Seiko Epson Corporation

Kabushiki Kaisha Suwa Seikosha

Nippon Chemical Industrial

Takao Mogami

Satoshi Kubota

Mikito Nakajima

Etsuo Okaue

Hiroshi Kawashima

Satoru Miyashita

Kogo Endo

Mikito Nakashima

Kenji Kojima

Seiji Shimura

Tadao Kojima

Yoichi Ushiyama

Yoshiko Inaba

Kazukichi Hashimoto

Tetsuo Nakagawa

Hirokazu Deguchi

A polarizer plate including a polarizer substrate formed of a polarizer layer and supporting layers disposed on opposite surfaces of the polarizer layer; an undercoat layer disposed on one surface of the polarizer substrate; an anti-reflection layer disposed on the undercoat layer; and an anti-staining layer including a fluorine-containing silane compound disposed on said anti-reflection layer. The undercoat layer preferably has a specular glossiness according to JIS Z 8741 of from 10 to 40 and a haze according to JIS K 6900 of from 5 to 30%.

Polarizer plate with anti-stain layer

Polarizing plate and method of production

An inorganic coating film having improved water repellency is provided. The improved surface is provided by treating an inorganic coating film with a material that is reached or adsorbed on the surface of the inorganic coat to increase water repellency. The inorganic coating to be treated may be a silicon dioxide film. The materials used to treat the film include: (1) halogenated silane compounds; (2) silane compounds having a structure including at least one bond selected from Si--H, Si--OH, Si--OR, Si--SH and Si--SR, wherein R is an organic group; (3) silane compounds having a structure including at least one of ##STR1## wherein R1, R2 and R3 are hydrogen or an organic group and (4) reactive organic compounds having a fluorine substituting group, hydrogen fluoride or a metal fluoride.

Synthetic resin ophthalmic lens having an inorganic coating

Antimicrobial polymer, contact lens and contact lens-care articles

Coated synthetic resin lenses having a primer layer of a copolymer of an acrylic and/or methacrylic monomer and an aromatic vinyl compound between the base material and a cured abrasion resistant layer of colloidal silica and an inorganic anti-reflection coating are provided. The cured coat of colloidal silica has a particle diameter between about 1 and 100 millimicrons and is dispersed in a hydrolyzed silane compound. The organic primer coating improves adhesion properties between the base material and the cured abrasion-resistant layer resulting in coated lenses of improved impact resistance.

Coated synthetic resin lens

An improved synthetic resin opthalmic lens and a method for treating the surface of the lens are provided. The lens is formed by polymerizing at least one bis(allyloxycarbonyloxy-alkoxy) dihalide-phenyl alkane and one bifunctional allyl compound, optionally with a bis(allylcarbonate) compound. The lens is chemically treated with an aqueous solution of polyethyleneglycol and an alkali metal hydroxide and a surface hard coat is formed on the treated surface.

Synthetic resin ophthalmic lens having a surface hard coat

A synthetic resin lens having a refractive index of at least 1.55 and an antireflection coating thereon is provided. The antireflection coating includes at least a hard coat layer formed of a dielectric substance having a refractive index n.sub.h disposed on the lens having a refractive index n.sub.s (n.sub.s .noteq.n.sub.h) and at least one antireflection layer of a dielectric or metallic material disposed between the lens and the hard coat layer. The antireflection layer has a refractive index n in the range represented by the formula: ##EQU1## and an optical film thickness of 4 (where denotes a wavelength in the range between about 450 nm to 650 nm) or two or more plies optically equivalent to a single layer of the antireflection material. The synthetic resin lens may be prepared by radical polmerization of a mixed monomer solution of styrene, 2,2-bis[3,5-dibromo-4-(2-methacryloloxyethoxy)phenyl]propane, and ultraviolet absorber and a light stabilizer. Such synthetic resin lenses generally have a refractive index of about 1.6 and a surface hardening layer usually SiO.sub.2 has a refractive index of about 1.46. It is desirable to provide an antireflection layer having a refractive index of about 1.52 which may be provided by a first layer of silicon dioxide and another layer of an oxide selected from the group of oxides of ZrO.sub.2, HfO.sub.2, Ti.sub.2 O.sub.3 TiO.sub.2, Ta.sub.2 O.sub.5, Si.sub.3 N.sub.4, Yb.sub.2 O.sub.3, Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3. An outer antireflection layer is then disposed on the outer surface of the surface hardening layer.

Synthetic resin lens and antireflection coating

Photochromic coating compositions for synthetic resin ophthalmic lenses to impart photochromic properties to the lenses are provided. The photochromic coating composition includes an organic silicon compound to impart a surface hard coating and a photochromic material dispersed in the hard coat to impart photochromic properties. The photochromic materials may include compounds including the molybdic acid amine group, dithizone-mercury polymers, halogenated silver or copper, and a benzopyrylospiran compound. The coating composition is prepared by dispersing the photochromic material in a silicon hard coating composition. The coating composition may be coated on the surface of a synthetic resin lens by dipping, spraying, spin coating, flow coating and the like and then dry-heated to be cured. The coating composition is applied in thicknesses from about 1 to 30 microns. The synthetic resin lenses which may be coated are transparent resins, such as polycarbonate resins, acryl resin, CR-39 resins, polystyrene and the like.

Photochromic coating composition and photochromic synthetic resin

A surface hard coating composition for a synthetic resin lens including:

Surface hard coat for a synthetic resin lens

Growing community of inventors

Suwa, Japan

Takao Mogami