System and method for producing white light using LEDs
First Claim
1. A light system comprising:
- a light source that includes at least one white light emitting diode (LED) and multiple color LEDs; and
a spectral feedback control system configured to detect light that is output from the light source and to adjust the light that is output from the light source in response to the light detection.
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Accused Products
Abstract
A system and method for generating white light involves using a combination of white, red, green, and blue LEDs to produce white light and adjusting the emitted light in response to feedback signals. A light system has a light source that includes at least one white LED and multiple color LEDs and a spectral feedback control system configured to detect light that is output from the light source and to adjust the light that is output from the light source in response to the light detection. The spectral feedback control system may include a color sensor configured to provide color-specific feedback signals, a controller configured to generate color-specific control signals in response to the color-specific feedback signals, and a driver configured to generate color-specific drive signals in response to the color-specific control signals.
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Citations
20 Claims
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1. A light system comprising:
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a light source that includes at least one white light emitting diode (LED) and multiple color LEDs; and
a spectral feedback control system configured to detect light that is output from the light source and to adjust the light that is output from the light source in response to the light detection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for operating a light system comprising:
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providing drive signals to a light source that includes at least one phosphor-converted white light emitting diode (LED) and multiple color LEDs;
detecting light that is generated in response to the drive signals;
generating feedback signals in response to the detected light; and
adjusting the drive signals that are provided to the light source.
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- 12. The method of claim 111 wherein detecting the light includes generating color-specific feedback signals.
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15. A light system comprising:
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an LCD panel;
a light source, in optical communication with the LCD panel, which includes at least one phosphor-converted white light emitting diode (LED) and multiple color LEDs; and
a spectral feedback control system configured to detect light that is output from the light source and to adjust the light that is output from the light source in response to the light detection. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification