发明名称 |
Reflection type projection optical system |
摘要 |
A bright reflection type projection optical system is used for projecting onto a screen under magnification a luminous flux carrying image information from a light valve driven by an image signal, while favorably correcting aberration. The reflection type projection optical system comprises, successively from the enlargement side, a first mirror having a positive power, a second mirror having a negative power, and a third mirror having a positive power.
|
申请公布号 |
US6626542(B2) |
申请公布日期 |
2003.09.30 |
申请号 |
US20020084973 |
申请日期 |
2002.03.01 |
申请人 |
FUJI PHOTO OPTICAL CO., LTD. |
发明人 |
BABA TOMOYUKI;YAMAMOTO CHIKARA |
分类号 |
G02B17/08;G02B17/06;G02B27/18;G03B21/28;(IPC1-7):G03B21/28;G02B5/10 |
主分类号 |
G02B17/08 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|