WO2022227224A1 - 一种双光膜层变色镜片及其制备方法 - Google Patents

一种双光膜层变色镜片及其制备方法 Download PDF

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Publication number
WO2022227224A1
WO2022227224A1 PCT/CN2021/097823 CN2021097823W WO2022227224A1 WO 2022227224 A1 WO2022227224 A1 WO 2022227224A1 CN 2021097823 W CN2021097823 W CN 2021097823W WO 2022227224 A1 WO2022227224 A1 WO 2022227224A1
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layer
photochromic
lens
bifocal
substrate
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PCT/CN2021/097823
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English (en)
French (fr)
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李军
商建国
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江苏全真光学科技股份有限公司
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Priority to EP21938147.2A priority Critical patent/EP4332666A1/en
Priority to US18/288,917 priority patent/US20240201519A1/en
Publication of WO2022227224A1 publication Critical patent/WO2022227224A1/zh

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    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/10—Filters, e.g. for facilitating adaptation of the eyes to the dark; Sunglasses
    • G02C7/102—Photochromic filters
    • 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
    • B29D11/00028—Bifocal lenses; Multifocal 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
    • B29D11/00634—Production of filters
    • B29D11/00653—Production of filters photochromic
    • 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
    • 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
    • B29D11/00865—Applying coatings; tinting; colouring
    • B29D11/00884—Spin coating
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
    • C09D163/10—Epoxy resins modified by unsaturated compounds
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D171/00—Coating compositions based on polyethers obtained by reactions forming an ether link in the main chain; Coating compositions based on derivatives of such polymers
    • C09D171/02—Polyalkylene oxides
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
    • C09D7/40—Additives
    • C09D7/60—Additives non-macromolecular
    • C09D7/63—Additives non-macromolecular organic
    • G—PHYSICS
    • G02—OPTICS
    • G02C—SPECTACLES; SUNGLASSES OR GOGGLES INSOFAR AS THEY HAVE THE SAME FEATURES AS SPECTACLES; CONTACT LENSES
    • G02C7/00—Optical parts
    • G02C7/02—Lenses; Lens systems ; Methods of designing lenses
    • G02C7/06—Lenses; Lens systems ; Methods of designing lenses bifocal; multifocal ; progressive

Definitions

  • the invention relates to the technical field of lens manufacturing technology, in particular to a bi-optical film-layer color-changing lens and a preparation method thereof.
  • Bifocal lens is a kind of lens that can effectively increase the ciliary muscle strength of the eye in myopia patients, expand the adjustment reserve, improve the visual acuity of the refractive error eye, and reduce its diopter. Especially for teenagers. Its structure includes a main piece and a sub-piece, the main piece is a far-use optical area, and the sub-piece is a near-use optical area.
  • Photochromic lenses are originally colorless and transparent lenses. Under strong light conditions, they can become tinted lenses with very low transmittance, so as to reduce harmful light and protect the eyes from damage.
  • the conventional practice of dual-light color-changing films is that they are cast in one piece. The discoloration at the low light is darker and the fading is slower, and the refractive index is only 1.56 and 1.60, which affects the wearing effect.
  • the current color-changing bifocal lenses are soaked or spin-coated to make the color-changing liquid adhere to the lens.
  • this method is used for bifocal lenses, the coating thickness of the sub-pieces is likely to be uneven, and the sub-pieces cannot be guaranteed.
  • the luminosity of the film is accurate, and it is easy to have uneven discoloration, film peeling and other phenomena. Other methods such as film can not achieve the ideal discoloration performance.
  • the inventors have developed a bifocal film-layer photochromic lens and a preparation method thereof based on years of rich experience and professional knowledge of such materials, combined with theoretical analysis, and research and innovation.
  • the two technologies of color change and bifocal are perfectly combined, so that the photochromic layer can be evenly attached to the surface of the lens substrate, the color change is uniform, the performance is excellent, and the surface luminosity of the bifocal lens substrate is not affected. .
  • the purpose of the present invention is to provide a preparation method of a bifocal film layer photochromic lens.
  • the lens base is a bifocal lens, and two technologies of color change and bifocal are combined, so that the photochromic layer can be evenly attached to the surface of the lens base, and the color change Uniform, excellent performance, and ensures that the surface luminosity of the bifocal lens base is not affected.
  • the invention provides a bi-optic film-layer color-changing lens.
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate, a treatment layer and a photochromic layer; the photochromic layer is cured on the surface of the treatment layer by ultraviolet light irradiation;
  • the base is a first-line bifocal lens or a flat-top bifocal lens.
  • the substrate includes a main lens piece and a lens sub-piece, the main lens piece is a far-viewing structure, and the lens sub-piece is a near-viewing part.
  • optically transparent polymer material is any one of polycarbonates, polymethyl methacrylates or polymer alloys.
  • the material of the treatment layer includes the following components: 50-80 parts of bisphenol A epoxy acrylic resin, 5-8 parts of dioctyl adipate, 2-5 parts of vinyl trimethoxysilane parts and 1 to 3 parts of tetrabutylammonium chloride.
  • the bisphenol A epoxy acrylic resin is mainly the main body of light curing. After photocuring, a cured film is formed on the surface of the substrate, which can adhere to the acrylates in the discoloration layer; The resin cured film has insufficient flexibility and high brittleness.
  • the added dioctyl adipate is a flexible modification component, so that the cured film has a certain ductility.
  • Vinyltrimethoxysilane as a silane coupling agent, can be The cured film has better adhesion to the substrate.
