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. 19, 1987
Filed:
Oct. 18, 1985
Applicant:
Inventors:
Noboru Arai, Ashigara-Kami, JP;
Hidetoshi Shinada, Ashigara-Kami, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
250235 ; 358293 ;
Abstract
An optical linear encoder for converting scanning light beams incident thereupon into a series of pulsatory light comprising light transmission parts for passing through the scanning light beams and light non-transmission parts for blocking transmission of the scanning light beams. The light non-transmission parts are alternately arranged with said light transmission parts in predetermined intervals that are determined by the amount of distortion inherently occurring in an optical system through which the scanning light beams travel.