Film coating lantern ring jig

Abstract

The utility model belongs to the technical field of coating jigs, and discloses a coating lantern ring jig which comprises a bottom plate and a cover plate, the bottom plate is provided with a stepped hole, a lens to be coated can be placed in the large end of the stepped hole, and the stepped surface of the stepped hole abuts against the first side surface of the lens to be coated; the cover plate is detachably connected with the bottom plate and provided with an annular limiting table, and the annular limiting table can extend into the large end of the stepped hole. When the coating lantern ring jig provided by the utility model is used, a lens to be coated is firstly placed in the large end of the stepped hole, and the first side surface of the lens to be coated is limited through the stepped surface of the stepped hole; and then the cover plate covers the bottom plate, and the annular limiting table extends into the large end of the stepped hole to limit the second side surface of the to-be-coated lens, so that the to-be-coated lens is prevented from inclining, and the condition of film shortage is prevented. In addition, the annular limiting table extends into the large end of the stepped hole, so that better positioning can be formed between the bottom plate and the cover plate, and use and assembly are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of film coating jigs, in particular to a film coating ring jig. Background Art

[0002] In the production and processing of modern optical products, parts used for imaging, such as lenses, prisms and other lenses, generally require coating in order to increase the transmittance of the product's optical system and reduce ghost images.

[0003] At present, when coating, the lens needs to be placed in a special coating ring jig for coating. If the coating ring jig vibrates or the lens is not placed properly relative to the coating ring jig, the lens will tilt, which will cause part of the edge of the lens to not be coated and cause film deficiency. Film deficiency will cause stray light to be introduced into the product optical system, reducing the imaging quality of the optical system. Utility Model Content

[0004] The utility model aims to provide a coating ring fixture, which can effectively prevent the lens from tilting and thus prevent the occurrence of film shortage.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] A coating ring fixture is provided, comprising:

[0007] The bottom plate is provided with a stepped hole, the lens to be coated can be placed in the large end of the stepped hole, and the stepped surface of the stepped hole abuts against the first side surface of the lens to be coated;

[0008] The cover plate is detachably connected to the bottom plate, and the cover plate is provided with an annular limiting platform, which can extend into the large end of the stepped hole.

[0009] Optionally, a first chamfer is provided at the large end of the stepped hole.

[0010] Optionally, the small end of the stepped hole is provided with a second chamfer.

[0011] Optionally, a third chamfer is provided at the outer ring end of the annular limiting platform.

[0012] Optionally, the cover plate is provided with an observation hole, and the observation hole is arranged cocentrically with the annular limiting platform.

[0013] Optionally, a fourth chamfer is provided at one end of the observation hole facing away from the annular limit platform.

[0014] Optionally, the bottom plate is provided with a pick-up and release groove on one side of the large end of the stepped hole, and the pick-up and release groove is connected to the large end of the stepped hole.

[0015] Optionally, the bottom plate is provided with a plurality of the stepped holes, and the cover plate is provided with the annular limiting platforms corresponding one to one with the stepped holes.

[0016] Optionally, one of the base plate and the cover plate is provided with a positioning hole, and the other is provided with a positioning column, and the positioning column can be inserted into the positioning hole.

[0017] Optionally, a screw connection piece is further included, the base plate is provided with a first hole, the cover plate is provided with a second hole, the screw connection piece passes through the second hole and is threadedly connected to the first hole.

[0018] Beneficial effects of the utility model:

[0019] The coating ring fixture provided by the utility model, when in use, firstly places the lens to be coated in the large end of the step hole, and limits the first side surface of the lens to be coated by the step surface of the step hole; then, the cover plate is covered on the bottom plate, and the annular limit platform is extended into the large end of the step hole to limit the second side surface of the lens to be coated, thereby preventing the lens to be coated from tilting, so as to prevent the occurrence of film shortage. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial structural cross-sectional view of a coating ring fixture provided by the utility model with a lens installed;

[0021] Figure 2 It is a structural schematic diagram of the bottom plate provided by the utility model;

[0022] Figure 3 It is a structural schematic diagram of the cover plate provided by the utility model;

[0023] Figure 4 It is a structural schematic diagram of the lens to be coated provided by the utility model;

[0024] Figure 5 It is a partial structural sectional view of the bottom plate provided by the utility model;

[0025] Figure 6 It is a partial structural sectional view of the cover plate provided by the utility model.

