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:
Apr. 30, 1985
Filed:
Feb. 24, 1982
West Electric Company, Ltd., Osaka, JP;
Abstract
In a distance measuring apparatus in accordance with the present invention, a light beam of a wide solid angle is projected on a photographic object by means of a strobo light source, and reflected rays are received by a photoelectric device array which has a predetermined number of photoelectric devices each with narrow directivity which are comparable to solid angles necessary to see the object from the photoelectric devices disposed with their optical axes at predetermined angular pitches. When the output of a photoelectric device, which is issuing maximum amplitude output, is selected by means of a maximum value detector circuit, and a distance signal is discriminated from background noises such as sun light or electric illumination light by passing through a differentiating circuit, and then being processed by a function circuit and fed to a lens driving system or indicator.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile