1.2-1.3 times the reference distance, the width of the conveyor belt is twice the width of the placement plate, the side surface of the stop block facing the fifth rod is an inclined surface, and the fifth rod is cylindrical.

[0017] (3) Beneficial effects:

[0018] A. The flipping device can automatically flip the lens during the coating process, so that both sides of the coating can be evenly coated. When the original upper or lower surface of the lens is located at the top for coating, it will be completely exposed and not covered, so that both sides of the lens can be fully coated, and the coating efficiency can be improved.

[0019] B. Through the cooperation of the stop block and the flip device, the lens can be automatically unloaded after the coating is completed, without the need for manual unloading, thus making the equipment more automated and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of a progressive addition lens according to the present invention;

[0021] Figure 2 It is a schematic diagram of the three-dimensional structure of the coating equipment;

[0022] Figure 3 It is a schematic diagram of the top view of the coating equipment;

[0023] Figure 4 This is a schematic diagram of the main structure of the coating equipment;

[0024] Figure 5 for Figure 4 Schematic diagram of the cross-sectional structure at AA in FIG;

[0025] Figure 6 It is a schematic diagram of the internal cross-sectional structure of the turning device;

[0026] Figure 7 for Figure 4 Schematic diagram of the cross-sectional structure at BB in FIG;

[0027] Figure 8 for Figure 3 Schematic diagram of the cross-sectional structure at CC in FIG;

[0028] Figure 9 for Figure 8 The enlarged view of point D in the figure;

[0029] Figure 10 This is a schematic diagram of the position of the fifth rod and the stop block when the fifth rod moves during lens unloading. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-10 The present invention is further described with examples:

[0031] A progressive multifocal lens includes a lens, which is a convex lens. The convex lens includes a nearsighted zone 3 with a nearsighted focus 2 and a farsighted zone 5 with a farsighted focus 4. The nearsighted zone 3 is located within the farsighted zone 4, and the nearsighted zone 3 is located at the bottom of the convex lens. The nearsighted focus 2 and the farsighted focus 4 are both on the vertical midline of the lens. The focal length of the nearsighted focus is 25 cm, and the focal length of the farsighted focus is 45 cm. Both sides of the lens are coated with an anti-blue light protective film.

[0032] A coating process for a progressive addition lens comprises the following steps:

[0033] S1. manually placing the progressive addition lens in a coating device, and then coating the progressive addition lens using the coating device;

[0034] S2, a coating device coats the first surface and the second surface of the lens respectively;

[0035] S3, the coating equipment automatically unloads the coated lenses and places them on the conveyor belt, and then sends them away by the conveyor belt; the above steps S1-S3 are completed by the conveyor belt and the coating equipment; the coating equipment includes a working shell 10, the working shell 10 has a working chamber 11, the front side of the working shell 10 has a feed port 12 connected to the working chamber 11, the feed port 12 is provided with an electric sliding door 13 for sealing the feed port 12, a vacuum pump 14 is fixedly provided on one side of the working shell 10, the inlet of the vacuum pump 14 is connected to the working chamber 11, a pulsed laser sputtering deposition device 22 is fixedly provided on the upper side of the working shell 10 (the pulsed laser sputtering deposition device 22 is a prior art, so the structure is not repeated), the pulsed laser sputtering deposition device 22 has a plurality of nozzles 23, the plurality of nozzles 23 respectively penetrate into the working shell 10 and are connected to the working chamber 11, and a mounting plate is fixedly provided on the rear side of the working shell 10

[0036] 24. A working cylinder 15 is fixedly provided on the mounting plate 24. An electric motor 16 is fixedly provided on the piston rod of the working cylinder 15. A flip device is provided on the output shaft of the electric motor 16. The rear side surface of the working shell 10 has a cylindrical groove 17 connected with the working chamber 11. A cylindrical tube 18 is fixedly provided in the cylindrical groove 17. The inner wall of the cylindrical groove 17 is sealed with the outer peripheral wall of the cylindrical tube 18. The cylindrical tube 18 is connected with the working chamber 11. The piston rod of the working cylinder 15 can be reciprocated and inserted into the cylindrical tube 18. The outer peripheral wall of the piston rod of the working cylinder 15 is always sealed with the inner wall of the cylindrical tube 18 during the movement. The conveyor belt 500 is located on one side of the electric sliding door 13.

