Patent ID: 8098024
Filing Date: 2012-01-17
Classification: H05B

Abstract:
1. A method for adjusting lumen output of a light source having a lamp lumen depreciation characteristic, the lumen output being at least partially dependent on a factor, wherein the factor is controllable, comprising: a. obtaining data regarding the lumen depreciation characteristic of the light source over time; b. obtaining information regarding the lumen output response of the light source to changes in the controllable factor; c. identifying lumen output requirements; d. predicting at least one operating time to increase lumen output using the lumen depreciation data; e. monitoring the operating time of the light source; and f. adjusting the controllable factor with the actuator such that lumen output is adjusted to at or near a target level, wherein the adjustment to the controllable factor is based on the information regarding the relationship between the controllable factor and lumen output.