User control modality for LED color tuning

A controllable-lighting apparatus, comprising:

• an LED array having at least one desaturated red LED, at least one desaturated green LED, and at least one desaturated blue LED;
• and
• color-tuning and luminous-flux control devices including:
• a correlated color temperature (CCT)-control device configured to be adjusted by an end-user to a desired color temperature of the LED array, the CCT-control device being further configured to produce an output signal corresponding to the desired color temperature;
• a Duv-control device configured to be adjusted by an end-user to a desired Duv in which Duv is a distance from a black-body line (BBL) of the LED array, the Duv-control device being further configured to produce an output signal corresponding the desired Duv;
• and
• a flux-control device configured to be adjusted by an end-user to a desired luminous-flux value of the LED array, the flux-control device being further configured to produce an output signal corresponding to the desired luminous-flux value,
• the desired color temperature, the desired Duv, and the desired luminous-flux value provided by the LED array based on a monotonic correlation between the output signals from the CCT-control device, the Duv-control device, and the flux-control device and the desired color temperature, the desired Duv, and the desired luminous-flux value, respectively determined by at least one of an algorithm or a lookup table (LUT).

A method to set parameters for a multi-colored LED array, the method comprising:

• for each of a correlated color temperature (CCT)-output signal, a Duv-output signal, and a flux-output signal:
• monotonically correlate, using at least one of an algorithm or a lookup table (LUT), the CCT-output signal, the Duv-output signal, and the flux-output signal to a color temperature value, a Duv, in which Duv is a distance from a black-body line (BBL) value, and a luminous-flux value, respectively;
• send each of the correlated values to a controller for controlling a color temperature and intensity level of the LED array;
• and
• controlling an amount of current delivered to at least two colors of LEDs within the multi-colored LED array.