LED Characterization for Production Quality Control
LEDs have evolved rapidly from use as simple indicator lights to use in more complex arrays and assemblies for illumination, displays, instrument panels, projectors, backlights, and medical and scientific instrumentation. These more sophisticated applications are driving the need for increasingly stringent luminosity and chromaticity measurements. In a cell phone display, for example, the color and luminance must be uniform and must not degrade over time. A clear difference exists between
Photonics Spectra, April 2008