  • Tetrabutylammonium chloride is mainly used as a quaternary ammonium salt catalyst, and other catalysts of the same nature can also be used as equivalent replacements; the present invention sets the above-mentioned treatment layer between the discoloration layer and the lens substrate.
  • the purpose is to improve the adhesion between the color-changing layer and the substrate, so that the color-changing layer will not have problems such as hanging during the curing process, and improve the peeling resistance of the color-changing layer and the uniformity of the color-changing layer.
  • the photochromic material includes the following components: bisphenol A dimethacrylate 30%-70%; polyethylene glycol diacrylate 10%-60%; multifunctional acrylate Monomer 10% to 30%; the rest are photoinitiators, totaling 100%.
  • optically transparent polymer material is any one of polycarbonates, polymethyl methacrylates or polymer alloys.
  • the bisphenol A dimethacrylate is an ethoxylated bisphenol A dimethacrylate containing 2-20 repeating units of ethoxy, and 2-20 repeating units containing propoxy Propoxylated bisphenol A dimethacrylate, alkoxylated bisphenol A dimethacrylate containing 2 to 20 repeating units of epoxy and propoxy groups, glycerolated bisphenol A dimethacrylate At least one of methacrylate and bisphenol A glycerolated (1-propanetriol/phenol) dimethacrylate.
  • the multifunctional acrylate monomers are dipentaerythritol hexaacrylate, dipentaerythritol hydroxy pentaacrylate, pentaerythritol tetraacrylate, pentaerythritol triacrylate, trimethylolpropane trimethacrylate, propoxylated glycerol At least one of triacrylate and trimethylpropane ethoxy triacrylate.
  • polyethylene glycol diacrylate is polyethylene glycol diacrylate containing 2 to 20 repeating units of ethoxy group or polyethylene glycol diacrylate containing 2 to 20 repeating units of propoxy group ester.
  • the substrate is a first-line bifocal lens or a flat-top bifocal lens.
  • the lens sub-sheets are base-inward prism structures.
  • the outer mold is a bi-optic glass mold.
  • the preparation method of the bifocal film-layer color-changing lens specifically includes the following operation steps:
  • step S2 the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and is fixed with adhesive tape;
  • step S3 inject photochromic material into the gap of step S2, fill the gap, and seal;
  • the lenses of bifocal photochromic glasses contain the main lens and the sub-pieces of the lens, when the spin coating method is used, due to the height difference between the main and sub-pieces of the lens, the bifocal photochromic film layer is not uniform.
  • the discoloration When changing, the discoloration is uneven; and if the method of integral casting is used, photochromic materials with high discoloration sensitivity and large discoloration range cannot be used, resulting in darker discoloration at low light and slower fading, and the refractive index is only 1.56 and 1.60 Discoloration affects wearing, and the method provided by the present invention can ensure the uniformity of the photochromic film by injecting the photochromic material into the gap and then curing, and the color changes quickly and uniformly at the low beam, and the width of the gap can be adjusted by adjusting the gap. , Control the thickness of the photochromic film and improve the wearing effect of the bi-photochromic eyes.
  • the preparation method provided by the present invention specifically comprises the following operation steps:
  • the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and the gap is the thickness of the photochromic layer.
  • the gap is preferably 4mm, fixed with tape;
  • step S3 inject photochromic material into the gap of step S2, fill the gap, and seal;
  • step S3 an injection hole is punched in the adhesive tape, a syringe is used to inject the photochromic material into the gap through the injection hole, and the hole is sealed with adhesive tape.
  • a vent hole is punched on the tape, and the vent hole is adjacent to the injection hole.
  • the vent hole overflows with the photochromic material, it can be determined that the gap has been filled with the photochromic material. Due to the small fluidity of the photochromic material, it is not conducive to the entry of the photochromic material into the void. The existence of the vent hole can maintain the air pressure balance between the void and the outside world, which is convenient for the injection of the photochromic material, and can pass the photochromic material.
  • the overflow judges that the photochromic material fills the gap, ensures that the photochromic material can fill the gap, and eliminates the bubbles inside the photochromic material and the bubbles introduced during the injection process through the extrusion of the surface tension of the photochromic material. Improve the uniformity of the photochromic film and the wearing effect of the lens.
  • the preparation method provided by the present invention specifically comprises the following operation steps:
  • the substrate obtained in step S1 is placed in the outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, in the present invention, the gap is preferably 5mm, fixed with adhesive tape;
  • step S3 Inject the photochromic material into the void in step S2.
  • the photochromic material is filled to 1/2 to 2/3 of the void volume, the void is adjusted to 4 mm, and the void is the thickness of the photochromic layer.
  • the photochromic material is filled to 1/2 to 2/3 of the void volume, the void is adjusted to 4 mm, and the void is the thickness of the photochromic layer.
  • the photochromic material Due to the high viscosity and low fluidity of the photochromic material, it is easy to introduce bubbles or uneven contact with the contact surface during the injection process, resulting in the phenomenon that the photochromic film contains fine bubbles or uneven curing.
  • the photochromic material is filled to 1/2 to 2/3 of the void volume, the void is reduced, causing a certain pressure to the photochromic material in the void, so that the arc surface of the lens is completely immersed in the photochromic In the material, through the wettability of the treatment layer, there is no gap in the contact between the photochromic material and the lens, and the remaining air bubbles in the photochromic material are squeezed out by pressure.
