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:
Sep. 19, 1989
Filed:
Jan. 19, 1988
Applicant:
Inventors:
Masashi Ito, Osaka, JP;
Toshiki Matsuno, Takarazuka, JP;
Hiroyuki Nakamura, Kobe, JP;
Hiroshi Yasuda, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G02B / ;
U.S. Cl.
CPC ...
369112 ; 369110 ; 369 45 ; 369118 ; 350448 ; 250201 ;
Abstract
The movable range of an objective of an optical pickup device used in optical disc reproducing apparatus is increased and the size of the device is reduced by moving the objective solely or in combination with a collimating lens system in that range. The objective and collimating lens systems are integrated into a lens holder and located in the path of a diverging beam of a semiconductor laser.