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. 16, 1985
Filed:
Jun. 30, 1982
Daniel C Abbas, Webster, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Active distance detection is effected by (1) directing light through a lens to an object, from an emitter zone located at or proximate the lens focal plane, (2) sensing the amplitude of light reflected back through the lens from the object at two or more detection zones that are located respectively at different distances from the emitter zone and that are generally coplanar with the emitter zone in a plane substantially normal to the optical axis of the lens, and (3) comparing the amplitudes of object-reflected light at the detection zones in a manner determinative of the unique distance-from-emitter-zone versus reflected-light-amplitude curve of the object's distance.