Lighting device that deactivates dangerous pathogens while providing visually appealing light
First Claim
1. A lighting device configured to deactivate pathogens in an environment, the lighting device comprising:
- a housing;
at least one first light-emitting element disposed within the housing and configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment;
at least one second light-emitting element disposed within the housing and configured to emit light having a wavelength of greater than 420 nm; and
one or more communication modules disposed within the housing and configured to communicatively connect the lighting device to one or more other lighting devices in the environment,wherein a first combined light output of the light emitted by the at least one first light-emitting element and the light emitted by the at least one second light-emitting element comprises white light, the white light having a color rendering index of at least 70 and a first color temperature of between approximately 2100K and 6000K, andwherein the white light has u′
, v′
coordinates on the 1976 CIE Chromaticity Diagram that lie on a curve that is between 0.035 Duv below and 0.035 Duv above a planckian locus defined by the ANSI C78.377-2015 color standard.
1 Assignment
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Accused Products
Abstract
A lighting device configured to deactivate pathogens in an environment. The lighting device includes at least one first light-emitting element configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment. The lighting device also includes at least one second light-emitting element configured to emit light having a wavelength of greater than 420 nm. A first combined light output of the light emitted by the at least one first and the at least one second light-emitting elements includes visible light that is perceived as white light. The white light has properties that make it visually appealing and unobjectionable.
72 Citations
25 Claims
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1. A lighting device configured to deactivate pathogens in an environment, the lighting device comprising:
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a housing; at least one first light-emitting element disposed within the housing and configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment; at least one second light-emitting element disposed within the housing and configured to emit light having a wavelength of greater than 420 nm; and one or more communication modules disposed within the housing and configured to communicatively connect the lighting device to one or more other lighting devices in the environment, wherein a first combined light output of the light emitted by the at least one first light-emitting element and the light emitted by the at least one second light-emitting element comprises white light, the white light having a color rendering index of at least 70 and a first color temperature of between approximately 2100K and 6000K, and wherein the white light has u′
, v′
coordinates on the 1976 CIE Chromaticity Diagram that lie on a curve that is between 0.035 Duv below and 0.035 Duv above a planckian locus defined by the ANSI C78.377-2015 color standard. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A lighting device configured to deactivate pathogens in an environment, the lighting device comprising:
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a sealingly enclosed housing; at least one first light-emitting element disposed on or within the housing and configured to emit light having a wavelength of between 400 nm and 420 nm, wherein the light emitted by the at least one first light-emitting element is configured to deactivate the pathogens in the environment; at least one second light-emitting element disposed on or within the housing and configured to emit light having a wavelength of greater than 420 nm; and one or more communication modules disposed within the housing and configured to communicatively connect the lighting device to one or more other lighting devices in the environment, wherein a first combined light output of the light emitted by the at least one first light-emitting element and the light emitted by the at least one second light-emitting element comprises white light, the white light having a color rendering index of at least 70 and a first color temperature of between approximately 2100K and 6000K, wherein the light emitted by at least one first light-emitting element has a minimum integrated irradiance of 0.05 mw/cm2 measured from any unshielded point in the environment that is 1.5 m from any point on any external-most luminous surface of the lighting device, and wherein the white light has u′
, v′
coordinates on the 1976 CIE Chromaticity Diagram that lie on a curve that is between 0.035 Duv below and 0.035 Duv above a planckian locus defined by the ANSI C78.377-2015 color standard. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of providing visually appealing light while deactivating pathogens in an environment, the method comprising:
emitting a first level of visible light from a plurality of light-emitting elements of a lighting device installed in the environment, the first level of visible light having u′
, v′
coordinates on the 1976 CIE Chromaticity Diagram that lie on a curve that is between 0.035 Duv below and 0.035 Duv above a planckian locus defined by the ANSI C78.377-2015 color standard, and the first level of visible light having a color rendering index of at least 60 and a first color temperature of between approximately 1500K and 7000K, wherein a component of the first level of visible light comprises light having a wavelength of between 400 nm and 420 nm and configured to deactivate the pathogens in the environment, and wherein the component of the first level of visible light has a minimum integrated irradiance of 0.05 mw/cm2 measured from any unshielded point in the environment that is 1.5 m from any point on any external-most luminous surface of the lighting device.- View Dependent Claims (25)
Specification