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WO2022105909A1 - 镜片的膜片贴合方法 - Google Patents

镜片的膜片贴合方法 Download PDF

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Publication number
WO2022105909A1
WO2022105909A1 PCT/CN2021/132043 CN2021132043W WO2022105909A1 WO 2022105909 A1 WO2022105909 A1 WO 2022105909A1 CN 2021132043 W CN2021132043 W CN 2021132043W WO 2022105909 A1 WO2022105909 A1 WO 2022105909A1
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WO
WIPO (PCT)
Prior art keywords
lens
film
diaphragm
fixture
jig
Prior art date
Application number
PCT/CN2021/132043
Other languages
English (en)
French (fr)
Inventor
郑晓雯
张超
Original Assignee
华为技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Priority to JP2023530533A priority Critical patent/JP7622929B2/ja
Priority to US18/254,022 priority patent/US20230415471A1/en
Priority to EP21894056.7A priority patent/EP4230383B1/en
Publication of WO2022105909A1 publication Critical patent/WO2022105909A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B41/00—Arrangements for controlling or monitoring lamination processes; Safety arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/02—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor using sheet or web-like material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C63/00—Lining or sheathing, i.e. applying preformed layers or sheathings of plastics; Apparatus therefor
    • B29C63/0047—Preventing air-inclusions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/00009—Production of simple or compound lenses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
    • B29D11/00—Producing optical elements, e.g. lenses or prisms
    • B29D11/0073—Optical laminates
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/0046—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by constructional aspects of the apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B37/00—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding
    • B32B37/06—Methods or apparatus for laminating, e.g. by curing or by ultrasonic bonding characterised by the heating method
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2011/00—Optical elements, e.g. lenses, prisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2250/00—Layers arrangement
    • B32B2250/02—2 layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2551/00—Optical elements

Definitions

  • the present application relates to the technical field of film material lamination, and in particular, to a method for laminating a film of a lens.
  • the main method of filming on the lens is: attaching a flat film to the surface of the sheet substrate, and then thermally bending the whole composed of the film and the substrate, and then bending the sheet.
  • the optical element with the same optical properties as the diaphragm can be obtained.
  • the film is thermally bent, due to its own characteristics, it is very easy to stretch and cannot maintain the initial pre-bent shape, thereby affecting the surface shape accuracy of the final optical element.
  • the temperature of the injection-molded optical material is generally relatively high, the optical properties or mechanical properties of the film are easily affected.
  • the present application provides a method for laminating a film of a lens, which can obtain an optical element with high surface precision, and ensure the optical and mechanical properties of the film, and ensure that the optical element obtained after the final lamination can have better the quality of.
  • the present application provides a method for laminating a film of a lens, and the method for laminating a film includes:
  • the second jig is a deformable flexible jig
  • the relative movement of the first fixture and the second fixture is controlled, so that the lens is gradually fitted with the diaphragm from the middle position to the edge position.
  • the flat film can be gradually contacted and bonded with the lens from the middle position to the edge position by the film bonding method, which can ensure that the deformation of the flat film from the middle position to the edge position can occur uniformly, Therefore, after the flat film is attached to the lens, the optical properties and mechanical properties of the membrane will be changed, which will affect the optical properties and mechanical properties of the optical element obtained by the final lamination.
  • the method for laminating the film of the present application is simple to operate, and it is not necessary to first heat the flat film into a curved film with an ideal shape through processes such as heating, pressure maintaining, stretching, softening, etc., and then paste it. It can be bonded to the lens, so that the bonding method can be simplified, and the optical properties or mechanical properties of the bonded film can be avoided due to processes such as heating, pressure holding, stretching, and softening.
  • the lens is gradually attached to the diaphragm from the middle position to the edge position, so as to facilitate the discharge of air bubbles between the diaphragm and the lens, thereby ensuring the quality of the lamination between the diaphragm and the lens.
  • the boundary information of the full aperture of the lens is obtained, so that the lens and the first fixture are aligned;
  • the embodiment of the present application acquires the boundary information of the full aperture of the diaphragm and the lens to ensure the accuracy of the alignment of the diaphragm and the second jig. And the accuracy of the alignment of the lens and the first fixture.
  • the diaphragm is heated by the second jig.
  • heating the diaphragm can soften the diaphragm, so that the diaphragm can be better attached to the diaphragm bearing area.
  • the film in the process of attaching the film to the lens, the film can be deformed more easily after heating, so that the film can be flatly attached to the surface of the lens, avoiding the time when the film is attached to the film surface of the lens. Wrinkles, etc. appear.
  • the second jig can be used to uniformly heat each position of the diaphragm, which can ensure that each position of the diaphragm can have the same deformability, and avoid uneven stretching of each position of the diaphragm And there will be wrinkles or changes in the direction of the optical axis, so as to ensure the quality of the optical element obtained after the final film lamination is completed.
  • the second jig is used to heat the diaphragm. Since the second jig has a certain heat preservation effect, the diaphragm can be heated during the entire lamination process, which can ensure that the diaphragm and the lens are laminated during the lamination process. The sheet can always be heated for a better fit.
  • the second fixture since the second fixture has a certain heat preservation effect, after the diaphragm heater stops working, the second fixture can continue to heat the diaphragm, thereby reducing energy consumption.
  • the lens further comprises the steps of:
  • the lens is heated by the first fixture, so that the temperature difference between the lens and the film is less than 30°.
  • the lens is heated, so that the temperature difference between the film and the lens can be reduced during the process of laminating the film and the lens, so as to ensure that after the film and the lens are attached and cooled, the film
  • the stress between the film and the lens can be small, thereby ensuring the stability of the fit between the film and the lens.
  • the temperature difference between the lens and the film is less than 30°, which can effectively ensure the stability of the fit between the film and the lens.
  • each position of the lens is uniformly heated by the first fixture, so as to ensure that the temperature of each position of the lens is balanced during the lamination process of the film and the lens.
  • the boundary information of the full aperture of the lens is obtained by a first alignment camera, and the photographing range of the first alignment camera covers the full aperture of the lens;
  • the boundary information of the full aperture of the lens is acquired through the second alignment camera, and the photographing range of the second alignment camera covers the full aperture of the diaphragm.
  • the photographing range of the first alignment camera can cover the full aperture of the lens
  • the boundary information of the full aperture of the lens can be obtained through the first alignment camera, and the center position of the lens can be obtained more accurately to ensure The accuracy of the alignment between the lens and the first fixture.
  • the photographing range of the second alignment camera can cover the full aperture of the diaphragm
  • the boundary information of the full aperture of the diaphragm can be obtained through the second alignment camera, and the center position of the diaphragm can be obtained more accurately , to ensure the accuracy of the alignment between the diaphragm and the second fixture.
  • the method for attaching the film of the lens further comprises:
  • the lens that has been attached with the film is subjected to defoaming treatment to remove air bubbles between the film and the lens.
  • the defoaming treatment comprises:
  • the pressure during the pressure-holding and heat preservation treatment is 0.1- 1MPa
  • the temperature is 40-80°C
  • the holding time is 5min-1h.
  • the air bubbles between the lens and the diaphragm can be fully eliminated, so as to ensure the bonding effect of the lens and the diaphragm.
  • the size of the diaphragm is consistent with the effective aperture of the lens, or the size of the diaphragm is smaller than the effective aperture of the lens, so as to avoid the need to pass other Excessive diaphragms are removed by a process (such as laser cutting), thereby reducing the processing steps. In addition, it can also ensure that the film is not easily wrinkled when it is attached to the lens.
  • the second fixture includes a film bearing area, the film is fixed on the film bearing area; the surface of the lens attached to the film is a film surface;
  • the film-bearing area of the second fixture When the film-coated surface of the lens is concave, the film-bearing area of the second fixture is a convex surface, and the radius of curvature of the film-bearing area is smaller than the radius of curvature of the film-mounted surface; the lens When the film sticking surface is convex, the film carrying area of the second fixture is flat or concave, and the curvature radius of the film carrying area is larger than the curvature radius of the film sticking surface.
  • the array of membrane support areas is provided with vacuum holes, and the membrane is fixed to the membrane support area by the vacuum adsorption force of the vacuum holes.
  • the effective diameter of the lens is in the range of 1-60 mm, which ensures that the film can be smoothly attached to the bonding surface of the lens without wrinkles, so as to ensure a better film bonding effect.
  • the ratio of the radius of curvature of the film surface to the bonding diameter of the film surface is greater than 1.2; when the film surface of the lens is concave, the film surface The ratio of the radius of curvature of the film to the fitting diameter of the film surface is greater than 1.5, so as to ensure that no wrinkles are produced when the film is fitted on the lens.
  • the surface of the lens attached to the film is a film-laminated surface
  • the surface shape of the film-laminated surface is a spherical surface, an aspherical surface or a free-form surface with a recurve.
  • the fixing of the diaphragm on the second fixture includes:
  • the carrier tape on both sides of the diaphragm is clamped by the clamping members, and the diaphragm is opposite to the second fixture, the orthographic projection of the second fixture on the plane where the diaphragm is located covering the membrane;
  • the film by carrying the film by the carrier tape, the film can be protected from being damaged during subsequent transfer to the film carrying area of the second jig, and the film can be transferred more easily.
  • the process before controlling the relative movement of the first jig and the second jig, the process further includes:
  • the full-aperture boundary information of the lens and the diaphragm is acquired, so as to align the lens and the diaphragm, so as to further improve the precision of fitting the diaphragm and the lens.
  • the process before controlling the relative movement of the first fixture and the second fixture, the process further includes:
  • the surface activation treatment of the lens can make the film adhere more firmly to the surface of the lens, and can clean the surface of the lens, so as to ensure that there is no gap between the lens and the film after the film is applied. There will be impurities to ensure the quality of the film.
  • the present application further provides a device for attaching a lens to a lens
  • the device for attaching a lens to the lens includes: a memory, a processor, and a lens attaching program stored in the memory and running on the processor; the lens attaching A program is executed by the processor to implement the above-described lens coating method.
  • the flat diaphragm can be gradually contacted and attached to the lens from the middle position to the edge position by the lens laminating device of the present application, and the flat diaphragm can be guaranteed.
  • the deformation from the middle position to the edge position can occur uniformly, so as to avoid the change of the optical properties and mechanical properties of the film after the flat film is attached to the lens, which will affect the optical performance of the optical element obtained after the final bonding. Mechanical behavior.
  • the film lamination method performed by the lens lamination equipment of the present application is simple to operate, and does not need to first heat the flat film to a curved film with an ideal shape through processes such as heating, pressure maintaining, stretching, softening, etc. Then, it is attached to the lens, so that the lamination method can be simplified, and the optical properties or mechanical properties of the attached film can be avoided due to processes such as heating, pressure holding, stretching, and softening.
  • the lens film sticking device of the present application it is possible to facilitate the discharge of air bubbles between the film and the lens, thereby ensuring the quality of the film and the lens.
  • the boundary information of the lens and the full aperture of the film can be obtained, which can ensure the accuracy of the alignment of the film and the second jig and the alignment of the lens and the first jig. accuracy.
  • FIG. 1 is a schematic structural diagram of a lens lamination device according to an embodiment of the application
  • FIG. 2 is a schematic structural diagram of a lens lamination device according to another embodiment of the present application.
  • FIG. 3 is a schematic diagram of the bonding state of the lens and the film when the film-coated surface of the lens is convex and the film-bearing area of the second jig is flat;
  • FIG. 4 is a schematic diagram of the bonding state of the lens and the film when the film-coated surface of the lens is convex and the film-bearing area of the second fixture is concave;
  • FIG. 5 is a schematic diagram of the bonding state of the lens and the film when the film-coated surface of the lens is concave and the film-bearing area of the second jig is convex;
  • Figure 6 shows a schematic diagram of the bonding state of the lens and the film when the film-coated surface of the lens is flat and the film-bearing area of the second jig is convex;
  • FIG. 7 is a schematic flowchart of a method for laminating a film of a lens according to some embodiments of the present application.
  • FIG. 8 is a flow chart of the specific operation of fixing the diaphragm on the second fixture when the diaphragm laminating device described in FIG. 2 is used to attach the diaphragm on the lens;
  • FIG. 9 is a schematic diagram of a working module of a lens lamination device according to an embodiment of the present application.
  • the present application provides a method for laminating a film of a lens, which is used for laminating a film on the lens.
  • defects such as bubbles or wrinkles between the film and the curved cover plate can be avoided, and the surface shape accuracy, optical performance and mechanical performance of the optical element obtained after the lens film is completed can be guaranteed.
  • the optical element after the lens film is completed can be applied to various types of terminals.
  • the terminal may be augmented reality (Augmented Reality, AR) glasses, virtual reality (Virtual Reality, VR) glasses, a mobile phone, a tablet, a camera, and the like.
  • the diaphragm may also be any type of diaphragm.
  • the film can be an optical film with an optical axis such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc., or an anti-reflection film, an anti-scratch film, a light scattering film, and an anti-fog film. And other types of optical film.
  • an optical film with an optical axis such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc.
  • an anti-reflection film such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc.
  • an anti-reflection film such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc.
  • an anti-reflection film such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc.
  • an anti-reflection film such as
  • the thickness of the film is 0.02mm-0.5mm, which can improve the optical performance or mechanical performance of the optical element after the lens film is completed, and at the same time prevent the thickness of the film from being too thick to affect the thickness of the optical element and optical properties such as transmittance of light.
  • FIG. 1 is a schematic structural diagram of a lens sticking device 100 according to an embodiment of the present application.
  • the film 200 is attached to the lens 300 by the lens lamination device 100 .
  • the lens lamination device 100 includes a first jig 10 , a second jig 20 and a driving mechanism 30 .
  • the first jig 10 can be used to fix the lens 300
  • the second jig 20 can be used to fix the diaphragm 200
  • the driving mechanism 30 can be used to drive the first jig 10 and the second jig 20 to move relative to each other, so that the The lens 300 fixed on the first fixture 10 moves relatively with the diaphragm 200 fixed on the second fixture 20 , so that the diaphragm 200 is attached to the lens 300 .
  • the first fixture 10 is a rigid fixture, which can stably fix the lens 300 .
