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Potential for LED solar simulators

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conference contribution
posted on 2015-06-03, 12:30 authored by Foteini Plyta, Tom BettsTom Betts, Ralph Gottschalg
LED solar simulators have been discussed recently as a potential next generation solar simulator. This contribution evaluates the possibilities of generating a light field of appropriate spectrum with good uniformity. LEDs have very different optical characteristics compared to standard lights and this needs to be considered in the optical design. The aim in this paper is to achieve a close spectral match to the AM1.5 solar spectrum from 350nm to 1300nm. A total irradiance of 1000 W/m2 needs to be acquired. Additionally, the non-uniformity of light needs to be equal to or less than 1%. The key to mix spectra and achieve the desired intensity and uniformity is the optics. This paper evaluates different optical layouts to assess the potential for fully LED based solar simulators. The TIRs perform better collecting more light than other optics tested.



  • Mechanical, Electrical and Manufacturing Engineering

Research Unit

  • Centre for Renewable Energy Systems Technology (CREST)

Published in

39th IEEE Photovoltaic Specialists Conference


0701 - 0705


PLYTA, F., BETTS, T.R. and GOTTSCHALG, R., 2013. Potential for LED solar simulators. IN: IEEE 39th Photovoltaic Specialists Conference (PVSC) 16-21 June 2013, Tampa, Florida, USA, pp.0701-0705.




  • AM (Accepted Manuscript)

Publisher statement

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Publication date



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  • en


Tampa, Florida, USA

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