LED lighting assembly using a dynamic color mixing scheme
AssigneeB/E Aerospace, Inc.
InventorsLuis Sam, Eric Johannessen, Brendan Upton
Life of this patent
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Abstract
An LED lighting assembly onboard an aircraft includes at least one light emitting diode (LED) unit and a controller. The LED unit includes any number of primary LEDs and at least two white LEDs. The controller is configured to supply respective driving signals to each of the LEDs, the respective driving signals individually controlling relative intensity outputs of the respective LEDs. The controller is further configured to display a desired color point by continuously driving the white LEDs while not driving at least one of the other LEDs.
Claims10
An LED lighting assembly comprising:
- a plurality of primary LEDs each outputting a respective color;
- at least two additional LEDs each outputting a white color;
- a controller configured to supply respective driving signals to each of the plurality of primary LEDs and the two white LEDs, the respective driving signals individually controlling relative intensity outputs of the respective primary LEDs and the two white LEDs,
- wherein the controller is further configured to display a desired color point by:
- continuously driving the two white LEDs while not driving at least one of the plurality of primary LEDs,
- determining a ratiometric mix of the output of the primary LEDs to match the desired color point;
- determining a ratiometric mix of the output of the two white LEDs to obtain a white mix;
- and
- determining a metameric equivalent of the desired color point by substituting the output of one of the primary LEDs with the white mix.
A method of controlling lighting within an aircraft, comprising:
- receiving a desired color selection via a user interface aboard the aircraft, the desired color selection including an indication of an event associated with a desired color point;
- driving a plurality of LEDs via a controller to generate a plurality of metameric equivalents of the desired color point;
- and
- selecting one of the generated plurality of metameric equivalents of the desired color point based on the indicated event associated with the desired color point.
Dependencies are inferred from the claim text.