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1992, Applied Optics
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2013, International Journal of Optics and Applications
1997, Journal of the Optical Society of America A
2004, Proceedings of …
The Simultaneous Multiple Surfaces design method (SMS), proprietary technology of Light Prescription Innovators (LPI), was developed in the early 1990's as a two dimensional method. The first embodiments had either linear or rotational symmetry and found applications in photovoltaic ...
Energies
Concentrator Photovoltaic (CPV) technology, by using efficient optical elements, small sizes and high efficiency multi-junction solar cells, can be seen as a bright energy source to produce more cost-effective electricity. The main and basic idea is to replace the use of expensive solar cells with less expensive optical elements made from different materials. This paper aims to give to the readers a rapid and concise overview of CPV and the main characteristics to be considered when designing a CPV system. It reviews the main optical configurations presented in the literature, their advantages and drawbacks, as well as the recent progress in the concentration ratio and the major performances achieved in the field. The paper considers the more recent works, their optical designs, as well as their optical and electrical performances. It also relates the major achievements on the industrial side with the major milestones in CPV developments.
2004, Nonimaging Optics and Efficient Illumination Systems
2009
2009
2018, Sergey Y. Yurish Editor. Advances in Optics: Reviews Book Series, Volume 3.
Preface It is my great pleasure to introduce the third volume of new Book Series ‘Advances in Optics: Reviews’ started by the IFSA Publishing in 2018. Three volumes were published in this year. The ‘Advances in Optics: Reviews’ Book Series is published as an Open Access Books in order to significantly increase the reach and impact of these volumes, which also published in two formats: electronic (pdf) with full-color illustrations and print (paperback). The third of three volumes of this Book Series has organized by topics of high interest. In order to offer a fast and easy reading of each topic, every chapter in this book is independent and self-contained. All chapters have the same structure: first an introduction to specific topic under study; second particular field description including sensing or/and measuring applications. Each of chapter is ending by complete list of carefully selected references with books, journals, conference proceedings and web sites. The Vol.3 is devoted to various topics of applied optics and contains 17 chapters written by 49 experts in the field from 14 countries: Australia, China, India, Israel, Italy, Japan, Malaysia, Mexico, The Netherlands, Poland, Taiwan, UK, USA and Vietnam. ‘Advances in Optics: Reviews’ Book Series is a comprehensive study of the field of optics, which provides readers with the most up-to-date coverage of optics, photonics and lasers with a good balance of practical and theoretical aspects. Directed towards both physicists and engineers this Book Series is also suitable for audiences focusing on applications of optics. A clear comprehensive presentation makes these books work well as both a teaching resources and a reference books. The book is intended for researchers and scientists in physics and optics, in academia and industry, as well as postgraduate students. I shall gratefully receive any advices, comments, suggestions and notes from readers to make the next volumes of ‘Advances in Optics: Reviews’ Book Series very interesting and useful. Dr. Sergey Y. Yurish Editor IFSA Publishing Barcelona, Spain.
2013, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration X
2017, International Journal of Optics and Applications
The transmission and reflection properties of nonimaging solar concentrators irradiated in direct mode by parallel light are investigated adopting original simulation methods. These methods were not limited to investigate useful properties for practical application of the concentrators, but were also used to study them as optical elements with specific transmission, absorption and reflection characteristics. In this work, we investigate the flux transmitted to the receiver and that back-reflected towards the entrance opening, by measuring the average number of reflections that the transmitted or reflected rays make on the internal wall of the concentrator. Results of this study are maps of the entrance opening, in which the different regions crossed by the transmitted or reflected rays are distinguishable and characterized by a different number of internal reflections. These maps are plotted for different values of the incidence angle of the parallel beam with respect to the optical axis of the concentrator. The presented simulation methods can be fruitfully applied to any other type of solar concentrator.
2015, Optics Express
2008
A new free-form XR Kohler concentrator is presented that combines high geometric concentration, high acceptance angle and high irradiance uniformity on the solar cell. This is achieved by modifying the optical surfaces to produce Kohler integration. Although the new optical surfaces (that is, the ones including Kohler integration) behave optically quite different from the ones that do not integrate, but from the macroscopic point of view they are very similar to them. This means that they can be manufactured with the same techniques (typically plastic injection molding or glass molding) and that their production cost is the same i.e., with a high potential for low cost and high optical efficiency. The present approach is completely new and allows keeping the acceptance angle at high values and the concentration factor without increasing the number of optical elements. The simulated optical performance of a Kohler integrating solar concentrator is presented. This concept is the first design combining non flat array of Kohler integrators with concentration optics.