  • the first fixture 10 may be a plastic (such as high temperature resistant nylon plastic, etc.), a metal (such as aluminum, iron, etc.), an alloy (such as an aluminum alloy, etc.) that has a certain strength and is not easily deformed. , ceramics and other materials.
  • the first fixture 10 is a rigid fixture, and the lens 300 is clamped and fixed to the first fixture 10 . It can be understood that, in other embodiments of the present application, the first fixture 10 may also be other fixed structures.
  • the lens mounting area 11 of the first fixture 10 may be provided with a vacuum adsorption area, and the lens 300 can be fixed on the first fixture 10 by vacuum adsorption; or, in some embodiments, the first fixture The tool 10 includes an engaging portion, and the lens 300 is fastened and fixed to the first fixture 10 through the engaging portion.
  • the second jig 20 is a deformable and flexible jig, so that the film 200 can be attached to the lens 300 later.
  • the second jig 20 may be made of flexible materials such as rubber and silicone.
  • the first fixture 10 has a lens mounting area 11 , and the lens 300 is mounted in the lens mounting area 11 .
  • the second fixture 20 includes a diaphragm bearing area 21 , and the diaphragm 200 is fixed in the diaphragm bearing area 21 .
  • the diaphragm bearing area 21 is disposed opposite to the lens mounting area 11 , so that the diaphragm 200 fixed in the diaphragm bearing area 21 can be accurately attached to the lens 300 .
  • the size of the lens mounting area 11 can be adjusted correspondingly according to the size of the mounting lens 300 , so as to fix the lenses 300 of different sizes.
  • the surface of the lens mounting area 11 of the first jig 10 may also be covered with a protective layer such as Teflon, and the lens 300 is in contact with the protective layer when being fixed on the first jig 10, so as to avoid the first The lens 300 is damaged when a fixture 10 fixes the lens 300 .
  • a protective layer such as Teflon
  • the shape of the surface of the protective layer away from the first fixture 10 and the surface of the lens 300 facing the first fixture 10 are substantially the same, that is, when the lens 300 is fixed on the first fixture 10, the lens 300
  • the surface of the lens can be basically attached to the protective layer, so as to ensure that the first jig 10 can support and limit the lens 300 well, and further ensure that the lens 300 can be stably fixed on the first jig 10 .
  • vacuum holes 22 arranged in an array are provided in the membrane support area 21 .
  • the vacuum hole 22 can be connected with a vacuuming device, so as to generate a vacuum adsorption force, so as to adsorb and fix the diaphragm 200 on the diaphragm bearing area 21 .
  • the diaphragm 200 may also be fixed to the diaphragm bearing area 21 in other ways.
  • FIG. 2 is a schematic structural diagram of a lens lamination device 100 according to another embodiment of the present application. In the embodiment shown in FIG.
  • the film 200 is fixed on the carrier tape 400
  • the lens laminating device 100 further includes a clamping member 500 .
  • the clamping members 500 clamp the carrier tape 400 and are clamped on both sides of the film 200 so as to tension the carrier tape 400 supporting the film 200 .
  • the clamping member 500 can move relative to the second jig 20 until the carrier tape 400 is in contact with the film carrying area 21 of the second jig 20 , and the part of the carrier tape 400 carrying the film 200 is tightly attached to the film carrying area.
  • the diaphragm 20 is fixed on the diaphragm bearing area 21 .
  • vacuum holes 22 are provided in the array of film-carrying areas 21 , and the lens lamination device 100 also includes a clamping member 500 , and the film 200 is fixed on the carrier tape 400 .
  • the position of the carrier tape 400 corresponding to the film carrying area 21 is fixed to the film carrying area 21 through the combined action of the suction force of the vacuum hole 22 and the tensioning force of the clamping member 500 to drive the carrier tape 400 , so that the carrier tape 400 is carried on the film carrying area 21 .
  • the upper diaphragm 200 is fixed on the diaphragm bearing area 21 .
  • the carrier tape 400 can be more firmly and stably attached to the diaphragm bearing area at the position corresponding to the film bearing area 21 . area 21 , so that the diaphragm 200 can be more firmly and stably attached to the diaphragm bearing area 21 .
  • the film 200 is fixed on the carrier tape 400 , and after the film 200 is attached to the lens 300 , the carrier tape 400 can be easily peeled off from the film 200 .
  • the film 200 is fixed on the carrier tape 400 by a photosensitive adhesive. After the film 200 is attached to the lens 300, the film 200 can be easily peeled off from the carrier tape 400 by ultraviolet irradiation. to obtain the desired optics.
  • the first jig 10 and the second jig 20 are disposed opposite to each other, so that the lens 300 fixed on the first jig 10 is opposite to the diaphragm 200 fixed on the second jig 20 .
  • the diaphragm 200 can be attached to the lens 300 by moving the first jig 10 and the second jig 20 .
  • the first jig 10 is located above the second jig 20 , and the first jig 10 can move in the direction toward the second jig 20 .
  • the second jig 20 may also be located above the first jig 10 , and the second jig 20 can also move toward the first jig 10 .
  • first jig 10 and the second jig 20 may also be arranged in other positional relationships.
  • first jig 10 and the second jig 20 can also be arranged side by side.
  • the second jig 20 can be turned over to make the second jig 20 .
  • 20 is arranged opposite to the first fixture 10 .
  • the shape of the film bearing area 21 of the second fixture 20 matches the shape of the film surface of the lens 300 , so as to ensure that the film 200 carried on the film bearing area 21 is attached to the lens 300 can have a better fit effect.
  • the lens 300 includes a light incident surface 301 and a light exit surface 302 disposed opposite to each other. The light enters the lens 300 through the light entrance surface 301 and exits through the light exit surface 302 .
  • the lens 300 includes a film surface, and the film 200 is attached to the film surface.
  • the film surface of the lens 300 may be the light incident surface 301 or the light exit surface 302 , that is, the film 200 is attached to the light entrance surface 301 or the light exit surface 302 . At this time, there is only one film surface of the lens 300 .
  • both the light incident surface 301 and the light exit surface 302 of the lens 300 can be film-coated surfaces, that is, the light incident surface 301 and the light exit surface 302 of the lens 300 can both be laminated with films.
  • the film surface of the lens 300 that needs to be film-bonded faces away from the first jig 10 , so that the film 200 can be easily bonded to the film surface of the lens 300 .
  • the film surface of the lens 300 may be a spherical surface, an aspherical surface or a free-form surface with a recurve.
  • a free-form surface with an inverse curvature means that there is only one vertex on both sides of the film surface.
  • a free-form surface with an inverse curve can be a concave or convex surface, or it can also be a free-form surface with a plane edge and a concave or convex surface in the middle area.
  • the film-coated surface of the lens 300 is a convex surface
  • the film-bearing area 21 of the second fixture 20 may be a flat surface or a concave surface.
  • the radius of curvature of the film-bearing area 21 is larger than the radius of curvature of the film-coated surface of the lens 300 .
  • FIG. 3 shows a schematic diagram of the lamination of the lens 300 and the film 200 when the film surface of the lens 300 is convex and the film bearing area 21 of the second fixture 20 is flat.
  • the lens 300 is attached to the film 200 when the film surface of the lens 300 is convex and the film bearing area 21 of the second fixture 20 is concave.
  • the film-coated surface of the lens 300 is convex
  • the film-bearing area 21 of the second fixture 20 is flat or concave
  • the curvature radius of the film-bearing area 21 is larger than the curvature radius of the film-coated surface of the lens 300, the first cure can be guaranteed.
  • the jig 10 and the second jig 20 are close to each other, so that when the lens 300 fixed on the first jig 10 is attached to the film 200 fixed on the second jig 20 , the center area of the film 200 to the edge area It can be gradually attached to the lens 300 , so that the air between the membrane 200 and the lens 300 can be better removed, and air bubbles can be avoided in the process of attaching the membrane 200 and the lens 300 .
  • the film-bearing area 21 of the second fixture 20 when the film-coated surface of the lens 300 is concave, the film-bearing area 21 of the second fixture 20 is convex, and the curvature radius of the film-bearing area 21 is smaller than the curvature radius of the film-coated surface of the lens 300 .
  • the radius of curvature of the central position of the film carrying area 21 may be less than 1.5 times the radius of curvature of the concave film surface, thereby reducing the risk of central air bubbles when the film 200 is attached to the lens 300 . Please refer to FIG. 5 .
  • FIG. 5 Please refer to FIG. 5 .
  • FIG. 5 shows a schematic diagram of lamination of the lens 300 and the film 200 when the film surface of the lens 300 is concave and the film bearing area 21 of the second fixture 20 is convex.
  • the film-coated surface of the lens 300 is concave
  • the film-bearing area 21 of the second fixture 20 is convex
  • the curvature radius of the film-bearing area 21 is smaller than the curvature radius of the film-coated surface of the lens 300 , the first fixture 10 can be guaranteed.
  • the second jig 20 is close to each other, so that when the lens 300 fixed on the first jig 10 and the diaphragm 200 fixed on the second jig 20 are attached, the center area to the edge area of the diaphragm 200 gradually aligns with each other.
  • the lens 300 is adhered, so that the air between the diaphragm 200 and the lens 300 can be better removed, and air bubbles can be avoided in the process of attaching the diaphragm 200 and the lens 300 .
  • the fitting surface of the lens 300 may also be a plane.
  • the diaphragm bearing area 21 of the second fixture 20 may be convex.
  • FIG. 6 shows a schematic diagram of lamination of the lens 300 and the film 200 when the film surface of the lens 300 is flat and the film bearing area 21 of the second fixture 20 is convex.
  • the diaphragm 200 carried on the diaphragm bearing area 21 can preferentially contact the central area of the lens 300 .
  • the center area to the edge area of the diaphragm 200 is gradually attached to the lens 300, so that the air between the diaphragm 200 and the lens 300 can be better removed, and the film Air bubbles are generated during the lamination process of the sheet 200 and the lens 300 .
  • the diaphragm 200 is a flat diaphragm.
  • the size of the diaphragm 200 is the same as the effective diameter of the lens 300 or slightly smaller than the effective diameter of the lens 300, so as to avoid the need to go through other processes (such as laser cutting) after the diaphragm 200 is attached.
  • the excess diaphragm 200 is cut off, thereby reducing the number of processing steps.
  • the edge of the lens 300 is a plane, and the middle position is a concave or curved surface.
  • the lens 200 When the diameter of the lens 200 is smaller than the effective diameter of the lens 300, the lens 200 only covers the middle position of the lens 300, but does not cover the lens 300.
  • the edge of the lens 300 can ensure that the desired optical effect can be achieved, and at the same time, avoid the problem of bubbles caused by the rapid change of the curvature of the film 200 covering the middle position to the edge position.
  • the effective aperture of the lens 300 refers to the aperture of a part of the lens that the lens can play an actual optical function.
  • the edge of the lens 300 is a plane and the middle position is a concave or curved surface
  • the plane portion of the edge of the lens is generally a bearing structure, which is convenient for the installation of the lens, and does not actually play a role in the transmission of the optical path, but has a practical effect on the optical path.
  • the middle concave or convex part of the lens 200 so the effective aperture of the lens 200 is the diameter of the middle concave or convex part of the lens 200 .
  • the lens 300 of the present application may be a circular lens, or may be a lens of other shapes such as a square lens, which is not specifically limited herein.
  • the shape of the diaphragm 200 is the same as that of the lens 300 .
  • the size of the diaphragm 200 is the same as or slightly smaller than the effective aperture of the lens 300.
  • the dimensions of the diaphragm 200 in all directions are the same as or slightly smaller than the dimensions of the lens 300 in all directions. Small.
  • the lens 300 and the diaphragm 200 are both circular, and the size of the diaphragm 200 is the same as or slightly smaller than the effective diameter of the lens 300 , namely: the diameter of the diaphragm 200 Less than or equal to the effective aperture of the lens 300.
  • the effective aperture range of the lens 300 is 1-60 mm.
  • the film 200 since the film 200 is a flat film, the flat film is bonded to the bonding surface of the lens 300 .
  • the bonding surface of the lens 300 is a curved surface, the film 200 will be deformed to a certain extent, so as to ensure that all positions of the film 200 can be flatly bonded to the bonding surface to avoid the generation of wrinkles.
  • the effective diameter of the lens 300 is within 1-60 mm, which ensures that the diaphragm 200 can be flatly attached to the attaching surface of the lens 300 without wrinkles, so as to ensure better quality Diaphragm fit effect.
  • the ratio of the curvature radius of the film surface to the bonding diameter of the film surface is greater than 1.2; when the film surface of the lens 300 is concave, the curvature radius of the film surface and the adhesion of the film surface
  • the ratio of the aperture diameter is greater than 1.5, so as to ensure that the diaphragm 200 will not be wrinkled when it is attached to the lens 300 .
  • the curvature radius of the sticking film surface is the curvature radius of the spherical sticking film surface; when the film sticking surface is an aspheric surface or a free-form surface, the curvature radius of the sticking film surface is It refers to the radius of curvature of the spherical surface closest to the film surface after fitting.
  • the bonding aperture of the film surface refers to the size of the projection produced by the normal projection of the film on a plane perpendicular to the optical axis of the lens when the film 200 is bonded to the lens 300 .
  • the driving mechanism 30 includes a first driving mechanism 31 and a second driving mechanism 32 .
  • the first driving mechanism 31 is connected with the first fixture 10
  • the second driving mechanism 32 is connected with the second fixture 20 .
  • the first driving structure 31 is used for driving the first fixture 10 to move in the direction of the second fixture 20
  • the second driving mechanism 32 is used for driving the second fixture 20 to move in the direction of the first fixture 10, so that the The diaphragm 200 on the second fixture 20 is attached to the lens 300 fixed on the first fixture 10 .
  • the first driving mechanism 31 and the second driving mechanism 32 may be driving mechanisms such as a screw driving mechanism, a guide rail driving mechanism, and a cylinder driving mechanism.
  • the first drive structure 31 is a guide rail drive mechanism
  • the guide rail drive mechanism includes a guide rail 311 and a guide rail motor 312 connected to one end of the guide rail 311 .