[0037] The flipping device includes a connecting shaft 30 fixedly set on the output shaft of the motor 16, and a placement plate 31 is fixedly set at the end of the connecting shaft 30 away from the motor 16. A plurality of placement through holes 33 are set on the placement plate 31. One side surface of the placement plate 31 along the thickness direction has a first sliding component, and the other side surface of the placement plate 31 along the thickness direction has a second sliding component. A first mating rod 101 is fixedly set on the top of the inner wall of the cylindrical tube 18.

[0038] The first sliding assembly includes a first through slot 40 provided on the connecting shaft 30 along the length direction of the placing plate 31, and a second through slot 41 provided on the connecting shaft 30 along the thickness direction of the placing plate 31. The first through slot 40 is connected to the second through slot 41. A first reciprocating rod 42 is provided in the first through slot 40, and a second rod 43 is fixed on the first rod 42. The second rod 43 can reciprocate in the second through slot 41. A first tension spring 44 is fixed between the second rod 43 and the side wall of the second through slot 41. A third rod 45 is fixed at each end of the first rod 42, and a first push plate 46 is fixed at one end of the two third rods 45 away from the first rod 42. The first push plate 46 has multiple first openings 47. When the connecting shaft 30 rotates clockwise to make the second rod 43 in a direction perpendicular to the ground, the second rod 43 is pushed by the first matching rod 101, and the multiple first openings 47 are aligned one by one with the multiple placement through holes 33.

[0039] The second sliding assembly includes a third through slot 50 provided on the connecting shaft 30 along the length direction of the placing plate 31, and the second sliding assembly is provided on the fourth through slot 51 on the connecting shaft 30 along the thickness direction of the placing plate 31. The third through slot 50 is connected to the fourth through slot 51, and a fourth rod 52 that can move back and forth is provided in the third through slot 50. A fifth rod 53 is fixedly provided on the fourth rod 52, and the fifth rod 53 can move back and forth in the fourth through slot 51. A second tension spring 54 is fixedly provided between the fifth rod 53 and the side wall of the fourth through slot 51, and a sixth rod 55 is fixedly provided at both ends of the fifth rod 52, and a second push plate 56 is fixedly provided at one end of the two sixth rods 55 away from the fourth rod 52, and the second push plate 56 has a plurality of second openings 57. When the connecting shaft 30 rotates counterclockwise so that the fifth rod 53 is in a direction perpendicular to the ground, under the push of the fifth rod 53 by the first matching rod 101, the plurality of second openings 57 are aligned one by one with the plurality of placement through holes 33. Place the lens to be coated into the plurality of placement holes 33 (one lens is placed in one placement hole, at this time the first opening 47 in the coating equipment is opposite to the placement hole 33, and the second opening 57 is staggered with the placement hole 33, as shown in FIG. Figure 6As shown), the working chamber 11 is sealed through the working housing 10, and the vacuum pump 14 is started to evacuate the working chamber 11, and then the pulse laser sputtering deposition device 22 is started to coat the upper surface placed in the placement through hole 33. After the coating of the upper surface of the placement through hole 33 is completed, the motor 16 is started to flip the placement plate 31 180°. During the flipping process, the second rod 43 will gradually move away from the first matching rod 101. After losing the obstruction of the first matching rod 101, the second rod 43 will be pulled back to its original position under the action of the first tension spring 44 (that is, the first tension spring 44 is shortened and reset), and the second rod 43 will also carry the first rod 42, the third rod 45, and the third rod 46. When the push plate 46 moves, the first opening 47 is staggered with the placement through hole 33 (that is, completely disconnected), and then when the fifth rod 53 rotates, it approaches the first matching rod 101. When the fifth rod 53 conflicts with the first matching rod 101, it pushes the fifth rod 53 to move (that is, the second tension spring 54 is stretched), and the fifth rod 53 also moves with the fourth rod 52, the sixth rod 55, and the second push plate 56, that is, the second opening 57 is connected to the placement through hole 33. At this time, the original lower surface of the lens is rotated to the top and is completely exposed and not covered by the second push plate 56, so that both sides of the lens can be fully coated, and the coating work efficiency can also be improved.

