Combined Experimental and Monte-Carlo Ray-Tracing Approach for Optimizing Light Extraction in LED COB Modules

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Sample</td><td align="center">Encapsulation</td><td align="center">Gain of light extraction (simulation)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left" rowspan="2">COB 1</td><td align="center">Ellipsoidal shape</td><td align="center">1</td></tr><tr><td align="center"><img alt="385345.tab.001" src="https://static.hindawi.com/articles/isrn/volume-2013/385345/figures/385345.tab.001.jpg"/> <br/>Real shape</td><td align="center">1.045</td></tr><tr><td align="left" colspan="3"><hr/></td></tr><tr><td align="left" rowspan="2">COB 2</td><td align="center">Ellipsoidal shape</td><td align="center">1</td></tr><tr><td align="center"><img alt="385345.tab.002" src="https://static.hindawi.com/articles/isrn/volume-2013/385345/figures/385345.tab.002.jpg"/> <br/>Real shape</td><td align="center">1.033</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Comparative light extraction efficiencies for COB modules, depending on their encapsulation shapes (ellipsoidal or ball-shape).

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Table 1: Combined Experimental and Monte-Carlo Ray-Tracing Approach for Optimizing Light Extraction in LED COB Modules 