  • the first fixture 10 is connected with the guide rail 311 to be able to It moves along the guide rail 311 under the driving of the guide rail motor 312 .
  • the second driving mechanism 32 is a cylinder driving mechanism.
  • the cylinder driving mechanism includes a cylinder 321 and a connecting rod 322 connected to the cylinder 321.
  • the second fixture 20 is connected to the end of the connecting rod 322 away from the cylinder 321.
  • the jig 20 can move in the extending direction of the link 322 .
  • the extending direction of the connecting rod 322 is the direction in which the second jig 20 faces the first jig 10 .
  • first driving mechanism 31 and the second driving mechanism 32 may also use other types of driving mechanisms to generate relative movement under the driving of the driving mechanism.
  • the driving mechanism 30 further includes a third driving structure 33 , and the third driving mechanism 33 is connected with the clamping member 500 to drive the clamping member 500 to clamp or release the load Take 400.
  • the clamping member 500 may also be various types of driving mechanisms such as a screw driving mechanism, a guide rail driving mechanism, and a cylinder driving mechanism.
  • the lens lamination device 100 may further include a first cavity 41 and a second cavity 42 cooperating with the first cavity 41 .
  • the first fixture 10 is located in the first cavity 41
  • the second fixture 20 is located in the second cavity 42 .
  • the first cavity 41 and the second cavity 42 are disposed opposite to each other, and the first cavity 41 and the second cavity 42 can be relatively moved to cover the first cavity 41 and the second cavity 42 to form a closed space, so as to form a closed space.
  • the first jig 10 and the second jig 20 are located in a closed space, so that the lamination process of the diaphragm 200 and the lens 300 is carried out in the closed space, so as to avoid external impurities between the diaphragm 200 and the lens 300, Improve fit quality.
  • the sealed space can be connected with a vacuuming device, and the vacuuming device can evacuate the sealed space to form a vacuum environment, so as to further avoid the gap between the film and the lens when the film 200 and the lens 300 are attached. The air bubbles are generated, which further improves the bonding quality of the diaphragm 200 and the lens 300 .
  • the first fixture 10 is located in the first cavity 41 , and the first driving mechanism 31 is connected to the first cavity 41 to drive the first cavity 41 to move relative to the second cavity 42 .
  • the first jig 10 can be connected to the first driving mechanism 31 through the first cavity 41 .
  • the present application also provides a method for laminating a film of a lens, which is used for laminating the film 200 on the lens 300 .
  • the film 200 can be applied to the film surfaces of different shapes of different lenses 300 by the lens film sticking device 100 .
  • the lens 300 with a convex film surface is attached to the film 200 by the lens lamination device 100 shown in FIG. 1 as an example, and the lens lamination device 100 shown in FIG. Taking the lens 300 to which the film 200 is bonded as an example, the bonding method of the film 200 of the lens 300 of the present application will be described. Please refer to FIG. 7 .
  • FIG. 7 is a schematic flowchart of a method for laminating the film 200 of the lens 300 according to some embodiments of the present application.
  • the method for attaching the diaphragm 200 to the lens 300 specifically includes:
  • Step 110 Fix the lens 300 on the first fixture 10 .
  • the lens 300 is installed in the first fixture 10 to fix the lens 300 . Moreover, when the lens 300 is installed in the first jig 10, the lens 300 needs to be attached to the film 200 with the film-coated surface away from the first jig 10, so as to facilitate the subsequent lamination of the film.
  • the film-coated surface of the lens 300 may be a convex surface, a concave surface or a flat surface.
  • the film-coated surface of the lens 300 fixed on the first fixture 10 is convex; in the embodiment shown in FIG. 2 , the film-coated surface of the lens 300 fixed on the first fixture 10 is Concave.
  • Step 120 Fix the diaphragm 200 on the second fixture 20 .
  • the diaphragm 200 is fixed on the diaphragm bearing area 21 of the second fixture 20 to fix the diaphragm 200 .
  • the fixing of the diaphragm 200 on the second jig 20 specifically includes:
  • the film 200 is transferred to the film carrying area 21 of the second fixture 20 , and the vacuuming device is turned on, so that the film 200 is fixed on the film carrying area 21 of the second fixture 20 under the action of the vacuum suction force of the vacuum hole 22 .
  • the diaphragm bearing area 21 of the second fixture 20 is flat, and the planar diaphragm 200 is laid flat on the diaphragm bearing area 21 under the action of the vacuum suction force of the vacuum hole 22 .
  • the film bearing area 21 may also be a concave surface, and the curvature radius of the concave surface is greater than the curvature radius of the film-coated surface of the lens 300 .
  • FIG. 8 is a flowchart showing a specific operation of fixing the film on the second fixture 20 when the film 200 is bonded on the lens 300 by the film bonding apparatus 100 shown in FIG. 2 .
  • the fixing of the diaphragm 200 on the second fixture 20 specifically includes the following steps: :
  • Step 121 Fix the diaphragm 200 on the carrier tape 400 .
  • the film 200 is fixed on the carrier tape 400 by an adhesive material, so that the film 200 is supported by the carrier tape 400 .
  • the carrier tape 400 is made of a flexible material, and the carrier tape 400 can be bent and deformed.
  • the adhesive material for fixing the film 200 and the carrier tape 400 is an optical adhesive sensitive to ultraviolet light. After the film 200 is attached to the lens 300, the carrier tape 400 and the film can be irradiated with ultraviolet light. Sheet 200 is peeled off.
  • the carrier tape 400 is used to carry the film 200 , which can protect the film 200 from being damaged during the subsequent transfer to the film carrying area 21 of the second jig 20 , and can more easily realize the protection of the film 200 200 transmissions.
  • Step 122 transfer the film 200 through the carrier tape 400 to the film carrying area 21 of the second jig 20 , and clamp the carrier tape 400 on both sides of the film 200 by the clamping members 500 to ensure that the film is supported Part of the carrier tape 400 of 200 can be tensioned.
  • the film 200 can be transported to a position opposite to the film carrying area 21 of the second fixture 20 by means of a pulley winding.
  • the two sides of the film 200 on the carrier tape 400 are clamped by the clamping member 500,
  • the side clips 500 ensure that part of the carrier tape 400 carrying the film 200 is kept in a tensioned state, thereby ensuring that the film 200 on the carrier tape 400 is in an unfolded state, so as to facilitate the subsequent film sticking process.
  • Step 123 Drive the diaphragm 200 on the carrier tape 400 to move relative to the second fixture 20 until the carrier tape 400 moves to contact the second fixture 20 .
  • the relative movement between the diaphragm 200 on the carrier tape 400 and the second jig 20 may be to keep the second jig 20 stationary, and move the clamping member 500 holding the carrier tape 400 to drive the carrier tape 400 and The diaphragm 200 on the carrier tape 400 moves toward the second fixture 20 until the carrier tape 400 moves to contact the second fixture 20 .
  • the position of the carrier tape 400 can be kept unchanged, and the second fixture 20 can be moved in the direction of the carrier tape 400 until the carrier tape 400 moves to the same position as the carrier tape 400.
  • the second jig 20 contacts.
  • Step 124 Turn on the vacuuming device communicating with the vacuum hole 22 of the second fixture 20 to adsorb and fix the portion of the carrier tape 400 corresponding to the position of the diaphragm 200 on the diaphragm bearing position 21 of the second fixture 20 through vacuum suction , so that the diaphragm 200 is fixed on the diaphragm bearing position 21 of the second fixture 20 .
  • the film carrying area 21 is a convex surface.
  • the carrier tape 400 and the film 200 on the carrier tape 400 are fixed to the film carrying position by the vacuum suction force at the position of the vacuum hole 22 .
  • the clamping members 500 on both sides of the diaphragm 200 can be further moved in the direction of the second jig 20, so as to tighten the positions of the carrier tape 400 on both sides of the diaphragm 200 through the clamping members 500 to ensure Both ends of the diaphragm 200 carried on the carrier tape 400 can be more stably attached to the diaphragm bearing position 21 , avoiding the problem of the two ends of the diaphragm 200 being lifted due to insufficient vacuum adsorption force, and ensuring the sticking of the diaphragm 200 combined effect.
  • step 110 and step 120 can be changed arbitrarily, that is, step 110 can be performed first, and then step 120 can be performed; or, step 120 can be performed first, and then step 120 can be performed. 110; or, step 110 and step 120 are performed simultaneously.
  • step 130 is further included: acquiring the boundary information of the full aperture of the lens 300 , so as to align the lens 300 with the first fixture 200 .
  • the lens film sticking device 100 further includes a first alignment camera, the first alignment camera has a high resolution, and the photographing range of the first alignment camera can cover the full aperture range of the lens 300, so that it can obtain Boundary information of the full aperture of the lens 300 .
  • the full-aperture boundary information of the lens 300 is obtained by a high-resolution alignment camera, so as to accurately obtain the center position of the lens 300 , and the lens 300 is moved so that the center position of the lens 300 is the same as that of the lens bearing area 11 of the first fixture 10 .
  • the center positions are opposite, that is, the line connecting the center position of the lens 300 and the center position of the lens bearing area 11 of the first fixture 10 is collinear with the optical axis of the lens 200 .
  • the full aperture boundary information of the lens 300 is acquired by the high-resolution first alignment camera, specifically: moving the first alignment camera to the top of the lens 300 , and the direction of the lens of the first alignment camera is toward the lens 300
  • the full aperture of the lens 300 is photographed by the high-resolution first alignment camera, and the boundary information of the imaging of the lens 300 is obtained by the processor, so as to obtain the boundary information of the full aperture of the lens 300 .
  • the center position information of the lens 300 is obtained by calculating the boundary information, so as to obtain the center position of the lens 300 .
  • the first alignment camera is a charge coupled device (charge coupled device, CCD) camera.
  • the photographing range of the first alignment camera can cover the full aperture range of the lens 300 , so as to accurately obtain the center position of the lens 300 .
  • the embodiment of the present application takes pictures of the full aperture of the lens 300 , which can ensure the accuracy of the alignment between the lens 300 and the first jig 10 .
  • the alignment accuracy between the lens 300 and the first fixture 10 can reach 0.05mm-0.1mm.
  • Step 140 Acquire the boundary information of the full aperture of the diaphragm 200 to align the diaphragm 200 with the second fixture 20 .
  • the lens film sticking device 100 further includes a second alignment camera, the second alignment camera has a high resolution, and the photographing range of the second alignment camera can cover the full aperture range of the diaphragm 200 , so that it can Obtain the boundary information of the full aperture of the diaphragm 200 .
  • the full-diameter boundary information of the diaphragm 200 is acquired by a high-resolution alignment camera, so as to accurately obtain the center position of the diaphragm 200, and the diaphragm 200 is moved so that the center of the diaphragm 200 can be aligned with the center of the second fixture 20.
  • the positions are opposite, that is, the line connecting the center of the diaphragm 200 and the center of the second jig 20 is perpendicular to the diaphragm 200 , so that the alignment of the diaphragm 200 and the second jig 20 is realized.
  • the full aperture boundary information of the diaphragm 200 is acquired by the high-resolution second alignment camera.
  • the second alignment camera is moved to the top of the diaphragm 200, and the lens of the second alignment camera is directed toward Diaphragm 200 ; the full aperture of diaphragm 200 is then photographed by the second high-resolution alignment camera, and the boundary information of the imaging of diaphragm 200 is obtained by the processor, thereby obtaining the boundary information of the full aperture of diaphragm 200 .
  • the center position information of the diaphragm 200 is obtained by calculating the boundary information of the full aperture of the diaphragm 200 , so as to obtain the center position of the diaphragm 200 .
  • the second alignment camera is a charge coupled device (CCD) camera.
  • the photographing range of the second alignment camera can cover the entire range of the diaphragm 200 , so that boundary information of the full aperture of the diaphragm 200 can be acquired to accurately acquire the center position of the diaphragm 200 .
  • the embodiment of the present application takes a picture of the full aperture of the diaphragm 200 to ensure the accuracy of the alignment between the diaphragm 200 and the second jig 20 .
  • the alignment accuracy between the diaphragm 200 and the second fixture 20 can reach 0.05mm-0.1mm.
  • the alignment of the lens 300 and the first fixture 10 can be achieved by the first alignment camera
  • the alignment of the diaphragm 200 and the second fixture 20 can be achieved by the second alignment
  • the cameras are implemented without affecting each other. Therefore, steps 130 and 140 can be performed at the same time, thereby improving the efficiency of film sticking.
  • the alignment of the lens 300 with the first fixture 10 and the diaphragm 200 with the second fixture 20 can be realized by the same alignment camera, that is, the alignment camera realizes the alignment of the lens 300 .
  • step 130 is completed first, and then the Step 140; or, complete step 140 first, and then complete step 130.
  • Step 150 Control the relative movement of the first jig 10 and the second jig 20 , so that the lens 300 is gradually attached to the diaphragm 200 from the middle position to the edge position.
  • the second jig 20 can be kept still, and the first jig 10 can be controlled by the control mechanism 30 to gradually move closer to the second jig 20;
  • the control mechanism 30 controls the second fixture 20 to gradually approach the first fixture 10, so that the lens 300 is gradually fitted with the diaphragm 200 from the middle position to the edge position;
  • a jig 10 moves a certain distance, and controls the second jig 20 to move a certain distance, so that the lens 300 is gradually attached to the diaphragm 200 from the middle position to the edge position.
  • the first control mechanism 31 of the control mechanism 30 controls the first cavity 41 to move to the second cavity 42 , so as to realize the movement of the first fixture 10 to the second fixture 20 Partial distance.
  • the first control mechanism 31 controls the first cavity 41 to move to the second cavity 42 until the first cavity 41 and the second cavity 42 are closed, and the first cavity 41 and the second cavity 42 are closed.
  • the closed space is vacuumed, so that the subsequent lamination process of the diaphragm 200 and the lens 300 can be performed in a vacuum environment, so as to avoid air bubbles between the diaphragm 200 and the lens 300 when the diaphragm 200 and the lens 300 are attached.
