CN220246246U - A dish board for lens external diameter centre gripping - Google Patents
A dish board for lens external diameter centre gripping Download PDFInfo
- Publication number
- CN220246246U CN220246246U CN202321613315.4U CN202321613315U CN220246246U CN 220246246 U CN220246246 U CN 220246246U CN 202321613315 U CN202321613315 U CN 202321613315U CN 220246246 U CN220246246 U CN 220246246U
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- Prior art keywords
- clamping
- lens
- plate
- arc
- outer diameter
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- 230000007246 mechanism Effects 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 17
- 230000003287 optical effect Effects 0.000 abstract description 10
- 239000007888 film coating Substances 0.000 abstract description 5
- 238000009501 film coating Methods 0.000 abstract description 5
- 230000008602 contraction Effects 0.000 abstract description 3
- 238000005336 cracking Methods 0.000 abstract description 3
- 239000010408 film Substances 0.000 description 33
- 238000000576 coating method Methods 0.000 description 16
- 239000011248 coating agent Substances 0.000 description 15
- 238000007747 plating Methods 0.000 description 11
- 230000008859 change Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 238000007688 edging Methods 0.000 description 4
- 230000005489 elastic deformation Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012788 optical film Substances 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Landscapes
- Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)
Abstract
The utility model discloses a disc plate for clamping the outer diameter of a lens, which comprises a clamping plate and a plurality of locking mechanisms, wherein: the clamping plate comprises a plurality of clamping pieces which are arranged side by side, each clamping piece is provided with a plurality of through positioning holes and at least one row of arc through grooves, the arc through grooves are positioned at the outer edges of the clamping pieces, and the arc through grooves of adjacent clamping pieces are in one-to-one correspondence and are used for clamping the outer diameters of lenses; the locking mechanism comprises a screw and a nut, wherein the screw is correspondingly penetrated through the positioning holes of the clamping pieces one by one, and the clamping of the clamping pieces to the lenses is realized through threaded connection with the nut. The device reduces the processing difficulty of the core taking process in optical cold processing while realizing film-free undersupport, reduces the bad appearance of core taking, can adapt to pressure and thermal expansion and contraction changes during film coating, and prevents the lens from cracking or loosening.
Description
Technical Field
The utility model belongs to the technical field of film plating fixtures, and particularly relates to a disc plate for clamping the outer diameter of a lens.
Background
Optical coating refers to the process of coating a metal (or dielectric) film(s) on the surface of an optical part. The purpose of coating film on the surface of the optical part is to reduce or increase the requirements of light reflection, beam splitting, color separation, light filtering, polarization and the like. The film plating process is an important link in optical lens processing, and requires that the lens is arranged in a clamp, then the clamp is placed on an umbrella stand in a film plating machine, and then vacuum plating is carried out. The specific working principle is as follows: the optical film is realized in a coating cavity with high vacuum degree, the top of the vacuum chamber is a special disc plate for an optical lens, the disc plate is used for placing the optical element to be coated, and the film material is uniformly distributed in the disc plate area after evaporation and is deposited on the surface of the lens to form a film layer. The jig for holding the lens is referred to as a dish plate.
As shown in fig. 1 and 2, a disc in the prior art is generally composed of an upper plate and a lower plate, and is divided into a bottom plate 13 and a cover plate 11, wherein the bottom plate 13 is provided with a plurality of grooves 14 for accommodating and positioning the lens 5, the cover plate 11 is provided with a plurality of through holes 12 corresponding to the grooves 14 one by one, the diameter of the through holes 12 is smaller than the outer diameter of the lens 5, and the bottom plate 13 and the cover plate 11 fix the lens 5 by clamping the edge positions of the lens. The disc plate is contacted with or shielded from the edge of the lens, so that the film material cannot be attached at the shielding position, and full film coating, namely film shortage, cannot be realized. Many high-end lenses require that the lens not be allowed to have a membrane. The current processing technology for the lens which cannot be lack of film is usually realized by adopting a method of coating film and edging after coating film (namely, a core-after-coating technology). Although the plating-before-core process can improve the problem of film shortage, the difficulty of the edging process is increased because the edging centering is difficult after the film layer is arranged on the surface of the lens, and the edging process has the risk of damaging the film layer. When the core is centered, a clamp made of steel or copper is required to be clamped on the polished surface of the lens, the clamping force is generally realized by air pressure, generally about 0.2MPa air pressure, the polished surface is coated with a film when the core plating process is used, when the coated film is thicker, the film is easy to deform and tear during clamping, the brittle film is easy to break during grinding, and the softer film is easy to clamp out scratches, so that the lens similar to the film is difficult to realize the core plating process, and film-free underproduction cannot be realized.
