Manufacturing method of spectacle lenses
A technology for spectacle lenses and manufacturing methods, which is applied in the directions of glasses/protective glasses, glasses/goggles, instruments, etc., can solve the problems of light lens concentration, high light transmission coefficient, and reduce the light transmission coefficient of spectacle lenses, etc., and achieve high polarization function , The effect of high light transmission coefficient
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no. 1 approach 〕
[0017] This embodiment relates to a method for manufacturing spectacle lenses, the method comprising: coating a coating solution containing 0.04 to 1.5% by mass of a dichroic pigment on a polished (rubbing) treated surface by a spin coating method at a rotation speed of 200 to 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 polarizing property of a dichroic dye is generally expressed mainly by unidirectional orientation of the dichroic dye. In order to unidirectionally align the dichroic dye, it is preferable to perform buffing treatment on 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 propagation direction due to the anisotropy of selective absorption of light by a me...
no. 2 approach 〕
[0089] In the above-mentioned first embodiment, the manufacturing method of the so-called "polarized lens" formed by laminating the polarizing layer on the surface of the lens base material in the spectacle lens was described, but in this embodiment, the functional layer is photochromic. Embodiments of layers, that is, a method of manufacturing a so-called "polarization light-adjustable lens" formed by laminating both a polarizing layer and a photochromic layer on the surface of a lens substrate will be described.
[0090] About , , , and are the same as the above-mentioned embodiment, Therefore Description is abbreviate|omitted.
[0091]
[0092] In the spectacle lens according to one embodiment of the present disclosure, the lamination order is not particularly limited. In this embodiment mode, the polarizing layer and the photochromic layer are laminated with an intermediate layer interposed therebetween. In one aspect of the present embodiment, a polarizing layer is in...
Embodiment 1
[0150] Production of Polarized Lenses
[0151] (1) Formation of 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. , prepare a hard coating composition by the method described in the following (6), apply it on the convex surface of the above-mentioned lens substrate by the spin coating method, heat at a heating temperature of 90° C. for 120 minutes, and perform a curing treatment, thus forming a thickness 2μm hard coating.
[0153] SiO with a thickness of about 0.2 μm was formed on the above hard coat layer by vacuum evaporation. 2 membrane.
[0154] In the formation of SiO 2 On the film, a roller wrapped with nylon was pressed in with a constant pressure and rotated in one direction, thereby implementing unidirectional polishing. In this manner, an alignment layer was ...
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Abstract
Description
Claims
Application Information
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