Systems and methods for controlling an output of a light fixture
First Claim
1. A method of controlling an output of a light fixture, the light fixture including four or more light sources, the method comprising:
- receiving a first input parameter corresponding to a first color point within a color space;
receiving a second input parameter associated with a desired intensity for the first color point;
determining a white point based on a relationship between the second input parameter and the color temperature of a black-body radiator, the white point corresponding to a second color point within the color space;
selecting a color temperature transform based on the white point;
calculating a third color point within the color space based on the color temperature transform, the color temperature transform defining a relationship between the first color point and the third color point, the third color point being different than the first color point, and the third color point being different than the second color point;
determining a respective light source output value for each of the four or more light sources based on the third color point; and
driving each of the four or more light sources at the respective light source output value to produce the output of the light fixture.
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Accused Products
Abstract
Systems and methods for controlling an output of a light fixture. A light fixture of one construction includes four or more light sources and is configured to produce an output that mimics the color temperature changes of an ideal black-body radiator based on one or more input parameters. The input parameters correspond to, for example, a desired target color and an intensity for the desired target color. A white point setting is determined based on the one or more input parameters and a relationship between the one or more input parameters and the color temperature of an ideal black-body radiator. A color temperature transform is selected based on the white point color temperature setting, and is used to determine a color coordinate corresponding to a modified target color. A set of light source output values corresponding to the modified target color are identified, and the light sources are driven to the identified output values.
126 Citations
20 Claims
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1. A method of controlling an output of a light fixture, the light fixture including four or more light sources, the method comprising:
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receiving a first input parameter corresponding to a first color point within a color space; receiving a second input parameter associated with a desired intensity for the first color point; determining a white point based on a relationship between the second input parameter and the color temperature of a black-body radiator, the white point corresponding to a second color point within the color space; selecting a color temperature transform based on the white point; calculating a third color point within the color space based on the color temperature transform, the color temperature transform defining a relationship between the first color point and the third color point, the third color point being different than the first color point, and the third color point being different than the second color point; determining a respective light source output value for each of the four or more light sources based on the third color point; and driving each of the four or more light sources at the respective light source output value to produce the output of the light fixture. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of controlling an output of a light fixture, the light fixture including four or more light sources, the method comprising:
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receiving a set of input parameters, the set of input parameters corresponding to a first color point within a color space and an intensity for the first color point; determining a color temperature setting based on a relationship between the set of input parameters and the color temperature of a black-body radiator, the color temperature setting corresponding to a second color point within the color space; determining a color temperature transform based on the color temperature setting; calculating a third color point within the color space based on the color temperature transform, the color temperature transform defining a relationship between the first color point and the third color point, the third color point being different than the first color point, and the third color point being different than the second color point; determining a respective light source output value for each of the four or more light sources based on the third color point; and driving each of the four or more light sources at the respective light source output value to produce the output of the light fixture. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for controlling the output of a light fixture, the system including:
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four or more light sources; and a controller configured to receive a first input parameter corresponding to a first color point within a color space, receive a second input parameter associated with a desired intensity for the first color point, determine a white point based on a relationship between the second input parameter and the color temperature of a black-body radiator, the white point corresponding to a second color point within the color space, select a color temperature transform based on the white point, calculate a third color point within the color space based on the color temperature transform, the color temperature transform defining a relationship between the first color point and the third color point, the third color point being different than the first color point, and the third color point being different than the second color point, determine a respective light source output value for each of the four or more light sources based on the third color point, and drive each of the four or more light sources at the respective light source output value to produce the output of the light fixture. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification