Optical fiber light emitting apparatus

Details Optical fiber light emitting apparatus Optical fiber light emitting apparatus

F - Mech Eng,Light,Heat,Weapons

21

V

F21V 8/00 (2006.01) G02B 6/36 (2006.01) G09F 9/00 (2006.01) G09F 9/305 (2006.01) H04M 1/22 (2006.01)

Patent

CA 2121653

An optical fiber light emitting apparatus (200) comprises at least one optical fiber (201) arranged in a repeating, recurrent pattern extending substantially throughout a predetermined area (206). The optical fiber (201) has a plurality of locations along the length thereof permitting light entering at least one end of the optical fiber (201) for transmission therein to be selectively emitted by the optical fiber (201) at the plurality of locations (210) for producing substantially uniform illumination substantially throughout the predetermined area (206). The repeating, recurrent pattern may form a spiral or serpentine pattern, for example. The repeating, recurrent pattern eliminates the space required for the fan-in arrangement (115) of prior art optical fiber light emitting panels (100). The optical fiber light emitting apparatus (200) is beneficial for illuminating keypads (613) and displays (611) in electronic devices (600), such as portable radio telephones, having limited space available.

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