[0040] A stopper 200 is fixedly provided on the lower inner wall of the cylindrical tube 18. The straight-line distance between the side of the placement plate 31 facing the connecting shaft 30 and the side of the conveyor belt 500 facing the working housing 10 is defined as the reference distance. The straight-line distance from the stopper 200 to the fifth rod 53 is 1.2-1.3 times the reference distance. The width of the conveyor belt 500 is twice the width of the placement plate 31. The side of the stopper 200 facing the fifth rod 53 is an inclined surface, and the fifth rod 53 is cylindrical. When both sides are coated, the motor rotates 180 degrees to allow the second rod 43 to be directly above again (i.e., back to the position as shown in FIG. 1 ). Figure 9 The working cylinder 15 starts to push the fifth rod 53 to move outwards. At the same time, the placing plate 31 is also moved to the top of the conveyor belt 500. Under the cooperation of the fifth rod 53 and the block 200 (as shown in FIG. Figure 10 ), the fifth rod 53 is pushed (that is, the second tension spring 54 is stretched), and the second push plate 56 moves with the fifth rod 53, that is, the second opening 57 is aligned with the placement through hole 33, and the coated lenses fall onto the conveyor belt and are sent away, thereby eliminating the need for manual unloading of the coated lenses in the coating equipment one by one, thereby achieving automatic unloading, making it convenient for the operator to directly load the next batch of lenses that need to be coated, thereby improving work efficiency.

[0041] The working principle of the present invention includes the following process:

[0042] The operator places the lens to be coated into the plurality of placement holes 33 (one lens is placed in one placement hole, at this time the first opening 47 in the coating equipment is opposite to the placement hole 33, and the second opening 57 is staggered with the placement hole 33, as shown in FIG. Figure 6 As shown), the working chamber 11 is then sealed through the working housing 10, and the vacuum pump 14 is started to evacuate the working chamber 11, and then the pulsed laser sputtering deposition device 22 is started to coat the upper surface placed in the placement through hole 33. After the coating of the upper surface of the placement through hole 33 is completed, the motor 16 is started to flip the placement plate 31 180°. During the flipping process, the second rod 43 will gradually move away from the first matching rod 101. After losing the obstruction of the first matching rod 101, the second rod 43 will be pulled back to its original position under the action of the first tension spring 44. (In Figure 9 The direction in is counterclockwise rotation) (i.e., the first tension spring 44 is shortened and reset), the second rod 43 will also move the first rod 42, the third rod 45, and the first push plate 46, that is, the first opening 47 is staggered with the placement through hole 33 (i.e., completely disconnected), and then when the fifth rod 53 is rotated, it will approach the first matching rod 101. When the fifth rod 53 conflicts with the first matching rod 101, it will push the fifth rod 53 to move (i.e., the second tension spring 54 is extended), and the fifth rod 53 will also move the fourth rod 52, the sixth rod 55, and the second push plate 56, that is, the second opening 57 is connected to the placement through hole 33. At this time, the original lower surface of the lens will be rotated upward and completely exposed without being covered by the second push plate 56, so that both sides of the lens can be fully coated, and the coating work efficiency can also be improved;

