Illumination device and application to a display device

Details Illumination device and application to a display device Illumination device and application to a display device

1995-06-13

1997-04-15

Epps, Georgia Y.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 1, 359619, 359620, 359625, 359626, G03H 100, G02B 2710, G02B 532

Patent

active

056215479

ABSTRACT:
The invention relates to an illumination device in which a holographic device (HP.sub.i) separates the polarizations of an incident beam. The resulting polarized beam is transmitted to a holographic device (HL.sub.i) focusing the beam at various points of a screen. This screen may be a liquid-crystal screen (LCD).
Applications: Liquid-crystal display.

REFERENCES:
patent: 3622220 (1971-11-01), Kogelnik
patent: 5009502 (1991-04-01), Shih et al.
patent: 5410421 (1995-04-01), Huignard
IBM Technical Disclosure Bulletin vol 31 No. 3 Aug. 1988 "Three-Beam Optical Detection For Magneto-Optic Storage Using Holography"; pp. 12-13.

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