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:
Apr. 24, 2012
Filed:
Dec. 23, 2008
Applicants:
Margaret K. Brown, Seattle, WA (US);
Joel D. Hopkins, Sammamish, WA (US);
Jenchao J. Lin, Bothell, WA (US);
Lifford Mclauchlin, Corpus Christi, TX (US);
Inventors:
Margaret K. Brown, Seattle, WA (US);
Joel D. Hopkins, Sammamish, WA (US);
Jenchao J. Lin, Bothell, WA (US);
Lifford McLauchlin, Corpus Christi, TX (US);
Assignee:
Microvision, Inc., Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/13 (2006.01); H01S 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
The radiance of a laser is a function of drive current. The radiance is also a function of other factors, such as age and temperature. A laser projection device adjusts laser drive parameters using a gradient descent operation. The device parameters may be adjusted iteratively and periodically. The period may be shorter or longer than a scan line in a video image.