20140239841 | LED LAMP WITH ADJUSTABLE COLOR - A color adjustable lamp. The lamp includes a first white emitter source having a plurality of colors so as to emit a first combined spectrum of light. A first drive signal having a first plurality of pulses at a first logic level and a second plurality of pulses at a second logic level operably controls the first white emitter source. The first and second pluralities of pulses having a first duty cycle. Changing a ratio of the pulses of the first and second pluralities, the first duty cycle, or both, changes the first combined spectrum. | 08-28-2014 |