发明名称 |
Display optical unit and display apparatus |
摘要 |
A display optical unit and apparatus in which the optical axis of a projection lens is shifted from the optical axis of an illumination unit and light splitter. The projection lens is attachable and detachable in a direction in which the optical axes are shifted from each other. A light valve or a polarizer is cooled by cooling winds blown by a cooling device to the light valve or polarizer through a plurality of wind supply openings are arranged in directions different from one another and within the range of 45 degrees to 315 degrees so as to enable cooling of the display optical unit.
|
申请公布号 |
US6334686(B1) |
申请公布日期 |
2002.01.01 |
申请号 |
US19990392563 |
申请日期 |
1999.09.09 |
申请人 |
HITACHI, LTD. |
发明人 |
SHIRAISHI MIKIO;KAKU NOBUYUKI;ABE FUKUYASU;FUSE KENJI;MASUOKA NOBUO;MORITA TATSUO |
分类号 |
G02F1/13;G03B21/16;H04N5/74;(IPC1-7):G03B21/16;G03B21/14 |
主分类号 |
G02F1/13 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|