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:
Aug. 10, 1982
Filed:
Feb. 07, 1980
Applicant:
Inventors:
Masamichi Tateoka, Kawasaki, JP;
Takao Tsuji, Kawasaki, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B / ;
U.S. Cl.
CPC ...
350-65 ; 350474 ; 350479 ;
Abstract
A light beam scanning device of a construction, in which an image forming scanning optical system is provided with an expedient for preventing spot intensity of a light beam on a scanning surface from falling off at a peripheral region of a scanning object in comparison with its center part, and a light beam modulator is provided with an expedient for making constant a length of a single dot drawn by a beam spot with respect to one modulating signal on the scanning surface.
Tateoka, Masamichi. (1982). Light beam scanning device with constant spot intensity and scan speed (U.S. Patent No. 4343531). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4343531
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile