LIGHTING DEVICES WITH COLOR-TUNING MATERIALS AND METHODS FOR TUNING COLOR OUTPUT OF LIGHTING DEVICES
First Claim
1. A lighting device, comprising:
- a housing enclosing a housing interior and comprising a light exit for outputting a combination of primary light, secondary light, and auxiliary light;
a light source configured for emitting a primary light beam of a primary wavelength through the housing interior;
a light converter comprising a luminescent material facing the housing interior and configured for emitting secondary light of one or more wavelengths different from the primary wavelength, in response to excitation by the primary light beam; and
a color tuning material optically aligned with the light source and configured for emitting auxiliary light in response to incidence by the primary light beam.
2 Assignments
0 Petitions
Accused Products
Abstract
A lighting device may include a housing interior, a light exit, a light source, and a light converter. Output light is outputted from the light exit by emitting primary light from the light source. In response, the light converter emits secondary light of one or more wavelengths different than the primary wavelength, and the output light includes a combination of the primary light and the secondary light. The color of the output light may be tuned by adjusting a color parameter of the output light. The adjustment includes adding a color tuning material at a location in the housing interior where primary light is incident on the color tuning material. The color tuning material is configured for emitting auxiliary light in response to the incident primary light. Subsequently, the lighting device produces color-tuned output light that includes a combination of the primary light, the secondary light and the auxiliary light.
17 Citations
29 Claims
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1. A lighting device, comprising:
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a housing enclosing a housing interior and comprising a light exit for outputting a combination of primary light, secondary light, and auxiliary light; a light source configured for emitting a primary light beam of a primary wavelength through the housing interior; a light converter comprising a luminescent material facing the housing interior and configured for emitting secondary light of one or more wavelengths different from the primary wavelength, in response to excitation by the primary light beam; and a color tuning material optically aligned with the light source and configured for emitting auxiliary light in response to incidence by the primary light beam. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for tuning a color of output light produced by a lighting device, the lighting device comprising a housing interior, a light exit, a light source, and a light converter, the method comprising:
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outputting output light from the light exit by emitting primary light of a primary wavelength from the light source through the housing interior, wherein the light converter emits secondary light through the housing interior in response to excitation by the primary light, the secondary light has one or more wavelengths different than the primary wavelength, and the output light comprises a combination of the primary light and the secondary light; and adjusting a color parameter of the output light by adding a color tuning material at a location in the housing interior where primary light is incident on the color tuning material, the color tuning material being configured for emitting auxiliary light in response to the incident primary light, wherein subsequent operation of the lighting device produces color-tuned output light comprising a combination of the primary light, the secondary light and the auxiliary light. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A method for tuning a color of output light produced by a lighting device, the lighting device comprising a housing interior, a light exit, a light source, and a light converter, the method comprising:
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evaluating output light emanating from the light exit and produced by emitting primary light of a primary wavelength from the light source through the housing interior, wherein the light converter emits secondary light through the housing interior in response to excitation by the primary light, the secondary light has one or more wavelengths different than the primary wavelength, and the output light comprises a combination of the primary light and the secondary light; determining whether the color of the output light should be tuned; and if it is determined that the color of the output light should be tuned, adding a color tuning material at a location in the housing interior where primary light is incident on the color tuning material, the color tuning material being configured for emitting auxiliary light in response to the incident primary light, wherein after tuning the color the lighting device produces color-tuned output light in which the auxiliary light is combined with the primary light and the secondary light. - View Dependent Claims (29)
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Specification