Illumination optics for spatial light modulator

Details Illumination optics for spatial light modulator Illumination optics for spatial light modulator

1996-10-21

1998-08-18

Epps, Georgia Y.

Optical: systems and elements

Lens

Anamorphic

359618, 359291, G02B 1308

Patent

active

057965269

ABSTRACT:
Variations on the Koehler illumination system, used for providing light to be reflected from, or transmitted by, an SLM. An anamorphic illumination system (10) uses multiple light sources (11) and a cylindrical lens (14) to provide an elongated and compressed beam to the SLM (16). A cascaded illumination system (30) uses multiple light sources (31) and multiple TIR prisms (33) to provide an extended light beam or one that is more intense, to the SLM (36).

REFERENCES:
patent: 5159485 (1992-10-01), Nelson
patent: 5170181 (1992-12-01), Tamada
patent: 5386250 (1995-01-01), Guerinot
patent: 5408553 (1995-04-01), English, Jr. et al.

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