发明名称 |
Polarization recapture system for liquid crystal-based data projectors |
摘要 |
A projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel integrator. The input end of the tunnel integrator includes an input aperture and a reflective inside surface coated with a quarter wave retarder. In operation, the randomly polarized light enters the tunnel integrator through the input aperture. The polarization recapture system transmits light having a first polarization as polarized light output and recycles light having a second polarization orthogonal to the first polarization. The light having the second polarization is reflected by the transmitting/reflecting polarizer back into the tunnel integrator. The polarization recapture system recycles the light having the second polarization by reflecting and reorienting the light having the second polarization to light of the first polarization.
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申请公布号 |
US6739723(B1) |
申请公布日期 |
2004.05.25 |
申请号 |
US20010014029 |
申请日期 |
2001.12.07 |
申请人 |
DELTA ELECTRONICS INC |
发明人 |
HAVEN THOMAS J;MUNSON KURT R |
分类号 |
G02F1/1335;G03B21/00;G03B21/14;G03B21/20;H04N3/14;H04N9/31;(IPC1-7):G03B21/00;G02F1/133 |
主分类号 |
G02F1/1335 |
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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