Lens coating tool

Abstract

The utility model relates to lens coating technology field discloses a kind of lens coating tool, including base and baffle, the base and the baffle are detachably connected along first direction, the recess is equipped in the side of the base towards the baffle, the base is equipped with through hole along first direction, the through hole is communicated with the recess, the inner wall of one end of the through hole towards the baffle is equipped with support plate;The baffle is equipped with coating hole, the coating hole and the through hole are communicated along first direction;Wherein, the through hole is used to accommodate lens;The support plate is used to support lens;The coating hole is used to make the coating area of lens exposed.This coating tool can reduce the difficulty of baffle disassembly after completing coating.

Description

Technical Field

[0001] This utility model relates to the field of lens coating technology, and in particular to a lens coating tooling. Background Technology

[0002] Lens coating primarily increases lens hardness, scratch resistance, and blocks ultraviolet rays. However, for beam splitters, different coatings with different functions need to be applied to different locations on the lens. Therefore, multiple shielding plates are required to block different coating areas, and multiple coating processes using evaporation are performed. Furthermore, after each coating, the lens needs to be removed for inspection and cleaning. During this process, because the coating is performed in a high-temperature vacuum environment, the base and shielding plates become tightly adhered after coating, making it difficult to remove the shielding plates. This increases the difficulty of operation for workers and reduces production efficiency.

[0003] CN202223472268 discloses a coating-partitioned lens coating fixture. The lens has a partially overlapping first coating layer and a second coating layer deposited on its coating surface. The coating fixture includes a substrate for embedding the lens and exposing the coating surface of the first coating layer. A shielding member is positioned and mounted on the substrate to expose the second coating layer area on the first coating layer. This coating fixture achieves high relative positional accuracy for the partitioned coating operation of the lens and can simultaneously coat multiple lenses. However, since there is no corresponding structure to adjust the air pressure between the substrate and the shielding member, the shielding member may not be easy to remove after coating is completed.

[0004] The technical problem that this utility model needs to solve is: how to reduce the difficulty of disassembling the coating tooling after coating is completed. Utility Model Content

[0005] The main purpose of this utility model is to provide a lens coating fixture, which uses a through hole and a support plate to place the lens, and a groove is provided on the base so that the groove is connected to the through hole. After the coating is completed, outside air can enter the groove through the through hole, so that the air pressure between the shielding plate and the base is equal to the atmospheric pressure, which makes it easier for the staff to remove the shielding plate.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0007] A lens coating fixture includes a base and a shielding plate, which are detachably connected along a first direction. The base has a groove on the side facing the shielding plate and a through hole extending along the first direction. The through hole communicates with the groove. A support plate is provided on the inner wall of the end of the through hole facing the shielding plate. The shielding plate has a coating hole, which communicates with the through hole along the first direction.

[0008] The through-hole is used to accommodate the lens; the support plate is used to support the lens; and the coating hole is used to expose the coating area of ​​the lens.

[0009] Preferably, the depth of the groove is equal to the thickness of the support plate.

[0010] Preferably, a baffle is provided on the periphery of the side of the coating hole facing the base; the length of the baffle extends along the first direction, and the length of the baffle is equal to the thickness of the support plate.

[0011] Preferably, the coating hole includes a gradient section and a straight section; the gradient section and the straight section are connected along a first direction, the gradient section is located on the side of the straight section away from the base along the first direction, and the space of the gradient section gradually increases along the direction away from the base.

[0012] Preferably, the through hole is circular in shape; the inner wall of the through hole is connected to a first anti-mistake platform and a second anti-mistake platform, which are arranged opposite to each other along the radial direction of the through hole.

[0013] Preferably, the base has a second direction and a third direction. The second direction is the arrangement direction between the first and second error-proof platforms. The first, second, and third directions are perpendicular to each other. The orthographic projection of the first error-proof platform onto the shielding plate along the first direction is the first projection. The orthographic projection of the second error-proof platform onto the shielding plate along the first direction is the second projection. Along the third direction, the length of the first projection is greater than the length of the second projection.

[0014] Preferably, along the second direction, clearance holes are provided at the junctions of the two ends of the first anti-mistake platform and the inner wall of the through hole, and at the junctions of the two ends of the second anti-mistake platform and the inner wall of the through hole, with the depth direction of the clearance holes extending along the first direction.

[0015] Preferably, the side of the baffle facing the base is provided with a positioning hole; the side of the base facing the baffle is provided with a positioning post that matches the positioning hole, and the positioning post is inserted into the positioning hole.

