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:
Jan. 19, 1988
Filed:
Mar. 20, 1986
Applicant:
Inventors:
Assignee:
Canon Kabushiki Kaisha, , US;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354403 ; 354402 ;
Abstract
In a distance measuring device which has a semiconductor position sensor or the like employed as a light receiving element and which produces two different signals corresponding to the incident angles of a light coming from an object, the signals from the light receiving element are supplied, one after another, to a dual-slope type integrator such as a Miller integrator. A length of time required for reverse integration of the dual-slope type integrator is measured. Distance to the object is computed on the basis of the measured time.