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. 06, 1996
Filed:
Jan. 26, 1994
Applicant:
Inventor:
Shin Mogi, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 36 ;
Abstract
A laser unit includes a semiconductor laser tip mounted on a substrate of a material such as Si, a monitoring photodiode, and a laser driving integrated circuit, all of which are fixed to a base member of a material, such as metal, by soldering or the like. Further, a collimator lens is fixed to the base member by using, for example, ultraviolet ray hardening resin. The base member is provided with a step or slope portion, or a cut-away portion, formed at its laser-light-emission end, whereby the laser unit can be made compact and the distance between the semiconductor laser tip and the laser driving circuit can be shortened.