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:
Mar. 21, 1989
Filed:
Sep. 23, 1987
Applicant:
Inventors:
Jun Tokumitsu, Tokyo, JP;
Kenji Saito, Tokyo, JP;
Yuichi Handa, Tokyo, JP;
Nobuyoshi Tanaka, Tokyo, JP;
Hidetoshi Nojiri, Matsudo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06G / ; G06G / ;
U.S. Cl.
CPC ...
364841 ; 364807 ; 364845 ; 350 9614 ; 350 9616 ; 350358 ;
Abstract
In an optical operation apparatus, a light source emits a light intensity-modulated on the basis of a first electrical signal. A modulating device receives the light from the light source and intensity-modulates the light on the basis of the first signal, and a photoelectric converting device converts the light modulated by the modulating device into a second electrical signal. These functions are carried out by any of a number of different arrangements of filter elements, and electro-optical or acoustico-optical devices can be used for intensity modulation.