LIGHTING DEVICE WITH DEFINED SPECTRAL POWER DISTRIBUTION
First Claim
1. A lighting device adapted to emphasize and/or deemphasize perception of at least one color of a target surface having a characteristic reflectance spectral distribution, the lighting device comprising:
- a plurality of solid state emitters including a first solid state emitter having peak output emissions at a first wavelength, and including a second solid state emitter having peak output emissions at a second wavelength that differs from the first wavelength; and
at least one circuit element adapted to control operation of the plurality of solid state emitters to output an aggregated spectral power distribution selected to emphasize and/or deemphasize perception of at least one color of a target surface based upon the reflectance spectral distribution.
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Accused Products
Abstract
Solid state lighting devices and illumination methods involve use of multiple solid state emitters of different colored outputs (optionally including at least one white or near-white emitter). Operation of the solid state emitters is controlled with at least one circuit element to emphasize and/or deemphasize perception of at least one color of a target surface based upon a reflectance spectral distribution of the target surface. At least one emitter may have an associated passive or active filter; the filterable emitter and/or active filter may be operated to deemphasize perception of at least one color of a target surface. Activation and/or alteration of emphasis or deemphasis of perception of color of a target surface may be selected by a user or automatically controlled.
85 Citations
38 Claims
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1. A lighting device adapted to emphasize and/or deemphasize perception of at least one color of a target surface having a characteristic reflectance spectral distribution, the lighting device comprising:
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a plurality of solid state emitters including a first solid state emitter having peak output emissions at a first wavelength, and including a second solid state emitter having peak output emissions at a second wavelength that differs from the first wavelength; and at least one circuit element adapted to control operation of the plurality of solid state emitters to output an aggregated spectral power distribution selected to emphasize and/or deemphasize perception of at least one color of a target surface based upon the reflectance spectral distribution. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method comprising:
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identifying a color associated with a target surface to be emphasized or deemphasized, the target surface having a characteristic reflectance spectral distribution; selecting a lighting device comprising a plurality of solid state emitters, or selecting an operating mode of a lighting device comprising a plurality of solid state emitters, to output an aggregated spectral power distribution adapted to emphasize or deemphasize the identified color based upon the reflectance spectral distribution, wherein the plurality of solid state emitters includes a first solid state emitter having peak output emissions at a first wavelength, and a second solid state emitter having peak output emissions at a second wavelength that differs from the first wavelength; and illuminating the target surface with an aggregated spectral power distribution output by the plurality of solid state emitters to emphasize or deemphasize perception of the identified color. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification