Patent ID: 7119500
Filing Date: 2006-10-10
Classification: H05B,Y10S

Abstract:
1. A dynamic color mixing device comprising: (a) at least one light emitting diode (LED) unit each including: (b) a controller configured to supply respective driving signals to each of said first LED and second LED individually, said respective driving signals individually controlling relative intensity outputs of said respective first LED and second LED; wherein said at least one LED unit further includes (a3) a third LED of a third color, and said controller is further configured to supply a respective driving signal to individually control a relative intensity output of said third LED; wherein said controller individually frequency modulates the respective driving signals supplied to each of said first LED, second LED, and third LED to individually control their relative intensity outputs and further amplitude modulates the respective driving signals supplied to each of said first LED, second LED, and third LED; said dynamic color mixing device further comprising: a color sensor array configured to sense colors of light output from at least a portion of said at least one LED unit; and wherein said controller is further configured to control the frequency modulation based on the sensed colors.