发明名称 |
COLOR SYNTHESIS OPTICAL ELEMENT, PROJECTION DISPLAY DEVICE USING SAME, AND METHOD FOR CONTROLLING DISPLAY THEREOF |
摘要 |
A first dichroic mirror (2a) and a second dichroic mirror (2b) are formed on the bonding surfaces between four right angle prisms (1a-1d) so as to intersect. The first dichroic mirror (2a) transmits, of visible light of P-polarization, at least the light of a specific wavelength band and reflects, of visible light of S-polarization, at least the light of the specific wavelength band. The second dichroic mirror (2b) transmits, of visible light of P-polarization, at least light of the specific wavelength band and transmits, of visible light of S-polarization, at least light of the specific wavelength band. The cutoff wavelengths with respect to S-polarized light of both dichroic mirrors (2a and 2b) are set within ranges of bands other than those of the three primary colors of light. |
申请公布号 |
EP2472306(A1) |
申请公布日期 |
2012.07.04 |
申请号 |
EP20100818690 |
申请日期 |
2010.09.09 |
申请人 |
NEC CORPORATION |
发明人 |
IMAI, MASAO;SAITOH, GOROH;OKUMURA, FUJIO |
分类号 |
G02B27/28;G02B5/04;G02B5/28;G02B5/30;G03B21/14;H04N9/31 |
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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