Method for manufacturing spectacle lens
A technology for spectacle lenses and a manufacturing method, which is applied in the directions of glasses/goggles, glasses/protective glasses, applications, etc., can solve the problems of high light transmission coefficient, weak lens concentration, and reduce the light transmission coefficient of spectacle lenses, so as to achieve the light transmission coefficient The effect of high and high polarization function
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no. 1 approach 〕
[0017] The present embodiment relates to a method for manufacturing a spectacle lens, the method comprising: coating a coating liquid containing 0.04-1.5 mass % of a dichroic pigment on a rubbing-treated surface by a spin coating method at a rotational speed of 200-600 rpm, Thus, a polarizing layer is formed.
[0018] Hereinafter, it demonstrates in more detail.
[0019]
[0020] The above-mentioned coating liquid contains at least a dichroic dye. The polarizability of dichroic dyes is usually expressed mainly by unidirectional orientation of dichroic dyes. In order to unidirectionally orient the dichroic dye, it is preferable to give a polishing treatment to the surface on which the coating liquid containing the dichroic dye is applied.
[0021] (Dichroic Pigment)
[0022] "Dichroism" refers to the property that the color of transmitted light differs depending on the direction of propagation due to the anisotropy of selective absorption of light by the medium. The dichr...
no. 2 approach 〕
[0089] In the above-mentioned first embodiment, the method for producing a so-called "polarized lens" in which a polarizing layer is laminated on the surface of a lens base material in an eyeglass lens has been described, but in this embodiment, the functional layer is a photochromic lens. The embodiment of the layer, that is, the manufacturing method of the so-called "polarization control lens" in which both the polarizing layer and the photochromic layer are laminated on the surface of the lens base material will be described.
[0090] The , , , and are the same as those in the above-described embodiment, and thus descriptions are omitted.
[0091]
[0092] In the spectacle lens of one embodiment of the present disclosure, the lamination order is not particularly limited. In this embodiment, the polarizing layer and the photochromic layer are laminated with the intermediate layer interposed therebetween. In one aspect of the present embodiment, the polarizing layer is in...
Embodiment 1
[0150] Production of polarized lenses
[0151] (1) Formation of the alignment layer
[0152] As the lens base material, a meniscus-shaped polythiourethane lens (manufactured by HOYA Co., Ltd., trade name EYAS, center wall thickness 2.0 mm thick, diameter 75 mm, convex surface curvature (average value) about +0.8) was used , a hard coating composition was prepared by the method described in the following (6), coated on the convex surface of the above-mentioned lens substrate by spin coating, heated at a heating temperature of 90° C. for 120 minutes, and cured, thereby forming a thickness of 2μm hard coat.
[0153] SiO with a thickness of about 0.2 μm was formed on the hard coat layer by a vacuum evaporation method 2 membrane.
[0154] SiO formed in 2 On the film, a unidirectional buffing process was performed while pressing the nylon-wound roll side by constant pressure and rotating it in one direction. In this way, an alignment layer is formed on the convex surface of the...
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Abstract
Description
Claims
Application Information
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