发明名称 |
PROJECTION TYPE DISPLAY |
摘要 |
<p>In a projection display device 1, emergent light from an illumination optical system 80 is diffused by microlenses 101 provided in a liquid crystal light valve 100R. Emergent light from the liquid crystal light valve 100R diffused by these microlenses 101 is efficiently drawn into a projection optical system 60 whose f-number is set to be less than the f-number of the illumination optical system 80. As a result, it is possible to prevent light utilization efficiency from being deteriorated due to light diffusion by the microlenses 101. Consequently, it is possible to obtain a bright projection image in a projection display device in which a liquid crystal light valve having microlenses is incorporated. <IMAGE></p> |
申请公布号 |
EP0952473(A1) |
申请公布日期 |
1999.10.27 |
申请号 |
EP19980947806 |
申请日期 |
1998.10.09 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
YAJIMA, AKITAKA, SEIKO EPSON CORPORATION;OGAWA, YASUNORI;ITO, JIRO |
分类号 |
G03B21/14;G02B27/00;G02B27/18;H04N5/74;H04N9/31;(IPC1-7):G02B27/18 |
主分类号 |
G03B21/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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