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:
Aug. 03, 2010
Filed:
Oct. 23, 2008
Jacques Gollier, Painted Post, NY (US);
Martin Hai HU, Painted Post, NY (US);
David August Sniezek Loeber, Horseheads, NY (US);
Dragan Pikula, Horseheads, NY (US);
Daniel Ohen Ricketts, Corning, NY (US);
Jacques Gollier, Painted Post, NY (US);
Martin Hai Hu, Painted Post, NY (US);
David August Sniezek Loeber, Horseheads, NY (US);
Dragan Pikula, Horseheads, NY (US);
Daniel Ohen Ricketts, Corning, NY (US);
Corning Incorporated, Corning, NY (US);
Abstract
The present invention relates generally to semiconductor lasers and laser projection systems. According to one embodiment of the present invention, a method of correcting output power variations in a semiconductor laser is provided. According to the method, an output power feedback loop is utilized to generate optical intensity feedback signals representing actual output power of the laser source for discrete portions V, V, . . . Vof the image signal. Error signals E, E, . . . Eare generated representing the degree to which actual projected output power varies from a target projected output power for the discrete portions V, V, . . . Vof the image signal. These error signals E, E, . . . Eare utilized to apply corrected control signals G', G′, . . . G′ to the gain section of the semiconductor laser for projection of compatible discrete portions V′, V′, . . . V′ of the image signal. According to another embodiment of the present invention, a system is provided for generating a projected laser image.