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:
Oct. 22, 2002
Filed:
Feb. 02, 2001
Masataka Ide, Hachioji, JP;
Hisayuki Matsumoto, Hino, JP;
Takeshi Kindaichi, Hachioji, JP;
Koichi Nakata, Kokubunji, JP;
Olympus Optical Co., Ltd., , JP;
Abstract
This invention is an inexpensive distance measuring device having short lag time, configured so as to have a pair of light receiving regions at positions of focal points of a pair of image forming optical systems, comprising functions for dividing the light receiving regions and for monitoring the integration control for each divided light receiving region, also comprising an AF area sensor capable of performing pre-integration operations while causing strobe light to be emitted, and a microcomputer that, according to object field luminance distributions obtained from pre-integration results of the AF area sensor and to the focal length value of the photographic lens, divides the light receiving regions of the AF area sensor into respective pluralities, causes final integration operations to be performed while monitoring the integration control in each of the divided light receiving regions, and performs ranging computations based on data obtained for each light receiving region, capable of performing appropriate integration control over the entirety of a wide-range ranging region.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile