Patent ID: 8476845

Claim:
A method of adjusting brightness of a light source controlled by a dimmer, the method comprising the steps of: determining a lowest dimmer setpoint and an average power to the light source at the lowest dimmer setpoint, wherein determining the lowest dimmer setpoint comprises: (i) monitoring a power signal supplied to the light source; (ii) identifying, based on a characteristic of the power signal, a lowest dimmer setpoint and a current dimmer setting; (iii) setting the brightness of the light source to a pre-determined minimum level based at least in part on the lowest dimmer setpoint; and (iv) adjusting the brightness of the light source according to a difference between the current dimmer setting and the lowest dimmer setpoint; and setting an average power supplied to the light source based on a setting of the dimmer relative to the average power at the lowest dimmer setpoint.