Invention Grant
- Patent Title: Optical scanning apparatus, an image formation apparatus, and a phase modulation method
- Patent Title (中): 光学扫描装置，图像形成装置和相位调制方法
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Application No.: US11710907Application Date: 2007-02-27
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Publication No.: US08217978B2Publication Date: 2012-07-10
- Inventor: Taku Amada , Tomohiro Nakajima , Akihisa Itabashi , Seizo Suzuki
- Applicant: Taku Amada , Tomohiro Nakajima , Akihisa Itabashi , Seizo Suzuki
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Dickstein Shapiro LLP
- Priority: JP2006-050172 20060227
- Main IPC: B41J2/47
- IPC: B41J2/47
Abstract:
An optical scanning apparatus, an image formation apparatus, and a phase modulation method are disclosed. The optical scanning apparatus includes a liquid crystal device for deflecting an optical beam irradiated by a semiconductor laser. The driving voltages for the liquid crystal device are controlled based on, e.g., the temperature of the liquid crystal device so that degradation of the diameter of a spot of the optical beam due to wavefront aberration is prevented.
Public/Granted literature
- US20080204852A1 Optical scanning apparatus, an image formation apparatus, and a phase modulation method Public/Granted day:2008-08-28
Information query
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