发明名称 |
Transmission projection screen and method of manufacturing same |
摘要 |
The projection screen has a transparent substrate having a front surface which is provided with mutually parallel ribs. Light-absorbing particles 7 whose size is 20 to 75% of the width of the grooves measured halfway the depth of these grooves, are disposed at the bottom of the grooves 4 between the ribs 2. The particles are fixed by means of a glue layer 6.
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申请公布号 |
US4660930(A) |
申请公布日期 |
1987.04.28 |
申请号 |
US19860844052 |
申请日期 |
1986.03.26 |
申请人 |
U. S. PHILIPS CORPORATION |
发明人 |
VAN DER HOORN, GUSTAAF H. A.;VAN DER STAAK, CASPERT G. I.;LAMBERTS, JOSEPH J. M.;SCHMITZ, JOHANNES H. A. |
分类号 |
G03B21/62;(IPC1-7):G03B21/60 |
主分类号 |
G03B21/62 |
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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