Variable-spectrum solar simulator
First Claim
1. A variable-spectrum solar simulator, comprising:
- A primary source including an aperture diaphragm providing a beam of broad spectrum radiation;
A dispersing element which deflects the beam differently for each wavelength of light;
An optical system that projects spectrally separated images of the primary source onto a device that allows selective passage of the light point by point, said device spatially filtering the beam of the light into a custom spectral filtering; and
A re-mixing optical system placed behind the device, said re-mixing optical system reversing the light and forming a secondary source with a collimated beam having predefined spectrum and angular properties.
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Accused Products
Abstract
The invention relates to a variable-spectrum solar simulator for characterising photovoltaic systems. The simulator can be used to obtain a spectrum adjusted to the solar spectrum, both for a standard spectrum or a real spectrum adjusted to local irradiation conditions. The simulator also allows the spatial-angular characteristics of the sun to be reproduced. The invention comprises: a broad-spectrum light source, the flux from which is emitted through an aperture; an optical system which collimates the primary source; a system which disperses the beam chromatically; an optical system which forms an image of the dispersed primary source at a given position, at which a spatial mask is placed in order to filter the received irradiance spectrally; an optical system which captures the filtered spectrum and returns, mixes and concentrates same in a secondary source with the desired spectral, angular, and spatial characteristics; an optical system which collimates the secondary source such that it reproduces the angular characteristics of the sun; and a control system.
9 Citations
13 Claims
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1. A variable-spectrum solar simulator, comprising:
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A primary source including an aperture diaphragm providing a beam of broad spectrum radiation; A dispersing element which deflects the beam differently for each wavelength of light; An optical system that projects spectrally separated images of the primary source onto a device that allows selective passage of the light point by point, said device spatially filtering the beam of the light into a custom spectral filtering; and A re-mixing optical system placed behind the device, said re-mixing optical system reversing the light and forming a secondary source with a collimated beam having predefined spectrum and angular properties. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A variable-spectrum solar simulator, comprising:
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A primary source including an aperture diaphragm providing collimated beam of broad spectrum radiation; A dispersing element which deflects the beam differently for each wavelength of light; A projecting optical system that projects spectrally separated images of the primary source onto a device that allows selective passage of the light point by point, said device spatially filtering the beam of the light into a custom spectral filtering to form filtered light; and A collecting and remixing optical system placed behind the device and including an integrating sphere, said collecting and remixing optical system collecting the filtered light and introducing the filtered light to the integrating sphere, said integrating sphere having an output forming a secondary source of output light which has a predetermined angular distribution, a predetermined spatial distribution and a predetermined spectrum. - View Dependent Claims (11, 12, 13)
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Specification