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:
May. 30, 2006
Filed:
May. 20, 2004
Applicants:
Mitsuaki Matsumoto, Osaka, JP;
Keiichi Kuramoto, Kadoma, JP;
Youhei Nakagawa, Hirakata, JP;
Hiroaki Izu, Hirakata, JP;
Hitoshi Hirano, Nishomiya, JP;
Nobuhiko Hayashi, Osaka, JP;
Inventors:
Mitsuaki Matsumoto, Osaka, JP;
Keiichi Kuramoto, Kadoma, JP;
Youhei Nakagawa, Hirakata, JP;
Hiroaki Izu, Hirakata, JP;
Hitoshi Hirano, Nishomiya, JP;
Nobuhiko Hayashi, Osaka, JP;
Assignee:
Sanyo Electric Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 9/00 (2006.01); G02B 6/028 (2006.01);
U.S. Cl.
CPC ...
Abstract
A gradient-index lens is structured by a multilayer film that includes therein a plurality of layers each of which has different refractive index and layer thickness from the other.