发明申请
- 专利标题： ILLUMINATION SYSTEM
- 专利标题（中）： 照明系统
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申请号： US11577054申请日： 2005-10-11
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公开(公告)号： US20090201469A1公开(公告)日： 2009-08-13
- 发明人: Michel Cornelis Josephus Marie Vissenberg , Marcellinus Petrus Carolus Michael Krijn
- 申请人： Michel Cornelis Josephus Marie Vissenberg , Marcellinus Petrus Carolus Michael Krijn
- 申请人地址： NL EINDHOVEN
- 专利权人： KONINKLIJKE PHILIPS ELECTRONICS, N.V.
- 当前专利权人： KONINKLIJKE PHILIPS ELECTRONICS, N.V.
- 当前专利权人地址： NL EINDHOVEN
- 优先权： EP04105157.4 20041019
- 国际申请： PCT/IB2005/053336 WO 20051011
- 主分类号： G03B21/28
- IPC分类号： G03B21/28 ; G03B21/14
摘要：
The present invention relates to an illumination system (10, 50) for a projection display device. The system comprises an integrator arrangement (14, 58) having at least one entrance aperture (16, 64), a light source (24, 54), and means (26, 56, 61) for directing light from the light source towards the at least one entrance aperture. The illumination system is characterized by a retro-reflector (34, 66) being arranged directly adjacent to said at least one entrance aperture. One advantage offered by the invention is that the efficiency of use of lumen output from the light source is increased. The invention also relates to a projection display device (80) comprising such illumination system.
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