发明授权
- 专利标题： Optical scanning device and image forming apparatus
- 专利标题（中）： 光学扫描装置和图像形成装置
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申请号： US12534896申请日： 2009-08-04
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公开(公告)号： US08373736B2公开(公告)日： 2013-02-12
- 发明人: Hiroyoshi Funato , Kazunori Bannai , Daisuke Imaki , Yoshinori Hayashi , Makoto Hirakawa
- 申请人： Hiroyoshi Funato , Kazunori Bannai , Daisuke Imaki , Yoshinori Hayashi , Makoto Hirakawa
- 申请人地址： JP Tokyo
- 专利权人： Ricoh Company, Ltd.
- 当前专利权人： Ricoh Company, Ltd.
- 当前专利权人地址： JP Tokyo
- 代理机构： Dickstein Shapiro LLP
- 优先权： JP2008-202498 20080806; JP2009-163250 20090710
- 主分类号： B41J15/14
- IPC分类号： B41J15/14 ; B41J27/00
摘要：
P-polarized light beam passing through an fθ lens passes through a polarization beam splitter, is converted into S-polarized light beam by a quarter-wave plate and a reflecting mirror, re-enters the polarization beam splitter, and is reflected at the polarization beam splitter in the −Z direction. An optical path of a light beam between a polygon mirror and the fθ lens, between the fθ lens and the polarization beam splitter, between the polarization beam splitter and the quarter-wave plate, between the quarter-wave plate and a reflecting mirror, between the reflecting mirror and the quarter-wave plate, and between the quarter-wave plate and the polarization beam splitter are in the same plane.
公开/授权文献
- US20100034563A1 OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS 公开/授权日：2010-02-11
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