  • step S1 a treatment layer is evenly spin-coated on the surface of the substrate, and the substrate coated with the treatment layer is irradiated with an ultraviolet curing light source for 1 min. After 1 min of irradiation, the material of the treatment layer is in a semi-dry state, which improves the adhesion between the treatment layer and the discoloration layer while ensuring the adhesion between the treatment layer and the substrate.
  • the present invention has the following beneficial effects:
  • the invention provides a method for preparing a bifocal film-layer color-changing lens.
  • the lens base adopts a bifocal lens, and the two technologies of color change and bifocal are combined to overcome the defect of the non-uniformity of the bifocal film layer caused by the spin coating method. , so that the photochromic layer can be evenly attached to the surface of the lens substrate, the color change is uniform, the performance is excellent, and the surface shape and luminosity of the bifocal lens substrate can be guaranteed not to be affected.
  • Fig. 1 is the flow chart of preparation method of the present invention
  • Embodiment 3 is a schematic structural diagram of a substrate in Embodiment 1 of the present invention.
  • FIG. 4 is a schematic structural diagram of the substrates of Embodiments 2 to 5 of the present invention.
  • FIG. 5 is the color change time transmittance of Example 1 and Comparative Example.
  • the material of the substrate is an optical transparent polymer material with a refractive index of 1.50-1.74; the optical transparent polymer material is any one of polycarbonate, polymethyl methacrylate or polymer alloy, all of which are commercially available.
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured by ultraviolet light on The surface of the treatment layer 2, wherein, calculated according to the mass fraction, the photochromic layer 3 includes the following components: 30% of propoxylated bisphenol A dimethacrylate containing 2 to 20 repeating units of propoxy groups; 60% of polyethylene glycol diacrylate containing 2 to 20 repeating units of propoxy; 10% of pentaerythritol tetraacrylate; the rest are photoinitiators, totaling 100%, calculated in parts by weight, the material of the treatment layer It includes the following components: 50 parts of bisphenol A epoxy acrylic resin, 5 parts of dioctyl adipate, 2 parts of vinyltrimethoxysilane and 1 part of tetrabutylammonium chloride, as shown in Figure 3, substrate 1 It is a
  • a preparation method of a bi-optic film-layer color-changing lens specifically comprising the following operation steps:
  • step S2 the substrate 1 obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate 1, and a gap is left between the outer mold and the substrate 1, and is fixed with adhesive tape;
  • step S3 inject photochromic material into the gap of step S2, fill the gap, and seal;
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured by ultraviolet light on The surface of the treatment layer 2, wherein, calculated according to the mass fraction, the photochromic layer 3 includes the following components: 40% of ethoxylated bisphenol A dimethacrylate containing 2-20 repeating units of ethoxy groups; Polyethylene glycol diacrylate 45%; dipentaerythritol hydroxy pentaacrylate 15%; the rest are photoinitiators, totaling 100%, calculated in parts by weight, the material of the treatment layer includes the following components: bisphenol A epoxy acrylic acid 60 parts of resin, 6 parts of dioctyl adipate, 4 parts of vinyltrimethoxysilane and 2 parts of tetrabutylammonium chloride, as shown in Figure 4, the base 1 is a flat top bifocal lens
  • a preparation method of a bi-optic film-layer color-changing lens specifically includes the following operation steps:
  • the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and the gap is the thickness of the photochromic layer.
  • the gap is preferably 4mm, fixed with tape;
  • the base 1 includes a main lens piece 11 and a lens sub-piece 12.
  • the lens main piece 11 is a far-viewing structure
  • the lens sub-piece 12 is a near-view portion
  • the lens sub-piece 11 is a base-inward prism structure
  • the outer mold is a bifocal glass mold.
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured by ultraviolet light on Treating the surface of the layer 2, wherein, calculated according to the mass fraction, the photochromic layer 3 includes the following components: alkoxylated bisphenol A dimethacrylic acid containing 2 to 20 repeating units of epoxy groups and propoxy groups 55% of ester; 35% of polyethylene glycol diacrylate containing 2 to 20 repeating units of ethoxy; 10% of dipentaerythritol hydroxypentaacrylate; the rest are photoinitiators, totaling 100%; by weight Calculated, the material of the treatment layer includes the following components: 75 parts of bisphenol A epoxy acrylic resin, 7 parts of dioctyl adipate, 4 parts of vinyltrimethoxysilane and 2 parts of tetrabutylammonium chloride,
  • a preparation method of a bi-optic film-layer color-changing lens specifically includes the following operation steps:
  • the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and the gap is the thickness of the photochromic layer.
  • the gap is preferably 5mm, fixed with tape;
  • step S3 Inject the photochromic material into the void in step S2.
  • the photochromic material is filled to 1/2 to 2/3 of the void volume, adjust the void to 4 mm, and continue to inject the photochromic material until the void is photoinduced
  • the discoloration material is filled and sealed;
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured by ultraviolet light on Treating the surface of the layer 2, wherein, according to the mass fraction calculation, the photochromic layer 3 includes the following components: glycerolated bisphenol A dimethacrylate and bisphenol A glycerolated (1-glycerol/phenol) dimethyl Acrylate 50%; polyethylene glycol diacrylate containing 2 to 20 repeating units of propoxy group 20%; pentaerythritol triacrylate 30%; the rest are photoinitiators, totaling 100%, calculated in parts by weight , the material of the treatment layer includes the following components: 65 parts of bisphenol A epoxy acrylic resin, 5 parts of dioctyl adipate, 5 parts of vinyltrimethoxysilane and 1 part of tetrabutylammonium chloride, as
  • a preparation method of a bi-optic film-layer color-changing lens specifically includes the following operation steps:
  • the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and the gap is the thickness of the photochromic layer.
