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. 16, 2011
Filed:
Dec. 18, 2007
Wyatt Davis, Bothell, WA (US);
Gregory T. Gibson, Snohomish, WA (US);
Hakan Urey, Istanbul, TR;
Thomas W. Montague, Mercer Island, WA (US);
Bin Xue, Mukilteo, WA (US);
John Lewis, Bellevue, WA (US);
Wyatt Davis, Bothell, WA (US);
Gregory T. Gibson, Snohomish, WA (US);
Hakan Urey, Istanbul, TR;
Thomas W. Montague, Mercer Island, WA (US);
Bin Xue, Mukilteo, WA (US);
John Lewis, Bellevue, WA (US);
Microvision, Inc., Redmond, WA (US);
Abstract
Embodiments relate to a MEMS device including a scanner rotatable about at least one rotation axis, with the scanner having a characteristic resonant frequency. According to one embodiment, the MEMS device includes drive electronics operable to generate a drive signal that causes the scanner to oscillate at an operational frequency about the at least one rotation axis. The drive signal has a drive frequency selected to be about equal to the characteristic resonant frequency or a sub-harmonic frequency of the characteristic resonant frequency. According to another embodiment, the drive electronics are operable to generate a drive signal having a plurality of drive-signal pulses that moves the scanner at an operational frequency and sensing electronics are operable to sense a position of the scanner only when the drive-signal pulses of the drive signal are not being transmitted by the drive electronics. The MEMS device embodiments may be incorporated in scanned beam imagers, endoscopes, and displays.