Disclosure of Invention
Aiming at the problems, the utility model provides a disc plate for clamping the outer diameter of a lens, which can reduce the processing difficulty of a core taking process in optical cold processing, reduce the appearance defect of core taking, adapt to pressure and thermal expansion and contraction changes during film coating, and prevent the lens from cracking or loosening while realizing film-free undersupposition.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
the utility model provides a disc plate for clamping the outer diameter of a lens, which comprises a clamping plate and a plurality of locking mechanisms, wherein:
the clamping plate comprises a plurality of clamping pieces which are arranged side by side, each clamping piece is provided with a plurality of through positioning holes and at least one row of arc through grooves, the arc through grooves are positioned at the outer edges of the clamping pieces, and the arc through grooves of adjacent clamping pieces are in one-to-one correspondence and are used for clamping the outer diameters of lenses;
the locking mechanism comprises a screw and a nut, wherein the screw is correspondingly penetrated through the positioning holes of the clamping pieces one by one, and the clamping of the clamping pieces to the lenses is realized through threaded connection with the nut.
Preferably, the diameter of the arc-shaped through groove is equal to the outer diameter of the lens, and the cross-sectional shape is smaller than or equal to a semicircle.
Preferably, the locking mechanism further comprises an elastic piece, the elastic piece is sleeved on the screw rod, and two ends of the elastic piece respectively lean against the screw rod and the clamping plate.
Preferably, the elastic member is a spring.
Preferably, the axis of the positioning hole is perpendicular to the array direction of the arc-shaped through grooves of each row.
Compared with the prior art, the utility model has the beneficial effects that:
1) The clamping plate is formed by splicing the clamping plates, the clamping plates are used for clamping the lenses through the locking mechanism, the lenses can be fixed only by the outer diameter of the lenses, a non-shielding fixing mode for the surfaces of the lenses is realized, the processing difficulty of a core taking process in optical cold processing is reduced while the film-free undersupposition is realized, the poor appearance of core taking is reduced, the processing range of a film coating process is widened, and the clamping plate is particularly suitable for processing a plurality of high-difficulty lenses which are not suitable for the core-first-plating process, such as thicker, more fragile and softer film layers, and can be also applied to special long cylindrical lenses which are not suitable for making traditional disc plates;
2) The lens adopts the high material of hardness, and elastic deformation is limited, so very easily explodes when the chucking, especially when the coating film, the temperature reaches about 300 degrees centigrade, has the change of elasticity because of the coefficient of expansion difference between lens and the dish board, and this application still adopts elastic component in order to adapt to pressure and the thermal expansion shrinkage change when the coating film for solving this problem, prevents that the lens from exploding or taking off.
Drawings
FIG. 1 is a schematic diagram of a prior art disk;
FIG. 2 is a cross-sectional view of a prior art disk;
FIG. 3 is a schematic view of a disk for clamping an outer diameter of a lens according to the present utility model;
FIG. 4 is an exploded view of a disk for lens outer diameter clamping according to the present utility model;
fig. 5 is a schematic structural view of the splint according to the present utility model.
Reference numerals illustrate: 1. an elastic member; 2. a screw; 3. a clamping plate; 4. a nut; 5. a lens; 11. a cover plate; 12. a through hole; 13. a bottom plate; 14. a groove; 31. a clamping piece; 32. positioning holes; 33. arc through groove.
