发明名称 |
Fresnel lens having reduced distortions |
摘要 |
A display device for displaying images in a rear projection display device is provided. The display device may include, amongst other structure, a screen including a lens portion and a frame portion. A tensioner may be operatively associated with the screen and may be adapted to adjust the frame portion to maintain a predetermined tautness in the lens portion.
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申请公布号 |
US2005146687(A1) |
申请公布日期 |
2005.07.07 |
申请号 |
US20040754092 |
申请日期 |
2004.01.06 |
申请人 |
GOHMAN JEFFREY A.;ENGLE T. S.;SLOBODIN DAVID |
发明人 |
GOHMAN JEFFREY A.;ENGLE T. S.;SLOBODIN DAVID |
分类号 |
G03B21/10;G03B21/28;G03B21/60;(IPC1-7):G03B21/28 |
主分类号 |
G03B21/10 |
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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