- 专利标题: Projection device and projection system
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申请号: US15348700申请日: 2016-11-10
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公开(公告)号: US09690084B2公开(公告)日: 2017-06-27
- 发明人: Yohei Takano
- 申请人: Yohei Takano
- 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: Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权: JP2014-128676 20140623; JP2015-018000 20150130
- 主分类号: G02B17/08
- IPC分类号: G02B17/08 ; G03B21/28 ; G03B21/14 ; G02B13/16 ; G03B21/56
摘要:
A projection device to magnify and project, on a screen, an image displayed at an image display element, includes: a dioptric system including at least one positive lens and at least one negative lens; and a reflection optical system having at least one reflection optical element.
公开/授权文献
- US20170059836A1 PROJECTION DEVICE AND PROJECTION SYSTEM 公开/授权日:2017-03-02
信息查询
IPC分类:
G | 物理 |
G02 | 光学 |
G02B | 光学元件、系统或仪器 |
G02B17/00 | 有或无折射元件的具有反射面的系统 |
G02B17/08 | .折反射系统 |