Seiko Epson Corporation

Panasonic Electric Works Co., Ltd.

Jun Kinoshita

Katsuyoshi Takeshita

Yusuke Kutsukake

Shuji Naito

Toshiyuki Miyabayashi

Takeyuki Yamaki

Mikito Nakajima

Hiroshi Yokogawa

Koichi Takahama

Akira Tsujimoto

Ryozo Fukuzaki

Hidenori Komai

The plastic lens has the hard coat layer on a plastic lens base material containing at least sulfur atom and the organic anti-reflection film on the hard coat layer and further has a primer layer between the plastic lens base material and the hard coat layer. The hard coat layer comprises metal oxide particulates at least containing titanium oxide with rutile-type crystal structure and an organic silicon compound expressed by general Formula: R1SiX13. The organic anti-reflection film comprises a coating composition at least containing an organic silicon compound expressed by general Formula: R2nR3 mSiX24-n-m and silica system particulates of 1 to 150 nm mean particle diameter and has a refractive index which is lower than that of that of the hard coat layer by 0.10 or more.

Plastic lens and method of manufacturing a plastic lens

A plastic lens includes: a plastic lens base material; a hard coat layer formed on the plastic lens base material; an organic antireflection film formed on the hard coat layer; and a primer layer between the plastic lens base material and the hard coat layer. The plastic lens base material contains at least a sulfur atom. The hard coat layer contains at least: fine metal oxide particles containing a titanium oxide having a rutile-type crystalline structure; and an organosilicon compound represented by a general formula of RSiX. The antireflection film contains a coating composition containing at least: an organosilicon compound represented by a general formula of XRSi&#x2014;Y&#x2014;SiRX; an epoxy group-containing organic compound containing one or more epoxy group in a molecule; and fine silica particles with average particle size of 1 to 150 nm, the antireflection film having a refractive index lower than that of the hard coat layer by 0.10 or more.

Plastic lens and manufacturing method of plastic lens

A lens including a lens base material, a hard coat layer that is laminated on the lens base material directly or via a primer layer and includes a metal oxide fine particle, an organic silicon compound and a polyfunctional epoxy compound as principal components, and an antireflection layer that is laminated on the hard coat layer and includes a porous silica fine particle and a second organic silicon compound as principal components.

Lens and method of manufacturing lens

Coating composition

Transparent plastic material, optical article based on the material, and

Growing community of inventors

Nagano-ken, Japan

Jun Kinoshita