  • the gap is preferably 5mm, fixed with tape;
  • the base 1 includes a main lens piece 11 and a lens sub-piece 12.
  • the lens main piece 11 is a far-viewing structure
  • the lens sub-piece 12 is a near-view portion
  • the lens sub-piece 11 is a base-inward prism structure
  • the outer mold is a bifocal glass mold.
  • the bi-optic film-layer color-changing lens includes from inside to outside: a substrate 1, a treatment layer 2 and a photochromic layer 3; the photochromic layer 3 is cured by ultraviolet light on The surface of the treatment layer 2, wherein, calculated according to the mass fraction, the photochromic layer 3 includes the following components: 45% of ethoxylated bisphenol A dimethacrylate containing 2-20 repeating units of ethoxy groups; 40% of polyethylene glycol diacrylate containing 2 to 20 repeating units of ethoxy group; 15% of dipentaerythritol hexaacrylate; the rest are photoinitiators, totaling 100%.
  • the material includes the following components: 55 parts of bisphenol A epoxy acrylic resin, 5 parts of dioctyl adipate, 4 parts of vinyltrimethoxysilane and 2 parts of tetrabutylammonium chloride.
  • 1 is a flat-top bifocal lens, including a main lens piece 11 and a lens sub-piece 12.
  • the main lens piece 11 is a far-viewing structure
  • the lens sub-piece 12 is a near-viewing part.
  • a preparation method of a bi-optic film-layer color-changing lens specifically includes the following operation steps:
  • the substrate obtained in step S1 is placed in an outer mold that is compatible with the shape and structure of the substrate, and a gap is left between the outer mold and the substrate, and the gap is the thickness of the photochromic layer.
  • the gap is preferably 5mm, fixed with tape;
  • the base 1 includes a main lens piece 11 and a lens sub-piece 12.
  • the lens main piece 11 is a far-viewing structure
  • the lens sub-piece 12 is a near-view portion
  • the lens sub-piece 11 is a base-inward prism structure
  • the outer mold is a bifocal glass mold.
  • a bi-optic film-layer color-changing lens comprising from the inside to the outside: a substrate and a photochromic layer; wherein, calculated according to the mass fraction, the photochromic layer includes the following components: 2 Ethoxylated bisphenol A dimethacrylate with ⁇ 20 repeating units 56%; polyethylene glycol diacrylate is polyethylene glycol diacrylate containing 2 to 20 repeating units of ethoxy group 32 %; dipentaerythritol hydroxypentaacrylate 12%; the rest are photoinitiators, totaling 100%, and the base is a flat-top bifocal lens.
  • the preparation method of the flat-top bifocal lens the photochromic layer is evenly coated on the substrate by the spin coating method, and then cured.
