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. 01, 1990
Filed:
May. 04, 1989
Tomoya Kitajima, Kawasaki, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A distance measuring device of a triangulation system type for an automatic focusing camera having a photographing optical system. The device comprises a distance measuring unit for measuring a distance to an object to be focused through the photographing optical system. The unit is comprised of a pair of image detecting elements each for detecting an image of the object, and a pair of distance-measuring optical systems each for imaging the object onto one of the image detecting elements. A drive mechanism is provided for pivotally moving the distance-measuring optical systems and the image detecting elements of the unit integrally in a plane parallel to each of optical axes of distance-measuring optical systems, without causing any relative movement of the distance-measuring optical systems and the image detecting elements with respect to each other. A control mechanism is provided for controlling the drive mechanism so as to stop pivotal movement of the unit at each of at least two or more different pivotal angular positions thereof to thereby enable measurement of distance to each of at least two or more different points appearing in the field of view of the camera.