Invention Grant
US08476569B2 Image projection device having a deflection section with a deflection control section for distortion correction and speed correction
失效
图像投影装置具有偏转部分,其具有用于失真校正和速度校正的偏转控制部分
- Patent Title: Image projection device having a deflection section with a deflection control section for distortion correction and speed correction
- Patent Title (中): 图像投影装置具有偏转部分,其具有用于失真校正和速度校正的偏转控制部分
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Application No.: US13059200Application Date: 2009-07-15
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Publication No.: US08476569B2Publication Date: 2013-07-02
- Inventor: Kenji Konno , Kenji Mizumoto
- Applicant: Kenji Konno , Kenji Mizumoto
- Applicant Address: JP Tokyo
- Assignee: Konica Minolta Opto, Inc.
- Current Assignee: Konica Minolta Opto, Inc.
- Current Assignee Address: JP Tokyo
- Agency: Cozen O'Connor
- Priority: JP2008-209883 20080818
- International Application: PCT/JP2009/062777 WO 20090715
- International Announcement: WO2010/021215 WO 20100225
- Main IPC: H01L27/00
- IPC: H01L27/00

Abstract:
An object is to provide a image projection device which has a small size but can project an image having a high image quality. To achieve the object, in an image projection device, a reflection part which reflects a light flux from a light source is, while being rotated around a first axis by non-resonance driving, rotated by resonance driving around a second axis which is substantially perpendicular to the first axis, and thereby the light flux is deflected in a two-dimensional direction. By controlling the rotation of the reflection part, a correction for suppressing an image distortion along one scanning direction on a projection surface, and a correction for keeping substantially constant a scanning speed of the light flux along the other scanning direction on the projection surface, are performed. Here, the relationship of 10°
Public/Granted literature
- US20110141441A1 IMAGE PROJECTION DEVICE Public/Granted day:2011-06-16
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