Invention Grant
US08810880B2 Optical scan unit, image projector including the same, vehicle head-up display device, and mobile phone
有权
光学扫描单元，包括相机的图像投影仪，车辆平视显示装置和手机
- Patent Title: Optical scan unit, image projector including the same, vehicle head-up display device, and mobile phone
- Patent Title (中): 光学扫描单元，包括相机的图像投影仪，车辆平视显示装置和手机
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Application No.: US13054739Application Date: 2009-06-16
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Publication No.: US08810880B2Publication Date: 2014-08-19
- Inventor: Yukiko Hamano , Hiroshi Akiyama , Yoshitaka Takahashi
- Applicant: Yukiko Hamano , Hiroshi Akiyama , Yoshitaka Takahashi
- Applicant Address: JP Tokyo
- Assignee: Ricoh Company, Ltd.
- Current Assignee: Ricoh Company, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
- Priority: JP2008-189993 20080723; JP2009-077949 20090327
- International Application: PCT/JP2009/061271 WO 20090616
- International Announcement: WO2010/010773 WO 20100128
- Main IPC: G02B26/08
- IPC: G02B26/08
Abstract:
An optical scan unit (10) is configured to include a light source (11), a divergent light conversion element (12) having such positive power as to convert divergent light from the light source (11) into convergent light to form a spot on a projection plane, an optical deflector (13) deflecting a light beam from the divergent light conversion element (12) to a first scan direction and a second scan direction which is orthogonal to the first scan direction, and a deflection angle conversion element 14 (14) having such negative power as to convert a deflection angle of the light deflected by the optical deflector (13).
Public/Granted literature
- US20110128602A1 OPTICAL SCAN UNIT, IMAGE PROJECTOR INCLUDING THE SAME, VEHICLE HEAD-UP DISPLAY DEVICE, AND MOBILE PHONE Public/Granted day:2011-06-02
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