发明名称 Aperture element for a video projector and a video projector using the aperture element
摘要 <p>A reflecting portion is formed on a periphery of an opening portion 20 of an aperture element for a video projector. The reflecting portion 21 reflects a portion of the illumination light illuminating a reflecting type display element, which is other than a necessary portion, for expanding and projecting an image information by a projecting lens to an area outside an incident area of the projecting lens, such that the light portion is not incident on the projecting lens.</p>
申请公布号 EP1211901(A2) 申请公布日期 2002.06.05
申请号 EP20010309053 申请日期 2001.10.25
申请人 NEC VIEWTECHNOLOGY, LTD. 发明人 MAKITA, KAZUYA
分类号 G02F1/13;G02B27/00;G02F1/1335;G02F1/13357;G03B21/00;G03B21/14;H04N5/74;H04N9/31;(IPC1-7):H04N9/31 主分类号 G02F1/13
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