Optics: image projectors – Composite projected image – Multicolor picture
Patent
1997-07-15
1999-04-27
Dowling, William
Optics: image projectors
Composite projected image
Multicolor picture
353 20, 353122, 348767, 359495, G03B 2114
Patent
active
058971912
ABSTRACT:
A color image projection apparatus comprising a plurality of (LC) image display panels (33), each operating with light of a different color (R,G,B), whose outputs are combined by combining means (24, 25) and projected via a lens (28) onto a screen (32) and electro-optical deflection means, comprising a birefringent element (40) following the combining means and preceded by polarization switch means (42) operable to displace slightly the outputs from rows of pixels in each of the panels in either the odd or even fields so as to produce an interlaced image on the screen. Considerably improved performance is achieved by providing a respective, separate, polarization switch element between each display panel (33) and the combining means (24, 25), and preferably closely adjacent to the output side of the display panel.
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Dowling William
Egbert, III Walter M.
U.S. Philips Corporation
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