  • Lens optical discoloration spectral analysis (fading transmittance detection) was performed on Example 1 and Comparative Example, the results are shown in Table 1 and Figure 5, testing instrument: BYK transmission haze meter, environmental conditions: temperature 23°C.
  • Example 1 Spectral analysis of lens optical discoloration (fading transmittance detection) was carried out on the center of Example 1 and Comparative Example and at two points 25 mm away from the center, the results are shown in Table 2, testing instrument: BYK transmission haze meter, environmental conditions: temperature 20°C.
  • the discoloration of the bifocal lens obtained by the preparation method of the bifocal film lens provided by the present invention is more uniform, and there is basically no difference in the transmittance of the lens between the center point of the lens and the lens 25mm away from the center, which ensures the light

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Abstract

本发明涉及镜片制作工艺技术领域，具体涉及一种双光膜层变色镜片的制备方法。其技术要点如下，双光膜层变色镜片从内至外包括：基底、处理层和光致变色层；光致变色层通过紫外光照射固化于处理层表面。本发明提供的一种双光膜层变色镜片的制备方法，镜片基底采用双光镜片，将变色和双光两项技术结合，克服了旋涂法带来的双光膜层不均匀性的缺陷，使光致变色层可以均匀的附着在镜片基底表面，变色均匀，性能优异，且能确保双光镜片基底的面形光度不受影响。

Description

一种双光膜层变色镜片及其制备方法 技术领域
本发明涉及镜片制作工艺技术领域，具体涉及一种双光膜层变色镜片及其制备方法。
背景技术
双光镜片是一种可以有效使近视患者增加眼睛的睫状肌肌力，扩大调节储备，提高屈光不正眼睛的视力，降低其屈光度数的镜片。特别适用于青少年。其结构包括了主片和子片，主片为远用视光区，子片为近用视光区。变色镜片，是一种原本无色透明的镜片，在强光环境下，可以变成透过率很低的有色镜片，从而达到减少有害光线，保护眼睛不受伤害的效果。双光变色片的常规做法都是一体浇注成型的，近光处变色较深褪色较慢，且折射率只有1.56和1.60变色，影响佩戴效果。
现有技术中，目前变色双光镜片是通过浸泡或者旋涂的方式来使变色液附着在镜片上，这种方法用于双光镜片时，容易造成子片涂敷厚度不均匀，不能保证子片光度准确，且容易有变色不匀，膜层脱落等现象。其他贴膜等方式又达不到理想的变色性能。
有鉴于上述现有技术中存在的缺陷，本发明人基于从事此类材料多年丰富经验及专业知识，配合理论分析，加以研究创新，开发一种双光膜层变色镜片及其制备方法，镜片基底为双光镜片，采用变色和双光两项技术完美结合，使光致变色层可以均匀的附着在镜片基底表 面，变色均匀，性能优秀，且能确保双光镜片基底的面形光度不受影响。
发明内容
本发明的目的是提供一种双光膜层变色镜片的制备方法，镜片基底为双光镜片，采用变色和双光两项技术结合，使光致变色层可以均匀的附着在镜片基底表面，变色均匀，性能优异，且能确保双光镜片基底的面形光度不受影响。
本发明的上述技术目的是通过以下技术方案得以实现的：
本发明提供的一种双光膜层变色镜片，双光膜层变色镜片从内至外包括：基底、处理层和光致变色层；光致变色层通过紫外光照射固化于所述处理层表面；基底为一线双光镜片或平顶双光镜片。
进一步的，基底包括镜片主片和镜片子片，镜片主片为看远结构，镜片子片是看近部分。
进一步的，光学用透明高分子材料是聚碳酸酯类、聚甲基丙烯酸甲酯类或聚合物合金中的任意一种。
进一步的，按照重量份数计算，处理层的材料包括如下组分：双酚A环氧丙烯酸树脂50～80份，己二酸二辛酯5～8份，乙烯基三甲氧基硅烷2～5份和四丁基氯化铵1～3份。
本发明中，双酚A环氧丙烯酸树脂主要为光固化主体，经光固化后，在基底表面形成固化膜，可以与变色层中的丙烯酸酯类亲和黏附；由于单双酚A环氧丙烯酸树脂固化膜柔韧性不足，脆性大，加入的己二酸二辛酯，为柔顺改性组分，使固化膜有一定的延展韧性； 乙烯基三甲氧基硅烷，作为硅烷偶联剂，可以是固化膜与基底更好的黏附，四丁基氯化铵主要作为季铵盐类催化剂，同性质的其他催化剂也可作等效替换；本发明在变色层与镜片基底之间设置上述处理层的目的在于提高变色层与基底之间的粘结力，使变色层在固化过程中不会发生挂流等问题，提高变色层抗剥离性的同时，提高变色层的均匀性。
进一步的，按照质量分数计算，所述光致变色材料包括如下组分：双酚A二甲基丙烯酸酯30％～70％；聚乙二醇二丙烯酸酯10％～60％；多官能团丙烯酸酯单体10％～30％；其余为光引发剂，总计100％。
进一步的，光学用透明高分子材料是聚碳酸酯类、聚甲基丙烯酸甲酯类或聚合物合金中的任意一种。
进一步的，双酚A二甲基丙烯酸酯为包含有乙氧基的2～20个重复单元的乙氧基化双酚A二甲基丙烯酸酯、包含有丙氧基的2～20个重复单元的丙氧基化双酚A二甲基丙烯酸酯、包含有环氧基和丙氧基的2～20个重复单元的烷氧基化双酚A二甲基丙烯酸酯、甘油化双酚A二甲基丙烯酸酯和双酚A甘油化(1-丙三醇/苯酚)二甲基丙烯酸酯中的至少一种。
