Lighting apparatus for a portable computer with illumination ape

Details Lighting apparatus for a portable computer with illumination ape Lighting apparatus for a portable computer with illumination ape

1997-01-22

1998-09-29

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Particular excitation of liquid crystal

Electrical excitation of liquid crystal

349 1, 349 58, 362 26, 362 31, 361681, G02F 11335, G02F 11333, G02F 113

Patent

active

058152253

ABSTRACT:
A lap top computer system is provided having a light emitting device for illuminating a keyboard, and the surrounding work area. The apparatus operates to convey light from the liquid crystal display backlighting light source to the keyboard and work area utilizing light pipes. The light pipes transmit light from the backlighting system light source to lenses located on a surface of the computer body. The lenses are provided with adjustable doors covering the light source for varying the level of illumination.

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patent: 5521797 (1996-05-01), Kashima et al.
patent: 5559911 (1996-09-01), Forkner et al.

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