| 发明名称 |
Reflective projection screen with angled sidewalls |
| 摘要 |
A projection screen includes a plurality of passive elements each having a sidewall surrounding a surface, wherein said sidewall is configured to attenuate light.
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| 申请公布号 |
US7274508(B2) |
申请公布日期 |
2007.09.25 |
| 申请号 |
US20040966447 |
申请日期 |
2004.10.15 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
ALLEN WILLIAM J.;KOEGLER JOHN M.;GUPTA ANURAG;MANN LAWRENCE C. |
| 分类号 |
G03B21/60;G02B1/10;G02B5/136 |
主分类号 |
G03B21/60 |
| 代理机构 |
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