Device for the projection of images

Details Device for the projection of images Device for the projection of images

1991-03-14

1992-07-28

Gonzalez, Frank

Optical: systems and elements

Optical modulator

Light wave directional modulation

359495, G02F 129

Patent

active

051345161

ABSTRACT:
In a device for the projection of images by means of liquid crystal panels, the two orthogonal components of light are used to build the image to be projected, thus giving a significant improvement in efficiency. To this end, before going through a liquid crystal panel, the light is separated into two beams having different directions as a function of their polarization, by means of a phase separator and then, after having undergone a phase modulation by the liquid crystal panel, these two beams are recombined to build the image given by the liquid crystal panel.

REFERENCES:
patent: 3429641 (1969-02-01), Fowler
patent: 4464018 (1984-07-01), Gagnon
patent: 5013140 (1991-05-01), Healey et al.

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