发明授权
- 专利标题: Projection-type display apparatus
- 专利标题(中): 投影型显示装置
-
申请号: US12644731申请日: 2009-12-22
-
公开(公告)号: US08469525B2公开(公告)日: 2013-06-25
- 发明人: Kuniko Kojima , Hayato Takeuchi , Tomohiro Sasagawa
- 申请人: Kuniko Kojima , Hayato Takeuchi , Tomohiro Sasagawa
- 申请人地址: JP Tokyo
- 专利权人: Mitsubishi Electric Corporation
- 当前专利权人: Mitsubishi Electric Corporation
- 当前专利权人地址: JP Tokyo
- 代理机构: Birch, Stewart, Lolasch & Birch, LLP
- 优先权: JP2008-331424 20081225
- 主分类号: G03B21/20
- IPC分类号: G03B21/20
摘要:
A projection-type display apparatus that projects an image on a screen and performs image display includes at least one laser source that emits a coherent light beam, an illuminating optics that propagates the light beam emitted from the laser source into a predetermined optical path to guide the light beam to the screen, a reflective optical modulator that forms the image to be displayed on the screen on an illuminated surface illuminated by the light beam guided by the illuminating optics, and a projection optics that magnifies and projects the image formed on the illuminated surface of the reflective optical modulator on the screen. The illuminating optics includes a diffusion device, which diffuses the propagated light beam, and is arranged on a light propagation path near a conjugated position with the reflective optical modulator.
公开/授权文献
- US20100165301A1 PROJECTION-TYPE DISPLAY APPARATUS 公开/授权日:2010-07-01