| 发明名称 |
Infra-red and ultraviolet filtration in projection systems |
| 摘要 |
A method of generating a projection beam for projecting an image includes collimating the projection beam and filtering infra-red or ultraviolet radiation from the projection beam after the projection beam has been collimated.
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| 申请公布号 |
US7137708(B2) |
申请公布日期 |
2006.11.21 |
| 申请号 |
US20040876363 |
申请日期 |
2004.06.23 |
| 申请人 |
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. |
发明人 |
GUPTA ANURAG |
| 分类号 |
G03B21/14;F21V7/00;G02B5/20;G02B27/09;G02F1/1335;G03B21/18;G03B21/20;G03B21/28;H04N5/74 |
主分类号 |
G03B21/14 |
| 代理机构 |
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代理人 |
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| 地址 |
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