LED backlight designs with the flow-line methods


An LED backlight has been designed using the flow-line design method. This method allows a very efficient control of the light extraction. The light is confined inside the guide by total internal reflection, being extracted only by specially calculated surfaces: the ejectors. Backlight designs presented here have a total optical efficiency of up to 80% (including Fresnel and absorption losses) with an FWHM below 30 degrees. The experimental results of the first prototype are shown.

Publication type: 
JRC-SCI Magazine
Published in: 
Optics Express Vol.20 N.S1, p.p. A62-A68
Publication date: 
January 2012
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