发明申请
- 专利标题： Optical scanning device, image forming apparatus and liquid crystal device driving method
- 专利标题（中）： 光学扫描装置，成像装置和液晶装置的驱动方法
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申请号： US11032257申请日： 2005-01-11
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公开(公告)号： US20050179971A1公开(公告)日： 2005-08-18
- 发明人: Taku Amada , Seizo Suzuki , Akihisa Itabashi , Hiroyuki Suhara , Mitsuo Suzuki
- 申请人： Taku Amada , Seizo Suzuki , Akihisa Itabashi , Hiroyuki Suhara , Mitsuo Suzuki
- 优先权： JP2004-006820 20040114; JP2004-050054 20040225; JP2004-105468 20040331
- 主分类号： G02B26/12
- IPC分类号： G02B26/12 ; G02B26/08
摘要：
An optical scanning device includes: a light source; a deflector deflecting light beam from the light source; a coupling lens carrying out coupling of the light beam from the light source; a first optical system leading the light beam from the coupling lens to the deflector; a scanning optical system leading the light beam deflected by the deflector to a to-be-scanned surface; and a phase-modulatable liquid crystal device disposed on a light path lying from the light source through the to-be-scanned surface and driven by an electric signal, wherein: the first optical system at least comprises an optical device having: a surface having power positive in a sub-scanning direction; and a surface having power positive in a main scanning direction.