Dynamic color mixing LED device
AssigneeDialight Corporation
InventorGarrett J. Young
Life of this patent
Estimating the term…
Abstract
A dynamic color mixing LED device that includes a plurality of light emitting diode units. Each light emitting diode unit includes e.g. a first LED of a first color (e.g. red) and a second LED of a second color (e.g. green). A third LED of a third color (e.g. blue can also be provided). A controller supplies respective driving signals to each of the first LED, second LED, and third LEDs individually. The respective driving signals individually control relative intensity outputs of the respective first LED, second LED, and third LED. With such an individual control each of the light emitting diode units can be controlled to output different color signals.
Claims8
A dynamic color mixing device comprising:
- (a) at least one light emitting diode (LED) unit each including:
- (a1) a first LED of a first color;
- and
- (a2) a second LED of a second color;
- (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.
A dynamic color mixing device comprising:
- (a) at least one light emitting diode (LED) unit each including:
- (a1) a first LED of a first color;
- and
- (a2) a second LED of a second color;
- (b) means for supplying 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 means for supplying further individually frequency modulates the respective driving signals supplied to each of said first LED and said second LED to individually control their relative intensity outputs;
- and
- (c) means for sensing colors of light output from at least a portion of said at least one LED unit;
- and
- wherein said means for supplying further controls the frequency modulation based on the sensed colors.
Dependencies are inferred from the claim text.