发明名称 Rear projection screen and rear projection comprising such a screen.
摘要 <p>In a rear projection screen having a large horizontal viewing angle caused by the shape of the first light-spreading elements (51) provided at the front side of the plate (50) the color shift is corrected by providing second light-spreading elements (61) at the rear sside of the plate. The second light-spreading elements are aligned approximately parallel to the first light-spreading elements and have a pitch (p) which is considerably smaller than the pitch of the first light-spreading elements. This screen provides a good color correction while the first and the second light-spreading elements are formed in such a way that the screen can be manufactured on an industrial scale without any problem.</p>
申请公布号 EP0414313(A1) 申请公布日期 1991.02.27
申请号 EP19900202226 申请日期 1990.08.20
申请人 N.V. PHILIPS' GLOEILAMPENFABRIEKEN 发明人 VAN DE VEN, JOHANNES CORNELIS
分类号 H04N5/74;G03B21/62;H04N9/31 主分类号 H04N5/74
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