LED lighting system with helical fiber filament

Details LED lighting system with helical fiber filament LED lighting system with helical fiber filament

2007-07-10

2007-07-10

Leung, Quyen (Department: 2874)

Illumination

Light fiber, rod, or pipe

C362S555000

Reexamination Certificate

active

11482412

ABSTRACT:
A lighting system includes a helical light-transmitting fiber and an LED. The helical light-transmitting fiber is doped with a first wavelength converting material and defines a helical axis. The LED has a light-emitting portion for emitting light of a first color. The LED is aligned axially with the first helical fiber such that a portion of any light emitted by the LED will pass through the open space between the turns of the first helical fiber and a portion of any light emitted by the LED will be received by the first helical fiber and converted to light of a second color. Adjustment of the compression of the helical fiber will adjust the mixture of colors in the light emitted by the system. Further, the relatively small cross-sectional area of the fiber serves to lessen any dye migration in the fiber.

REFERENCES:
patent: 4028081 (1977-06-01), Marcatili
patent: 4245885 (1981-01-01), Hodge
patent: 5015842 (1991-05-01), Fradenburgh et al.
patent: 5103380 (1992-04-01), Lindner et al.
patent: 6496301 (2002-12-01), Koplow et al.
patent: 6650664 (2003-11-01), Moore et al.

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