发明名称 |
DEVICE FOR THE PROJECTION OF IMAGES USING TWO ORTHOGONAL COMPONENTS OF LIGHT POLARIZATION |
摘要 |
Disclosed is an image projector in which a spatial modulation of light is carried out on the two orthogonal components of polarization of light in order to increase the luminous efficiency of the projector. The image projector of the invention includes a light source, a projection screen, a splitter of polarizations splitting the light into two polarized beams having complementary polarizations, two mirrors reflecting the two polarized beams, firstly so as to give them opposite directions and superimpose them on one and the same axis on which a spatial light modulator is positioned and, secondly, to make them pass again through the polarization splitter by which they are superimposed on one and the same axis with one and the same direction and oriented towards the projection screen and/or the light source as a function of their modulation by the spatial modulator.
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申请公布号 |
US5181054(A) |
申请公布日期 |
1993.01.19 |
申请号 |
US19910739488 |
申请日期 |
1991.08.02 |
申请人 |
THOMSON-CSF |
发明人 |
NICOLAS, CHRISTOPHE;LOISEAUX, BRIGITTE;HUIGNARD, JEAN-PIERRE;PUECH, CLAUDE |
分类号 |
G02B27/14;G02B27/28;G02F1/13;G02F1/1347;G03B33/12;H04N9/31 |
主分类号 |
G02B27/14 |
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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