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. 04, 2017
Filed:
May. 21, 2015
Applicant:
Microvision, Inc., Redmond, WA (US);
Inventors:
Patrick J. McVittie, Seattle, WA (US);
Jonathan A. Morarity, Seattle, WA (US);
Damon M. Domjan, Redmond, WA (US);
Assignee:
Microvision, Inc., Redmond, WA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 26/08 (2006.01); G02B 26/10 (2006.01); G02B 27/01 (2006.01);
U.S. Cl.
CPC ...
G02B 26/0841 (2013.01); G02B 26/10 (2013.01); G02B 27/0101 (2013.01);
Abstract
A drive circuit for a resonant system provides an excitation signal having an amplitude and a phase. The resonant system provides a feedback signal representing an oscillation amplitude. The amplitude of the excitation signal is reduced for a substantially constant feedback signal amplitude by modifying the excitation signal phase.