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:
Sep. 24, 1991
Filed:
May. 08, 1990
Akira Honma, Yokohama, JP;
Satoshi Takami, Saitama, JP;
Asahi Kogaku Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In a camera provided with a finder and a photographic lens, the focal length of the photographic lens being variable, there is provided a distance measuring device having a pair of optical elements at the front side of the camera, the optical axes of the pair of optical elements being different from the optical axis of the finder, and a line sensor having a pair of image-receiving areas for receiving a pair of images of a photographed object through the pair of optical elements. The respective image-receiving area of the line sensors are selected depending on the focal length of the photographic lens, which corresponds to the range at which an object to be photographed is located. In addition, there is provided an auxiliary light projector for projecting a pattern image to the object to be photographed, the image magnification of which being variable corresponding to the focal length of the photographic lens. Furthermore, the image-receiving areas are divided into a plurality of portions for better measuring the distances of the objects to be photographed, which are located at different depths in a three dimensional field of view.