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:
Nov. 27, 2007
Filed:
Jul. 07, 2004
Shogo Horinouchi, Fukuoka, JP;
Takashi Haruguchi, Fukuoka, JP;
Taiichi Mori, Koga, JP;
Hideki Yoshinaka, Chikushino, JP;
Nobuyuki Tokubuchi, Saga, JP;
Shin Ishibashi, Fukuoka, JP;
Hitoshi Asahi, Kasuga, JP;
Shogo Horinouchi, Fukuoka, JP;
Takashi Haruguchi, Fukuoka, JP;
Taiichi Mori, Koga, JP;
Hideki Yoshinaka, Chikushino, JP;
Nobuyuki Tokubuchi, Saga, JP;
Shin Ishibashi, Fukuoka, JP;
Hitoshi Asahi, Kasuga, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
To provide an optical pickup device and optical disk device capable of realizing at least one of thickness reduction, size reduction and suppression against characteristic deterioration even where coping with various wavelengths of laser including a blue laser. An optical pickup device comprising light sources for respectively emitting a plurality of different wavelengths of light, unit structured for causing at least a part of the light emitted from the light sources to pass a same optical path; and focusing unit for focusing the light. The focusing unit includes at least first and second focusing parts, the first focusing part being to focus mainly a wavelength of light different from a wavelength of light to be mainly focused by the second focusing part.