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:
Jun. 26, 2012
Filed:
Dec. 04, 2007
Hideki Aikoh, Osaka, JP;
Makoto Takashima, Nara, JP;
Eishin Mori, Kyoto, JP;
Kousei Sano, Osaka, JP;
Joji Anzai, Osaka, JP;
Kenichi Shinotani, Osaka, JP;
Hideki Aikoh, Osaka, JP;
Makoto Takashima, Nara, JP;
Eishin Mori, Kyoto, JP;
Kousei Sano, Osaka, JP;
Joji Anzai, Osaka, JP;
Kenichi Shinotani, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
An object of the invention is to provide an optical element for use in an optical information recording and reproducing device or a like device for recording or reproducing information with respect to an information recording medium using laser light, wherein the optical element is a resin optical element capable of suppressing lowering in transmittance due to deterioration by irradiation of light having a high energy density, and maintaining a high transmittance for a long time. To realize the above object, used is an optical element made of a silicon resin cured material obtained by subjecting a silicon resin composition containing a silsesquioxane compound to a curing treatment.