Detailed Description
The following description of the technical solutions in the embodiments of the present application will be made clearly and completely with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application.
The following shortcoming that the dish board exists among the prior art has been solved to this application: the surface of the disc plate and the surface of the lens are contacted to cause blocking, so that the problem of film shortage is caused; the core-first plating process is complex in procedure, and the problems of film damage, film cracking, film stripping and the like are caused when a thicker, brittle and softer film layer is taken out of a core, so that the processing quality is difficult to ensure, and even the core-first plating process cannot be realized.
As shown in fig. 3-5, a disc for clamping an outer diameter of a lens comprises a clamping plate 3 and a plurality of locking mechanisms, wherein:
the clamping plate 3 comprises a plurality of clamping pieces 31 which are arranged side by side, each clamping piece 31 is provided with a plurality of through positioning holes 32 and at least one row of arc-shaped through grooves 33, the arc-shaped through grooves 33 are positioned at the outer edges of the clamping pieces 31, and the arc-shaped through grooves 33 of adjacent clamping pieces 31 are in one-to-one correspondence and are used for clamping the outer diameter of the lens 5;
the locking mechanism comprises a screw rod 2 and a nut 4, wherein the screw rod 2 is correspondingly penetrated with the positioning holes 32 of the clamping pieces 31 one by one, and the clamping of the clamping pieces 31 to the lens 5 is realized through threaded connection with the nut 4.
The disc plate for clamping the outer diameter of the lens comprises a clamping plate 3 and a plurality of locking mechanisms, wherein each locking mechanism comprises a screw rod 2 and a nut 4 for fastening and positioning. As shown in fig. 3, the clamping plate 3 includes 5 clamping pieces 31, the shape and the size of each clamping piece 31 may be the same or different, for example, two rows of arc through slots 33 are formed on the middle clamping piece 31, a row of arc through slots 33 are formed on the clamping piece 31 at the edge, each row of arc through slots 33 may be any number, for example, two locking mechanisms are formed side by side along the length direction of the clamping piece 31, two positioning holes 32 are formed on each clamping piece 31, for example, two positioning holes 32 are formed on two sides of the clamping piece 31 for easy assembly, for example, side by side along the length direction of the clamping piece 31. By clamping the outer diameter position of the lens, the non-shielding clamping can be realized, and the film-free under-plating can be performed.
In one embodiment, the arcuate channel 33 has a diameter equal to the outer diameter of the lens 5 and a cross-sectional shape less than or equal to a semicircle.
In an embodiment, the locking mechanism further comprises an elastic piece 1, the elastic piece 1 is sleeved on the screw rod 2, and two ends of the elastic piece respectively lean against the screw rod 2 and the clamping plate 3. The lens is a material with high hardness, especially a glass lens, has limited elastic deformation, is extremely easy to burst when clamped, and when the temperature in a coating machine is about 300 ℃ in a coating process, the elasticity of the lens and a disc plate is changed due to different expansion coefficients, so that the elastic piece 1 is required to control the elasticity of the disc plate to the pressure of the lens so as to adapt to the pressure and the expansion and contraction change of the coating film and prevent the burst or loosening of the lens. It should be noted that, the two ends of the elastic member 1 may also respectively abut against the clamping plate 3 and the nut 4, so that the positions may be adjusted according to actual requirements.
In one embodiment, the elastic member 1 is a spring. It is easy to understand that the elastic member 1 may have other structures in the prior art, such as a rubber sleeve with high temperature resistance.
In one embodiment, the axis of the positioning hole 32 is perpendicular to the array direction of the rows of the arc-shaped through grooves 33.
Working principle:
when the lens is installed, the nut 4 on the plate is loosened, the plate is horizontally placed on the reference platform, then the lens is placed in a round hole formed in the plate and corresponding to the arc-shaped through grooves 33 of the adjacent clamping pieces 31, the lens is guaranteed to be free of deflection in the plate by means of the reference platform, the nut 4 is screwed again to tighten, and the lens is clamped by the arc-shaped through grooves 33 combined on the plate to complete lens assembly. Finally, the disc plate assembled with the lens is arranged in a coating machine, and then coating can be carried out.
