METHOD AND APPARATUS FOR ESTIMATING INTENSITY OF ONE SPECTRUM OF LIGHT IN MIXED LIGHT, IN RESPONSE TO SENSED INTENSITIES OF ONE OR MORE OTHER SPECTRUMS OF LIGHT IN MIXED LIGHT

摘要

PROBLEM TO BE SOLVED: To provide a device that does not have a problem wherein an optical feedback system used by a lighting system such as an LCD backlight does not sufficiently measure the intensity of "visible red" wavelength in a mixed light.;SOLUTION: In one embodiment, light having a first spectrum is filtered from the mixed light. Light having a second spectrum, different from the first spectrum, is also filtered from the mixed light. An intensity of the light having the first spectrum, and an intensity of the light having the second spectrum, are then sensed. From the sensed intensities of the lights having the first and second spectrums, an intensity of light having a third spectrum is estimated.;COPYRIGHT: (C)2009,JPO&INPIT