进一步，多官能团丙烯酸酯单体为二季戊四醇六丙烯酸酯、二季戊四醇羟基五丙烯酸酯、季戊四醇四丙烯酸酯、季戊四醇三丙烯酸酯、三羟甲基丙烷三甲基丙烯酸酯、丙氧基化丙三醇三丙烯酸酯和三甲基丙烷乙氧基三丙烯酸酯中的至少一种。
进一步，聚乙二醇二丙烯酸酯为包含有乙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯或包含有丙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯。
进一步的，基底为一线双光镜片或平顶双光镜片。
进一步的，镜片子片是基底向内棱镜结构。
进一步的，外模具为双光玻璃模具。
进一步的，本发明提供的双光膜层变色镜片的制备方法具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，用胶带固定；
S3、向步骤S2的空隙中注入光致变色材料，填满空隙，密封；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层；
S5、脱模得到双光膜层变色镜片。
由于双光变色眼镜的镜片含有镜片主片和镜片子片，当采用旋涂法时，由于镜片主片和镜片子片之间存在高度差，导致双光变色膜层不均匀，当遇到光线变化时，变色不均匀；而若采用一体浇注的方法，则无法采用变色敏感度高且变色范围大的光致变色材料，导致近光处变色较深褪色较慢，且折射率只有1.56和1.60变色，影响佩戴，而本发明提供的方法，通过将光致变色材料注入空隙中，再固化，能够保证光致变色膜的均匀性，近光处颜色变化快且均匀，且通过调整空隙的宽度，控制光致变色膜的厚度，提高双光变色眼睛的佩戴效果。
作为上述技术方案的优选，本发明提供的制备方法具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，该空隙即为光致变色层的厚度，本发明中，空隙优选为4mm，用胶带固定；
S3、向步骤S2的空隙中注入光致变色材料，填满空隙，密封；
S4、采用紫外光源照射光致变色材料2min，使其固化，形成光致变色层；
S5、脱模得到双光膜层变色镜片。
进一步的，步骤S3中，将胶带打一个注射孔，采用注射器通过注射孔将光致变色材料注入空隙中，再用胶带将孔封死。
进一步的，步骤S3中，在胶带上打一个通气孔，通气孔与注射孔相邻，当通气孔溢出光致变色材料时，可判定空隙中已经填满光致变色材料。由于光致变色材料的流动度较小，不利于光致变色材料进入到空隙中，通气孔的存在能够维持空隙与外界的气压平衡，便于光致变色材料的注入，并且能够通过光致变色材料的溢出判断光致变色材料填满缝隙，保证光致变色材料能够填满空隙，并通过光致变色材料的表面张力的挤压消除掉光致变色材料内部的气泡和注入过程中引入的气泡，提高光致变色膜的均匀性和镜片的佩戴效果。
作为上述技术方案的优选，本发明提供的制备方法具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，本发明中，空隙优选为5mm，用胶带固定；
S3、向步骤S2的空隙中注入光致变色材料，当光致变色材料填充到空隙体积的1/2～2/3，将空隙调整为4mm，该空隙即为光致变色层的厚度，继续注入光致变色材料，直到空隙被光致变色材料填满，密封；
S4、采用紫外光源照射光致变色材料2min，使其固化，形成光致变色层；
S5、脱模得到双光膜层变色镜片。
由于光致变色材料的粘稠度较大，流动度小，在注入过程中容易引入气泡或与接触面接触不均匀，造成光致变色膜中含有细小的气泡或固化不均匀的现象，本发明中，在当光致变色材料填充到空隙体积的1/2～2/3后，将空隙缩小，对空隙内的光致变色材料造成一定的压强，使镜片的弧面完全浸入到光致变色材料中，通过处理层的浸润性，使光致变色材料与镜片之间的接触没有缝隙，并通过压强挤出光致变色材料的中残存的气泡。
进一步的，步骤S1中，在基底表面均匀旋涂处理层，将涂好处理层的基片经过紫外光固化光源照射1min。照射1min中后，处理层的材料处于半干状态，在保证处理层与基底的粘结力的同时，提高处理层与变色层之间的粘结力。
综上所述，本发明具有以下有益效果：
本发明提供的一种双光膜层变色镜片的制备方法，镜片基底采用双光镜片，将变色和双光两项技术结合，克服了旋涂法带来的双光膜层不均匀性的缺陷，使光致变色层可以均匀的附着在镜片基底表面，变色均匀，性能优异，且能确保双光镜片基底的面形光度不受影响。
附图说明
图1为本发明制备方法流程图；
图2为本发明的实施例1～5的制备过程示意图；
图3为本发明实施例1中基底的结构示意图；
图4为本发明实施例2～5基底的结构示意图；
图5为实施例1和对比实施例的变色时间透射比。
附图标记
1.基底、2.处理层、3.光致变色层、11.镜片主片、12.镜片子片。
具体实施方式
为更进一步阐述本发明为达成预定发明目的所采取的技术手段及功效，对依据本发明提出的一种双光膜层变色镜片的制备方法，其具体实施方式、特征及其功效，详细说明如后。
本实施例所采用的材料均为市售。
材料来源见下表：
Figure PCTCN2021097823-appb-000001
Figure PCTCN2021097823-appb-000002
基底的材料为折射率1.50～1.74的光学用透明高分子材料；光学用透明高分子材料是聚碳酸酯类、聚甲基丙烯酸甲酯类或聚合物合金的任意一种，均为市售。
实施例1
一种双光膜层变色镜片，如图2所示，双光膜层变色镜片从内至外包括：基底1、处理层2和光致变色层3；光致变色层3通过紫外光照射固化于处理层2表面，其中，按照质量分数计算，光致变色层3包括如下组分：包含有丙氧基的2～20个重复单元的丙氧基化双酚A二甲基丙烯酸酯30％；包含有丙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯60％；季戊四醇四丙烯酸酯10％；其余为光引发剂， 总计100％，按照重量份数计算，处理层的材料包括如下组分：双酚A环氧丙烯酸树脂50份，己二酸二辛酯5份，乙烯基三甲氧基硅烷2份和四丁基氯化铵1份，如图3所示，基底1为一线双光镜片，包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分。