[0026] In the figure:

[0027] 10. Lens to be coated; 11. Coating surface; 12. Peripheral surface; 13. Chamfered surface;

[0028] 100, bottom plate; 110, stepped hole; 111, first chamfer; 112, second chamfer; 120, pick-and-place groove; 130, first hole;

[0029] 200, cover plate; 210, annular limit platform; 211, third chamfer; 220, observation hole; 221, fourth chamfer; 230, second hole;

[0030] 310. Positioning hole; 320. Positioning column. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0032] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0035] Reference Figures 1 to 6As shown, this embodiment provides a coating ring fixture, including a base plate 100 and a cover plate 200. The base plate 100 is provided with a stepped hole 110. The lens 10 to be coated can be placed in the large end of the stepped hole 110, and the stepped surface of the stepped hole 110 abuts against the first side surface of the lens 10 to be coated; the cover plate 200 is detachably connected to the base plate 100, and the cover plate 200 is provided with an annular limit platform 210, which can extend into the large end of the stepped hole 110.

[0036] When the coating ring jig is used, the lens 10 to be coated is first placed in the large end of the stepped hole 110, and the first side of the lens 10 to be coated is limited by the stepped surface of the stepped hole 110; then the cover plate 200 is placed on the bottom plate 100, and the annular limiting platform 210 is extended into the large end of the stepped hole 110 to limit the second side of the lens 10 to be coated, thereby preventing the lens 10 to be coated from tilting and preventing the occurrence of film shortage. In addition, extending the annular limiting platform 210 into the large end of the stepped hole 110 can also form a better positioning between the bottom plate 100 and the cover plate 200, which is convenient for use and assembly.

[0037] Specifically, Figure 4 As shown, the lens 10 to be coated includes a coating surface 11, an outer peripheral surface 12, and a chamfered surface 13 provided between the coating surface 11 and the outer peripheral surface 12. The lens without coating deficiency can be understood as the coating surface 11 is completely covered by the coating, and the chamfered surface 13 can be supported on the stepped surface of the stepped hole 110. The large end of the stepped hole 110 limits the outer peripheral surface 12 to prevent the lens 10 to be coated from deflecting in the stepped hole 110, thereby ensuring the coating quality. Exemplarily, the chamfering specification of the chamfered surface 13 is less than C0.15.

[0038] Exemplarily, the base plate 100 and the cover plate 200 may be made of metal, such as brass or stainless steel.

[0039] Exemplarily, the shapes of the base plate 100 and the cover plate 200 include but are not limited to rectangle and circle.

[0040] Exemplarily, the diameter D1 of the large end of the stepped hole 110 is 0.03 mm-0.05 mm larger than the diameter D of the lens 10 to be coated.

[0041] Exemplarily, the height H1 of the large end of the stepped hole 110 is 2-4 times, for example, 3 times, the edge thickness B of the lens 10 to be coated.

[0042] Exemplarily, the diameter D2 of the small end of the stepped hole 110 is 0.15mm-0.5mm smaller than the diameter D of the lens 10 to be coated, for example, 0.2mm, and the error does not exceed 0.01mm, which effectively prevents the lens 10 to be coated from slipping off the small end of the stepped hole 110.

[0043] In this embodiment, refer to Figure 1 and Figure 5 As shown, the large end of the stepped hole 110 can be provided with a first chamfer 111 to facilitate the placement of the lens 10 to be coated into the large end of the stepped hole 110, effectively preventing the large end of the stepped hole 110 from clamping the lens 10 to be coated, and facilitate the annular limit platform 210 to extend into the large end of the stepped hole 110.

[0044] Exemplarily, the specification of the first chamfer 111 may be C0.3-C0.5.

[0045] In this embodiment, continue to refer to Figure 1 and Figure 5 As shown, the small end of the stepped hole 110 can be provided with a second chamfer 112. During coating, the film material passes through the small end of the stepped hole 110 and covers the lens 10 to be coated to complete the coating. The second chamfer 112 is a coating angle, which can effectively ensure the coating quality of the lens 10 to be coated.

[0046] For example, the specification of the second chamfer 112 may be C1-C2.

[0047] Exemplarily, the difference between the height H2 of the small end of the stepped hole 110 and the height h1 of the second chamfer 112 is 0.08 mm-0.2 mm, for example, 0.1 mm.

[0048] In this embodiment, refer to Figure 1 , Figure 4 and Figure 6 As shown, the outer ring end of the annular limit platform 210 can be provided with a third chamfer 211, which has a guiding function and cooperates with the first chamfer 111 to make it easier for the annular limit platform 210 to extend into the large end of the stepped hole 110.

[0049] Exemplarily, the specification of the third chamfer 211 may be C0.3-C0.5.

