Title :
Accurate Sensing of LED Spectra via Low-Cost Spectrum Sensors
Author :
Chang, Cheng-Chun ; Chen, Chien-Chou ; Kurokawa, Umpei ; Choi, Byung Il
Author_Institution :
Dept. of Electr. Eng., Nat. Taipei Univ. of Technol., Taipei, Taiwan
Abstract :
As a variety of light-emitting diode (LED) applications rapidly develops, accurate specifications of LED characteristics are increasingly important. In this work, we present a method for accurate measurement of LED spectra using a novel low-cost filter-array spectrum sensor. The measurement accuracy is further enhanced using particle swarm optimization. As a result, the proposed sensing method not only matches the performance of a professional optical spectrometer, but also is suitable for low-cost consumer applications, wherever the precise spectrum (or color) measurement is demanded.
Keywords :
light emitting diodes; optical filters; optical sensors; optical variables measurement; particle swarm optimisation; semiconductor device testing; spectrometers; LED spectra accurate sensing; color measurement; light emitting diode; low cost filter array spectrum sensor; low cost spectrum sensors; measurement accuracy; optical spectrometer; particle swarm optimization; Light emitting diodes; Optical filters; Optical sensors; Optical variables measurement; Sea measurements; Wavelength measurement; Filter-array spectrum sensor on-a-chip; light-emitting diode (LED) measurement; particle swarm optimization (PSO);
Journal_Title :
Sensors Journal, IEEE
DOI :
10.1109/JSEN.2011.2147302
