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. 25, 1992
Filed:
Dec. 27, 1990
Applicant:
Inventors:
Shoji Goto, Osaka, JP;
Akihiro Sakata, Osaka, JP;
Hiroshi Yamamoto, Osaka, JP;
Tetsuo Saimi, Osaka, JP;
Kazuo Momoo, Osaka, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
359831 ; 359819 ; 359896 ; 359823 ;
Abstract
An optical head for recording and reproducing information on an optical disk includes a box-like cover carrying thereon a semiconductor laser unit and a detector, and a substantially planar base on which various optical components are bonded, the base being made of the same material as the box-like cover and secured to the box-like cover to close an open end of the latter. By the use of the planar base, the optical components and the base can be bonded efficiently with utmost ease.