一种双光膜层变色镜片的制备方法，具体包括如下操作步骤：
S1、在基底1表面均匀旋涂处理层2；
S2、将步骤S1得到的基底1置于与基底1形状结构相适应的外模具中，并使外模具与基底1之间留有空隙，用胶带固定；
S3、向步骤S2的空隙中注入光致变色材料，填满空隙，密封；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层3；
S5、脱模得到双光膜层变色镜片。
实施例2
一种双光膜层变色镜片，如图2所示，双光膜层变色镜片从内至外包括：基底1、处理层2和光致变色层3；光致变色层3通过紫外光照射固化于处理层2表面，其中，按照质量分数计算，光致变色层3包括如下组分：包含有乙氧基的2～20个重复单元的乙氧基化双酚A二甲基丙烯酸酯40％；聚乙二醇二丙烯酸酯45％；二季戊四醇羟基五丙烯酸酯15％；其余为光引发剂，总计100％，按照重量份数计算，处理层的材料包括如下组分：双酚A环氧丙烯酸树脂60份，己二酸二辛酯6份，乙烯基三甲氧基硅烷4份和四丁基氯化铵2份，如图4所示，基底1为平顶双光镜片，包括镜片主片11和镜片子片12， 镜片主片11为看远结构，镜片子片12是看近部分。
一种双光膜层变色镜片的制备方法，如图1所示，具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，该空隙即为光致变色层的厚度，本发明中，空隙优选为4mm，用胶带固定；
S3、将胶带打一个注射孔，采用注射器通过注射孔将光致变色材料注入空隙中，再用胶带将孔封死；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层3；
S5、脱模得到双光膜层变色镜片。
基底1包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分，镜片子片11是基底向内棱镜结构，外模具为双光玻璃模具。
实施例3
一种双光膜层变色镜片，如图2所示，双光膜层变色镜片从内至外包括：基底1、处理层2和光致变色层3；光致变色层3通过紫外光照射固化于处理层2表面，其中，按照质量分数计算，光致变色层3包括如下组分：包含有环氧基和丙氧基的2～20个重复单元的烷氧基化双酚A二甲基丙烯酸酯55％；包含有乙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯35％；二季戊四醇羟基五丙烯酸酯10％；其余为光引发剂，总计100％；按照重量份数计算，处理层的材料包 括如下组分：双酚A环氧丙烯酸树脂75份，己二酸二辛酯7份，乙烯基三甲氧基硅烷4份和四丁基氯化铵2份，基底1为平顶双光镜片，包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分。
一种双光膜层变色镜片的制备方法，如图1所示，具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，该空隙即为光致变色层的厚度，本发明中，空隙优选为5mm，用胶带固定；
S3、向步骤S2的空隙中注入光致变色材料，当光致变色材料填充到空隙体积的1/2～2/3，将空隙调整为4mm，继续注入光致变色材料，直到空隙被光致变色材料填满，密封；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层3；
S5、脱模得到双光膜层变色镜片。
实施例4
一种双光膜层变色镜片，如图2所示，双光膜层变色镜片从内至外包括：基底1、处理层2和光致变色层3；光致变色层3通过紫外光照射固化于处理层2表面，其中，按照质量分数计算，光致变色层3包括如下组分：甘油化双酚A二甲基丙烯酸酯和双酚A甘油化(1-丙三醇/苯酚)二甲基丙烯酸酯50％；包含有丙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯20％；季戊四醇三丙烯酸酯30％；其余为 光引发剂，总计100％，按照重量份数计算，处理层的材料包括如下组分：双酚A环氧丙烯酸树脂65份，己二酸二辛酯5份，乙烯基三甲氧基硅烷5份和四丁基氯化铵1份，如图4所示，基底1为平顶双光镜片，包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分。
一种双光膜层变色镜片的制备方法，如图1所示，具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，该空隙即为光致变色层的厚度，本发明中，空隙优选为5mm，用胶带固定；
S3、将胶带打一个注射孔和通气孔，通气孔与注射孔相邻，当通气孔溢出光致变色材料时，可判定空隙中已经填满光致变色材料采用注射器通过注射孔将光致变色材料注入空隙中，再用胶带将孔封死向步骤S2的空隙中注入光致变色材料，当光致变色材料填充到空隙体积的1/2～2/3，将空隙调整为4mm，继续注入光致变色材料，直到空隙被光致变色材料填满，密封；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层3；
S5、脱模得到双光膜层变色镜片。
基底1包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分，镜片子片11是基底向内棱镜结构，外模具为双光玻璃模具。
实施例5
一种双光膜层变色镜片，如图2所示，双光膜层变色镜片从内至外包括：基底1、处理层2和光致变色层3；光致变色层3通过紫外光照射固化于处理层2表面，其中，按照质量分数计算，光致变色层3包括如下组分：包含有乙氧基的2～20个重复单元的乙氧基化双酚A二甲基丙烯酸酯45％；包含有乙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯40％；二季戊四醇六丙烯酸酯15％；其余为光引发剂，总计100％，按照重量份数计算，处理层的材料包括如下组分：双酚A环氧丙烯酸树脂55份，己二酸二辛酯5份，乙烯基三甲氧基硅烷4份和四丁基氯化铵2份，如图4所示，基底1为平顶双光镜片，包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分。
一种双光膜层变色镜片的制备方法，如图1所示，具体包括如下操作步骤：
S1、在基底表面均匀旋涂处理层，在紫外光下照射1min；
