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AssigneeRockwell Collins, Inc.
InventorsAlbert N. Stuppi, Rick J. Johnson, Joseph H. Briley, Donald E. Mosier, William G. Perreault
Estimating the term…
A variably controlled LCD backlight is disclosed. The backlight includes a first light source that emits light within a first spectral power distribution and has a first radiant power output. A second light source emits light within a second spectral power distribution and has a second radiant power output. A detector detects the first and second radiant power outputs. A processor is connected to the detector and calculates chromaticity and luminance values of the emitted light based on the first and second radiant power outputs. The processor compares the calculated chromaticity and luminance values with desired chromaticity and luminance values, respectively. A controller is operationally connected to the processor and adjusts one or more of the first radiant power output and the second radiant power output in response to a difference between the calculated chromaticity and luminance values and the desired chromaticity and luminance values.
A variably controlled LCD backlight, comprising:
A method of controlling chromaticity and luminance levels of
An optical feedback and control system for an LCD backlight having a first light source and a second light source, each of the light sources emitting light having a different spectral power distribution, the system comprising:
Dependencies are inferred from the claim text.