Lighting device

Details Lighting device Lighting device

2005-09-19

2010-10-12

Ton, Anabel M (Department: 2875)

Illumination

Light fiber, rod, or pipe

Light emitting diode

C362S640000, C362S650000, C362S651000

Reexamination Certificate

active

07810974

ABSTRACT:
The invention relates to a lighting device (1) comprising an envelope (2), a base (3), a solid-state light source (4) and optical means (5) provided with a light-outcoupling surface, the solid-state light source (4) being optically coupled to said optical means (5). The use of a spirally wound optical fiber as optical means (5) and a transparant envelope (2) shaped as a conventional light bulb provides a lighting device (1) which is a good look-alike of the conventional incandescent lamp, such as, for instance, the carbon filament lamp. The long life-time and high efficiency of LEDs as a solid-state light source (4) will make this lighting device (1) a very attractive alternative for the conventional incandescent lamp. The lighting device (1) according to the present invention has the further advantage that a large gamut of colors can be chosen and adjusted by using, for instance, red green and blue LEDs in said lighting device (1). The electronics for driving and controlling the intensity and color settings can be incorporated in the lighting device (1).

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Klaus Komarek; “Glasfaserkabel Zur Lichtverteilung”, www.wer-weiss-was.de/theme59/article2735415.html, 2005, XP002421230.

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