Power calibration of multiple light sources in a display screen
AssigneePrysm, Inc.
InventorsChris Butler, Anand Budni
Life of this patent
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Abstract
A display device with multiple light sources includes a first detector for detecting a brightness of one or more different portions of the image formed on the display device, a second detector that measures output intensities of the light sources, and a controller that records correlation values that correlate input power settings of the light sources with the detected brightness and the measured output intensities. During operation of the display device, the controller applies the correlation values to determine the proper input power settings of the light sources so that brightness uniformity among the multiple light sources can be achieved.
Claims24
1-20. (canceled)
A system comprising:
- a display screen having an excitation side and a viewing side;
- two or more excitation sources;
- a polygon scanner having a plurality of reflective surfaces;
- a detector assembly, wherein the detector assembly is disposed on the excitation side of the display screen, wherein the detector assembly is capable of measuring an output intensity of each excitation source at a time interval after each reflective surface has been illuminated with swaths of imaging information to be painted and before a subsequent reflective surface has been illuminated with subsequent swaths of imaging information to be painted;
- and
- a signal modulation controller, wherein the signal modulation controller is capable of directing light to the detector assembly, then the polygon scanner and then the display screen.
A system comprising:
- a display screen having an excitation side and a viewing side, wherein the display screen is capable of rendering images in a time interval manner;
- two or more excitation sources;
- polygon scanner having a plurality of reflective surfaces;
- a detector assembly, wherein the detector assembly is disposed on the excitation side of the display screen;
- and
- a signal modulation controller, wherein the signal modulation controller is capable of directing light to the detector assembly, then the polygon scanner and then the display screen, wherein the signal modulation controller is capable of adjusting light emitted from the two or more excitation beams such that output intensity from one excitation source is reduced when compared to another excitation source, and wherein the signal modulation controller is capable of maintaining a brightness uniformity across the display screen.
Dependencies are inferred from the claim text.