发明名称 |
Lichtventilvorrichtung und Anzeigesystem, die diese benutzt |
摘要 |
<p>A liquid-crystal light valve unit and a projection display system using same are provided. The liquid-crystal light valve includes a light valve having openings defining pixels in a matrix arrangement, first light-reflecting layer for reflecting light projected from a light source entering out of the openings of the light valve, a second light-reflecting layer, including openings in a matrix arrangement, located between the light source and the first light-reflecting layer, for directing the light reflected from the first light-reflecting layer toward the light valve while allowing the light from the light source to be propagated through the openings to the light valve, and a lens array including a plurality of positive lens elements in a matrix arrangement for directing the light from the light source to the second light-reflecting layer, a focal point of each of the positive lens elements being defined on a given area in the vicinity of each of the openings of the second light-reflecting layer. With this arrangement, an effective aperture ratio is increased for projection of bright images. <IMAGE></p> |
申请公布号 |
DE69409844(D1) |
申请公布日期 |
1998.06.04 |
申请号 |
DE1994609844 |
申请日期 |
1994.01.25 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., KADOMA, OSAKA, JP |
发明人 |
FUSHIMI, YOSHIMASA, HIRAKATA-SHI, OSAKA, JP;MIYATAKE, YOSHITO, NEYAGAWA-SHI, OSAKA, JP |
分类号 |
G02F1/1335;H04N9/31;(IPC1-7):G02F1/133;G02B3/00 |
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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