S2、将步骤S1得到的基底置于与基底形状结构相适应的外模具中，并使外模具与基底之间留有空隙，该空隙即为光致变色层的厚度，本发明中，空隙优选为5mm，用胶带固定；
S3、将胶带打一个注射孔和通气孔，通气孔与注射孔相邻，当通气孔溢出光致变色材料时，可判定空隙中已经填满光致变色材料采用注射器通过注射孔将光致变色材料注入空隙中，再用胶带将孔封死向步骤S2的空隙中注入光致变色材料，当光致变色材料填充到空隙体 积的1/2～2/3，将空隙调整为4mm，继续注入光致变色材料，直到空隙被光致变色材料填满，密封；
S4、采用紫外光照射光致变色材料使其固化，形成光致变色层3；
S5、脱模得到双光膜层变色镜片。
基底1包括镜片主片11和镜片子片12，镜片主片11为看远结构，镜片子片12是看近部分，镜片子片11是基底向内棱镜结构，外模具为双光玻璃模具。
对比实施例
一种双光膜层变色镜片，双光膜层变色镜片从内至外包括：基底和光致变色层；其中，按照质量分数计算，光致变色层包括如下组分：包含有乙氧基的2～20个重复单元的乙氧基化双酚A二甲基丙烯酸酯56％；聚乙二醇二丙烯酸酯为包含有乙氧基的2～20个重复单元的聚乙二醇二丙烯酸酯32％；二季戊四醇羟基五丙烯酸酯12％；其余为光引发剂，总计100％，基底为平顶双光镜片。
平顶双光镜片制备方法：采用旋涂法在基底上均匀涂抹光致变色层，固化。
对实施例1和对比实施例进行镜片光学变色光谱分析(褪色透射比检测)，结果见表1和图5，检测仪器：BYK透射雾度仪，环境条件：温度23℃。
表1.实施例1和对比实施例的变色时间透射比
Figure PCTCN2021097823-appb-000003
Figure PCTCN2021097823-appb-000004
通过上表可知，本发明提供的双光膜层变色镜片的制备方法得到的双光膜镜片的变色速度更快。
对实施例1和对比实施例的中心和距中心25mm处两个点分别进行镜片光学变色光谱分析(褪色透射比检测)，结果见表2，检测仪器：BYK透射雾度仪，环境条件：温度20℃。
表2.对实施例1和对比实施例的中心和距中心25mm处光学变色光谱分析结果
Figure PCTCN2021097823-appb-000005
表3.抗老化开裂实验结果
Figure PCTCN2021097823-appb-000006
通过上表可知，本发明提供的双光膜层变色镜片的制备方法得到的双光膜镜片的变色更加均匀，镜片的中心点和距中心25mm处的镜 片透过率基本没有差异，保证了光致变色膜的均匀性，近光处颜色变化快且均匀，而对比实施例提供的镜片的中心点和距中心25mm处的镜片透过率有一定的差异。
以上所述，仅是本发明的较佳实施例而已，并非对本发明作任何形式上的限制，虽然本发明已以较佳实施例展示如上，但并非用以限定本发明，任何熟悉本专业的技术人员，在不脱离本发明技术方案范围内，当可利用上述揭示的技术内容做出些许更动或修饰为等同变化的等效实施例，但凡是未脱离本发明技术方案的内容，依据本发明的技术实质对以上实施例所作的任何简单修改、等同变化与修饰，均仍属于本发明技术方案的范围内。

Claims (10)

  1. 一种双光膜层变色镜片，其特征在于，所述双光膜层变色镜片从内至外包括：基底(1)、处理层(2)和光致变色层(3)；所述光致变色层(3)通过紫外光照射固化于所述处理层(2)表面；所述基底(1)为一线双光镜片或平顶双光镜片。
  2. 根据权利要求1所述的一种双光膜层变色镜片，其特征在于，所述基底(1)包括镜片主片(11)和镜片子片(12)，所述镜片主片(11)为看远结构，所述镜片子片(12)是看近部分。
  3. 根据权利要求1所述的一种双光膜层变色镜片，其特征在于，按照重量份数计算，处理层(2)的材料包括如下组分：双酚A环氧丙烯酸树脂50～80份，己二酸二辛酯5～8份，乙烯基三甲氧基硅烷2～5份和四丁基氯化铵1～3份。
  4. 根据权利要求1所述的一种双光膜层变色镜片，其特征在于，按照质量分数计算，所述光致变色层(3)包括如下组分：双酚A二甲基丙烯酸酯30％～70％；聚乙二醇二丙烯酸酯10％～60％；多官能团丙烯酸酯单体10％～30％；其余为光引发剂，总计100％。
  5. 根据权利要求1所述的一种双光膜层变色镜片，其特征在于，所述光学用透明高分子材料是聚碳酸酯类、聚甲基丙烯酸甲酯类或聚合物合金中的任意一种。
  6. 根据权利要求1～5任意一项所述的一种双光膜层变色镜片的制备方法，其特征在于，具体包括如下操作步骤：
    S1、在基底(1)表面均匀旋涂处理层(2)；
    S2、将步骤S1得到的基底(1)置于与基底(1)形状结构相适 应的外模具中，并使外模具与基底(1)之间留有空隙，用胶带固定；
    S3、向步骤S2的空隙中注入光致变色材料，填满空隙，密封；
    S4、采用紫外光照射光致变色材料使其固化，形成光致变色层(3)；
    S5、脱模得到所述双光膜层变色镜片。
  7. 根据权利要求6所述的一种双光膜层变色镜片的制备方法，其特征在于，包括如下操作步骤：
    S1、在基底(1)表面均匀旋涂处理层(2)；
    S2、将步骤S1得到的基底(1)置于与基底(1)形状结构相适应的外模具中，并使外模具与基底之间留有空隙，空隙为5mm，用胶带固定；
    S3、向步骤S2的空隙中注入光致变色材料，当光致变色材料填充到空隙体积的1/2～2/3，将空隙调整为4mm，该空隙即为光致变色层的厚度，继续注入光致变色材料，直到空隙被光致变色材料填满，密封；
    S4、采用紫外光源照射光致变色材料2min，使其固化，形成光致变色层(3)；
    S5、脱模得到双光膜层变色镜片。
  8. 根据权利要求6或7所述的一种双光膜层变色镜片的制备方法，其特征在于，步骤S1中，在基底(1)表面均匀旋涂处理层(2)，将涂好处理层(1)的基片经过紫外光固化光源照射1min。
  9. 根据权利要求8所述的一种双光膜层变色镜片的制备方法， 其特征在于，所述步骤S3中，将胶带打一个注射孔，采用注射器通过注射孔将光致变色材料注入空隙中，再用胶带将孔封死。
  10. 根据权利要求8所述的一种双光膜层变色镜片的制备方法，其特征在于，步骤S3中，在胶带上打一个通气孔，通气孔与注射孔相邻，当通气孔溢出光致变色材料时，可判定空隙中已经填满光致变色材料。
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