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. 17, 2005
Filed:
Oct. 16, 2003
Shogo Yamamoto, Hachioji, JP;
Hiroyuki Hattori, Hachioji, JP;
Etsuzo Kurihara, Hachioji, JP;
Shinichiro Saito, Hachioji, JP;
Takashi Matsumaru, Hachioji, JP;
Taichiro Saito, Hachioji, JP;
Kazuo Ishida, Hachioji, JP;
Yuichi Atarashi, Hachioji, JP;
Norikazu Arai, Hachioji, JP;
Shogo Yamamoto, Hachioji, JP;
Hiroyuki Hattori, Hachioji, JP;
Etsuzo Kurihara, Hachioji, JP;
Shinichiro Saito, Hachioji, JP;
Takashi Matsumaru, Hachioji, JP;
Taichiro Saito, Hachioji, JP;
Kazuo Ishida, Hachioji, JP;
Yuichi Atarashi, Hachioji, JP;
Norikazu Arai, Hachioji, JP;
Konica Corporation, Tokyo, JP;
Abstract
An objective lens for use in an optical pickup apparatus for conducting recording and/or reproducing information for an optical information recording medium, has a lens section shaped in an approximate circle and including a flange section; and a connecting section integrally provided to the lens section. The objective lens satisfies the following conditional formulas:0.5≦≦2.0, 0.3≦1.7