[0050] Exemplarily, the outer diameter D3 of the annular limiting platform 210 is 0.15 mm-0.5 mm smaller than the diameter D of the lens 10 to be coated, for example, 0.2 mm, and the error does not exceed 0.01 mm.

[0051] Exemplarily, the inner diameter D4 of the annular limiting platform 210 is 2 mm-3 mm smaller than the diameter D of the lens 10 to be coated, for example, 2.2 mm, and the error does not exceed 0.01 mm.

[0052] Preferably, the wall thickness B1 of the annular limiting platform 210 is 0.8 mm-1.2 mm, for example, 1 mm.

[0053] Exemplarily, the height H3 of the annular limit platform 210 is based on the movement of the lens 10 to be coated along the height direction of the coating ring jig within the range of 0.015mm-0.03mm after the base plate 100 and the cover plate 200 are matched. Preferably, the movement of the lens 10 to be coated along the height direction of the coating ring jig is 0.02mm, which effectively prevents the lens 10 to be coated from tilting in the coating ring jig.

[0054] In this embodiment, continue to refer to Figure 1 , Figure 4 and Figure 6 As shown, the cover plate 200 is provided with an observation hole 220 , and the observation hole 220 is arranged cocentrically with the annular limiting platform 210 , and the coating quality of the lens 10 to be coated can be observed through the observation hole 220 .

[0055] Furthermore, a fourth chamfer 221 is provided at one end of the observation hole 220 facing away from the annular limiting platform 210 to increase the viewing angle so as to be more suitable for observing the coating quality of the lens 10 to be coated.

[0056] Furthermore, the aperture D5 of the observation hole 220 may be 0.6-0.9 times, for example, 0.8 times, of the diameter D of the lens 10 to be coated, to ensure that the viewing angle is suitable for observing the coating quality of the lens 10 to be coated.

[0057] Furthermore, the difference between the height H4 of the observation hole 220 and the height h2 of the fourth chamfer 221 may be in the range of 0.25 mm-1 mm, such as 0.5 mm, 0.6 mm, 0.8 mm, to ensure that the viewing angle is suitable for observing the coating quality of the lens 10 to be coated.

[0058] In a possible implementation, Figure 2 and Figure 3 As shown, the bottom plate 100 is provided with a plurality of stepped holes 110, and the cover plate 200 is provided with an annular stopper 210 corresponding to the stepped holes 110 one by one, so as to realize simultaneous coating of a plurality of lenses 10 to be coated, thereby improving the coating efficiency.

[0059] In this embodiment, refer to Figure 2 As shown, the bottom plate 100 is provided with a pick-up and placement groove 120 at one side of the large end of the stepped hole 110, and the pick-up and placement groove 120 is connected to the large end of the stepped hole 110 to facilitate taking out the lens 10 to be coated from the large end of the stepped hole 110. The cross section of the pick-up and placement groove 120 may be rectangular.

[0060] Specifically, there are multiple rows of pick-and-place grooves 120, and each pick-and-place groove 120 can be connected to a row of stepped holes 110. More specifically, the pick-and-place grooves 120 run through both sides of the bottom plate 100, which facilitates the pick-and-place of the lens 10 to be coated and also facilitates the molding of the bottom plate 100.

[0061] Exemplarily, the height H5 of the pick-and-place groove 120 is the same as the height H1 of the large end of the stepped hole 110 .

[0062] Exemplarily, the width B2 of the pick-and-place groove 120 is 2 mm-3 mm.

[0063] In this embodiment, refer to Figure 2 and Figure 3 As shown, one of the base plate 100 and the cover plate 200 is provided with a positioning hole 310 , and the other is provided with a positioning column 320 . The positioning column 320 can be inserted into the positioning hole 310 to facilitate the positioning and assembly between the base plate 100 and the cover plate 200 .

[0064] Exemplarily, two positioning posts 320 are disposed on the bottom plate 100 , and two positioning holes 310 are disposed on the cover plate 200 , and the positioning posts 320 correspond to the positioning holes 310 one by one.

[0065] Exemplarily, the diameter of the positioning column 320 may be 2 mm-5 mm, for example, the diameter of the positioning column 320 is 2.5 mm, and the diameter of the positioning hole 310 is 2.6 mm.

[0066] Exemplarily, the end of the positioning column 320 is chamfered.

[0067] In this embodiment, continue to refer to Figure 2 and Figure 3 As shown, the coating ring jig also includes a screw connection (not shown), a first hole 130 is provided on the base plate 100, a second hole 230 is provided on the cover plate 200, and the screw connection passes through the second hole 230 and is threadedly connected to the first hole 130, so as to facilitate fixing the cover plate 200 on the base plate 100, and then stably fix the lens 10 to be coated in the coating ring jig.

