Optical system of a reflection LCD projector

Details Optical system of a reflection LCD projector Optical system of a reflection LCD projector

1995-10-13

1998-01-06

Sikes, William L.

Liquid crystal cells, elements and systems

Liquid crystal system

Projector including liquid crystal cell

349117, G02F 11335

Patent

active

057060630

ABSTRACT:
An optical system of an LCD projector includes a light beam splitter for passing only a specific wavelength of light emitted from a light source and reflecting another wavelength. Two reflection type LCDs for a black-and-white signal and a color signal, respectively, are placed in correspondence with the light of the respective wavelengths, split by the light beam splitter. The LCDs either transmit or scatter the light of the respective wavelengths according to whether the particular LCD is turned on or off, so that the resolution can be improved by projecting the LCD for the black-and-white signal together with the LCD for the color signal.

REFERENCES:
patent: 5042921 (1991-08-01), Sato et al.
patent: 5052783 (1991-10-01), Hamada
patent: 5153752 (1992-10-01), Kurematsu et al.
patent: 5239322 (1993-08-01), Takanashi et al.

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