The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 2012
Filed:
Sep. 17, 2010
Hiroyuki Arishima, Koriyama, JP;
Hiroki Hotaka, Koriyama, JP;
Hiroyuki Arishima, Koriyama, JP;
Hiroki Hotaka, Koriyama, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A compound capable of satisfying both high refractive index and high light resistance, and a photocurable composition containing it, are provided. Further, an optical element having good light resistance against blue laser light, and an optical head device using it, are provided. A polymerizable compound represented by SiAAAAwherein silicon and four cyclic groups are bonded directly or via oxygen. each of A, A, Aand Awhich are independent of one another, is —(O)—X; and each of four m's which are independent of one another, is 0 or 1. X is preferably a phenyl group. From 0 to 3 hydrogen atoms in the phenyl group are substituted by a polymerizable substituent represented by CH═CR—COO—Y—, and some or all of remaining hydrogen atoms in the phenyl group may be substituted by a methyl group or a fluorine atom.