COLOR MANAGER FOR BACKLIGHT SYSTEMS OPERATIVE AT MULTIPLE CURRENT LEVELS
First Claim
1. A color manager for use with a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires, the sub-luminaires arranged to produce a combined light, the color manager comprising:
- a sampler arranged to output an electrical representation of the optical output of the luminaire;
a converter coupled to the output of said sampler and operatively associated with a current selector arranged to select the driving current level of the luminaire from a plurality of current levels, said converter arranged to convert said electrical representation to a pre-determined calorimetric system in cooperation with a calibration matrix having values selected responsive to the selected driving current level; and
a driver operatively associated with the luminaire, the converter and the current selector, said driver arranged to drive the luminaire in accordance with the driving current level as selected by the current selector.
6 Assignments
0 Petitions
Accused Products
Abstract
A color manager for use with a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires arranged to produce a combined light. The color manager is constituted of a sampler arranged to output an electrical representation of the optical output of the luminaire, a converter coupled to the output of said sampler and operatively associated with a current selector arranged to select the driving current level of the luminaire from a plurality of current levels. The converter is arranged to convert said electrical representation to a pre-determined calorimetric system in cooperation with a calibration matrix whose values are selected responsive to the selected driving current level. The color manager further comprises a driver operatively associated with the luminaire, the converter and current selector and arranged to drive the luminaire in accordance with the driving current level as selected by the selector.
62 Citations
30 Claims
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1. A color manager for use with a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires, the sub-luminaires arranged to produce a combined light, the color manager comprising:
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a sampler arranged to output an electrical representation of the optical output of the luminaire; a converter coupled to the output of said sampler and operatively associated with a current selector arranged to select the driving current level of the luminaire from a plurality of current levels, said converter arranged to convert said electrical representation to a pre-determined calorimetric system in cooperation with a calibration matrix having values selected responsive to the selected driving current level; and a driver operatively associated with the luminaire, the converter and the current selector, said driver arranged to drive the luminaire in accordance with the driving current level as selected by the current selector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of backlighting comprising:
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driving a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires at one of a selectable plurality of current levels; sampling the optical output of the driven luminaire; and converting, responsive to said selected current level, said sampled optical output into a pre-determined calorimetric system. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A color manager for use with a luminaire constituted of a plurality of different colored light emitting diode based sub-luminaires, the sub-luminaires arranged to produce a combined light, the color manager comprising:
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a sampler arranged to output an electrical representation of the optical output of the luminaire; a driver arranged to drive the luminaire at a selectable one of a plurality of driving current levels; and a converter coupled to the output of said sampler and operative to convert said electrical representation to a pre-determined calorimetric system in cooperation with one of a plurality of calibration matrixes, said one calibration matrix being selected responsive to the selected driving current level. - View Dependent Claims (28)
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29. A backlight system comprising:
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a luminaire constituted of a plurality of colored light emitting diodes producing a combined white light; a sampler arranged to output an electrical representation of the optical output of the colored light emitting diodes; a driver arranged to drive the colored light emitting diodes at a selectable one of a plurality of driving current levels; and a color controller coupled to the output of said sampler and operative to convert said electrical representation to a pre-determined calorimetric system in cooperation with one of a plurality of calibration matrixes, said one calibration matrix being selected responsive to the driving current level. - View Dependent Claims (30)
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Specification