发明授权
- 专利标题： Illumination optical system and image projection device
- 专利标题（中）： 照明光学系统和图像投影设备
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申请号： US14037578申请日： 2013-09-26
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公开(公告)号： US09104093B2公开(公告)日： 2015-08-11
- 发明人: Tetsuya Fujioka , Masamichi Yamada , Yasunari Mikutsu , Hideo Kanai , Satoshi Tsuchiya , Naoyuki Ishikawa , Motohisa Ikeda
- 申请人： Tetsuya Fujioka , Masamichi Yamada , Yasunari Mikutsu , Hideo Kanai , Satoshi Tsuchiya , Naoyuki Ishikawa , Motohisa Ikeda
- 申请人地址： JP Tokyo
- 专利权人： RICOH COMPANY, LIMITED
- 当前专利权人： RICOH COMPANY, LIMITED
- 当前专利权人地址： JP Tokyo
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： JP2012-235824 20121025
- 主分类号： G03B21/14
- IPC分类号： G03B21/14 ; G03B3/00 ; G02B7/02 ; H04N9/31
摘要：
An illumination optical system includes a lens unit that is arranged on a path of an emitted light to an image forming element for forming an image; a holding unit that holds the lens unit; and an elastic body that is attached to the holding unit, and has integrally-formed first and second parts, the first part being biased in a direction of an optical axis of the light to press the lens unit, and the second part being biased in a direction perpendicular to the direction of the optical axis to press the lens unit.
公开/授权文献
- US20140118706A1 ILLUMINATION OPTICAL SYSTEM AND IMAGE PROJECTION DEVICE 公开/授权日：2014-05-01
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