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, 1998
Filed:
Dec. 18, 1995
Kazuyuki Maeda, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An apparatus that measures the distance to an object by projecting light, receiving reflected light of the projected light through at least two light receiving devices disposed at different positions, and combining information from the two light receiving device to cancel, the influence of a change in the centroid position of the reflected light at the same distance. The apparatus has a signal processor performs a first processing operation for determining the distance to the object by combining information from the two light receiving devices, and a second processing operation for determining the distance to the object using information from only one of the two light receiving devices.