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. 11, 1993
Filed:
Jun. 21, 1991
Richard E Albrecht, Honeyoye Falls, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A camera having a sensor array, a lens, and shutter blades, for focusing the lens in preparation for exposing a frame of photographic film, comprises a means for oscillating the shutter blades, separately, between open and closed positions to expose said sensor array with image light passing through corresponding pupils of the lens. A control means, responsive to said oscillating means, controls the sensor array to sample image light received through the corresponding pupils. A comparing means compares the sensed image light of the pupils with each other and produces a focus adjustment signal representative of a direction of focus error. Lastly, a focusing means, responsive to said focus adjustment signal, focuses said lens according to the focus error.