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. 20, 1997
Filed:
Apr. 20, 1994
Applicant:
Inventor:
Mamoru Tanaka, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J / ;
U.S. Cl.
CPC ...
347134 ; 347256 ;
Abstract
A laser light radiation device has a light source for emitting laser light which is modulated according to an image signal, a collimator lens for collimating the laser light emitted from the light source, and a polygonal mirror for deflecting the laser beam emerging from the collimator lens. The device further has a diffraction grating in a laser optical path between the collimator lens and the polygonal mirror.