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. 23, 2008
Filed:
Apr. 15, 2004
Applicants:
Marshall Thomas Depue, San Mateo, CA (US);
Dale W. Schroeder, Scotts Valley, CA (US);
Tong Xie, San Jose, CA (US);
Inventors:
Marshall Thomas DePue, San Mateo, CA (US);
Dale W. Schroeder, Scotts Valley, CA (US);
Tong Xie, San Jose, CA (US);
Assignee:
Avago Technologies General IP (Singapore) Pte. Ltd., Singapore, SG;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 3/33 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical device and methods thereof are described. The device includes a first light source adapted to emit light onto a surface, and a detector adapted to receive light reflected from the surface. The reflected light produces a speckle pattern. The distance between the optical device and the surface can be measured using a quantifiable attribute associated with the speckle pattern.