发明名称 |
Projection-type image display apparatus |
摘要 |
A projection-type display apparatus includes a light source; a color separating/synthesizing device arranged to divide light from the light source into three different color light rays; and three reflection-type display devices arranged to reflect the three different color light rays, respectively. The color separating/synthesizing device is further arranged to synthesize the three different color light rays respectively reflected by the three reflection display devices. The color separating/synthesizing device has transmittance of substantially 50% for each of a s-polarized light ray having a first wavelength and a p-polarized light ray having a second wavelength. A difference between the first wavelength of the s-polarized light ray and the second wavelength of the p-polarized light ray is equal to or less than 40 nm.
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申请公布号 |
US6157420(A) |
申请公布日期 |
2000.12.05 |
申请号 |
US19980049923 |
申请日期 |
1998.03.30 |
申请人 |
SHARP KABUSHIKI KAISHA |
发明人 |
NAKANISHI, HIROSHI;HAMADA, HIROSHI;TAKAFUJI, YUTAKA |
分类号 |
G02F1/13;G03B21/00;H04N9/31;(IPC1-7):G02F1/133 |
主分类号 |
G02F1/13 |
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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