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. 27, 1988
Filed:
Nov. 13, 1987
Applicant:
Inventor:
Toshitami Hara, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 357 19 ;
Abstract
A semiconductor laser apparatus comprising a plurality of laser elements comprising an array, a plurality of photodetector elements respectively corresponding to the plurality of laser elements, and a light shield member. Each laser element is adapted to generate a laser beam in two directions. Each photodetector element is adapted to receive a laser beam from a laser element. The light shield member prevents the light generated by each of the plurality of laser elements from entering photodetectors other than those to which they correspond.