Illumination – Light source and modifier – Including selected wavelength modifier
Patent
1997-09-11
1999-09-14
Cariaso, Alan
Illumination
Light source and modifier
Including selected wavelength modifier
362231, 362242, 362246, 362248, 40581, F21V 910
Patent
active
059511508
ABSTRACT:
A display system includes a plurality of color filters disposed between a plurality of light sources and a display panel. A first light source is energizeable to transmit light through a first color filter to illuminate the display panel with a first color (red). A second light source is energizeable to transmit light through a second color filter to illuminate the display panel with a second color (green). The first and second light sources are simultaneously energizeable to transmit light through both of the color filters to illuminate the display panel with a third color (yellow). The display panel includes inner and outer layers containing light absorbing pigment and light scattering particulate. The outer layer of the panel contains a greater quantity of pigment than the inner layer. The inner layer of the panel contains a greater quantity of light scattering particulate than the outer layer. The inner and outer layers of the panel have the same optical density.
REFERENCES:
patent: 1064911 (1913-06-01), Jarvis
patent: 2168113 (1939-08-01), Best
patent: 2169022 (1939-08-01), Chubb
patent: 5097258 (1992-03-01), Iwaki
patent: 5295050 (1994-03-01), Helstern et al.
Cariaso Alan
Eaton Corporation
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