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:
Feb. 13, 2001
Filed:
Jan. 06, 1997
Applicant:
Inventors:
Shizuo Arai, Kanagawa, JP;
Yoshitaka Aoki, Kanagawa, JP;
Takakiyo Kanazawa, Kanagawa, JP;
Akio Matsuda, Kanagawa, JP;
Kiyoshi Ohmori, Kanagawa, JP;
Sunao Aoki, Kanagawa, JP;
Takatsugu Funawatari, Miyagi, JP;
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 3/302 ;
U.S. Cl.
CPC ...
G11B 3/302 ;
Abstract
An optical pickup device capable of irradiating laser beams on a signal recording surface of a magneto-optical disk is provided. The optical pickup device so provided includes a separate optical system whose moveable portion is reduced in weight in order to cope with high-speed access.