System and method for regulation of solid state lighting

A lighting system having variable intensity, the system comprising:

• at least one or more substantially similar light emitting diodes connected in a channel, a first electrical biasing for the at least one or more substantially similar light emitting diodes producing a first wavelength shift, and a second electrical biasing for the at least one or more substantially similar light emitting diodes producing a second wavelength shift which is opposed to the first wavelength shift;
• at least one driver circuit coupled to the at least one or more substantially similar light emitting diodes, the at least one driver circuit comprising a regulator and a power converter, the driver circuit adapted to respond to a plurality of input operational signals to provide a selected combination of the first electrical biasing and the second electrical biasing to the at least one or more substantially similar light emitting diodes;
• and
• at least one controller couplable to a user interface and coupled to the at least one driver circuit, the at least one controller further comprising a memory, the at least one controller adapted to retrieve a plurality of parameters stored in a memory, the plurality of parameters corresponding to a selected intensity level provided by the user interface and designating the selected combination of the first electrical biasing and the second electrical biasing;
• the at least one controller further adapted to convert the plurality of parameters into at least one input operational control signal to provide the selected intensity level with wavelength emission control.

An illumination control method for at least one or more substantially similar light emitting diodes providing emitted light, a first electrical biasing for the at least one or more substantially similar light emitting diodes producing a first wavelength shift, a second electrical biasing for the at least one or more substantially similar light emitting diodes producing a second wavelength shift which is opposed to the first wavelength shift, the method comprising:

• monitoring an input control signal, the input control signal designating a selected lighting effect;
• retrieving a plurality of parameters stored in a memory, the plurality of parameters designating a corresponding combination of the first electrical biasing and the second electrical biasing for the selected lighting effect;
• processing the plurality of parameters into at least one input electrical biasing control signal;
• and
• operating the at least one or more substantially similar light emitting diodes with a time-averaged modulation of forward current conforming to the at least one input electrical biasing control signal to provide the selected lighting effect within a dimming cycle.

A method of controlling an intensity of light emitted from at least one or more substantially similar light emitting diodes with compensation for spectral changes due to temperature variation, the at least one or more substantially similar light emitting diodes having a first emitted spectrum at full intensity, a first electrical biasing for the at least one or more substantially similar light emitting diodes producing a first wavelength shift, a second electrical biasing for the at least one or more substantially similar light emitting diodes producing a second wavelength shift which is opposed to the first wavelength shift, the method comprising:

• monitoring an input control signal, the input control signal designating a selected intensity level;
• determining a temperature associated with the at least one or more substantially similar light emitting diodes;
• retrieving a plurality of parameters stored in a memory, the plurality of parameters designating a corresponding combination of the first electrical biasing and the second electrical biasing for the selected intensity level and the determined temperature;
• processing the plurality of parameters into at least one input electrical biasing control signal;
• and
• operating the at least one or more substantially similar light emitting diodes with a time-averaged modulation of forward current conforming to the at least one input electrical biasing control signal to provide the selected intensity level over a predetermined range of temperatures and having a second emitted spectrum within a predetermined variance of the first emitted spectrum.