Invention Grant
- Patent Title: Oscillator device, optical deflector and driving signal generating method
- Patent Title (中): 振荡器,光偏转器和驱动信号发生方法
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Application No.: US12119616Application Date: 2008-05-13
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Publication No.: US07973991B2Publication Date: 2011-07-05
- Inventor: Ikuo Watanabe
- Applicant: Ikuo Watanabe
- Applicant Address: JP Tokyo
- Assignee: Canon Kabushiki Kaisha
- Current Assignee: Canon Kabushiki Kaisha
- Current Assignee Address: JP Tokyo
- Agency: Fitzpatrick, Cella, Harper & Scinto
- Priority: JP2007-131353 20070517
- Main IPC: G02B26/08
- IPC: G02B26/08

Abstract:
An oscillator device includes an oscillation system 115 having a plurality of oscillators and a plurality of torsion springs, a supporting member for supporting the oscillation system 115, driving members 114 and 1152, a signal output device 121 and 122, and a drive control unit 101-113, 123 and 124, wherein the driving member drives the oscillation system 115 so that the oscillator provides oscillation presented by an equation including the sum of a plurality of periodic functions, wherein the signal output device produces a signal corresponding to the displacement of the oscillator, and wherein the drive control unit controls the driving member based on an output signal of the signal output device and by use of a driving signal which is expressed by an equation including the sum of a plurality of periodic functions, the drive control unit including a driving signal generation circuit 109 for generating a driving signal using a trigonometric function table 110.
Public/Granted literature
- US20080285102A1 OSCILLATOR DEVICE, OPTICAL DEFLECTOR AND DRIVING SIGNAL GENERATING METHOD Public/Granted day:2008-11-20
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