Hoya Corporation

Nissan Chemical Industries Limited

Eiichi Yajima

Jun Watanabe

Hiroshi Ohta

Kazuo Inoue

Toshikazu Hashimoto

Yoshifumi Watanabe

Yoshitane Watanabe

Keitaro Suzuki

Osamu Asai

Katsushi Hamakubo

Masahisa Kosaka

Shigetoshi Kono

Kae Ito

Shigeru Takizawa

Tetsunori Matsukura

Kunio Sasaki

Takeshi Imizu

Tsuyoshi Sakurazawa

Yoshiro Hirose

Mitsuo Sugimura

Takeshi Sakamoto

Kazunori Mikami

Eisaku Kuroyama

The present invention relates to a photochromic film comprising a photochromic dye and a resin component. The photochromic film has a nanoindentation hardness of equal to or greater than 800 nm on at least one of surfaces, surface A, thereof. The present invention further relates to a method of manufacturing a photochromic lens. The method of manufacturing a photochromic lens of the present invention comprises forming a photochromic film having a nanoindentation hardness ranging from 500 to 5000 nm on an outermost surface thereof as well as having a smaller nanoindentation hardness on a surface facing a first mold than that on the outermost surface by coating a photochromic liquid comprising a photochromic dye and a curable component on one surface of the first mold for formation of one of surfaces of a lens and subjecting the photochromic liquid to curing treatment, and a photochromic lens comprising a photochromic film on a lens substrate is obtained by means of the above first mold.

Photochromic film, photochromic lens comprising the same, and method of manufacturing photochromic lens

An aspect of the present invention relates to a polarizing lens, which comprises a polarizing layer comprising a dichroic dye and a functional film in this order on a lens substrate, and further comprises a waterborne resin layer between the polarizing layer and the functional film as a layer adjacent to both the polarizing layer and functional film, wherein the waterborne resin layer is greater than 0.50 &#x3bc;m in thickness and has been formed by coating and drying a waterborne resin composition comprising a polyether polyurethane resin and a water-based solvent.

Polarizing lens

An aspect of the present invention relates to a method of manufacturing an eyeglass lens, which comprises a step of conducting polishing processing of a non-optical surface of a semifinished lens, one surface of which is an optical surface and the other surface of which is the non-optical surface, to create an optical surface. The semifinished lens comprises an acrylic coating on an optical surface of a lens substrate, a surface of the acrylic coating having a contact angle relative to water of equal to or less than 90&#xb0;, prior to the polishing processing, a protective film is adhered through an adhesive layer of the film to the surface of the acrylic coating, and the polishing processing is conducted by polishing a non-optical surface of the lens substrate in a state where the protective film surface is secured in a block jig.

Method of manufacturing eyeglass lens

An aspect of the present invention relates to a method of manufacturing a polarizing member comprising: forming a polarizing film by coating a dichroic dye-containing solution on a substrate; subjecting the polarizing film that has been formed to a treatment to immobilize the dichroic dye in the film; coating a waterborne resin composition containing a resin component and a water-based solvent on the polarizing film after the immobilization treatment, and drying the composition to form a primer layer; and forming a functional film on the primer layer that has been formed; wherein after the immobilization treatment but before the coating of the waterborne resin composition, an article to be coated is subjected to heat treatment.

Method of manufacturing polarizing member

An aspect of the present invention relates to a method of manufacturing a polarizing eyeglass lens comprising forming an orientation layer on a substrate, sliding a rubbing member across the orientation layer in a state of contact with the orientation layer to form curved rubbing traces on a surface of the orientation layer, forming a polarizing layer by depositing and orienting a dichroic dye on the orientation layer, and subjecting the polarizing layer to a treatment of immobilizing the dichroic dye in the polarizing layer.

Method of manufacturing polarizing eyeglass lens

An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly in the form of a closed curve.

An aspect of the present invention relates to a polarizing lens comprising a polarizing layer on a substrate, wherein the polarizing layer comprises polarization axes that are at least partly curved.

An optional element having a cured coating film on optical base material wherein the cured coating film is prepared with a coating composition comprising an organosilicon compound and modified stannic oxide-zirconium oxide composite colloidal particles which are obtained by partially or fully coating the surface of stannic oxide-zirconium oxide composite colloidal particles with tungstic oxide-stannic oxide composite colloidal particles. The formed cured coating film is excellent in hot water resistance, and light-resistance and weathering resistance are not impaired even when the antireflection film made by vepor deposition of inorganic oxides is applied on the cured coating film.

Optical elements having cured coating film

A coating composition comprising an organosilicon compound and modified stannic oxide - zirconium oxide composite colloidal particles which are obtained by partially or fully coating the surface of stannic oxide - zirconium oxide composite colloidal particles with tungstic oxide - stannic oxide composite colloidal particles. The formed cured coating film is excellent in hot water resistance, and light-resistance and weathering resistance are not impaired even when the antireflection film made by vepor deposition of inorganic oxides is applied on the cured coating film.

Coating compositions

A hard coating film is disclosed which is formed by hardening a coating composition containing the following component A and/or component B and component C:

Hard coating film and optical elements having such coating film

A polyurethane lens is produced by (a) adding to a monomer mixture comprising a polyisocyanate and a polythiol, a phosphoric acid ester represented by the general formula (I) ##STR1## (R.sub.1 and R.sub.2 which may be the same or different are each an alkyl group of 1-8 carbon atoms) and then (b) subjecting the monomer mixture containing the phosphoric acid ester, obtained in the step (a) to cast polymerization in a mold for plastic lens production. Said polyurethane lens has good releasability from mold, is free from color unevenness after tinting and cloudiness, and possesses high refractive index (N.sub.D) and high optical dispersion.

Growing community of inventors

Shinjuku-ku, Japan

Eiichi Yajima