Liquid crystal display device with improved convergence efficien

Details Liquid crystal display device with improved convergence efficien Liquid crystal display device with improved convergence efficien

1991-10-01

1994-03-15

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 49, 353 31, G02F 113, G03B 2114, G02B 508

Patent

active

052950050

ABSTRACT:
A liquid crystal display device comprises a converging reflector, a liquid crystal panel, a condenser lens and a projection lens, wherein a correlation between these optical parts and structure of sizes of the optical parts is considered. Accordingly, a convergence efficiency of the device as whole system can be improved. A converging reflector comprises a light source and a reflecting mirror reflecting a light from the light source, wherein a curved plane shape of the mirror is offset radially to the same length as a radius of a light emitting tube of the light source. Accordingly, a convergence efficiency of the converging reflector can be improved.

REFERENCES:
patent: 4864390 (1989-09-01), McKechnie et al.
patent: 5123729 (1992-06-01), Kondo et al.
patent: 5142387 (1992-08-01), Shikama et al.
patent: 5146248 (1992-09-01), Duwaer et al.
patent: 5192962 (1993-03-01), Nishida et al.

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