Directional diffuser for a liquid crystal display

Details Directional diffuser for a liquid crystal display Directional diffuser for a liquid crystal display

1992-07-09

1994-01-18

Sikes, William L.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 69, G02F 1133

Patent

active

052803716

ABSTRACT:
A display apparatus including a light source, a liquid crystal panel, and one or more directional diffuser lens arrays disposed therebetween provides a tailored variation of luminance with viewing angle, a uniform variation of luminance with viewing angle within a first predetermined range of viewing angles and a concentration of light energy within a second predetermined range of viewing angles.

REFERENCES:
patent: 4416515 (1983-11-01), Fumada et al.
patent: 5052783 (1991-10-01), Hamada
patent: 5101279 (1992-03-01), Kurematsu et al.
patent: 5128783 (1992-07-01), Abileah et al.
patent: 5161041 (1992-11-01), Abileah et al.
IBM Corp., "Polarized backlight for liquid crystal display", IBM Technical Disclosure Bulletin, vol. 33, No. 1B, Jun. 1990, pp. 143-144.

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