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:
Nov. 22, 2011
Filed:
Mar. 04, 2010
Lothar Muench, Dettingen unter Teck, DE;
Lothar Muench, Dettingen unter Teck, DE;
Digital Imaging Systems GmbH, Kirchheim/Teck-Nabern, DE;
Abstract
An image is focused onto an image sensor array by efficient movement of an adjustable focus lens by a lens focus motor. A minimum of three focus positions is required to determine an estimated best focus position of the lens focus motor. After which a sweep of the focus positions surrounding the estimated best focus position is performed to verify and determine the best actual focus position of the lens focus motor. A sharpness value of the image being focused comprising a Sobel edge detection or other detections means provide sharpness data to evaluate image sharpness at various lens focus motor positions.