Light emitting diode (LED) lighting system providing precise color control
First Claim
1. A lighting apparatus, comprising:
- a white light emitting diode (LED) and a red-green-blue (RGB) LED disposed on a mounting and at least partially enclosed by a housing, the RGB LED capable of producing red, green and blue components of light;
a first LED driver to control current to the white LED;
a second LED driver to control current to the RGB LED; and
a microcontroller electrically connected to the first and second LED drivers;
wherein;
the second LED driver further comprises at least one 10-bit register that receives data for at least one component of the light emitted by the RGB LED; and
the received data comprises a value representing a change of color and intensity from a value representing a current color and intensity of at least the RGB LED for a particular color of the RGB LED.
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Accused Products
Abstract
A lighting apparatus comprising a white LED and a RGB LED disposed on a mounting and at least partially enclosed by a housing. The RGB LED produces red, green and blue components of light. A white LED driver controls current to the white LED and a RGB LED driver controls current to the RGB LED. A lighting system including the lighting apparatus and a system controller having a memory in which preset lighting programs are stored. A method for method for providing wash lighting comprising the steps of emitting a current color and intensity from a white LED and from a RGB LED, receiving data representing a change of color and intensity from the current color and intensity for at least the RGB LED and emitting white light that is on the Planckian locus in the CIE 1931 chromaticity diagram.
108 Citations
23 Claims
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1. A lighting apparatus, comprising:
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a white light emitting diode (LED) and a red-green-blue (RGB) LED disposed on a mounting and at least partially enclosed by a housing, the RGB LED capable of producing red, green and blue components of light; a first LED driver to control current to the white LED; a second LED driver to control current to the RGB LED; and a microcontroller electrically connected to the first and second LED drivers; wherein; the second LED driver further comprises at least one 10-bit register that receives data for at least one component of the light emitted by the RGB LED; and the received data comprises a value representing a change of color and intensity from a value representing a current color and intensity of at least the RGB LED for a particular color of the RGB LED. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A lighting system, comprising:
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a lighting apparatus comprising; a white light emitting diode (LED) and a red-green-blue (RGB) LED disposed on a mounting and at least partially enclosed by a housing, the RGB LED capable of producing red, green and blue components of light; a first LED driver to control current to the white LED; a second LED driver to control current to the RGB LED, the second LED driver comprising at least one 10-bit register that receives data for at least one component of the light emitted by the RGB LED, wherein the received data comprises a value representing a change of color and intensity from a value representing a current color and intensity of at least the RGB LED for a particular color of the RGB LED; and a microcontroller electrically connected to the first and second LED drivers; and the lighting system further comprising; a system controller including a memory to store preset lighting programs. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A method for providing wash lighting, the method comprising:
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emitting a current color and intensity from a white light emitting diode (LED) and from a red-green-blue (RGB) LED; receiving data comprising a value representing a change of color and intensity from a value representing the current color and intensity of at least the RGB LED for a particular color of the RGB LED; and emitting white light that is on the Planckian locus in the International Commission on Illumination (CIE) 1931 chromaticity diagram. - View Dependent Claims (21, 22, 23)
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Specification