Display backlight with white balance compensation

Details Display backlight with white balance compensation Display backlight with white balance compensation

1998-12-10

2000-10-10

Cariaso, Alan

Illumination

Light source and modifier

With rheostat or switch

362231, 362 31, 362260, F21V 2300

Patent

active

061294446

ABSTRACT:
A backlight for a flat panel display includes a light-combining wedge which combines light from multiple light sources before sending it through the flat panel display, with the light-combining wedge receiving light from two lamps, with each of the lamps producing a different color of light. A control element is used to vary the luminance of one of the lamps relative to the other to allow for an adjustable mixing of colors and thus provides an adjustable white balance.

REFERENCES:
patent: 1348957 (1920-08-01), Pope
patent: 3143300 (1964-08-01), Way
patent: 3805049 (1974-04-01), Frank et al.
patent: 3816739 (1974-06-01), Stolov
patent: 4380791 (1983-04-01), Nishizawa
patent: 4490777 (1984-12-01), Tanner et al.
patent: 4535394 (1985-08-01), Dugre
patent: 4641446 (1987-02-01), Jackson et al.
patent: 5876107 (1999-03-01), Parker et al.

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