Methods and apparatus for generating and modulating white light illumination conditions
First Claim
1. A method of providing illumination in a marketplace, comprising:
- a) illuminating at least one article in the marketplace with essentially white light from a plurality of LEDs, the marketplace comprising a consumer environment configured for the sale or purchase of goods and services, the plurality of LEDs comprising a first white LED providing a first output having a first spectrum and a first color temperature, the first white LED including a first phosphor, the first white LED generating a first wavelength that is converted by the first phosphor to provide the first spectrum, and a second LED providing a second output having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum; and
b) independently controlling at least one of the first white LED and the second LED so as to vary a third color temperature and a spectral content of the essentially white light.
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Accused Products
Abstract
Methods and apparatus for generating and modulating white light illumination conditions. Examples of applications in which such methods and apparatus may be implemented include retail environments (e.g., food, clothing, jewelry, paint, furniture, fabrics, etc.) or service environments (e.g., cosmetics, hair and beauty salons and spas, photography, etc.) where visible aspects of the products/services being offered are significant in attracting sales of the products/services. Other applications include theatre and cinema, medical and dental implementations, as well as vehicle-based (automotive) implementations. In another example, a personal grooming apparatus includes one or more light sources disposed in proximity to a mirror and configured to generate variable color light, including essentially white light, whose color temperature may be controlled by a user.
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Citations
25 Claims
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1. A method of providing illumination in a marketplace, comprising:
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a) illuminating at least one article in the marketplace with essentially white light from a plurality of LEDs, the marketplace comprising a consumer environment configured for the sale or purchase of goods and services, the plurality of LEDs comprising a first white LED providing a first output having a first spectrum and a first color temperature, the first white LED including a first phosphor, the first white LED generating a first wavelength that is converted by the first phosphor to provide the first spectrum, and a second LED providing a second output having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum; and b) independently controlling at least one of the first white LED and the second LED so as to vary a third color temperature and a spectral content of the essentially white light. - View Dependent Claims (2, 3, 5, 6, 7, 8, 9)
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4. A method of providing illumination in a marketplace, comprising:
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a) illuminating at least one article in the marketplace with essentially white light from a plurality of LEDs, the marketplace comprising a consumer environment configured for the sale or purchase of goods and services, the plurality of LEDs comprising a first white LED providing a first output having a first spectrum and a first color temperature, the first white LED including a first phosphor, the first white LED generating a first wavelength that is converted by the first phosphor to provide the first spectrum, and a second LED providing a second output having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum; and b) independently controlling at least one of the first white LED and the second LED so as to vary a third color temperature and a spectral content of the essentially white light, wherein the step b) comprises a step of independently controlling at least one of the first white LED and the second LED in response to at least one action of a person in the vicinity of the at least one article.
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10. A method of providing illumination in a marketplace, comprising:
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illuminating a first article in a first portion of the marketplace with first essentially white light produced by a first plurality of LEDs comprising at least one first white LED including a first phosphor, the first plurality of LEDs comprising a first LED having a first spectrum and a first color temperature and a second LED having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum, wherein at least one of the first LED and the second LED includes the at least one first white LED generating a first wavelength that is converted by the first phosphor to provide one of the first spectrum and the second spectrum; illuminating a second article in a second portion of the marketplace with second essentially white light produced by a second plurality of LEDs comprising at least one second white LED, the second plurality of LEDs comprising a third LED having a third spectrum and a fourth LED having a fourth spectrum, the third spectrum being different than the fourth spectrum, wherein at least one of the third LED and the fourth LED includes the at least one second white LED; and controlling a light output of at least one of the first LED, the second LED, the third LED and the fourth LED such that at least one of the first color temperature and the second color temperature of the first light is controlled independently of a color temperature of the second light. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A method of providing illumination in a marketplace, comprising:
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illuminating a first article in a first portion of the marketplace with first essentially white light produced by a first plurality of LEDs comprising at least one first white LED including a first phosphor, the first plurality of LEDs comprising a first LED having a first spectrum and a first color temperature and a second LED having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum, wherein at least one of the first LED and the second LED includes the at least one first white LED generating a first wavelength that is converted by the first phosphor to provide one of the first spectrum and the second spectrum; illuminating a second article in a second portion of the marketplace with second essentially white light produced by a second plurality of LEDs comprising at least one second white LED, the second plurality of LEDs comprising a third LED having a third spectrum and a fourth LED having a fourth spectrum, the third spectrum being different than the fourth spectrum, wherein at least one of the third LED and the fourth LED includes the at least one second white LED; and controlling a light output of at least one of the first LED, the second LED, the third LED and the fourth LED such that at least one of the first color temperature and the second color temperature of the first light is controlled independently of a color temperature of the second light, wherein the step of controlling comprises a step of controlling the light output of at least one of the first LED, the second LED, the third LED and the fourth LED in response to at least one action of a person associated with the marketplace.
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23. A method of illumination, comprising:
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A) illuminating a first room with first essentially white light; B) measuring a first spectral content of the first essentially white light; C) illuminating a second room with second essentially white light produced by a plurality of LEDs, a first white LED of the plurality of LEDs having a first spectrum and a first color temperature, the first white LED including a first phosphor, the first white LED generating a first wavelength that is converted by the first phosphor to provide the first spectrum, and a second LED of the plurality of LEDs having a second spectrum and a second color temperature, the first spectrum being different than the second spectrum; and D) adjusting a light output of at least one of the first white LED and the second LED such that a second spectral content of the second light is substantially the same as the first spectral content of the first light. - View Dependent Claims (24, 25)
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Specification