Invention Grant
- Patent Title: Scanning mirror control
- Patent Title (中): 扫描镜控制
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Application No.: US12235500Application Date: 2008-09-22
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Publication No.: US07952783B2Publication Date: 2011-05-31
- Inventor: Steve Holmes , Clint Charles Rollins , Margaret K. Brown , Michael L. Schaaf , Bruce C. Rothaar , Robert J. Jackson , Lifford McLauchlan , Mehrube Mehrubeoglu , Gregory Schneider
- Applicant: Steve Holmes , Clint Charles Rollins , Margaret K. Brown , Michael L. Schaaf , Bruce C. Rothaar , Robert J. Jackson , Lifford McLauchlan , Mehrube Mehrubeoglu , Gregory Schneider
- Applicant Address: US WA Redmond
- Assignee: Microvision, Inc.
- Current Assignee: Microvision, Inc.
- Current Assignee Address: US WA Redmond
- Agent Kevin D. Wills
- Main IPC: G02B26/08
- IPC: G02B26/08

Abstract:
A scanning beam projection system includes a scanning mirror having a fast-scan axis and a slow-scan axis. Movement on the slow-scan axis is controlled by a slow-scan scanning mirror control system. The control system receives position information describing angular displacement of the mirror. An outer loop of the control system operates in the frequency domain and determines harmonic drive coefficients for a scanning mirror drive signal. An inner loop of the control system operates in the time domain and compensates for a scanning mirror resonant vibration mode at a frequency within the frequency band occupied by the harmonic drive coefficients.
Public/Granted literature
- US20100073748A1 Scanning Mirror Control Public/Granted day:2010-03-25
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