Invention Grant
- Patent Title: Two-dimensional light scanning apparatus
- Patent Title (中): 二维光扫描装置
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Application No.: US13395012Application Date: 2011-01-26
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Publication No.: US08358326B2Publication Date: 2013-01-22
- Inventor: Yoshihiro Hanada
- Applicant: Yoshihiro Hanada
- Applicant Address: JP Kanagawa
- Assignee: Pioneer Corporation
- Current Assignee: Pioneer Corporation
- Current Assignee Address: JP Kanagawa
- Agency: Young & Thompson
- International Application: PCT/JP2011/051496 WO 20110126
- International Announcement: WO2012/101782 WO 20120802
- Main IPC: B41J15/14
- IPC: B41J15/14 ; B41J27/00 ; H04N1/04

Abstract:
A two-dimensional light scanning apparatus includes: a deflector to drive at a resonance frequency in a main scanning direction and a sub-scanning direction different from the main scanning direction; a position sensor to detect a scanning position of the deflector; a resonance frequency predicting part to predict the resonance frequency of the deflector; and a deflector drive control part to: for drawing a Lissajous figure in which scanning trajectories of the deflector do not overlap with each other for one frame, store a plurality of pairs of respective frequency ratios of driving signals in the sub-scanning direction to driving signals in the main scanning direction, and respective phases of the driving signals in the sub-scanning direction with respect to the driving signals in the main scanning direction; select one pair of a frequency ratio and a phase; and control the deflector with a driving signal.
Public/Granted literature
- US20120224235A1 TWO-DIMENSIONAL LIGHT SCANNING APPARATUS Public/Granted day:2012-09-06
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