[0043] When both sides are coated, the motor rotates 180 degrees to allow the second rod 43 to be located just above (ie, by rotating clockwise back to the position shown in FIG. Figure 9 The working cylinder 15 starts to push the fifth rod 53 to move outwards. At the same time, the placing plate 31 is also moved to the top of the conveyor belt 500. Under the cooperation of the fifth rod 53 and the block 200 (as shown in FIG. Figure 10 ), the fifth rod 53 is pushed (that is, the second tension spring 54 is stretched), and the second push plate 56 moves with the fifth rod 53, that is, the second opening 57 is aligned with the placement through hole 33, and the coated lenses fall onto the conveyor belt and are sent away, thereby eliminating the need for manual unloading of the coated lenses in the coating equipment one by one, thereby achieving automatic unloading, making it convenient for the operator to directly load the next batch of lenses that need to be coated, thereby improving work efficiency.

[0044] The embodiments disclosed in the present invention are preferred embodiments, but are not limited to them. Ordinary technicians in this field can easily understand the spirit of the present invention based on the above embodiments and make different extensions and changes. As long as they do not deviate from the spirit of the present invention, they are all within the scope of protection of the present invention.

Claims

1. A coating process for coating progressive addition lenses, characterized by: The progressive multifocal lens comprises a lens, which is a convex lens, comprising a myopia zone (3) having a myopia focus (2) and a hyperopia zone (5) having a hyperopia focus (4), wherein the myopia zone (3) is located within the hyperopia zone (4), and the myopia zone (3) is located at the lower part of the convex lens, the myopia focus (2) and the hyperopia focus (4) are both on the vertical midline of the lens, the focal length of the myopia focus is 25 cm, and the focal length of the hyperopia focus is 45 cm, and both sides of the lens are coated with an anti-blue light protective film; The coating process steps are: S1. manually placing the progressive addition lens in a coating device, and then coating the progressive addition lens using the coating device; S2, a coating device coats the first surface and the second surface of the lens respectively; S3, the coating equipment automatically unloads the coated lenses onto the conveyor belt (500), and then sends them away using the conveyor belt (500); The above steps S1-S3 are completed by a conveyor belt (500) and a coating device; the coating device includes a working shell (10), the working shell (10) has a working chamber (11), the front side of the working shell (10) has a feed port (12) connected to the working chamber (11), the feed port (12) is provided with an electric sliding door (13) for sealing the feed port (12), and a vacuum pump (14) is fixedly provided on one side of the working shell (10), the vacuum pump (14) is provided on the front side of the working shell (10), and the vacuum pump (14) is provided on the front side of the working shell (10). The inlet of the pump (14) is connected to the working chamber (11), a pulse laser sputtering deposition device (22) is fixedly provided on the upper side of the working shell (10), and the pulse laser sputtering deposition device (22) has a plurality of nozzles (23), and the plurality of nozzles (23) respectively penetrate the working shell (10) and are connected to the working chamber (11), and a mounting plate (24) is fixedly provided on the rear side of the working shell (10), and a working cylinder (15) is fixedly provided on the mounting plate (24). ), a motor (16) is fixedly provided on the piston rod of the working cylinder (15), a flip device is provided on the output shaft of the motor (16), the rear side surface of the working housing (10) has a cylindrical groove (17) connected to the working chamber (11), a cylindrical tube (18) is fixedly provided in the cylindrical groove (17), the inner wall of the cylindrical groove (17) is sealed with the outer peripheral wall of the cylindrical tube (18), the cylindrical tube (18) is connected to the working chamber (11), the working cylinder (15) is provided with a motor (16), the output shaft of the motor (16) is provided with a flip device, the rear side surface of the working housing (10) has a cylindrical groove (17) connected to the working chamber (11), the ... working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder (15) is provided with a motor (16), the working cylinder ( The piston rod of the cylinder (15) can be reciprocated and penetrated into the cylindrical tube (18), and the outer peripheral wall of the piston rod of the working cylinder (15) is always sealed against the inner wall of the cylindrical tube (18) during the movement; when the front side is plated, the first opening (47) is opposite to the placement through hole (33), and the second opening (57) is staggered with the placement through hole (33); when the back side is plated, the first opening (47) is staggered with the placement through hole (33), and the second opening (57) is directly connected to the placement through hole (33).

