发明名称 |
OPTICAL SYSTEM FOR REAR PROJECTION PICTURE DISPLAY APPARATUS |
摘要 |
An optical system for a rear projection picture display has reduced size while maintaining screen size. Two plane mirrors are provided along a light path between a picture display unit and a screen. The first plane mirror at a projection lens side is made of a reflecting polarizer and is located along a light path between the second plane mirror and the screen. The two plane mirrors are set in a relative angle so that the incident angle of the light traveling from the projection lens to the first plane mirror is large as compared with the incident angle of the light traveling from the second plane mirror to the first plane mirror. A polarizing plate is attached at the rear side of the screen.
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申请公布号 |
CA2141238(C) |
申请公布日期 |
2000.11.07 |
申请号 |
CA19952141238 |
申请日期 |
1995.01.27 |
申请人 |
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发明人 |
YAMAGISHI, SHIGEKAZU |
分类号 |
G02B27/28;G03B21/10;G03B21/28;H04N5/74;(IPC1-7):G03B27/18 |
主分类号 |
G02B27/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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