The clamping plate is formed by splicing the clamping plates, the clamping plates are used for clamping the lenses through the locking mechanism, the lenses can be fixed only by the outer diameter of the lenses, a non-shielding fixing mode for the surfaces of the lenses is realized, the processing difficulty of a core taking process in optical cold processing is reduced while the film-free undersupposition is realized, the poor appearance of core taking is reduced, the processing range of a film coating process is widened, and the clamping plate is particularly suitable for processing a plurality of high-difficulty lenses which are not suitable for the core-first-plating process, such as thicker, more fragile and softer film layers, and can be also applied to special long cylindrical lenses which are not suitable for making traditional disc plates; in addition, the lens adopts the high material of hardness, and elastic deformation is limited, so very easily explodes when the chucking, especially when the coating film, the temperature reaches about 300 degrees centigrade, can the change of elasticity because of the coefficient of expansion difference between lens and the dish board, and this application still adopts the elastic component in order to adapt to pressure and the thermal expansion shrinkage change when the coating film for solving this problem, prevents that the lens from exploding and taking off.
The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above-described embodiments are merely representative of the more specific and detailed embodiments described herein and are not to be construed as limiting the scope of the claims. It should be noted that it would be apparent to those skilled in the art that various modifications and improvements could be made without departing from the spirit of the present application, which would be within the scope of the present application. Accordingly, the scope of protection of the present application is to be determined by the claims appended hereto.
Claims (5)
1. A dish board for lens external diameter centre gripping, its characterized in that: the disc plate for clamping the outer diameter of the lens comprises a clamping plate (3) and a plurality of locking mechanisms, wherein:
the clamping plate (3) comprises a plurality of clamping pieces (31) which are arranged side by side, a plurality of through positioning holes (32) and at least one row of arc through grooves (33) are formed in each clamping piece (31), the arc through grooves (33) are positioned at the outer edges of the clamping pieces (31), and the arc through grooves (33) adjacent to the clamping pieces (31) are in one-to-one correspondence and are used for clamping the outer diameter of the lens (5);
the locking mechanism comprises a screw (2) and nuts (4), wherein the screw (2) is correspondingly penetrated through positioning holes (32) of the clamping pieces (31) one by one, and the clamping of the clamping pieces (31) to the lenses (5) is realized through threaded connection with the nuts (4).
2. A plate for clamping an outer diameter of a lens as claimed in claim 1, wherein: the diameter of the arc-shaped through groove (33) is equal to the outer diameter of the lens (5), and the cross section shape is smaller than or equal to a semicircle.
3. A plate for clamping an outer diameter of a lens as claimed in claim 1, wherein: the locking mechanism further comprises an elastic piece (1), the elastic piece (1) is sleeved on the screw rod (2), and two ends of the elastic piece respectively lean against the screw rod (2) and the clamping plate (3).
4. A plate for clamping an outer diameter of a lens as claimed in claim 3, wherein: the elastic piece (1) is a spring.
5. A plate for clamping an outer diameter of a lens as claimed in claim 1, wherein: the axis of the positioning hole (32) is perpendicular to the array direction of each row of the arc-shaped through grooves (33).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321613315.4U CN220246246U (en) | 2023-06-25 | 2023-06-25 | A dish board for lens external diameter centre gripping |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321613315.4U CN220246246U (en) | 2023-06-25 | 2023-06-25 | A dish board for lens external diameter centre gripping |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220246246U true CN220246246U (en) | 2023-12-26 |
Family
ID=89269162
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321613315.4U Active CN220246246U (en) | 2023-06-25 | 2023-06-25 | A dish board for lens external diameter centre gripping |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220246246U (en) |
-
2023
- 2023-06-25 CN CN202321613315.4U patent/CN220246246U/en active Active
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