Method for dimming a light generatng system for generating...

Details Method for dimming a light generatng system for generating... Method for dimming a light generatng system for generating...

2007-04-04

2011-12-27

Ismail, Swaki S (Department: 2819)

Electric lamp and discharge devices: systems

With radiant energy sensitive control means

Load device irradiating the radiant energy responsive device

C315S324000, C315S308000, C362S231000

Reexamination Certificate

active

08084948

ABSTRACT:
A method for dimming an illumination system (20) capable of emitting light (L) with a variable color is described. The illumination system (20) comprises three dimmable light sources (21, 22, 23) generating respective lights (L1, L2, L3) having respective, mutually different colors (C1, C2, C3). The method comprises the step of reducing the light intensities (I1, I2, I3) of the three dimmable light sources (21, 22, 23) while maintaining the color point until one of said light sources (21) reaches a lower dim limit (IMIN)—The method further comprises the step of maintaining the light intensity (I1) of said one light source (21) at its lower dim limit (IMIN) and reducing the light intensities (I2, I3) of the two other dimmable light sources (22, 23) in such a manner that the hue is maintained.

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Anonymous: “Hue & Chroma Colour Setting Method” Internet Citation, Technical Disclosure, [Online] Jun. 30, 2004, XP002378520.

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