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:
Oct. 30, 2012
Filed:
Sep. 25, 2009
Tatsuo Hidaka, Hyogo, JP;
Junichi Nakamura, Hyogo, JP;
Takuro Ikeda, Hyogo, JP;
Hidekazu Hashima, Hyogo, JP;
Kohei Fukumi, Osaka, JP;
Naoyuki Kitamura, Osaka, JP;
Junji Nishii, Osaka, JP;
Tatsuo Hidaka, Hyogo, JP;
Junichi Nakamura, Hyogo, JP;
Takuro Ikeda, Hyogo, JP;
Hidekazu Hashima, Hyogo, JP;
Kohei Fukumi, Osaka, JP;
Naoyuki Kitamura, Osaka, JP;
Junji Nishii, Osaka, JP;
Nihon Yamamura Glass Co, Ltd., Hyogo, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
An optical glass having a high refractive index (particularly preferably a refractive index of 1.6 or more), low dispersion (an Abbe number of 45 or more), a low deformation point, and improved resistance to devitrification upon molding, and suitable for precision-mold press molding or other molding processes and also suitable for transfer of a fine structure is provided. The optical glass contains 1.0-4.5 wt. % SiO, 30.5-50.0 wt. % BO, 1.1-8.0 wt. % LiO, 10.1-19.5 wt. % BaO, 15.5-30.0 wt. % ZnO, 3.0-15.0 wt. % YO, and 10.0-19.5 wt. % LaO.