  • the second control mechanism 32 of the control mechanism 30 controls the second fixture 20 to move toward the first fixture 10 , so that the lens 300 is gradually attached to the diaphragm 200 from the middle position to the edge position.
  • the second jig 20 is a flexible jig, during the process of moving the first jig 10 to the second jig 20, the middle position of the lens 300 first contacts the diaphragm 200, and as the first jig 10 moves to the second jig 20 The jig 10 further moves toward the second jig 20, and the second jig 20 is gradually deformed, so that the lens 300 gradually contacts and fits with the diaphragm 200 from the middle position to the edge position.
  • the first jig 10 and the second jig 20 are disposed opposite to each other. Therefore, the control of the first jig 10 and the second jig 20 in step 150 is performed.
  • the second jig 20 is relatively moved so that the middle position of the lens 300 is gradually attached to the film 200 from the edge position, that is, the first jig 10 and the second jig 20 are controlled to move toward each other, so that the middle of the lens 300 From the position to the edge position, it is gradually attached to the diaphragm 200 .
  • the control of the first jig 10 and the second jig 20 in step 150 to be opposite Moving to make the lens 300 from the middle position to the edge position gradually fit with the film 200 means: turning the first jig 10 or the second jig 20 so that the second jig 20 is opposite to the first jig 10 Setting; and then control the first fixture 10 and the second fixture 20 to move toward each other, so that the lens 300 gradually fits with the diaphragm 200 from the middle position to the edge position.
  • the diaphragm 200 is an optical film having an optical axis, such as a reflective polarizing film, a quarter-wave plate, a half-wave plate, etc., through the method of laminating the diaphragm in the embodiments of the present application,
  • the optical axis deviation between the center position and the edge position of the film 200 after the film 200 is attached can be less than or equal to ⁇ 5°, and the difference between the center and the edge of the optical performance of the film 200 is less than or equal to ⁇ 10%.
  • the method for laminating the film 200 of the present application is simple to operate, and does not need to first heat the flat film 200 through processes such as heating, pressure holding, stretching, softening, etc.
  • step 150 before “the middle position of the lens is gradually attached to the film from the edge position” in step 150, it further includes:
  • Step 141 heating the diaphragm 200 by the second jig 20 .
  • heating the diaphragm 200 can soften the diaphragm 200 , so that the diaphragm 200 can be better attached to the diaphragm bearing area 21 .
  • the diaphragm 200 in the process of attaching the diaphragm 200 to the lens 300 , the diaphragm 200 can be more easily deformed after heating, so that the diaphragm 200 can be smoothly attached to the surface of the lens 300 to prevent the diaphragm 200 from being attached. Problems such as wrinkles occur when the film surface of the lens 300 is applied.
  • the second jig 20 is used to uniformly heat each position of the diaphragm 200, which can ensure that each position of the diaphragm 200 can have the same deformability, and avoid pulling the diaphragm 200 at each position. Wrinkles or changes in the direction of the optical axis are caused by uneven stretching, so as to ensure the quality of the optical elements obtained after the final film lamination is completed.
  • the second jig 20 is used to heat the diaphragm 200. Since the second jig 20 has a certain heat preservation effect, the diaphragm 200 can be heated during the entire lamination process, and the contact between the diaphragm 200 and the lens 300 can be guaranteed. During the lamination process, the diaphragm 200 can always be in a heated state, so as to achieve a better lamination effect.
  • the lens lamination device 100 includes a film heater 600 .
  • the film heater 600 is fixed on the side of the second jig 20 away from the film 200 .
  • the second jig 20 Heating is performed, so that the heat generated by the film heater 600 is transmitted to the second jig 20 , and then the film 200 is heated by the second jig 20 .
  • the second jig 20 since the second jig 20 has a certain heat preservation effect, after the diaphragm heater 600 stops working, the second jig 20 can continue to heat the diaphragm 200, thereby reducing energy consumption.
  • the second jig 20 can generate a heating temperature of 30° C.-150° C. to ensure that the second jig 20 can sufficiently heat the diaphragm 300 to ensure that the diaphragm 200 and the lens 300 can have the same heating temperature. Good fit.
  • step 150 before “the middle position of the lens is gradually attached to the edge position with the film”, the following further includes:
  • Step 142 Heating the lens 300 by the first jig 10 .
  • the lens 300 is heated, so that the temperature difference between the diaphragm 200 and the lens 300 can be reduced during the process of attaching the diaphragm 200 and the lens 300 , and it is ensured that the film 200 and the lens 300 are completely bonded together. After bonding and cooling, the stress between the diaphragm 200 and the lens 300 can be small, thereby ensuring the stability of the bonding between the diaphragm 200 and the lens 300 .
  • the temperature difference between the lens 300 and the film 200 is less than 30°, which can effectively ensure the stability of the fit between the film 200 and the lens 300 .
  • the first jig 10 uniformly heats each position of the lens 300 , so as to ensure that the temperature of each position of the lens 300 is balanced during the lamination process of the diaphragm 200 and the lens 300 .
  • the temperature difference between the lens 300 and the film 200 is less than 10°, which can more effectively ensure the stability of the fit between the film 200 and the lens 300 .
  • the lens lamination device 100 includes a lens heater 700, the lens heater 700 is fixed on the side of the first fixture 10 away from the lens 300, and the lens heater 700 heats the first fixture 10 when working, Therefore, the heat generated by the lens heater 700 is transmitted to the first jig 10 , and then the lens 300 is heated by the first jig 10 .
  • the first jig 10 can have a certain heat preservation effect, so after the lens heater 700 stops working, the first jig 10 can continue to heat the lens 300, thereby reducing energy consumption.
  • the lens heater 700 can generate a heating temperature of 30° C. to 150° C. to ensure that the first fixture 10 can be sufficiently heated, so as to reduce the temperature difference when the film 200 and the lens 300 are attached. .
  • step 142 and step 143 may be performed at any time after step 120 and before step 150 , which is not specifically limited herein. In the embodiment shown in FIG. 7 , step 142 and step 143 are performed after step 140 and before step 150 .
  • the lens 300 after the film 200 is bonded can also be kept under pressure for a certain period of time, so as to ensure the difference between the film 200 and the lens 300.
  • the firmness of the fit Specifically, in some embodiments of the present application, after the diaphragm 200 is attached to the lens 300, the lens 300 after laminating the diaphragm 200 is kept at a pressure of 1-2000kgf and a temperature of 30°C-150°C for 5s. above.
  • an adhesive layer and a release film are laminated on the diaphragm 200 .
  • the adhesive layer can be used to stick the diaphragm 200 on the surface of the lens 300 .
  • the adhesive layer may be various types of transparent adhesive materials such as optically clear adhesive (OCA), pressure sensitive adhesive (PSA).
  • OCA optically clear adhesive
  • PSA pressure sensitive adhesive
  • the thickness of the adhesive layer is 5 ⁇ m-50 ⁇ m, so as to ensure that the film 200 can be stably attached to the lens 300 through the adhesive layer, and at the same time, the thickness of the adhesive layer can be prevented from being too thick and affecting the attachment of the lens 300 The thickness and optical performance of the optical element obtained after the film 200 is combined.
  • the adhesive layer of the lamination film 200 and the lens 300 and the adhesive material of the fixing film 200 and the carrier tape 400 are made of the same material, so as to ensure that the carrier tape 400 and the film 200 will not be affected when the carrier tape 400 and the film 200 are subsequently peeled off.
  • the firmness of the adhesion between the diaphragm 200 and the lens 300 is made of the same material, so as to ensure that the carrier tape 400 and the film 200 will not be affected when the carrier tape 400 and the film 200 are subsequently peeled off.
  • Release film is also known as peeling film, isolation film, separation film or adhesive film.
  • the release film can ensure that the sticking film layer has a certain release force and is used to protect the adhesive layer.
  • the film 200 is attached to the lens 300, and the release film layer needs to be removed, so that the film 200 is attached to the lens 300 through the adhesive layer. Therefore, in these embodiments, before step 150 , the step of removing the release film on the surface of the membrane sheet 200 needs to be further included.
  • the release film when the diaphragm 200 is fixed on the first fixture 10 , the release film is located on the surface of the diaphragm 200 away from the first fixture 10 . After the release film is removed, the adhesive layer on the surface of the diaphragm 200 is opposite to the lens 300 . When the lens 300 is close to the diaphragm 200 , the diaphragm 200 can be attached to the lens 300 .
  • the method before step 150, the method further includes:
  • Step 111 performing surface activation treatment on the surface of the lens 300 .
  • the surface activation treatment of the lens 300 can generate polar groups (such as an oxyhydroxide film) on the surface of the lens 300 or roughen the surface of the lens 300, so that the film 200 can be more firmly adhered to the surface of the lens 300.
  • the surface of the lens 300 when the surface of the lens 300 is subjected to surface activation treatment, the surface of the lens 300 is cleaned, so as to ensure that no impurities exist between the lens 300 and the diaphragm 200 after the filming is completed, so as to ensure the quality of the filming.
  • the surface of the lens 300 is activated by means of plasma treatment, and at the same time, impurities on the surface of the lens 300 can be removed. It can be understood that, in other embodiments of the present application, other cleaning methods can also be used to clean the film-coated surface of the lens 300 .
  • step 111 may be executed at any time before step 150 .
  • step 111 is performed before step 110 , that is, after surface activation treatment is performed on the film-coated surface of the lens 300 , and then the lens 300 is fixed on the first fixture 10 . It can be understood that, in some other embodiments of the present application, step 111 can also be performed at any time after step 110 and between step 150, which is not specifically limited.
  • the method further includes:
  • Step 141 Acquire full-aperture boundary information of the lens 300 and the diaphragm 200 to align the lens 300 and the diaphragm 200 .
  • each position of the lens 300 and each position of the diaphragm 200 may be aligned by a third alignment camera.
  • the third alignment camera when aligning the lens 300 and the diaphragm 200, can be moved between the oppositely disposed lens 300 and the diaphragm 200, and the third alignment camera can obtain the full aperture of the lens 300. Boundary information to determine the center position of the lens 300 . And obtain the boundary information of the full aperture of the diaphragm 200 to determine the center position of the diaphragm 200 .
  • the first jig 10 and the second jig 20 are relatively moved so that the center position of the lens 300 is opposite to the center position of the diaphragm 200 , so as to realize the alignment of the lens 300 and the diaphragm 200 .
  • the diaphragm 200 and the lens 300 are aligned, which can further improve the accuracy of the diaphragm 200 when it is attached to the lens 300 .
  • the third alignment camera can be moved to leave between the lens 300 and the diaphragm 200, so as to prevent the third alignment camera from blocking the lens The relative movement of the 300 and the diaphragm 200 when they are attached.
  • step 141 may also be omitted, and the alignment of the diaphragm 200 and the lens 300 can be achieved by the structural precision matching of the first jig 10 and the second jig 20 .
  • step 150 after completing step 150, it may further include:
  • Step 151 Release the fixation of the lens 300 by the first fixture 10 , and release the fixation of the diaphragm 200 by the second fixture 20 .
  • releasing the fixing of the diaphragm 200 by the second fixture 20 includes: stopping the vacuuming device, so that the second fixture 20 does not generate a vacuum suction force on the diaphragm 200 , Thus, the fixing of the diaphragm 200 by the second jig 20 is released.
  • releasing the fixing of the diaphragm 200 by the second fixture 20 includes: stopping the vacuuming device, so that the second fixture 20 does not generate a vacuum suction force on the diaphragm 200 , Thus, the fixing of the diaphragm 200 by the second jig 20 is released.
  • releasing the fixing of the diaphragm 200 by the second fixture 20 includes: stopping the vacuuming device, so that the second fixture 20 does not generate a vacuum adsorption force on the diaphragm 200 ; And release the clamping of the carrier tape 400 by the clamping member 500 , thereby releasing the fixing of the film 200 by the second jig 20 .
  • Step 152 performing defoaming treatment on the lens 300 that has been pasted with the film 200 .
  • the diaphragm bonding jig 100 further includes a defoaming jig.
  • the lens 300 with the diaphragm 200 taken out from the first jig 10 and the second jig 20 is placed in a defoaming jig, and the lens 300 with the diaphragm 200 is subjected to pressure-maintaining heat preservation treatment, In order to discharge air bubbles between the diaphragm 200 and the lens 300, the optical quality of the optical element is guaranteed.
  • the pressure of the diaphragm 200 is 0.1-1 MPa
  • the temperature is 40-80° C.
  • the heat preservation and pressure holding time is 5 min-1 h, so as to ensure that the diaphragm 200 and the lens 300 can be discharged between the diaphragm 200 and the lens 300.
  • control the temperature, pressure and time of heat preservation and pressure to avoid the influence of the defoaming process on the optical properties of the optical element.
  • the film bonding jig 100 further includes a conveying structure such as a mechanical arm or a pulley.
  • the lens 300 on which the diaphragm 200 has been attached is taken out from the first jig 10 and the second jig 20 by a transmission mechanism such as a mechanical arm or a pulley, and placed in a defoaming jig for defoaming treatment.
  • the method further includes: peeling off the carrier tape 400 from the film 200 .
  • peeling the carrier tape 400 from the film sheet 200 includes: irradiating the position where the film sheet 200 and the carrier tape 400 are attached with ultraviolet light (Ultraviolet Rays, UV), so that the film sheet 200 and the carrier tape 400 are irradiated with ultraviolet light (Ultraviolet Rays, UV).
  • the adhered adhesive layer is cured and deactivated, so that the film 200 and the carrier tape 400 are peeled off.
  • FIG. 9 is a schematic diagram of a working module of a lens lamination device 100 according to an embodiment of the present application.
  • the lens sticking device 100 further includes a memory 101 , a processor 102 , and a lens sticking program stored on the memory 101 and running on the processor 102 .
  • the lens coating program is executed by the processor 102 to control the lens bonding apparatus 100 to perform the above-mentioned lens coating method.

