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. 27, 1996
Filed:
May. 16, 1995
Takashi Kawabata, Kamakura, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A distance measuring apparatus provided with a plurality of light-emitting units and a plurality of light-receiving units. The light emission period of each of the light-emitting units is changed over at each predetermined period interval. A plurality of light-receiving elements constituting each light-receiving unit are constructed so as to receive the reflected lights from a plurality of distance measurement fields of view on an object to be photographed in a plurality of distance measurement zones obtained by dividing a range to be measured into several blocks. The input signal from each of the light-receiving elements in each of the distance measurement zones is changed over in synchronism with the light emission period of the light-emitting units and the output signals for the respective distance measurement zones are compared, whereby a distance data indicative of the distance measurement zone most approximate to the object distance is put out.