System and method for regulation of solid state lighting
First Claim
1. A method of varying an intensity of light emitted from a light emitting diode, the method comprising:
- receiving an input control signal for an intensity level;
retrieving a first parameter of a plurality of parameters stored in a memory, wherein the first parameter designates, for the intensity level, a combination of a first electrical biasing for the light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift;
using the first parameter, determining an input electrical biasing control signal; and
operating the light emitting diode using input electrical biasing control signal to provide the intensity level.
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Accused Products
Abstract
Exemplary embodiments of the invention provide a system, apparatus, and method of controlling an intensity and spectrum of light emitted from a solid state lighting system. The solid state lighting has a first emitted spectrum at full intensity and at a selected temperature, with a first electrical biasing for the solid state lighting producing a first wavelength shift, and a second electrical biasing for the solid state lighting producing a second, opposing wavelength shift. Exemplary embodiments provide for receiving information designating a selected intensity level or a selected temperature; and providing a combined first electrical biasing and second electrical biasing to the solid state lighting to generate emitted light having the selected intensity level and having a second emitted spectrum within a predetermined variance of the first emitted spectrum over a predetermined range of temperatures.
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Citations
117 Claims
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1. A method of varying an intensity of light emitted from a light emitting diode, the method comprising:
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receiving an input control signal for an intensity level; retrieving a first parameter of a plurality of parameters stored in a memory, wherein the first parameter designates, for the intensity level, a combination of a first electrical biasing for the light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; using the first parameter, determining an input electrical biasing control signal; and operating the light emitting diode using input electrical biasing control signal to provide the intensity level. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A lighting system having variable intensity, wherein the system is couplable to a user interface for input of an intensity level of a plurality of intensity levels, the lighting system comprising:
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a light emitting diode, wherein a first electrical biasing for the light emitting diode is configured to produce a first wavelength shift, and wherein a second electrical biasing for the light emitting diode is configured to produce a second wavelength shift that is opposed to the first wavelength shift; a driver circuit coupled to the light emitting diode, wherein the driver circuit is configured to provide, in response to a first input operational signal, a combination of the first electrical biasing and the second electrical biasing to the light emitting diode; a memory storing a plurality of parameters, wherein a first parameter of the plurality of parameters corresponds to the intensity level and designates the combination of the first electrical biasing and the second electrical biasing; and a controller coupled to the driver circuit, wherein the controller is configured to retrieve the first parameter from the memory and generate the first input operational signal to provide the intensity level. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 65)
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66. An illumination control method for a light emitting diode providing emitted light, the method comprising:
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receiving an input control signal designating a first lighting effect; retrieving a first parameter of a plurality of parameters stored in a memory, wherein the first parameter designates, for the first lighting effect, a combination of a first electrical biasing for the light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; using the first parameter, determining an input electrical biasing control signal; and using the input electrical biasing control signal, operating the light emitting diode with a time-averaged modulation of forward current to provide the first lighting effect within a dimming cycle.
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67. A method of controlling an intensity of light emitted from a light emitting diode with compensation for spectral changes due to temperature variation, wherein the light emitting diode has a first emitted spectrum at full intensity, the method comprising:
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receiving an input control signal designating an intensity level; determining a temperature associated with the light emitting diode; retrieving a first parameter of a plurality of parameters stored in a memory, wherein the first parameter designates, for the intensity level and the determined temperature, a combination of a first electrical biasing for the light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; using the first parameter, determining an input electrical biasing control signal; and operating the light emitting diode using the input electrical biasing control signal to provide the intensity level over a predetermined range of temperatures and having a second emitted spectrum within a predetermined variance of the first emitted spectrum. - View Dependent Claims (68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80, 81, 82, 83)
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84. A computer-readable storage medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
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receive an input control signal for an intensity level; retrieve a first parameter of a plurality of parameters, wherein the first parameter designates, for the intensity level, a combination of a first electrical biasing for a light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; determine an input electrical biasing control signal using the first parameter; and operate the light emitting diode using the input electrical biasing control signal to provide the intensity level. - View Dependent Claims (85, 86, 87, 88, 89, 90, 91, 92, 93)
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94. A computer-readable storage medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
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generate a first electrical biasing for a light emitting diode, wherein the first electrical biasing produces a first wavelength shift; generate a second electrical biasing for the light emitting diode, wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; provide, in response to a first input operational signal, a combination of the first electrical biasing and the second electrical biasing; and store a plurality of parameters, wherein a first parameter of the plurality of parameters corresponds to the intensity level for the light emitting diode and designates the combination of the first electrical biasing and the second electrical biasing. - View Dependent Claims (95, 96, 97, 98, 99, 100, 101, 102, 103, 104)
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105. A computer-readable storage medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
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receive an input control signal designating a first lighting effect; retrieve a first parameter of a plurality of parameters, wherein the first parameter designates, for the first lighting effect, a combination of a first electrical biasing for a light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; determine an input electrical biasing control signal using the first parameter; and use the input electrical biasing control signal to operate the light emitting diode with a time-averaged modulation of forward current to provide the first lighting effect within a dimming cycle.
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106. A computer-readable storage medium having instructions stored thereon that, in response to execution by a computing device, cause the computing device to:
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receive an input control signal designating an intensity level for a light emitting diode having a first emitted spectrum at full intensity; determine a temperature associated with the light emitting diode; retrieve a first parameter of a plurality of parameters, wherein the first parameter designates, for the intensity level and the determined temperature, a combination of a first electrical biasing for the light emitting diode and a second electrical biasing for the light emitting diode, wherein the first electrical biasing produces a first wavelength shift, and wherein the second electrical biasing produces a second wavelength shift that is opposed to the first wavelength shift; determine an input electrical biasing control signal using the first parameter; and operate the light emitting diode using the input electrical biasing control signal to provide the intensity level over a predetermined range of temperatures and having a second emitted spectrum within a predetermined variance of the first emitted spectrum. - View Dependent Claims (107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117)
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Specification