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Abstract

一种镜片(300)的膜片(200)贴合方法及一种镜片(300)贴膜设备(100)。通过控制第一治具(10)与第二治具(20)相对移动，以使镜片(300)的中间位置至边缘位置逐渐与膜片(200)贴合，能够减少膜片(200)与镜片(300)之间气泡的产生，实现较好的贴膜效果。并且，不需要预先对膜片(200)进行处理，也不需要形成膜片(200)后注塑成型得到镜片(300)，从而能够保证贴合后的膜片(200)的光学性能或机械性能，通过简单的膜片(200)贴合方法即能够得到所需的光学元件，并能够保证镜片(300)贴合膜片(200)后得到的光学元件的光学性能及机械性能。

Description

镜片的膜片贴合方法
本申请要求于2020年11月23日提交中国国家知识产权局、申请号为202011327158.1、申请名称为“镜片的膜片贴合方法”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及膜材贴合技术领域，尤其涉及一种镜片的膜片贴合方法。
背景技术
在光学成像领域经常需要贴膜在光学镜片上，以改善光学镜片的成像效果。为了得到平整的贴膜效果，目前，在镜片上贴膜的主要方式为：将平面膜片贴附在薄片基板的表面，再对膜片与基板组成的整体进行热弯，并将热弯后的薄片放于注塑治具中，注塑光学材料后可得到具有与膜片光学特性一致的光学元件。但是，膜片热弯后，由于其本身的特性，极易延展而无法保持初始预弯形状，从而影响最终得到的光学元件的面型精度。并且，由于注塑的光学材料的温度一般比较高，容易影响膜片的光学性能或机械性能。
发明内容
本申请提供一种镜片的膜片贴合方法，能够得到具有较高的面型精度的光学元件，并保证膜片的光学性能及机械性能，保证最终贴合完成得到的光学元件能够具有较好的质量。
第一方面，本申请提供一种镜片的膜片贴合方法，所述膜片贴合方法包括：
将所述镜片固定于第一治具上；
将所述膜片固定于第二治具上，所述第二治具为可变形的柔性治具；
获取所述镜片的全口径的边界信息，以使所述镜片与所述第一治具对位；
获取所述膜片的全口径的边界信息，以使所述膜片与所述第二治具对位；
控制所述第一治具与所述第二治具相对移动，以使所述镜片的中间位置至边缘位置逐渐与所述膜片贴合。
本申请中，通过所述膜片贴合方法能够将平面的膜片从中间位置至边缘位置逐渐与镜片接触并贴合，能够保证平面的膜片从中间位置至边缘位置的变形能够均匀发生，从而避免平面的膜片贴合与镜片上以后，膜片的光学性能、机械性能等发生变化而影响最终贴合完成得到的光学元件的光学性能、机械性能。并且，本申请的膜片贴合方法操作简单，不需要先将平面的膜片经过加温、保压、拉伸、软化等工艺，热成一张具有理想形貌的曲面膜片后，再贴合至镜片上，从而能够在简化贴合方法的同时，避免因为加温、保压、拉伸、软化等工艺而影响贴合后的膜片的光学性能或机械性能。
并且，将所述镜片的中间位置至边缘位置逐渐与所述膜片贴合，从而能够方便膜片与镜片之间的气泡排出，从而保证膜片与镜片的贴合质量。
并且，本申请中，获取所述镜片的全口径的边界信息，以使所述镜片与所述第一治具对位；
获取所述膜片的全口径的边界信息，以使所述膜片与所述第二治具对位。相较于仅对膜 片及镜片的部分位置进行识别对位的方式来说，本申请实施方式获取膜片及镜片的全口径的边界信息，保证膜片与第二治具对位的精确性以及镜片与第一治具对位的精确性。
本申请一些实施方式中，所述镜片的中间位置至边缘位置逐渐与所述膜片贴合之前还包括步骤：
通过所述第二治具对所述膜片进行加热。
本申请实施方式中，对膜片进行加热，能够软化膜片，从而使得膜片能够更加好的贴合于膜片承载区。并且，在膜片与镜片贴合的过程中，由于膜片加热后能够更容易的产生变形，从而使得膜片能够平整的贴合于镜片的表面，避免膜片贴合于镜片的贴膜面时出现褶皱等问题。并且，本申请实施方式中，通过第二治具对膜片的各个位置能够进行均匀的加热，能够保证膜片的各个位置均能够具有同等的变形能力，避免膜片的各个位置拉伸不均而产生褶皱或者光轴方向的改变，从而保证最终膜片贴合完成后得到的光学元件的品质。且通过第二治具为膜片进行加热，由于第二治具具有一定的保温作用，能够在整个贴合过程中对膜片进行加热，能够保证在膜片与镜片的贴合过程中，膜片能够始终处于加热状态，从而实现更好的贴合效果。并且，由于第二治具具有一定的保温效果，因而在膜片加热器停止工作后，第二治具仍能够持续的为膜片进行加热，从而减少能源的消耗。
一些实施方式中，所述镜片的中间位置至边缘位置逐渐与所述膜片贴合之前还包括步骤：
通过所述第一治具对所述镜片进行加热，以使所述镜片与所述膜片贴合之前的温差小于30°。
本申请实施方式中，对镜片进行加热，从而在膜片与镜片贴合的过程中能够减小膜片与镜片之间的温度差，保证在完成膜片与镜片的贴合并冷却后，膜片与镜片之间的应力能够较小，进而保证膜片与镜片之间贴合的稳定性。一些实施方式中，镜片与膜片的温度差小于30°，能够有效的保证膜片与镜片之间贴合的稳定性。本申请实施方式中，通过第一治具对镜片的各个位置的均匀加热，从而保证膜片与镜片的贴合过程中，保证镜片的各个位置的温度均衡。
一些实施方式中，通过第一对位相机获取所述镜片的全口径的边界信息，所述第一对位相机的拍照范围覆盖所述镜片的全口径；
通过第二对位相机获取所述镜片的全口径的边界信息，所述第二对位相机的拍照范围覆盖所述膜片的全口径。
由于第一对位相机的拍照范围能够覆盖所述镜片的全口径，从而能够通过第一对位相机获取所述镜片的全口径的边界信息，进而能够更精确的获取镜片的中心位置，以保证镜片与第一治具对位的精确性。由于第二对位相机的拍照范围能够覆盖所述膜片的全口径，从而能够通过第二对位相机获取所述膜片的全口径的边界信息，进而能够更精确的获取膜片的中心位置，以保证膜片与第二治具对位的精确性。
一些实施方式中，所述镜片的膜片贴合方法还包括：
解除所述第一治具对所述镜片的固定，并解除所述第二治具对所述膜片的固定；
将完成贴合所述膜片的所述镜片进行脱泡处理，以排除所述膜片与所述镜片之间的气泡。
本实施方式中，通过将完成贴合所述膜片的所述镜片进行脱泡处理，能够进一步排除所述膜片与所述镜片之间的气泡，从而进一步的提高膜片与镜片的贴合效果。
一些实施方式中，所述脱泡处理包括：
将完成贴合所述膜片的所述镜片放置于脱泡治具内，对完成贴合所述膜片的所述镜片进行保压保温处理，所述保压保温处理时的压力为0.1-1MPa，温度为40-80℃，保温保压时间 为5min-1h。本实施方式中，通过充分的保压保温处理，能够充分的排除镜片与膜片之间的气泡，以保证镜片与膜片的贴合效果。
一些实施方式中，所述膜片的尺寸与所述镜片的有效口径一致，或者，所述膜片的尺寸小于所述镜片的有效口径，从而避免在膜片贴合完成以后，还需要通过其它的工序(如激光切割)将多余的膜片切除，从而减少加工工序。并且，还能够保证膜片贴合于镜片上时不容易出现褶皱。
一些实施方式中，所述第二治具包括膜片承载区，所述膜片固定于所述膜片承载区；所述镜片贴合所述膜片的表面为贴膜面；
所述镜片的所述贴膜面为凹面时，所述第二治具的所述膜片承载区为凸面，且所述膜片承载区的曲率半径小于所述贴膜面的曲率半径；所述镜片的所述贴膜面为凸面时，所述第二治具的所述膜片承载区为平面或者凹面，且所述膜片承载区的曲率半径大于所述贴膜面的曲率半径。
本实施方式中，对于镜片不同的贴膜面的形状，相应的是有具有对应的膜片承载区形状的第二治具，从而保证不管在镜片的贴膜面为凹面或者凸面，均能够实现镜片的中间位置至边缘位置逐渐与所述膜片，保证镜片的贴膜质量。
一些实施方式中，所述膜片承载区阵列设置有真空孔，所述膜片通过所述真空孔的真空吸附力固定于所述膜片承载区。
一些实施方式中，所述镜片的有效口径范围为1-60mm，保证膜片的能够平整的贴合于镜片的贴合面上，而不产生褶皱，以保证得到较好的膜片贴合效果。
一些实施方式中，所述镜片的贴膜面为凸面时，所述贴膜面的曲率半径与所述贴膜面的贴合口径的比值大于1.2；所述镜片的贴膜面为凹面时，所述贴膜面的曲率半径与所述贴膜面的贴合口径的比值大于1.5，从而保证膜片贴合于镜片上时不会产生褶皱。
一些实施方式中，所述镜片贴合所述膜片的表面为贴膜面，所述贴膜面的面型为球面、非球面或具有一个反曲的自由曲面。
一些实施方式中，所述膜片固定于所述第二治具上包括：
将所述膜片固定于载带上；
通过夹持件夹持于所述膜片两侧的所述载带，并使所述膜片与所述第二治具相对，所述第二治具在所述膜片所在平面的正投影覆盖所述膜片；
控制所述载带与所述第二治具相对移动至所述载带上的所述膜片贴合于所述第二治具。
本实施方式中，通过载带承载膜片，能够保护膜片在后续传输至第二治具的膜片承载区的过程中不容易受到损坏，并能够更容易实现对膜片的传输。
一些实施方式中，对控制所述第一治具与所述第二治具相对移动之前还包括：
获取所述镜片及所述膜片的全口径的边界信息，以使所述镜片与所述膜片对位，以进一步的提高膜片与镜片贴合的精度。
一些实施方式中，控制所述第一治具与所述第二治具相对移动之前还包括：
对所述镜片的表面进行表面活化处理。
本申请实施方式中，对镜片的表面活化处理，能够使得膜片能够更加牢固的粘附于镜片的表面，并能够对镜片的表面进行清洁，以能够保证贴膜完成后镜片与膜片之间不会有杂质存在，保证贴膜质量。
第二方面，本申请还提供一种镜片贴膜设备，所述镜片贴膜设备包括：存储器、处理器 及存储在所述存储器上并可在所述处理器上运行的镜片贴膜程序；所述镜片贴膜程序被所述处理器执行以实现上述的镜片贴膜方法。
由于本申请提供的镜片贴膜设备能够执行上述的镜片贴膜方法，从而通过本申请的镜片贴膜设备能够将平面的膜片从中间位置至边缘位置逐渐与镜片接触并贴合，能够保证平面的膜片从中间位置至边缘位置的变形能够均匀发生，从而避免平面的膜片贴合与镜片上以后，膜片的光学性能、机械性能等发生变化而影响最终贴合完成得到的光学元件的光学性能、机械性能。通过本申请的镜片贴膜设备执行的膜片贴合方法操作简单，不需要先将平面的膜片经过加温、保压、拉伸、软化等工艺，热成一张具有理想形貌的曲面膜片后，再贴合至镜片上，从而能够在简化贴合方法的同时，避免因为加温、保压、拉伸、软化等工艺而影响贴合后的膜片的光学性能或机械性能。
并且，通过本申请的镜片贴膜设备，能够方便膜片与镜片之间的气泡排出，从而保证膜片与镜片的贴合质量。在镜片贴合膜片的过程中，能够获取所述镜片及所述膜片的全口径的边界信息，能够保证膜片与第二治具对位的精确性以及镜片与第一治具对位的精确性。
附图说明
为更清楚地阐述本申请的构造特征和功效，下面结合附图与具体实施例来对其进行详细说明。
图1为本申请一种实施方式的镜片贴膜设备的结构示意图；
图2为本申请另一种实施方式的镜片贴膜设备的结构示意图；
图3为镜片的贴膜面为凸面、第二治具的膜片承载区为平面时，镜片与膜片的贴合状态示意图；
图4为镜片的贴膜面为凸面、第二治具的膜片承载区为凹面时，镜片与膜片的贴合状态示意图；
图5为镜片的贴膜面为凹面、第二治具的膜片承载区为凸面时，镜片与膜片的贴合状态示意图；
图6所示为镜片的贴膜面为平面、第二治具的膜片承载区为凸面时，镜片与膜片的贴合状态示意图；
图7为本申请一些实施方式的镜片的膜片贴合方法的流程示意图；
图8为采用图2所述膜片贴合装置在镜片上贴合膜片时，将膜片固定于第二治具上的具体操作流程图；
图9为本申请一种实施方式的镜片贴膜设备的工作模块示意图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行描述。
本申请提供一种镜片的膜片贴合方法，用于在镜片上贴合膜片。通过本申请的镜片的膜片贴合方法，能够避免膜片与曲面盖板之间出现气泡或者褶皱等缺陷，并能够保证镜片贴膜完成后得到的光学元件的面型精度、光学性能及机械性能。
本申请中，镜片贴膜完成后的光学元件可以应用于各种类型的终端上。例如，本申请一些实施方式中，终端可以为增强现实(Augmented Reality，AR)眼镜、虚拟现实(Virtual Reality，VR)眼镜、手机、平板、相机等。
本申请中，膜片也可以为任意类型的膜片。例如，膜片可以为反射偏振膜、四分之一波片、二分之一波片等具有光轴的光学膜，也可以为增透膜、抗划伤膜、光散射膜、防雾膜等各种类型光学膜片。本申请中，通过在镜片上贴合不同类型的膜片，可以对应的提高镜片贴膜完成后的光学元件的光学性能或机械性能。本申请一些实施方式中，膜片的厚度为0.02mm-0.5mm，能够在提高镜片贴膜完成后的光学元件的光学性能或机械性能的同时，避免膜片的厚度过厚而影响光学元件的厚度及光线的透过率等光学性能。
本申请中，通过镜片贴膜设备将膜片贴合至镜片上。请参阅图1，图1所示为本申请一种实施方式的镜片贴膜设备100的结构示意图。本实施方式中，通过镜片贴膜设备100将膜片200贴合于镜片300上。具体的，本实施方式中，镜片贴膜设备100包括第一治具10、第二治具20及驱动机构30。其中，第一治具10能够用于固定镜片300，第二治具20能够用于固定膜片200，驱动机构30能够用于驱动第一治具10与第二治具20相对移动，以使固定于第一治具10上的镜片300与固定于第二治具20上的膜片200相对移动，从而将膜片200贴合于镜片300上。
具体的，本申请实施方式中，第一治具10为刚性治具，能够较为稳固的固定镜片300。具体的，本申请一些实施方式中，第一治具10可以为具有一定强度、不易变形的塑料(如耐高温尼龙塑料等)、金属(如铝、铁等)、合金(如铝合金等)、陶瓷等材料制成。
一些实施方式中，第一治具10为刚性夹具，镜片300夹紧固定于第一治具10。可以理解的是，本申请的其它实施方式中，第一治具10也可以为其它的固定结构。例如，一些实施方式中，第一治具10的镜片安装区11可以设置有真空吸附区，镜片300能够通过真空吸附作用固定于第一治具10上；或者，一些实施方式中，第一治具10上包括有卡合部，镜片300通过卡合部卡紧固定于第一治具10。
