Abstract

We describe a procedure to estimate the calibration function for an experimental setup that contains a transmitting diffuser whose bidirectional transmittance distribution function for light transmitted in normal direction is nearly independent of the incidence angle. This type of diffusing screen may be used in experimental setups to measure the irradiance distribution in the focal plane of concentrator optics that have large angles of incidence in the focal plane. It is shown that the influence of this screen and of the remaining components on the irradiance distribution may be described empirically by a Gaussian function and thus may be corrected for. Furthermore, it is demonstrated that the correction is necessary to avoid an underestimation of the concentrator optics’ ability to concentrate the incoming radiation.

© 2015 Optical Society of America

Experimental measurements of a prototype high concentration Fresnel lens CPV module for the harvesting of diffuse solar radiation

Noboru Yamada and Kazuya Okamoto
Opt. Express 22(S1) A28-A34 (2014)

Nonimaging polygonal mirrors achieving uniform irradiance distributions on concentrating photovoltaic cells

Max Schmitz, Fabian Dähler, François Elvinger, Andrea Pedretti, and Aldo Steinfeld
Appl. Opt. 56(11) 3035-3052 (2017)

Determining the irradiance signal from an asymmetric source with directional detectors: application to calibrations of radiometers with diffusers

Pasi Manninen, Petri Kärhä, and Erkki Ikonen
Appl. Opt. 47(26) 4714-4722 (2008)

Optical analysis of deviations in a concentrating photovoltaics central receiver system with a flux homogenizer

Henning Helmers, Wei Yi Thor, Thomas Schmidt, De Wet van Rooyen, and Andreas W. Bett
Appl. Opt. 52(13) 2974-2984 (2013)

Evaluating an image-based bidirectional reflectance distribution function measurement setup

Aditya Sole, Ivar Farup, Peter Nussbaum, and Shoji Tominaga
Appl. Opt. 57(8) 1918-1928 (2018)