29 January 2008 LED light source for projection displays
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Abstract
Two novel LED recycling schemes using either recycling light pipes or recycling "collars" show promise in significantly increasing the brightness of the LED sources. Preliminary experimental data show significant brightness enhancement, especially with a relatively high chip reflectivity and/or high mirror blockage factor. Further improvement may be expected when various system parameters are optimized.
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George Ouyang, Kenneth Li, "LED light source for projection displays", Proc. SPIE 6911, Emerging Liquid Crystal Technologies III, 69110Z (29 January 2008); doi: 10.1117/12.785546; https://doi.org/10.1117/12.785546
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