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. 30, 1995
Filed:
May. 13, 1994
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
369112 ; 369119 ; 369 4414 ; 369 54 ;
Abstract
An optical system for an optical information recording/reproduction apparatus, includes a light source, an objective lens for focusing a light beam from the light source on a recording medium, a beam splitter arranged between the light source and the objective lens, a detector for detecting a light beam split by the beam splitter, a galvano mirror arranged between the objective lens and the beam splitter, the galvano mirror having an opening, and a sensor for receiving the light beam from the light source via the opening.