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:
Dec. 07, 1982
Filed:
Mar. 18, 1981
Kenneth C Kiesel, Wayland, MA (US);
Polaroid Corporation, Cambridge, MA (US);
Abstract
A focusing system and method for a photographic camera providing an automatic adjustment in the focus setting of the camera lens with aperture size to exploit the increased depth of focus available with a reduction in aperture size. In the illustrated embodiment, the aperture size is determined in accordance with scene light level, and the focus setting of the lens for a given camera/subject distance, as determined by an acoustical range finder, is adjusted automatically one or more positional increments toward the infinity focus setting of the lens to shift the in-focus field of the lens farther from the camera, in response to available subject illumination.