Method for controlling a tunable white fixture using a single handle
First Claim
1. A lighting fixture, comprising:
- a controller configured for receiving one or more values from a handle having a range of positions divided into multiple zones, and for controlling a driver,the driver configured for controlling a plurality of LEDs to produce light output having a combination of parameters, andthe plurality of LEDs,wherein the controller is further configured for;
determining whether a value received from the handle is within a first zone of the multiple zones;
when the received value is within the first zone, determining a first combination of parameters including;
i) a constant parameter that has a constant level within the first zone, wherein the constant parameter is either intensity or color temperature,ii) a variable parameter that has a first variable level, the first variable level dependent upon the value within the first zone, wherein the variable parameter is one of either the intensity or the color temperature that is not the constant parameter,iii) an additional parameter that has an additional variable level, the additional variable level dependent upon the value within the first zone,wherein the first combination of parameters has at least the constant level, the first variable level, and the additional variable level; and
instructing the driver to control the plurality of LEDs to produce light output based on the first combination of parameters.
1 Assignment
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Accused Products
Abstract
A system allows a light fixture to have a wider range of color temperatures (CCT) while limiting the warmest temperature reached at full intensity. The CCT of the light output may be controlled independently of intensity across a certain range of CCT and dependent on intensity across another range. In an implementation, both intensity and CCT may be adjusted from a single handle, where the interface positions may be divided into multiple zones. In another implementation, intensity may be adjusted from a first handle, while CCT may be adjusted from a second handle. The CCT of the light output may be limited to cooler levels when the intensity is higher, and/or the intensity of the light may be limited to lower levels when the CCT is warmer.
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Citations
20 Claims
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1. A lighting fixture, comprising:
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a controller configured for receiving one or more values from a handle having a range of positions divided into multiple zones, and for controlling a driver, the driver configured for controlling a plurality of LEDs to produce light output having a combination of parameters, and the plurality of LEDs, wherein the controller is further configured for; determining whether a value received from the handle is within a first zone of the multiple zones; when the received value is within the first zone, determining a first combination of parameters including; i) a constant parameter that has a constant level within the first zone, wherein the constant parameter is either intensity or color temperature, ii) a variable parameter that has a first variable level, the first variable level dependent upon the value within the first zone, wherein the variable parameter is one of either the intensity or the color temperature that is not the constant parameter, iii) an additional parameter that has an additional variable level, the additional variable level dependent upon the value within the first zone, wherein the first combination of parameters has at least the constant level, the first variable level, and the additional variable level; and instructing the driver to control the plurality of LEDs to produce light output based on the first combination of parameters. - View Dependent Claims (2, 3, 4, 5)
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6. A lighting fixture, comprising:
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a controller configured for receiving multiple values from multiple handles, each of the multiple handles having a range of positions divided into multiple zones, the controller further configured for controlling a driver, the driver configured for instructing a plurality of LEDs to produce light output; and the plurality of LEDs; wherein the controller is further configured for; determining whether a first value received from a first handle of the multiple handles is within a first zone of the first handle; determining whether a second value received from a second handle of the multiple handles is within a second zone of the second handle; when the first value is within the first zone and the second value is within the second zone, determining a requested combination of parameters including; i) a constant parameter that has a constant level within the first zone, wherein the constant parameter is either intensity or color temperature, ii) a variable parameter that has a first variable level, the first variable level dependent upon the second value within the second zone, wherein the variable parameter is one of either the intensity or the color temperature that is not the constant parameter, iii) an additional parameter that has an additional variable level, the additional variable level dependent upon the second value within the second zone, wherein the requested combination of parameters has at least the constant level, the first variable level, and the additional variable level; determining whether the requested combination of parameters corresponds to one of a plurality of allowed combinations of parameters; when the requested combination of parameters corresponds to a first allowed combination of parameters, instructing the driver to control the plurality of LEDs to produce light output based on the first allowed combination of parameters; and when the requested combination of parameters corresponds to a combination outside the plurality of allowed combinations; adjusting at least one of the first variable level or the additional variable level to obtain a second allowed combination of parameters having the constant level and the adjusted one of the first variable level or the additional variable level, and instructing the driver to control the plurality of LEDs to produce light output based on the second allowed combination of parameters. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for controlling light output of a light fixture, the method comprising:
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receiving one or more values from a handle having a range of positions divided into multiple zones, determining whether a value received from the handle is within a first zone of the multiple zones; when the received value is within the first zone, determining a first combination of parameters including; i) a constant parameter that has a constant level within the first zone, wherein the constant parameter is either intensity or color temperature, ii) a variable parameter that has a first variable level, the first variable level dependent upon the value within the first zone, wherein the variable parameter is one of either the intensity or the color temperature that is not the constant parameter, iii) an additional parameter that has an additional variable level, the additional variable level dependent upon the value within the first zone, wherein the first combination of parameters has at least the constant level, the first variable level, and the additional variable level; and instructing a driver to control a plurality of LEDs to produce light output based on the first combination of parameters. - View Dependent Claims (17, 18, 19, 20)
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Specification