[0016] Compared with existing technologies, this solution has the following advantages:

[0017] The coating fixture in this case uses through holes and support plates to place the lens, and a groove is set on the base so that the groove is connected to the through hole. The end of the through hole away from the shielding plate contacts the clamping table on the evaporation coating machine, and the other end contacts the shielding plate. After the coating is completed, since the end of the through hole away from the shielding plate is not fixed by a fixing plate, outside air can easily pass into the groove from the gap between the through hole and the lens, so that the air pressure between the shielding plate and the base is equal to the atmospheric pressure, making it easy for the staff to remove the shielding plate. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the coating area of ​​the lens in Example 1;

[0019] Figure 2 This is a schematic diagram of the coating fixture in Example 1;

[0020] Figure 3 This is a structural schematic diagram of the base (back side) of Example 1;

[0021] Figure 4 This is a schematic diagram of the structure of the shielding sheet (back side) used for coating irregular areas in Example 1;

[0022] Figure 5 This is a schematic diagram of the shielding sheet (front side) used for coating irregular areas in Example 1;

[0023] Figure 6 This is a schematic diagram of the structure of the shielding sheet (back side) used for coating a rectangular area in Example 1.

[0024] The components include: base 1; shielding plate 2; coating hole 3; through hole 4; support plate 5; groove 6; baffle 7; first anti-mistake platform 8; second anti-mistake platform 9; clearance hole 10; positioning post 11; positioning hole 12; gradient section 31; and straight section 32. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of this application implemented as described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0026] Example 1

[0027] refer to Figure 1-6 A lens coating fixture includes a base 1 and a shielding plate 2. The base 1 and the shielding plate 2 are detachably connected along a first direction. The side of the base 1 facing the shielding plate 2 is provided with a groove 6. The base 1 is provided with a through hole 4 extending along the first direction. The through hole 4 communicates with the groove 6. The inner wall of the end of the through hole 4 facing the shielding plate 2 is provided with a support plate 5. The shielding plate 2 is provided with a coating hole 3. The coating hole 3 and the through hole 4 communicate along the first direction.

[0028] Among them, the through hole 4 is used to accommodate the lens; the support plate 5 is used to support the lens; and the coating hole 3 is used to expose the coating area of ​​the lens.

[0029] In this embodiment, the lens is a beam splitter, requiring coating on eight areas on both the front and back surfaces. The coating areas of the lens are as follows: Figure 1As shown, the coating area has two shapes: rectangular and irregular. The two rectangular coating areas and two irregular coating areas on each surface of the lens are centrally symmetrical. Therefore, there are four shielding plates 2, and the coating holes 3 of the four shielding plates 2 match the shape of the coating area.

[0030] The process of using the coating fixture is as follows: The operator places the lens into the through hole 4 and continues to press the lens so that it overlaps the support plate 5. Then, the operator detachably connects the shielding plate 2 corresponding to the coating area to the side of the base 1 facing the support plate 5 by means of bolts. The operator then connects the end of the base 1 away from the shielding plate 2 to the fixed table of the external evaporation coating machine. This process is repeated to coat the 8 areas of the lens.

[0031] It should be noted that by setting the groove 6, after each coating is completed, since the lens is fixed by the through hole 4 and the support plate 5, and there is a gap between the through hole 4 and the lens, when the coating fixture is taken out of the evaporation coating machine, the outside air enters into the groove 6 through the gap between the through hole 4 and the lens. The groove 6 is located between the shielding plate 2 and the base 1, so that the air pressure between the shielding plate 2 and the base 1 is equal to the atmospheric pressure, which makes it easier for the staff to disassemble the shielding plate 2 and the lens, and avoids the situation that the coating fixture is not easy to disassemble after passing through the high temperature vacuum environment.

[0032] Preferably, the depth of the groove 6 is equal to the thickness of the support plate 5.

[0033] In this embodiment, this setting can achieve communication between the groove 6 and the through hole 4, and also avoid the groove 6 being too deep, which would cause the inner wall of the through hole 4 to have a sharp point that would scratch the outer surface of the lens when the lens is placed.

[0034] Preferably, a baffle 7 is provided on the periphery of the side of the coating hole 3 facing the base 1; the length of the baffle 7 extends along the first direction, and the length of the baffle 7 is equal to the thickness of the support plate 5.

[0035] In this embodiment, the area enclosed by the baffle 7 is the shape of the coating area of ​​the lens. After the shielding plate 2 is installed on the base 1, the free end of the baffle 7 will contact the surface of the lens to form an effective coating area, preventing phenomena such as false edges, shadows, and missing coatings.

[0036] Preferably, the coating hole 3 includes a gradient section 31 and a straight section 32; the gradient section 31 and the straight section 32 are connected along a first direction, the gradient section 31 is located on the side of the straight section 32 away from the base 1 along the first direction, and the space of the gradient section 31 gradually increases along the direction away from the base 1.

[0037] In this embodiment, the gradient section 31 and the straight section 32 are located on the same axis. The baffle 7 is disposed at one end of the shielding plate 2 near the base 1, and the baffle 7 is connected to one end of the straight section 32 along the contour edge of the coating hole 3. By providing the gradient section 31, the coating hole 3 facilitates better deposition of the vapor-deposited material on the lens.

[0038] Preferably, the through hole 4 is circular in shape; the inner wall of the through hole 4 is connected to a first anti-mistake platform 8 and a second anti-mistake platform 9, which are arranged opposite to each other along the radial direction of the through hole 4.

