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Often task lighting refers to increasing illuminance to better accomplish a specific activity. However, the illuminance level is not the only factor governing visibility. Contrast is also important, and a poorly positioned light source may cause contrast reduction, resulting in loss of visibility. The most important purpose of task lighting in the office is not increasing illuminance, but improving contrast. General lighting can be reduced because task lighting provides focused light where needed.
Adjustable task lighting system using liquid crystals
Adjustable task lighting system using liquid crystals. A computer-implemented method includes receiving, using a user interface element associated with an adjustable task lighting module, user input representing a selected illumination beam pattern for light emitted by the adjustable task lighting module. The method also includes determining a control voltage based on the user input. Thereafter, the method includes controlling an adjustable voltage source associated with the adjustable task lighting module to provide the determined control voltage to a configurable liquid crystal element of the adjustable task lighting module to configure the adjustable task lighting module to emit light having the selected illumination beam pattern.
Owner:GM GLOBAL TECHNOLOGY OPERATIONS LLC