2. The coating process for progressive addition lenses according to claim 1, wherein: The flipping device includes a connecting shaft (30) fixedly arranged on the output shaft of the motor (16); a placement plate (31) is fixedly arranged at one end of the connecting shaft (30) away from the motor (16); a plurality of placement through holes (33) are provided on the placement plate (31); a first sliding component is provided on one side surface of the placement plate (31) along the thickness direction; a second sliding component is provided on the other side surface of the placement plate (31) along the thickness direction; and a first matching rod (101) is fixedly provided on the top of the inner wall of the cylindrical tube (18).

3. The coating process for coating a progressive addition lens according to claim 2, wherein: The first sliding assembly comprises a first through slot (40) provided on the connecting shaft (30) along the length direction of the placement plate (31); the second sliding assembly comprises a second through slot (41) provided on the connecting shaft (30) along the thickness direction of the placement plate (31); the first through slot (40) is communicated with the second through slot (41); a first rod (42) that can move back and forth is provided in the first through slot (40); a second rod (43) is fixedly provided on the first rod (42); the second rod (43) can move back and forth in the second through slot (41); the second rod (43) is in contact with the A first tension spring (44) is fixedly provided between the side walls of the second through slot (41), and third rods (45) are fixedly provided at both ends of the first rod (42), and a first push plate (46) is fixedly provided at one end of the two third rods (45) away from the first rod (42), and the first push plate (46) has a plurality of first openings (47). When the connecting shaft (30) rotates clockwise to make the second rod (43) in a direction perpendicular to the ground, the second rod (43) is pushed by the first matching rod (101), and the plurality of first openings (47) are aligned with the plurality of placement through holes (33) one by one.

4. The coating process for coating a progressive addition lens according to claim 3, wherein: The second sliding assembly includes a third through slot (50) provided on the connecting shaft (30) along the length direction of the placement plate (31), and a fourth through slot (51) provided on the connecting shaft (30) along the thickness direction of the placement plate (31). The third through slot (50) is communicated with the fourth through slot (51). A fourth rod (52) that can move back and forth is provided in the third through slot (50). A fifth rod (53) is fixedly provided on the fourth rod (52). The fifth rod (53) can move back and forth in the fourth through slot (51). The fifth rod (53) is connected to the fourth through slot (51). A second tension spring (54) is fixedly provided between the side walls of the fourth through slot (51), and a sixth rod (55) is fixedly provided at both ends of the fifth rod (52), and a second push plate (56) is fixedly provided at one end of the two sixth rods (55) away from the fourth rod (52), and the second push plate (56) has a plurality of second openings (57). When the connecting shaft (30) rotates counterclockwise to make the fifth rod (53) in a direction perpendicular to the ground, the fifth rod (53) is pushed by the first matching rod (101), and the plurality of second openings (57) are aligned with the plurality of placement through holes (33) one by one.

5. The coating process for coating a progressive addition lens according to claim 4, wherein: A stopper (200) is fixedly provided on the lower inner wall of the cylindrical tube (18), and a straight-line distance between the side surface of the placement plate (31) close to the connecting shaft (30) and the side surface of the conveyor belt (500) facing the working shell (10) is defined as a reference distance, and a straight-line distance from the stopper (200) to the fifth rod (53) is 1.2-1.3 times of the reference distance, the width of the conveyor belt (500) is twice the width of the placement plate (31), the side surface of the stopper (200) facing the fifth rod (53) is an inclined surface, and the fifth rod (53) is cylindrical.

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