Poster (Scientific congresses and symposiums)
Achromatization of solar concentrator using diffractive optics
Languy, Fabian; Lenaerts, Cedric; Loicq, Jerôme et al.
200924th European Photovoltaic Solar Energy Conference and Exhibition
 

Files


Full Text
postervf.pdf
Author preprint (4.39 MB)
Download

All documents in ORBi are protected by a user license.

Send to



Details



Keywords :
solar concentration; diffractive optics; fresnel lens
Abstract :
[en] Photovoltaic energy suffers from payback time. High solar concentration (above 500 suns) is a very interesting way to reduce production cost. The use of lenses allows more flexibility to make light flux more uniform. In addition lenses are less prone to errors of manufacture and can be easily duplicated. Unfortunately, optical materials are very dependent on the wavelength which causes important chromatic aberrations. One can think about achromatic doublets but doublets are thick, heavy and require exotic glasses which make them expensive. During the conference, I would like to present an innovative way to achromatize solar concentrators using hybrid (refractive/diffractive) lenses. Indeed, an hybrid lens is as thin as a Fresnel lens and is made in only one glass. But diffractive lenses suffer from limited broadband diffraction efficiency due to spurious orders. To overcome the lake of efficiency we are investigating the use of multi-layer diffractive optical element. This technique allows to achieve an efficiency greater than 97% over the full visible spectrum using only three components (e.g. two optical elements + air).
Disciplines :
Physics
Author, co-author :
Languy, Fabian ;  Université de Liège - ULiège > Département de physique > Optique - Hololab
Lenaerts, Cedric ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Loicq, Jerôme ;  Université de Liège - ULiège > CSL (Centre Spatial de Liège)
Habraken, Serge ;  Université de Liège - ULiège > Département de physique > Optique - Hololab - CSL (Centre Spatial de Liège)
Language :
English
Title :
Achromatization of solar concentrator using diffractive optics
Publication date :
2009
Number of pages :
A0
Event name :
24th European Photovoltaic Solar Energy Conference and Exhibition
Event place :
Hambourg, Germany
Event date :
20-25 septembre 2009
Audience :
International
Available on ORBi :
since 15 February 2010

Statistics


Number of views
169 (22 by ULiège)
Number of downloads
140 (6 by ULiège)

Bibliography


Similar publications



Contact ORBi