Patent ID: 7796034

Claim:
A method of controlling lighting in an illuminated common space, comprising the steps of: providing plural spaced apart light sources in the space, each of the light sources having plural solid-state lighting devices; sensing movement of people in the space relative to locations of the light sources; and in response to the sensing of people moving relative to the lamps, (a) automatically and individually adjusting the solid-state lighting devices in the respective plural light sources to a first lighting condition when people are in a first position relative to the respective light sources, wherein the respective light sources emit light having a first illumination level and a first CRI at a first electrical power level, and (b) automatically and individually adjusting the solid-state lighting devices in the respective plural light sources to a second lighting condition when people are in a second position relative to the respective light sources that is more distant than the first position, wherein the respective light sources emit light having the first illumination level and a second CRI that is less than the first CRI, the respective light sources operating at a second electrical power level when emitting light having the second CRI wherein the second electrical power level is less than the first electrical power level.