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 |
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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