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:
Jul. 13, 1999
Filed:
Jun. 17, 1997
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A distance measuring apparatus in a lens-shutter type camera is provided with a photographic lens having variable focal length. The device includes a pair of image forming lenses each forming a subject image, a pair of line sensors on which the subject images are respectively formed through the pair of image forming lenses, the pair of line sensors each having a plurality of light receiving elements. The unit also includes a plurality of light receiving areas formed correspondingly on each of the pair of line sensors, the plurality of light receiving areas each including a predetermined number of the plurality of light receiving elements. The plurality of light receiving areas respectively receive different areas of a corresponding one of the subject images formed by the pair of image forming lenses, and each adjacent pair of light receiving areas of the plurality of light receiving areas overlap each other. A device for detecting a current focal length of the photographic lens, and a device for shifting at least one of the plurality of light receiving areas on each of the pair of line sensors in accordance with the current focal length detected by the detecting device areas provided. Each light receiving element converts received light into an electrical signal which is integrated to output image data.