[0039] In this embodiment, the shape of the lens matches the shape formed by the through hole 4, the first anti-mistake platform 8, and the second anti-mistake platform 9. In this way, it is easy to distinguish the coating area of ​​the lens, and it can ensure that the staff can distinguish whether the coating areas on the front and back of the lens are aligned.

[0040] Preferably, the base 1 has a second direction and a third direction. The second direction is the arrangement direction between the first anti-mistake platform 8 and the second anti-mistake platform 9. The first direction, the second direction, and the third direction are perpendicular to each other. The orthographic projection of the first anti-mistake platform 8 onto the shielding plate 2 along the first direction is the first projection. The orthographic projection of the second anti-mistake platform 9 onto the shielding plate 2 along the first direction is the second projection. Along the third direction, the length of the first projection is greater than the length of the second projection.

[0041] In this embodiment, since the coating process is different for each coating area of ​​the lens, the operator needs to clearly understand the order of each coating area and use the corresponding coating process. Setting up a first error-proof platform 8 and a second error-proof platform 9 allows the operator to distinguish the positions of irregularly shaped and rectangular coating areas on the front and back of the lens. Furthermore, by setting the length of the first projection of the first error-proof platform 8 and the length of the second projection of the second error-proof platform 9 to be different, the operator can further distinguish the positions of each rectangular and irregularly shaped coating area.

[0042] It should be noted that the lens is a semi-finished lens during the coating process. After the coating is completed, the outer peripheral surface of the semi-finished lens needs to be ground to make the finished lens round.

[0043] Preferably, along the second direction, clearance holes 10 are provided at the junctions of the two ends of the first anti-mistake platform 8 and the inner wall of the through hole 4, and at the junctions of the two ends of the second anti-mistake platform 9 and the inner wall of the through hole 4, and the depth direction of the clearance holes 10 extends along the first direction.

[0044] In this embodiment, both ends of the first anti-mistake platform 8 and the second anti-mistake platform 9 are provided with clearance holes 10 at the junction with the inner wall of the through hole 4. When placing the lens, the junction is prone to collision with the lens, which may cause damage to the lens. Therefore, clearance holes 10 are provided at the junction to prevent the lens from being damaged at the junction and causing chipping.

[0045] Preferably, the side of the baffle plate 7 facing the base 1 is provided with a positioning hole 12; the side of the base 1 facing the baffle plate 7 is provided with a positioning post 11 that matches the positioning hole 12, and the positioning post 11 is inserted into the positioning hole 12.

[0046] In this embodiment, when the shielding plate 2 is installed on the base 1, the positioning accuracy between the shielding plate 2 and the base 11 is improved by setting the positioning post 11 and the positioning hole 12, thereby ensuring that the coating hole 3 on the shielding plate 2 can be aligned with the coating area on the lens, and improving the coating accuracy.

[0047] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A lens coating fixture, characterized in that, The device includes a base and a shielding plate, which are detachably connected along a first direction. The base has a groove on the side facing the shielding plate and a through hole extending along the first direction. The through hole communicates with the groove. A support plate is provided on the inner wall of the end of the through hole facing the shielding plate. The shielding plate has a coating hole, which communicates with the through hole along the first direction. The through hole is used to accommodate the lens; the support plate is used to support the lens; and the coating hole is used to expose the coating area of ​​the lens.

2. The lens coating fixture according to claim 1, characterized in that, The depth of the groove is equal to the thickness of the support plate.

3. The lens coating fixture according to claim 1, characterized in that, The coating hole has baffles around its perimeter on the side facing the base; the length of the baffles extends along a first direction, and the length of the baffles is equal to the thickness of the support plate.

4. The lens coating fixture according to claim 1, characterized in that, The coating hole includes a gradient section and a straight section; the gradient section and the straight section are connected along a first direction, the gradient section is located on the side of the straight section away from the base along the first direction, and the space of the gradient section gradually increases along the direction away from the base.

5. The lens coating fixture according to claim 1, characterized in that, The through hole is circular in shape; the inner wall of the through hole is connected to a first anti-mistake platform and a second anti-mistake platform, which are arranged opposite to each other along the radial direction of the through hole.

6. The lens coating fixture according to claim 5, characterized in that, The base has a second direction and a third direction. The second direction is the arrangement direction between the first error-proof platform and the second error-proof platform. The first direction, the second direction, and the third direction are perpendicular to each other. The first error-proof platform is projected onto the shielding plate along the first direction as the first projection; The second error-proof platform's orthographic projection onto the shielding plate along the first direction is the second projection; Along the third direction, the length dimension of the first projection is greater than the length dimension of the second projection.

7. The lens coating fixture according to claim 6, characterized in that, Along the second direction, clearance holes are provided at the junctions of the two ends of the first error-proof platform and the inner wall of the through hole, and at the junctions of the two ends of the second error-proof platform and the inner wall of the through hole, and the depth direction of the clearance holes extends along the first direction.

8. The lens coating fixture according to claim 1, characterized in that, The shielding plate has a positioning hole on the side facing the base; the base has a positioning post on the side facing the shielding plate that matches the positioning hole, and the positioning post is inserted into the positioning hole.

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