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:
Jan. 20, 2009
Filed:
Aug. 25, 2003
Vladimir Gurevich, Stony Brook, NY (US);
Mark Krichever, Hauppauge, NY (US);
Bradley S. Carlson, Northport, NY (US);
Chinh Tan, Setauket, NY (US);
Vladimir Gurevich, Stony Brook, NY (US);
Mark Krichever, Hauppauge, NY (US);
Bradley S. Carlson, Northport, NY (US);
Chinh Tan, Setauket, NY (US);
Symbol Technologies, Inc., Holtsville, NY (US);
Abstract
A system and method utilizing the principles of axial chromatic aberration for auto-focusing an image onto an image sensor are provided. The system and method are particularly suitable for incorporation within an optical code reader. A signal processor analyzes data signals representative of the intensity or magnitude of wavelength components of an impinged image onto the image sensor for determining a value indicative of the focus quality of the impinged image. An actuator controls movement of a lens in accordance with the determination until obtainment of a desired focus quality. A decoder decodes the image having the desired focus quality.