Illumination system for an electronic device

Details Illumination system for an electronic device Illumination system for an electronic device

2005-04-05

2005-04-05

Sember, Thomas M. (Department: 2875)

Illumination

Light fiber, rod, or pipe

Illuminating or display apparatus

C362S024000, C362S030000, C362S088000

Reexamination Certificate

active

06874926

ABSTRACT:
A light conduit to be used in conjunction with a light source in a hand-held electronic device for illuminating the keys and display of the device. The light conduit has a planar light guiding section with a plurality of light escape elements located in the keys to allow portions of the received light to escape for illuminating the keys. An light escapement section, located near the display, is extended from or optically coupled to the light guiding section to allow a further portion of the received light to escape from the light escapement section for illuminating the display. The light source can be located near the light guide section or near the light escapement section. light guide section or near the light escapement section.

REFERENCES:
patent: 5083240 (1992-01-01), Pasco
patent: 5128842 (1992-07-01), Kenmochi
patent: 5568367 (1996-10-01), Park
patent: 5711588 (1998-01-01), Rudisill
patent: 6168283 (2001-01-01), Howell
patent: 6367940 (2002-04-01), Parker et al.
patent: 6561659 (2003-05-01), Hsu
patent: 6598987 (2003-07-01), Parikka
patent: 0123805 (2001-04-01), None

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