2010, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VII
TELKOMNIKA (Telecommunication Computing Electronics and Control)
1998, Applied optics
2012, Journal of Optics
The collection properties of nonimaging "Rondine ® " PV solar concentrators are investigated by indoor measurements of the angle-resolved optical efficiency. We illustrate two different methods to draw the optical efficiency curve. The first one, briefly called as "direct method", is performed by producing a uniform and collimated beam of known flux impinging on the input aperture of the concentrator at different incidence angles, and by measuring the flux collected at the exit aperture. The second method, called "inverse method", is based on a reverse illumination procedure, whereby a lambertian diffused light is produced at the exit aperture of the concentrator, and the radiance of the beam transmitted backwards from the input aperture is measured at different directions in space. The obtained results are similar for the two methods, but the "inverse method" is largely to be preferred for the simplicity of the experimental apparatus and the ...
2010, Advances in Science and Technology
The light collection properties of different types of solar concentrators have been investigated by applying conventional and innovative methods of characterization [1, 2]. Four types of optical methods were applied: i) a “direct” method using a laser beam as light source; ii) a “direct” method using a parallel beam simulating the direct component of solar light; iii) a “direct” integral method using a lambertian light source simulating the diffuse component of solar light; iv) an “inverse” method using a lambertian light source applied at the receiver side, thereby reversing the light path. The optical properties derived by applying the above three methods were: i) the local optical collection efficiency, resolved on the entrance point and direction of incidence ii) the overall optical collection efficiency under collimated light, resolved on direction of incidence; iii) the spatial and angular distribution of flux on the receiver.
1984, Applied Optics
Sustainability
Solar energy has demonstrated promising prospects in satisfying energy requirements, specifically through solar photovoltaic (PV) technology. Despite that, the cost of installation is deemed as the main hurdle to the widespread uptake of solar PV systems due to the use of expensive PV material in the module. At this point, we argue that a reduction in PV cost could be achieved through the usage of concentrator. A solar concentrator is a type of lens that is capable of increasing the collection of sun rays and focusing them onto a lesser PV area. The cost of the solar module could then be reduced on the assumption that the cost of introducing the solar concentrator in the solar module design is much lower than the cost of the removed PV material. Static concentrators, in particular, have great promise due to their ability to be integrated at any place of the building, usually on the building facade, windows and roof, due to their low geometrical concentration. This paper provides a h...
The light collection properties of PhoCUS C-Module photovoltaic concentration units have been investigated by realizing a rugged “Mock-up” containing the primary refractive optics, a secondary optical element (SOE) and a receiver. To independently investigate the sole collection efficiency of the optical unit, the receiver was realized by an integrating sphere equipped with a photodetector, able to collect, with known efficiency, all the radiation reaching the receiver area. To investigate the optical efficiency of the whole C-Module photovoltaic concentration unit, a concentration silicon cell, pre-viously tested in the PhoCUS C-Modules, was used as receiver. Two methods were applied for the optical measurements, the conventional “direct” method using a parallel beam with solar divergence to irradiate the front side of concentrator, and the “inverse” method using a lambertian source applied in place of the concentrating cell in order to operate the concentrator in the reverse way.
2010, International Optical Design Conference and Optical Fabrication and Testing
2007, Optical Modeling and Measurements for Solar Energy Systems
2016
2017
With more than 30 Medium-Size Telescopes (MST) located in both North and South hemispheres, the Cherenkov Telescope Array (CTA) shall be the largest cosmic gamma ray detector ever built. Each MST focal plane consists in an array of some 1800 photomultipliers equipped with their own light concentrating optics in order to maximizing the amount of Cherenkov radiation collected by the telescope and to block stray light originating from ground environment. Within the CTA Consortium, the Institut de Planétologie et d’Astrophysique de Grenoble (IPAG) is in charge of designing, subcontracting the realization to industry, and testing the MST light concentrators. Two different optical solutions were pre-selected, respectively based on CPCs (Winston cones) and non-imaging concentrating lenses. Prototypes were manufactured by different industrial companies and tested in our laboratory on a test bench specifically built for the project. After shortly describing both optical designs, this communi...
1999, Solar Energy
2011, Nonimaging Optics: Efficient Design for Illumination and Solar Concentration VIII
1986, Journal of The Optical Society of America A-optics Image Science and Vision
2014, Optics Express
2003, Microwave and …
1985, Journal of the Optical Society of America A
2014, Optik - International Journal for Light and Electron Optics