第二治具20为可变形的柔性治具，以便于后续将膜片200贴合于镜片300上。具体的，本实施方式中，第二治具20的制成材料可以为橡胶、硅胶等柔性材料。
本申请实施方式中，第一治具10具有镜片安装区11，镜片300安装于镜片安装区11内。第二治具20包括膜片承载区21，膜片200固定于膜片承载区21内。本实施方式中，膜片承载区21与镜片安装区11正对设置，从而固定于膜片承载区21内的膜片200能够精准的贴合至镜片300上。
一些实施方式中，镜片安装区11的大小可以根据安装镜片300的大小相应的进行调节，以固定不同大小的镜片300。
本申请的一些实施方式中，第一治具10的镜片安装区11的表面还可以覆盖铁氟龙等保护层，镜片300固定于第一治具10上时与保护层进行接触，从而避免第一治具10固定镜片300时对镜片300产生损坏。并且，本申请一些实施方式中，保护层背离第一治具10的表面与镜片300朝向第一治具10的表面的形状基本相同，即镜片300固定于第一治具10上时，镜片300的表面能够基本与保护层进行贴合，从而保证第一治具10能够对镜片300起到良好的支撑及限位作用，进一步保证镜片300在第一治具10上能够得到稳定的固定。
本申请一些实施方式中，膜片承载区21内设置有阵列设置的真空孔22。真空孔22能够与抽真空设备连接，从而产生真空吸附力，以将膜片200吸附固定于膜片承载区21。可以理解的是，本申请的其它一些实施方式中，膜片200也可以通过其它一些方式固定于膜片承载区21。例如，请参阅图2，图2所示为本申请另一种实施方式的镜片贴膜设备100的结构示意图。图2所示实施方式中，膜片200固定于载带400上，镜片贴膜设备100还包括夹持件500。夹持件500夹持载带400，并夹持于膜片200的两侧，以张紧承载膜片200的载带400。夹持件500能够相对 第二治具20进行移动直至载带400与第二治具20的膜片承载区21接触，并将承载膜片200的部分载带400张紧贴合于膜片承载区21上，从而实现膜片20固定于膜片承载区21上。一些实施方式中，膜片承载区21阵列设置有真空孔22，镜片贴膜设备100也包括夹持件500，膜片200固定于载带400上。通过真空孔22的吸附力及夹持件500带动载带400的张紧力共同作用将载带400对应于膜片承载区21的位置固定于膜片承载区21，从而使得承载于载带400上的膜片200固定于膜片承载区21。本实施方式中，由于真空孔22的吸附力及夹持件500的夹持作用的共同作用，能够使得载带400对应于膜片承载区21的位置能够更加牢固稳定的贴合于膜片承载区21，进而能够使得膜片200更加牢固稳定的贴合于膜片承载区21。
需要说明的是，本申请的一些实施方式中，膜片200固定于载带400上，在完成膜片200贴附镜片300后，载带400能够容易的与膜片200剥离。例如，一些实施方式中，膜片200通过光敏胶固定于载带400上，在完成膜片200贴附镜片300后，通过紫外照射，即能够将膜片200与载带400容易的剥离开，以得到所需的光学器件。
本申请实施方式中，第一治具10与第二治具20相对设置，从而使得固定于第一治具10上的镜片300与固定于第二治具20上的膜片200相对，通过相对移动第一治具10及第二治具20即能够将膜片200贴合于镜片300上。本实施方式中，第一治具10位于第二治具20的上方，第一治具10能够进行朝向第二治具20的方向移动。可以理解的是，本申请的其它实施方式中，第二治具20也可以位于第一治具10的上方，第二治具20也能够进行朝向第一治具10方向的移动。
可以理解的是，本申请的其它一些实施方式中，第一治具10与第二治具20也可以以其它的位置关系进行设置。例如，一些实施方式中，第一治具10与第二治具20也可以并列设置，在后续膜片200贴合于镜片300的过程中，可以翻转第二治具20以使第二治具20与第一治具10相对设置。
本申请实施方式中，第二治具20的膜片承载区21的形状与镜片300的贴膜面的形状相匹配，从而保证承载于膜片承载区21上的膜片200贴合于镜片300上时，能够有较好的贴合效果。
具体的，镜片300包括相对设置的入光表面301及出光表面302，光线经入光表面301入射至镜片300内，并经出光表面302进行出光。本申请实施方式中，镜片300包括贴膜面，膜片200贴合于贴膜面上。一些实施方式中，镜片300的贴膜面可以为入光表面301或出光表面302，即将膜片200贴合于入光表面301或出光表面302上，此时，镜片300的贴膜面仅有一个。其它一些实施方式中，镜片300的入光表面301及出光表面302均可以为贴膜面，即镜片300的入光表面301及出光表面302上可以均贴合有膜片，此时，镜片300的贴膜面为两个。本申请中，将镜片300固定于第一治具10上时，镜片300需要进行膜片贴合的贴膜面背离第一治具10，从而便于膜片200贴合于镜片300的贴膜面上。
本申请中，镜片300的贴膜面可以为球面、非球面或者具有一个反曲的自由曲面。其中，具有一个反曲的自由曲面即表示该贴膜面的两侧均只有一个顶点。例如，具有一个反曲的自由曲面可以为凹面或者凸面，或者，也可以为边缘为平面、中间区域为凹面或者凸面自由曲面。
一些实施方式中，镜片300的贴膜面为凸面，第二治具20的膜片承载区21可以为平面或者凹面。当第二治具20的膜片承载区21为凹面时，膜片承载区21的曲率半径大于镜片300的贴膜面的曲率半径。请参阅图3及图4，图3所示为镜片300的贴膜面为凸面、第二治具20的膜片承载区21为平面时，镜片300与膜片200的贴合示意图；图4所示为镜片300的贴膜面为凸面、第二治具20的膜片承载区21为凹面时，镜片300与膜片200的贴合示意图。当镜片300的贴膜面为 凸面，第二治具20的膜片承载区21为平面或者凹面，且膜片承载区21的曲率半径大于镜片300的贴膜面的曲率半径时，能够保证第一治具10与第二治具20相互靠近，以使固定于第一治具10上的镜片300与固定于第二治具20上的膜片200贴合时，膜片200的中心区域至边缘区域能够逐渐与镜片300贴合，从而能够较好的排除膜片200与镜片300之间的空气，避免膜片200与镜片300贴合过程中产生气泡。
一些实施方式中，镜片300的贴膜面为凹面时，第二治具20的膜片承载区21为凸面，且膜片承载区21的曲率半径小于镜片300的贴膜面的曲率半径。一些实施方式中，膜片承载区21的中心位置的曲率半径可以小于凹面的贴膜面的曲率半径的1.5倍，从而减小膜片200与镜片300贴合时产生中心气泡的风险。请参阅图5，图5所示为镜片300的贴膜面为凹面、第二治具20的膜片承载区21为凸面时，镜片300与膜片200的贴合示意图。当镜片300的贴膜面为凹面，第二治具20的膜片承载区21为凸面，且膜片承载区21的曲率半径小于镜片300的贴膜面的曲率半径时，能够保证第一治具10与第二治具20相互靠近，以使固定于第一治具10上的镜片300与固定于第二治具20上的膜片200贴合时，膜片200的中心区域至边缘区域逐渐与镜片300贴合，从而能够较好的排除膜片200与镜片300之间的空气，避免膜片200与镜片300贴合过程中产生气泡。
可以理解的是，本申请的一些实施方式中，镜片300的贴合面也可以为平面。此时，第二治具20的膜片承载区21可以为凸面。请参阅图6，图6所示为镜片300的贴膜面为平面、第二治具20的膜片承载区21为凸面时，镜片300与膜片200的贴合示意图。当镜片300的贴合面为平面，第二治具20的膜片承载区21为凸面时，承载于膜片承载区21上的膜片200能够与镜片300的中心区域优先接触，在第一治具10与第二治具20的进一步靠近过程中，膜片200的中心区域至边缘区域逐渐与镜片300贴合，从而能够较好的排除膜片200与镜片300之间的空气，避免膜片200与镜片300贴合过程中产生气泡。
本申请实施方式中，膜片200为平面膜片。一些实施方式中，膜片200的尺寸大小与镜片300的有效口径的相同或者略小于镜片300的有效口径，从而避免在膜片200贴合完成以后，还需要通过其它的工序(如激光切割)将多余的膜片200切除，从而减少加工工序。并且，还能够保证膜片200贴合于镜片300上时不容易出现褶皱。例如，本申请一些实施方式中，镜片300为边缘为平面，中间位置为凹面或者曲面，膜片200的直径小于镜片300的有效口径时，膜片200仅覆盖镜片300的中间位置，而不覆盖镜片300的边缘，从而保证能够实现所需的光学效果的同时，避免膜片200覆盖中间位置至边缘位置的曲率急速变化而产生气泡的问题。需要说明的是，本申请实施方式中，镜片300的有效口径是指镜片能够起到实际光学作用的部分镜片的口径。例如，当镜片300的边缘为平面，中间位置为凹面或者曲面，镜片的边缘平面部分一般为承靠结构，方便镜片的安装，而不会对光路的传输起到实际作用，对光路产生实际作用的为镜片200的中间凹面或者凸面的部分，因此，镜片200的有效口径为镜片200的中间凹面或者凸面的部分的口径。另外，需要说明的是，本申请的镜片300可以为圆形镜片，也可以为方形镜片等其它形状的镜片，在此不进行具体限制。膜片200的形状与镜片300的形状相同。并且，膜片200的尺寸大小与镜片300的有效口径的相同或者略小于镜片300的有效口径具体为，膜片的各个方向上的尺寸均与镜片300对应的各个方向上的尺寸大小相同或者略小。例如，本申请一些实施方式中，镜片300及膜片200均为圆形，膜片200的尺寸大小与镜片300的有效口径的相同或者略小于镜片300的有效口径即为：膜片200的直径小于或等于镜片300的有效口径。
本申请的一些实施方式中，镜片300的有效口径范围为1-60mm。本申请实施方式中，由 于膜片200为平面膜片，平面膜片贴合于镜片300的贴合面上。当镜片300的贴合面为曲面时，膜片200会产生一定的变形，以保证膜片200的各个位置均能够平整的贴合于贴合面上，避免褶皱的产生。本申请的一些实施方式中，镜片300的有效口径范围在1-60mm以内，保证膜片200的能够平整的贴合于镜片300的贴合面上，而不产生褶皱，以保证得到较好的膜片贴合效果。一些实施方式中，镜片300的贴膜面为凸面时，贴膜面的曲率半径与贴膜面的贴合口径的比值大于1.2；镜片300的贴膜面为凹面时，贴膜面的曲率半径与贴膜面的贴合口径的比值大于1.5，从而保证膜片200贴合于镜片300上时不会产生褶皱。需要说明的是，本申请实施方式中，当贴膜面为球面时，贴膜面的曲率半径即为球面的贴膜面的曲率半径；当贴膜面为非球面或者自由曲面时，贴膜面的曲率半径是指贴膜面的拟合后贴膜面面型最靠近的球面的曲率半径。贴膜面的贴合口径是指膜片200贴合在镜片300上时，膜片正投影至垂直于镜片的光轴的平面上产生的投影的尺寸大小。
请重新参阅图1，本申请一些实施方式中驱动机构30包括第一驱动机构31及第二驱动机构32。其中，第一驱动机构31与第一治具10进行连接，第二驱动机构32与第二治具20进行连接。第一驱动结构31用于驱动第一治具10向第二治具20的方向移动，第二驱动机构32用于驱动第二治具20向第一治具10的方向移动，从而使固定于第二治具20上的膜片200与固定于第一治具10上的镜片300贴合。
本申请实施方式中，第一驱动机构31及第二驱动机构32可以为丝杆驱动机构、导轨驱动机构、气缸驱动机构等驱动机构。具体的，图1所示实施方式中，第一驱动结构31为导轨驱动机构，导轨驱动机构包括导轨311及连接于导轨311一端的导轨电机312，第一治具10与导轨311进行连接，能够在导轨电机312的驱动下沿导轨311进行移动。第二驱动机构32为气缸驱动机构，气缸驱动机构包括气缸321及与气缸321连接的连杆322，第二治具20与连杆322远离气缸321的一端连接，在气缸321的驱动下，第二治具20能够在连杆322的延伸方向上进行移动。本实施方式中，连杆322的延伸方向为第二治具20朝向第一治具10的方向。
可以理解的是，本申请的其它实施方式中，第一驱动机构31及第二驱动机构32也可以其它类型的驱动机构，以在驱动机构的驱动下产生相对移动。
请参阅图2，本申请的其它一些实施方式中，驱动机构30还包括第三驱动结构33，第三驱动机构33与夹持件500进行连接，以驱动夹持件500夹紧或者放开载带400。可以理解的是，本实施方式中，夹持件500也可以为丝杆驱动机构、导轨驱动机构、气缸驱动机构等各种类型的驱动机构。
请重新参阅图1及图2，本申请的一些实施方式中，镜片贴膜设备100还可以包括第一腔体41及与第一腔体41配合使用的第二腔体42。本申请一些实施方式中，第一治具10位于第一腔体41内，第二治具20位于第二腔体42内。第一腔体41与第二腔体42相对设置，并且，第一腔体41与第二腔体42能够相对移动至与第一腔体41与第二腔体42盖合形成密闭空间，从而使第一治具10与第二治具20位于密闭空间内，进而使得膜片200与镜片300的贴合过程在密闭空间内进行，避免外界的杂质对膜片200与镜片300的之间，提高贴合质量。并且，一些实施方式中，密闭空间能够与抽真空装置进行连接，抽真空装置将密闭空间内抽真空形成真空环境，从而能够进一步的避免膜片200与镜片300贴合时膜片与镜片之间产生气泡，进一步的提高膜片200与镜片300的贴合质量。
本实施方式中，第一治具10位于第一腔体41内，第一驱动机构31与第一腔体41连接，以驱动第一腔体41相对第二腔体42进行移动。本实施方式中，第一治具10能够通过第一腔体41 与第一驱动机构31的连接。
本申请还提供一种镜片的膜片贴合方法，用于将膜片200贴合于镜片300上。本申请实施方式中，能够通过镜片贴膜设备100将对不同镜片300的不同形状的贴膜面上进行膜片200。具体的，本申请中，通过图1所示的镜片贴膜设备100对贴膜面为凸面的镜片300贴合膜片200为例，以及通过图2所示的镜片贴膜设备100对贴膜面为凹面的镜片300贴合膜片200为例，对本申请的镜片300的膜片200的贴合方法进行说明。请参阅图7，图7所示为本申请一些实施方式的镜片300的膜片200贴合方法的流程示意图。本申请实施方式中，膜片200贴合于镜片300上的贴合方法具体包括：
