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Optical film for eyewear with light-blocking function, optical laminate using same and eyewear with light-blocking function

An optical film and optical layer technology, applied in optics, optical components, optical components, etc., can solve problems such as darkening of the field of view, and achieve the effect of superior fashion

Inactive Publication Date: 2019-11-26
NIPPON KAYAKU CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the other hand, protective glasses that use light-absorbing pigments and the like also absorb light in the visible light range other than the blue light that is the object of absorption, and there is a problem that the field of vision is too darkened beyond the necessary limit.

Method used

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  • Optical film for eyewear with light-blocking function, optical laminate using same and eyewear with light-blocking function
  • Optical film for eyewear with light-blocking function, optical laminate using same and eyewear with light-blocking function
  • Optical film for eyewear with light-blocking function, optical laminate using same and eyewear with light-blocking function

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0071]

[0072] Using the cholesteric liquid crystal coating liquid of preparation example 1, each light reflection layer was produced by the following procedure. As the plastic substrate, a PET film (A4100, thickness 50 μm, primer-free) manufactured by Toyobo Co., Ltd. was used.

[0073] (1) At room temperature, the coating solution of Preparation Example 1 was coated on a PET film using a wire bar so that the film thickness after drying would be 1.2 μm to form a coating film.

[0074] (2) The obtained coating film was heated at 150° C. for 5 minutes to remove the solvent to obtain a cholesteric liquid crystal phase. Next, UV was irradiated for 5 to 10 seconds with a high-pressure mercury lamp (manufactured by Harison Toshiba Lighting) with an output of 120 W to fix the cholesteric liquid crystal phase and form a light reflection layer on the PET film.

[0075] (3) The obtained light reflection layer was peeled from the PET film, and the optical film of this invention cont...

Embodiment 2

[0077]

[0078] Using the cholesteric liquid crystal coating liquids of formulation example 1 and formulation example 3, each light reflection layer was produced by the following procedure. A PET film (A4100, thickness 50 μm, primer-free) manufactured by Toyobo Co., Ltd. was used as the plastic substrate.

[0079] (1) At room temperature, the coating solution of Preparation Example 3 was coated on a PET film using a wire bar so that the film thickness after drying would be 1.2 μm to form a coating film.

[0080] (2) The obtained coating film was heated at 150° C. for 5 minutes to remove the solvent to obtain a cholesteric liquid crystal phase. Next, UV was irradiated for 5 to 10 seconds with a high-pressure mercury lamp (manufactured by Harison Toshiba Lighting) with an output of 120 W to fix the cholesteric liquid crystal phase and form a light reflection layer on the PET film.

[0081] (3) Through this operation, the light reflection layer L1 which reflects left circularl...

Embodiment 3

[0086]

[0087] Using the cholesteric liquid crystal coating liquids of formulation example 2 and formulation example 4, each light reflection layer was produced by the following procedure. A PET film (A4100, thickness 50 μm, primer-free) manufactured by Toyobo Co., Ltd. was used as a plastic substrate.

[0088] (1) At room temperature, the coating solution of Preparation Example 2 was coated on a PET film using a wire bar so that the film thickness after drying would be 1.8 μm to form a coating film.

[0089] (2) The obtained coating film was heated at 150° C. for 5 minutes to remove the solvent to obtain a cholesteric liquid crystal phase. Next, UV was irradiated for 5 to 10 seconds with a high-pressure mercury lamp (manufactured by Harison Toshiba Lighting) with an output of 120 W to fix the cholesteric liquid crystal phase and form a light reflection layer on the PET film.

[0090] (3) Through this operation, the light reflection layer R2 which reflects the right circul...

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Abstract

An optical film for eyewear with a light-blocking function according to the present invention is provided with at least one light reflection layer including a cholesteric liquid crystal layer having acentral reflection wavelength in a wavelength region of 400-500 nm inclusive, wherein the light reflection layer is disposed outermost from the wearer side of the eyewear, and the average visible light transmittance is 60% or more.

Description

technical field [0001] The present invention relates to an ophthalmic device with a light-shielding function, which is used for an ophthalmic device with a light-shielding function (glasses, sunglasses, goggles, a helmet visor, etc.) used, for example, as protective glasses for reducing glare after cataract surgery An optical film, an optical film laminate using the optical film, and an ophthalmic device with a light-shielding function. Background technique [0002] As one of cataract treatments in which the lens in the eye becomes cloudy and white, surgery is known in which an artificial lens (intraocular lens) is inserted into the eye to replace the removed cloudy lens. On the other hand, regarding the state of the eye after surgery, although vision is restored, blue light is more likely to enter the eye than before cataract surgery because light on the short wavelength side usually passes through the artificial lens. In addition, since the turbidity of the lens is sudden...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B5/30B32B7/023B32B27/06G02C7/10
CPCG02B5/3016G02C7/104G02C7/12G02C2202/16
Inventor 矢作悦幸田中兴一
Owner NIPPON KAYAKU CO LTD
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