Patent attributes
A light fixture includes light sources arranged in groups that each include one or more light sources. Each of the groups is repeatedly switched on and off according to a repeating pattern that includes at least three different combinations of which of the groups is switched on and which is switched off. A moving average of an intensity of one or more of the groups is substantially constant within a period of time spanning 10 seconds or more, wherein the moving average is based on a sample period of 1 second or less. A moving average of a total intensity of all of the groups is substantially constant within a period of time spanning 10 seconds or more, wherein the moving average is based on a sample period of 1 second or less. A period of time before the repeating pattern repeats is equal to or less than 1/10 second.