步骤110：将镜片300固定于第一治具10上。
本申请实施方式中，将镜片300安装于第一治具10中，以固定镜片300。并且，镜片300安装于第一治具10中时，镜片300需要贴合膜片200的贴膜面背离第一治具10，以便于后续的膜片的贴合。
本申请实施方式中，镜片300的贴膜面可以为凸面、凹面或平面。例如，图1所示实施方式中，固定于第一治具10上的镜片300的贴膜面为凸面；图2所示实施方式中，固定于第一治具10上的镜片300的贴膜面为凹面。
步骤120：将膜片200固定于第二治具20上。
本申请实施方式中，将膜片200固定于第二治具20的膜片承载区21，以固定膜片200。一些实施方式中，如将膜片200固定于图1所示实施方式膜片贴合装置100的第二治具20上时，将膜片200固定于第二治具20上具体包括：
传输膜片200至第二治具20的膜片承载区21，并开启抽真空装置，使得膜片200在真空孔22的真空吸附力作用下固定于第二治具20的膜片承载区21。
图1所示实施方式中，第二治具20的膜片承载区21为平面，平面的膜片200在真空孔22的真空吸附力作用下平铺于膜片承载区21。可以理解的是，本申请的其它一些实施方式中，膜片承载区21也可以为凹面，且凹面的曲率半径大于镜片300的贴膜面的曲率半径。
请参阅图8，图8所示为采用图2所示的膜片贴合装置100在镜片300上贴合膜片200时，将膜片固定于第二治具20上的具体操作流程图。本申请其它一些实施方式中，如将膜片200固定于图2所示实施方式膜片贴合装置100的第二治具20上时，将膜片200固定于第二治具20上具体包括：
步骤121：将膜片200固定于载带400上。
具体的，将膜片200通过胶材固定于载带400上，以通过载带400承载膜片200。其中，载带400为柔性材料制成，载带400能够进行弯曲变形。本申请一些实施方式中，固定膜片200与载带400的胶材为对紫外光敏感的光学胶，在膜片200贴合于镜片300上以后，可以通过紫外光照射将载带400与膜片200剥离。
本实施方式中，通过载带400承载膜片200，能够保护膜片200在后续传输至第二治具20的膜片承载区21的过程中不容易受到损坏，并能够更容易实现对膜片200的传输。
步骤122：通过载带400传输膜片200至与第二治具20的膜片承载区21相对，并通过夹持件500夹持位于膜片200两侧的载带400，以保证承载膜片200的部分载带400能够张紧。
一些实施方式中，膜片200能够通过带轮卷绕的方式传输至与第二治具20的膜片承载区21相对的位置。并且，将膜片200传输至与第二治具20的膜片承载区21相对的位置时，再通过夹持件500夹紧载带400上的膜片200的两侧，通过膜片200两侧的夹持件500保证承载膜片200的 部分载带400保持张紧状态，从而保证位于载带400上的膜片200处于展开状态，以便于后续的贴膜过程的进行。
步骤123：驱动载带400上的膜片200与第二治具20相对移动，至载带400移动至与第二治具20接触。
本申请中，驱动载带400上的膜片200与第二治具20相对移动可以为保持第二治具20不动，移动夹持载带400的夹持件500，以带动载带400及位于载带400上的膜片200向第二治具20移动，直至载带400移动至与第二治具20接触。或者，驱动载带400上的膜片200与第二治具20相对移动也可以保持载带400的位置不变，向载带400的方向移动第二治具20，至载带400移动至与第二治具20接触。
步骤124：开启与第二治具20的真空孔22连通的抽真空装置，以通过真空吸力将载带400对应于膜片200位置的部分吸附固定于第二治具20的膜片承载位置21，从而实现膜片200固定于第二治具20的膜片承载位置21。
本申请的一些实施方式中，膜片承载区21为凸面，在开启抽真空装置以将载带400及载带400上的膜片200通过真空孔22位置的真空吸附力固定于膜片承载位置21的同时，还可以向第二治具20的方向进一步的移动膜片200两侧的夹持件500，以通过夹持件500拉紧载带400位于膜片200的两侧的位置，保证承载于载带400上的膜片200的两端能够更加稳固的贴合于膜片承载位置21，避免由于真空吸附力不足而产生膜片200两端翘起的问题，保证膜片200的贴合效果。
可以理解的是，本申请的镜片的膜片贴合方法中，步骤110与步骤120的顺序可以任意变化，即可以先进行步骤110，再进行步骤120；或者，先进行步骤120，再进行步骤110；或者，步骤110与步骤120同时进行。
请重新参阅图7，完成步骤120后，还包括步骤130：获取镜片300的全口径的边界信息，以使镜片300与第一治具200对位。
本申请一些实施方式中，镜片贴膜装置100还包括第一对位相机，第一对位相机具有高分辨率，且第一对位相机的拍照范围能够覆盖镜片300的全口径范围，从而能够获取镜片300的全口径的边界信息。通过高分辨率的对位相机获取镜片300的全口径的边界信息，从而准确的获取镜片300的中心位置，移动镜片300以使镜片300的中心位置与第一治具10的镜片承载区域11的中心位置相对，即镜片300的中心位置与第一治具10的镜片承载区域11的中心位置的连线与镜片200的光轴共线。从而实现镜片300与第一治具10的对位。其中，通过高分辨率的第一对位相机获取镜片300的全口径的边界信息，具体为：移动第一对位相机至镜片300的正上方，并且第一对位相机的镜头方向朝向镜片300；通过高分辨率的第一对位相机对镜片300的全口径进行拍照，通过处理器获取镜片300成像的边界信息，从而得到镜片300的全口径的边界信息。通过边界信息计算得到镜片300的中心位置信息，从而获取镜片300的中心位置。具体的，本实施方式中，第一对位相机为电荷耦合器件(charge coupled device,CCD)相机。本实施方式中，第一对位相机的拍照范围能够覆盖镜片300的全口径范围，以准确的获取镜片300的中心位置。相较于仅对镜片300的部分位置进行识别对位的方式来说，本申请实施方式对镜片300的全口径进行拍照，能够保证镜片300与第一治具10对位的精确性。本申请一些实施方式中，镜片300与第一治具10的对位精度可以达到0.05mm-0.1mm。
步骤140：获取膜片200的全口径的边界信息，以使膜片200与第二治具20对位。
本申请一些实施方式中，镜片贴膜装置100还包括第二对位相机，第二对位相机具有高分 辨率，且第二对位相机的拍照范围能够覆盖膜片200的全口径范围，从而能够获取膜片200的全口径的边界信息。通过高分辨率的对位相机获取膜片200的全口径的边界信息，从而准确的获取膜片200的中心位置，移动膜片200以使膜片200的中心能够与第二治具20的中心位置相对，即膜片200的中心与第二治具20的中心的连线垂直于膜片200，从而实现膜片200与第二治具20的对位。其中，通过高分辨率的第二对位相机获取膜片200的全口径的边界信息，具体为：移动第二对位相机至膜片200的正上方，并且第二对位相机的镜头方向朝向膜片200；再通过高分辨率的第二对位相机对膜片200的全口径进行拍照，通过处理器获取膜片200成像的边界信息，从而获得膜片200的全口径的边界信息。通过膜片200的全口径的边界信息计算得到膜片200的中心位置信息，从而获取膜片200的中心位置。具体的，本实施方式中，第二对位相机为电荷耦合器件(charge coupled device,CCD)相机。本实施方式中，第二对位相机的拍照范围能够覆盖膜片200的全范围，从而能够获取膜片200的全口径的边界信息，以准确的获取膜片200的中心位置。相较于仅对膜片200的部分位置进行识别对位的方式来说，本申请实施方式对膜片200的全口径进行拍照，保证膜片200与第二治具20对位的精确性。本申请一些实施方式中，膜片200与第二治具20的对位精度可以达到0.05mm-0.1mm。
需要说明的是，本申请实施方式中，由于镜片300与第一治具10的对位可以通过第一对位相机实现，膜片200与第二治具20的对位可以通过第二对位相机实现，相互之间不会有影响，因此，步骤130与步骤140可以同时进行，从而提高贴膜效率。可以理解的是，本申请的其它实施方式中，镜片300与第一治具10及膜片200与第二治具20的对位可以通过同一个对位相机实现，即对位相机实现镜片300与第一治具10进行对位后，再移动至与第二治具20对应的位置，再对膜片200与第二治具20进行对位，此时，即先完成步骤130，再完成步骤140；或者，先完成步骤140，再完成步骤130。
步骤150：控制第一治具10与第二治具20相对移动，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合。
本申请实施方式中，可以保持第二治具20不动，通过控制机构30控制第一治具10逐渐靠近第二治具20进行移动；或者，也可以保持第一治具10不动，通过控制机构30控制第二治具20逐渐靠近第一治具10，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合；或者，一些实施方式中，也可以通过控制机构30控制第一治具10移动一定的距离，并控制第二治具20移动一定的距离，从而使镜片300的中间位置至边缘位置逐渐与膜片200贴合。具体的，图1所示实施方式中，先通过控制机构30的第一控制机构31控制第一腔体41向第二腔体42移动，从而实现第一治具10向第二治具20移动部分距离。第一控制机构31控制第一腔体41向第二腔体42移动至第一腔体41与第二腔体42盖合，并对第一腔体41与第二腔体42盖合形成的密闭空间抽真空处理，以使得后续的膜片200与镜片300的贴合过程能够在真空环境内进行，以避免膜片200与镜片300贴合时膜片200与镜片300之间产生气泡。之后，在通过控制机构30的第二控制机构32控制第二治具20向第一治具10移动，从而使镜片300的中间位置至边缘位置逐渐与膜片200贴合。
本申请实施方式中，由于第二治具20为柔性治具，移动第一治具10向第二治具20移动的过程中，镜片300的中间位置先与膜片200接触，随着第一治具10进一步的向第二治具20移动，第二治具20逐渐发生形变，从而实现镜片300的中间位置至边缘位置逐渐与膜片200接触并贴合。
需要说明的是，图1及图2所示实施方式的镜片贴膜设备100中，第一治具10与第二治具20 相对设置，因此，步骤150中所说的控制第一治具10与第二治具20相对移动，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合即是指：控制第一治具10与第二治具20相向移动，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合。本申请的其它一些实施方式中，当镜片贴膜设备100中的第一治具10与第二治具20并列设置时，步骤150中所说的控制第一治具10与第二治具20相对移动，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合即是指：翻转第一治具10或第二治具20，以使第二治具20与第一治具10相对设置；再控制第一治具10与第二治具20相向移动，以使镜片300的中间位置至边缘位置逐渐与膜片200贴合。
本申请实施方式中，通过将平面的膜片200从中间位置至边缘位置逐渐与镜片300接触并贴合，能够保证平面的膜片200从中间位置至边缘位置的变形能够均匀发生，从而避免平面的膜片200贴合与镜片300上以后，膜片200的光学性能、机械性能等发生变化而影响最终贴合完成得到的光学元件的光学性能、机械性能。例如，本申请一些实施方式中，膜片200为反射偏振膜、四分之一波片、二分之一波片等具有光轴的光学膜，通过本申请实施方式的膜片贴合方法，能够使得膜片200贴合后的膜片200的中心位置与边缘位置的光轴偏移小于或等于±5°，膜片200的光学性能中心与边缘的差异小于或等于±10％。并且，本申请的膜片200贴合方法操作简单，不需要先将平面的膜片200经过加温、保压、拉伸、软化等工艺，热成一张具有理想形貌的曲面膜片200后，再贴合至镜片300上，从而能够在简化贴合方法的同时，避免因为加温、保压、拉伸、软化等工艺而影响贴合后的膜片200的光学性能或机械性能。
本申请的一些实施方式中，在步骤150中的“镜片的中间位置至边缘位置逐渐与膜片贴合”之前还包括：
步骤141：通过第二治具20对膜片200进行加热。
本申请实施方式中，对膜片200进行加热，能够软化膜片200，从而使得膜片200能够更加好的贴合于膜片承载区21。并且，在膜片200与镜片300贴合的过程中，由于膜片200加热后能够更容易的产生变形，从而使得膜片200能够平整的贴合于镜片300的表面，避免膜片200贴合于镜片300的贴膜面时出现褶皱等问题。并且，本申请实施方式中，通过第二治具20对膜片200的各个位置进行均匀的加热，能够保证膜片200的各个位置均能够具有同等的变形能力，避免膜片200的各个位置拉伸不均而产生褶皱或者光轴方向的改变，从而保证最终膜片贴合完成后得到的光学元件的品质。且通过第二治具20为膜片200进行加热，由于第二治具20具有一定的保温作用，能够在整个贴合过程中对膜片200进行加热，能够保证在膜片200与镜片300的贴合过程中，膜片200能够始终处于加热状态，从而实现更好的贴合效果。
本申请实施方式中，镜片贴膜设备100包括膜片加热器600，膜片加热器600固定于第二治具20背离膜片200的一侧，膜片加热器600工作时对第二治具20进行加热，从而使得膜片加热器600产生的热量传输至第二治具20，再通过第二治具20为膜片200进行加热。本实施方式中，由于第二治具20具有一定的保温效果，因而在膜片加热器600停止工作后，第二治具20仍能够持续的为膜片200进行加热，从而减少能源的消耗。本申请一些实施方式中，第二治具20能够产生30℃-150℃的加热温度，以保证第二治具20能够对膜片300进行充分的加热，以保证膜片200能够与镜片300有良好的贴合效果。
