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Proceedings Paper

LEDs as indicators, illuminators, and full color displays
Author(s): Mark Hodapp
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Paper Abstract

LED technology has come a long way since its humble beginnings as the HP-35 calculator display. Today's LEDs exceed the luminous efficiency of filtered incandescent bulbs. The technology is rapidly advancing. New colors and higher efficiencies are available today that were unheard of even two years ago. This technology tutorial will cover the latest advances in LED technology worldwide. New materials, such as AlInGaP and GaN can provide luminous efficiencies over 20 lumens/watt with colors such as blue, green, yellow, and red. This technology tutorial will show how LEDs can be assembled into large area full-color displays for applications like traffic signals, intelligent highway warning signs, and advertising billboards.

Paper Details

Date Published: 30 August 2017
PDF: 10 pages
Proc. SPIE 10317, Spectrally Selective Surfaces for Heating and Cooling Applications, 1031706 (30 August 2017); doi: 10.1117/12.2284052
Show Author Affiliations
Mark Hodapp, Hewlett-Packard Co. (United States)

Published in SPIE Proceedings Vol. 10317:
Spectrally Selective Surfaces for Heating and Cooling Applications
Claes-Göran Granqvist, Editor(s)

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