[0068] Exemplarily, the screw connection member may be a bolt. Specifically, the size of the bolt may be M2-M5, for example, the size of the bolt is M3, and the corresponding diameter of the second hole 230 is 3.1 mm.

[0069] Exemplarily, two first holes 130 are provided on the bottom plate 100 , two second holes 230 are provided on the cover plate 200 , and two screw-connecting members are provided, and the first holes 130 and the second holes 230 are penetrated in a one-to-one correspondence.

[0070] In this embodiment, the line between the two first holes 130 intersects with the line between the two positioning posts 320 . For example, the line between the first holes 130 and the positioning posts 320 is rectangular, which effectively ensures a stable connection between the base plate 100 and the cover plate 200 .

[0071] For example, the specific method of using the coating ring fixture provided in this embodiment is:

[0072] S100, preparing a base plate 100, a cover plate 200 and a plurality of lenses 10 to be coated.

[0073] S200, placing the lens 10 to be coated in the large end of the stepped hole 110 of the base.

[0074] Specifically, the lens 10 to be coated can be clamped with tweezers, and the lens 10 to be coated can be placed with the coating surface 11 facing the stepped hole 110 .

[0075] For example, before placing the lens 10 to be coated in the large end of the stepped hole 110 , the appearance of the lens 10 to be coated can be observed to prevent the lens 10 to be coated with damaged appearance from being placed in the large end of the stepped hole 110 of the base.

[0076] S300 , placing the cover plate 200 on the base plate 100 .

[0077] Specifically, the positioning column 320 and the positioning hole 310 are aligned, and the cover plate 200 is slowly placed on the bottom plate 100 to ensure that the annular limiting platform 210 extends into the large end of the stepped hole 110 .

[0078] S400 , passing the screw member through the second hole 230 and threading it to the first hole 130 , so as to achieve fixation between the bottom plate 100 and the cover plate 200 .

[0079] After the assembly of the bottom plate 100 and the cover plate 200 is completed, the coating ring jig and the lens 10 to be coated can be sent to the coating machine, and the coating machine is used to coat the lens 10 to be coated. After the coating is completed, the coating ring jig is taken out, the bottom plate 100 and the cover plate 200 are separated, and the coated lens is taken out from the large end of the stepped hole 110.

[0080] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A coating ring fixture, characterized in that: include: The bottom plate (100) is provided with a stepped hole (110), the lens to be coated (10) can be placed in the large end of the stepped hole (110), and the stepped surface of the stepped hole (110) abuts against the first side surface of the lens to be coated (10); The cover plate (200) is detachably connected to the base plate (100), and the cover plate (200) is provided with an annular limiting platform (210), and the annular limiting platform (210) can extend into the large end of the stepped hole (110).

2. The coating ring fixture according to claim 1, characterized in that: The large end portion of the stepped hole (110) is provided with a first chamfer (111).

3. The coating ring fixture according to claim 1, characterized in that: The small end portion of the stepped hole (110) is provided with a second chamfer (112).

4. The coating ring fixture according to claim 1, characterized in that: The outer ring end of the annular limiting platform (210) is provided with a third chamfer (211).

5. The coating ring fixture according to claim 1, characterized in that: The cover plate (200) is provided with an observation hole (220), and the observation hole (220) is arranged cocentrically with the annular limiting platform (210).

6. The coating ring fixture according to claim 5, characterized in that: A fourth chamfer (221) is provided at one end of the observation hole (220) facing away from the annular limiting platform (210).

7. The coating ring fixture according to claim 1, characterized in that: The bottom plate (100) is provided with a taking-in and putting groove (120) on one side of the large end of the stepped hole (110), and the taking-in and putting groove (120) is connected to the large end of the stepped hole (110).

8. The coating ring fixture according to claim 1, characterized in that: The bottom plate (100) is provided with a plurality of the stepped holes (110), and the cover plate (200) is provided with the annular limiting platforms (210) corresponding one-to-one to the stepped holes (110).

9. The coating ring fixture according to claim 1, characterized in that: One of the bottom plate (100) and the cover plate (200) is provided with a positioning hole (310), and the other is provided with a positioning column (320), and the positioning column (320) can be inserted into the positioning hole (310).

10. The coating ring fixture according to claim 1, characterized in that: It also includes a screw connection member, wherein the base plate (100) is provided with a first hole (130), the cover plate (200) is provided with a second hole (230), and the screw connection member passes through the second hole (230) and is threadedly connected to the first hole (130).

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