本申请的一些实施方式中，步骤150中的“镜片的中间位置至边缘位置逐渐与膜片贴合”之前还包括：
步骤142：通过第一治具10对镜片300进行加热。
本申请实施方式中，对镜片300进行加热，从而在膜片200与镜片300贴合的过程中能够减 小膜片200与镜片300之间的温度差，保证在完成膜片200与镜片300的贴合并冷却后，膜片200与镜片300之间的应力能够较小，进而保证膜片200与镜片300之间贴合的稳定性。本申请一些实施方式中，镜片300与膜片200的温度差小于30°，能够有效的保证膜片200与镜片300之间贴合的稳定性。本申请实施方式中，通过第一治具10对镜片300的各个位置的均匀加热，从而保证膜片200与镜片300的贴合过程中，保证镜片300的各个位置的温度均衡。一些实施方式中，镜片300与膜片200的温度差小于10°，能够更有效的保证膜片200与镜片300之间贴合的稳定性。
本申请一些实施方式中，镜片贴膜设备100包括镜片加热器700，镜片加热器700固定于第一治具10背离镜片300的一侧，镜片加热器700工作时对第一治具10进行加热，从而使得镜片加热器700产生的热量传输至第一治具10，再通过第一治具10为镜片300进行加热。本实施方式中，第一治具10能够具有一定的保温效果，因而在镜片加热器700停止工作后，第一治具10仍能够持续的为镜片300进行加热，从而减少能源的消耗。本申请一些实施方式中，镜片加热器700能够产生30℃-150℃的加热温度，以保证能够对第一治具10进行充分的加热，以减少膜片200与镜片300贴合时的温度差。
本申请实施方式中，步骤142及步骤143可以在步骤120之后、步骤150之前的任意时间进行，在此不进行具体限制。图7所示实施方式中，步骤142及步骤143在步骤140之后、步骤150之前进行。
本申请一些实施方式中，将步骤150中将膜片200与镜片300贴合后，还可以对贴合膜片200后的镜片300进行保温保压一定时间，从而保证膜片200与镜片300之间贴合的牢固性。具体的，本申请一些实施方式中，将膜片200与镜片300贴合后，将贴合膜片200后的镜片300在1-2000kgf的压力、30℃-150℃的温度下保温保压5s以上。
本申请一些实施方式中，膜片200上层叠有胶层及离型膜。其中，胶层能够用于将膜片200粘贴在镜片300表面。本申请实施方式中，胶层可以为光学胶(optically clear adhesive，OCA)、压敏胶(pressure sensitive adhesive，PSA)等各种类型的透明胶材。本申请的一些实施方式中，胶层的厚度为5μm-50μm，从而能够保证通过胶层能够将膜片200稳定的与镜片300进行贴合的同时，避免胶层厚度过厚而影响镜片300贴合膜片200后得到的光学元件的厚度及光学性能。
一些实施方式中，贴合膜片200与镜片300的胶层与固定膜片200与载带400的胶材为同的材料，从而保证后续将载带400与膜片200剥离时，不会影响膜片200与镜片300的贴合的牢固程度。
离型膜又称剥离膜、隔离膜、分离膜或阻胶膜，离型膜能够保证贴覆膜层具有一定离型力，用于保护胶层。本实施方式中，膜片200贴合至镜片300上，需要撕除离型膜层，以通过胶层将膜片200贴合至镜片300上。因此，这些实施方式中，在步骤150之前，还需要包括步骤：去除膜片200表面的离型膜。
本实施方式中，膜片200固定于第一治具10上时，离型膜位于膜片200背离第一治具10的表面。去除离型膜后，膜片200表面的胶层与镜片300相对，镜片300靠近膜片200时，膜片200能够贴附于镜片300上。
本申请一些实施方式中，在步骤150之前，还包括：
步骤111：对镜片300的表面进行表面活化处理。
本申请实施方式中，对镜片300的表面活化处理能够在镜片300的表面生成极性基团(如 羟基氧化膜)或对镜片300表面粗化，从而使得膜片200能够更加牢固的粘附于镜片300的表面。一些实施方式中，对镜片300的表面进行表面活化处理时，对镜片300的表面进行清洁，以能够保证贴膜完成后镜片300与膜片200之间不会有杂质存在，保证贴膜质量。
本申请一些实施方式中，通过等离子体处理的方式对镜片300的表面进行活化处理，同时可以去除镜片300表面的杂质。可以理解的是，本申请的其它一些实施方式中，也可以通过其它的清洁方式对镜片300的贴膜面进行清洁处理。
本申请实施方式中，步骤111可以在步骤150之前的任意时刻执行。图7所示实施方式中，步骤111在步骤110之前执行，即先对镜片300的贴膜面进行表面活化处理后，再将镜片300固定至第一治具10上。可以理解的是，本申请的其它一些实施方式中，步骤111也可以在步骤110之后及步骤150之间的任意时刻执行，再此不进行具体限制。
本申请的一些实施方式中，在步骤140以后及步骤150之前还包括：
步骤141：获取镜片300及膜片200的全口径的边界信息，以使镜片300与膜片200对位。
具体的，本申请实施方式中，镜片300的各个位置与膜片200的各个位置进行对位可以通过第三对位相机实现。一些实施方式中，对镜片300与膜片200进行对位时，可以移动第三对位相机至相对设置的镜片300及膜片200之间，通过第三对位相机获取镜片300的全口径的边界信息，以确定镜片300的中心位置。并获取膜片200的全口径的边界信息，以确定膜片200的中心位置。之后，相对移动第一治具10及第二治具20，以使镜片300的中心位置与膜片200的中心位置相对，从而实现镜片300与膜片200的对位。本实施方式中，在膜片200与镜片300贴合之前，将膜片200与镜片300进行对位，能够进一步的提高膜片200贴合于镜片300上时的精度。
需要说明的是，在第三对位相机完成对镜片300与膜片200对位之后，可以移动第三对位相机以离开镜片300与膜片200之间，从而避免第三对位相机阻挡镜片300及膜片200贴合时的相对移动。
可以理解的是，本申请的其它一些实施方式中，也可以没有步骤141，通过第一治具10与第二治具20的结构精度配合，以实现膜片200与镜片300的对位。
本申请的一些实施方式中，在完成步骤150之后，还可以包括：
步骤151：解除第一治具10对镜片300的固定，并解除第二治具20对膜片200的固定。
具体的，
对于图1所示实施方式的镜片贴膜装置100来说，解除第二治具20对膜片200的固定包括：停止抽真空装置，使得第二治具20不会膜片200产生真空吸附力，从而解除第二治具20对膜片200的固定。对于图2所示实施方式的镜片贴膜装置100来说，解除第二治具20对膜片200的固定包括：停止抽真空装置，使得第二治具20不会膜片200产生真空吸附力；并松开夹持件500对载带400的夹持，从而解除第二治具20对膜片200的固定。
步骤152：将完成贴合膜片200的镜片300进行脱泡处理。
具体的，本申请一些实施方式中，膜片贴合治具100还包括脱泡治具。将从第一治具10及第二治具20中取出的贴合有膜片200的镜片300放置于脱泡治具中，并对贴合有膜片200的镜片300进行保压保温处理，以便于排出膜片200与镜片300之间的气泡，保证光学元件的光学质量。本实施方式中，对膜片200进行保压保温处理时的压力为0.1-1MPa，温度为40-80℃，保温保压时间为5min-1h，以保证能够排出膜片200与镜片300之间的气泡的同时，控制保温保压 的温度、压力及时间，避免脱泡过程对光学元件的光学性能的影响。
具体的，本申请一些实施方式中，膜片贴合治具100还包括机械手臂或者皮带轮等传送结构。通过机械手臂或者皮带轮等传输机构将完成贴合有膜片200的镜片300从第一治具10及第二治具20中取出，并放置于脱泡治具内进行脱泡处理。
对于图2所示的镜片贴膜设备100来说，在对镜片进行脱泡处理后还包括：将载带400与膜片200进行剥离。一些实施方式中，对将载带400与膜片200进行剥离包括：对膜片200与载带400贴合的位置进行紫外光(Ultraviolet Rays，UV)照射，从而使得膜片200与载带400贴合的胶层固化失活，从而使得膜片200与载带400剥离。需要说明的是，膜片200与镜片300之间的胶层为紫外光不敏感胶层，避免通过紫外光将载带400与膜片200进行剥离的过程时，紫外光照射影响膜片200与镜片300之间的贴合的牢固程度。请参阅图9，图9所示为本申请一种实施方式的镜片贴膜设备100的工作模块示意图。本申请一些实施方式中，镜片贴膜设备100还包括存储器101、处理器102及存储在存储器101上并可在处理器102上运行的镜片贴膜程序。镜片贴膜程序被处理器102执行以控制镜片贴合设备100执行上述的镜片贴膜方法。
以上为本申请的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本申请原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也视为本申请的保护范围。

Claims (15)

  1. 一种镜片的膜片贴合方法，其特征在于，所述膜片贴合方法包括：
    将所述镜片固定于第一治具上；
    将所述膜片固定于第二治具上，所述第二治具为可变形的柔性治具；
    获取所述镜片的全口径的边界信息，以使所述镜片与所述第一治具对位；
    获取所述膜片的全口径的边界信息，以使所述膜片与所述第二治具对位；
    控制所述第一治具与所述第二治具相对移动，以使所述镜片的中间位置至边缘位置逐渐与所述膜片贴合。
  2. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述镜片的中间位置至边缘位置逐渐与所述膜片贴合之前还包括步骤：
    通过所述第二治具对所述膜片进行加热。
  3. 如权利要求2所述的镜片的膜片贴合方法，其特征在于，所述镜片的中间位置至边缘位置逐渐与所述膜片贴合之前还包括步骤：
    通过所述第一治具对所述镜片进行加热，以使所述镜片与所述膜片贴合之前的温差小于30°。
  4. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，通过第一对位相机获取所述镜片的全口径的边界信息，其中，所述第一对位相机的拍照范围覆盖所述镜片的全口径；
    通过第二对位相机获取所述镜片的全口径的边界信息，其中，所述第二对位相机的拍照范围覆盖所述膜片的全口径。
  5. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述镜片的膜片贴合方法还包括：
    解除所述第一治具对所述镜片的固定，并解除所述第二治具对所述膜片的固定；
    将完成贴合所述膜片的所述镜片进行脱泡处理。
  6. 如权利要求5所述的镜片的膜片贴合方法，其特征在于，所述脱泡处理包括：
    将完成贴合所述膜片的所述镜片放置于脱泡治具内，对完成贴合所述膜片的所述镜片进行保压保温处理，所述保压保温处理时的压力为0.1-1MPa，温度为40-80℃，保温保压时间为5min-1h。
  7. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述膜片的尺寸与所述镜片的有效口径一致，或者，所述膜片的尺寸小于所述镜片的有效口径。
  8. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述第二治具包括膜片承载区，所述膜片固定于所述膜片承载区；所述镜片贴合所述膜片的表面为贴膜面；
    所述镜片的所述贴膜面为凹面时，所述第二治具的所述膜片承载区为凸面，且所述膜片承载区的曲率半径小于所述贴膜面的曲率半径；所述镜片的所述贴膜面为凸面时，所述第二治具的所述膜片承载区为平面或者凹面，且所述膜片承载区的曲率半径大于所述贴膜面的曲率半径。
  9. 如权利要求8所述的镜片的膜片贴合方法，其特征在于，所述膜片承载区阵列设置有真空孔，所述膜片通过所述真空孔的真空吸附力固定于所述膜片承载区。
  10. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述镜片的有效口径范围为 1-60mm；所述镜片的贴膜面为凸面时，所述贴膜面的曲率半径与所述贴膜面的贴合口径的比值大于1.2；所述镜片的贴膜面为凹面时，所述贴膜面的曲率半径与所述贴膜面的贴合口径的比值大于1.5。
  11. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述镜片贴合所述膜片的表面为贴膜面，所述贴膜面的面型为球面、非球面或具有一个反曲的自由曲面。
  12. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，所述膜片固定于所述第二治具上包括：
    将所述膜片固定于载带上；
    通过夹持件夹持于所述膜片两侧的所述载带，并使所述膜片与所述第二治具相对，所述第二治具在所述膜片所在平面的正投影覆盖所述膜片；
    控制所述载带与所述第二治具相对移动至所述载带上的所述膜片贴合于所述第二治具。
  13. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，对控制所述第一治具与所述第二治具相对移动之前还包括：
    获取所述镜片及所述膜片的全口径的边界信息，以使所述镜片与所述膜片对位。
  14. 如权利要求1所述的镜片的膜片贴合方法，其特征在于，控制所述第一治具与所述第二治具相对移动之前还包括：
    对所述镜片的表面进行表面活化处理。
  15. 一种镜片贴膜设备，其特征在于，所述镜片贴膜设备包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的镜片贴膜程序；所述镜片贴膜程序被所述处理器执行以实现如权利要求1-14中任一项所述的镜片贴膜方法。
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