| 发明名称 |
Combined heat filter and condenser lens, a projection type apparatus using such, and a method for fabricating it |
| 摘要 |
An optical component including: a substrate made from heat absorptive glass having a front surface and a rear surface, at least one of said surfaces being a crenulate surface having optical power.
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| 申请公布号 |
US6778326(B1) |
申请公布日期 |
2004.08.17 |
| 申请号 |
US19970855556 |
申请日期 |
1997.05.13 |
| 申请人 |
EASTMAN KODAK COMPANY |
发明人 |
RICHARDS DAVID A. |
| 分类号 |
G02B3/00;G02B27/44;G03B21/18;G03B21/20;(IPC1-7):G02B27/44 |
主分类号 |
G02B3/00 |
| 代理机构 |
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代理人 |
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