Precise repeatable setting of color characteristics for lighting applications
First Claim
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1. A method of illuminating a subject, comprising:
- generating a variable amount of light of a first wavelength and a variable amount of light of a second wavelength, wherein the second wavelength is different from the first wavelength;
optically combining the light of the first wavelength with the light of the second wavelength;
illuminating the subject with the combined light;
adjusting at least one of the amount of the light and the first wavelength or the amount of the light of the second wavelength, to achieve a color characteristic of a desired illumination of the subject with the combined light;
recording the amount of the light of the first wavelength and the amount of the light of the second wavelength contained in the combined light used to achieve the desired illumination of the subject;
setting a lighting system to generate the recorded amount of the light of the first wavelength and to generate the recorded amount of the light of the second wavelength;
operating the lighting system to generate the set recorded amounts of light of the first and second wavelengths;
during operation of the lighting system, measuring a temperature condition associated with operation of the lighting system;
optically combining the light of the first and second wavelengths generated by the lighting system to produce a combined light output corresponding to the desired illumination, and based on the measured temperature condition; and
irradiating the subject with the combined light output from the lighting system, to achieve the desired illumination of the subject using the lighting system.
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Abstract
A desired color of illumination of a subject is achieved by determining settings for color inputs and applying those setting to one or more systems that generate and mix colors of light, so as to provide combined light of the desired character. In the examples of appropriate systems, an optical integrating cavity diffusely reflects light of three or more colors, and combined light emerging from an aperture of the cavity illuminates the subject. System settings for amounts of the different colors of the input lights are easily recorded for reuse or for transfer and use in other systems.
214 Citations
18 Claims
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1. A method of illuminating a subject, comprising:
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generating a variable amount of light of a first wavelength and a variable amount of light of a second wavelength, wherein the second wavelength is different from the first wavelength; optically combining the light of the first wavelength with the light of the second wavelength; illuminating the subject with the combined light; adjusting at least one of the amount of the light and the first wavelength or the amount of the light of the second wavelength, to achieve a color characteristic of a desired illumination of the subject with the combined light; recording the amount of the light of the first wavelength and the amount of the light of the second wavelength contained in the combined light used to achieve the desired illumination of the subject; setting a lighting system to generate the recorded amount of the light of the first wavelength and to generate the recorded amount of the light of the second wavelength; operating the lighting system to generate the set recorded amounts of light of the first and second wavelengths; during operation of the lighting system, measuring a temperature condition associated with operation of the lighting system; optically combining the light of the first and second wavelengths generated by the lighting system to produce a combined light output corresponding to the desired illumination, and based on the measured temperature condition; and irradiating the subject with the combined light output from the lighting system, to achieve the desired illumination of the subject using the lighting system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of illuminating a subject with light of a desired color characteristic, comprising:
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setting a first amount for light of a first wavelength; generating light of the first wavelength from a first source, in a first intensity corresponding to the first set amount; setting a second amount for light of a second wavelength; generating light of the second wavelength from a second source, in a second intensity corresponding to the second set amount, wherein the second wavelength is different from the first wavelength, and the first and second set amounts correspond to the desired color characteristic for the illumination of the subject; during generation of light of the first and second wavelengths, measuring a temperature condition associated with operation of the first and second sources; adjusting at least one of the first intensity of the first source and the second intensity of the second source in response to the measured temperature condition; diffusely reflecting the generated light of the first and second wavelengths from the first and second sources within a cavity, to produce combined light containing amounts of light of the first and second wavelengths in proportion to the first and second set amounts; and emitting at least a portion of the combined light through an aperture of the cavity to illuminate the subject with light of the desired color characteristic. - View Dependent Claims (11)
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12. A method, comprising steps of:
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generating a variable amount of light of a first wavelength and a variable amount of light of a second wavelength, wherein the second wavelength is different from the first wavelength; optically combining the light of the first wavelength with the light of the second wavelength to produce illumination with the combined light; adjusting at least one of the amount of the light of the first wavelength and the amount of the light of the second wavelength, to achieve a desired color characteristic of the illumination with the combined light; recording the amount of the light of the first wavelength and the amount of the light of the second wavelength contained in the combined light used to achieve the desired color characteristic of the illumination; setting a lighting system to generate the recorded amount of the light of the first wavelength and to generate the recorded amount of the light of the second wavelength; operating the lighting system to generate the set recorded amounts of light of the first and second wavelengths; during operation of the lighting system, measuring a temperature associated with operation of the lighting system and adjusting generation of light of at least one of the first and second wavelengths based on the measured temperature condition; optically combining the light of the first and second wavelengths generated by the lighting system to produce a combined light output of the lighting system corresponding to the desired the desired color characteristic; and emitting the combined light output as illumination from the lighting system. - View Dependent Claims (13, 14)
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15. A method, comprising steps of:
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setting a first amount for light of a first wavelength; generating light of the first wavelength from a first source, in a first intensity corresponding to the first set amount; setting a second amount for light of a second wavelength; generating light of the second wavelength from a second source, in a second intensity corresponding to the second set amount, wherein the second wavelength is different from the first wavelength, and the first and second set amounts correspond to a desired color characteristic; during generation of light of the first and second wavelengths, measuring a temperature condition associated with operation the first and second sources; adjusting at least one of the first intensity of the first source and the second intensity of the second source in response to the measured temperature condition; diffusely reflecting the generated light of the first and second wavelengths from the first and second sources within a cavity, to produce combined light containing amounts of light of the first and second wavelengths in proportion to the first and second set amounts; and emitting at least a portion of the combined light through an aperture of the cavity for illumination with light of the desired color characteristic. - View Dependent Claims (16, 17, 18)
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Specification