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:
Sep. 18, 2007
Filed:
Oct. 07, 2005
Joseph F. Arnold, Palm Beach Gardens, FL (US);
John F. Carver, Palm City, FL (US);
Trent G. Francis, Hobe Sound, FL (US);
Richard D. Irving, Palm Beach Gardens, FL (US);
George W. Mcclurg, Jensen Beach, FL (US);
Walter G. Scott, North Palm Beach, FL (US);
Joseph F. Arnold, Palm Beach Gardens, FL (US);
John F. Carver, Palm City, FL (US);
Trent G. Francis, Hobe Sound, FL (US);
Richard D. Irving, Palm Beach Gardens, FL (US);
George W. McClurg, Jensen Beach, FL (US);
Walter G. Scott, North Palm Beach, FL (US);
Cross Match Technologies, Inc., Palm Beach Gardens, FL (US);
Abstract
Systems and methods for illuminating a platen are provided. A hybrid illumination system uses both diffusion and collimation to efficiently provide a flat, uniform illumination at a platen. One or more diffusers are disposed between the illumination source array and a collimating lens. An illumination system is provided which uses diffused light to illuminate a platen in a print scanner. The illumination system has an illumination source array and a light wedge. The light wedge reflects light internally which makes the illumination even more diffuse. Sources are divided into at least a center region and a perimeter region. The density of sources provided in the perimeter region is greater than in the center region to correct for natural light falloff in the illumination system. Intensity control can be performed individually or in groups.