Light emitting diode luminaires with temperature feedback

A lamp comprising:

• a light engine having a least one light emitting diode;
• an interface through which the lighting characteristics for light being projected by the light emitting diode may be selected;
• a thermistor sensing circuit for monitoring temperature of the light engine;
• and
• a controller for adjusting electrical signal to energize the light emitting diodes of the light engine responsive to changes in temperature measured by the thermistor sensing circuit, the electrical signal being adjusted to provide the light characteristics selected through the interface at the temperature measured using the thermistor.

A lamp comprising:

• a light engine having a least one light emitting diode;
• an interface through which lighting characteristics for light being projected by the light emitting diode may be selected, wherein the lighting characteristic that is selected includes X, Y, and Z scale values of the International Commission (CIE) 1931 XYZ color space;
• a thermistor sensing circuit, wherein the thermistor sensing circuit monitors the temperature of the light engine;
• memory for storing a plurality of light settings that correlate temperature to pulse width modulation (MWM) values applied to the at least one light emitting diode of the light engine to provide colored light having X, Y and Z scale values from the International Commission (CIE) 1931 XYZ color space;
• and
• a controller that monitors temperature of the light engine with a thermistor sensing circuit, wherein changes in resistance measurements taken from the thermistor sensing are correlated to changes in the temperature of the light engine. Based on the temperature of the light engine measured using the thermistor sensing circuit, the controller can further select one of said plurality of light settings that correlate temperature to pulse width modulation (PWM) values applied to the at least one light emitting diode of the light engine to provide colored light having X, Y and Z scale values from the International Commission (CIE) 1931 XYZ color space for the light characteristic that was selected at the temperature of the light engine that was measured.