Device for projecting a defined light beam onto a...

G - Physics – 01 – J

Patent

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Details

G01J 1/04 (2006.01) G01J 1/08 (2006.01) G01R 31/26 (2006.01) G02B 26/08 (2006.01)

Patent

CA 2288711

This invention relates to a device for directing a defined light beam onto a photosensitive area, particularly for testing the performance of a photovoltaic module. According to the invention this device comprises, in a support structure (1) which can be turned about a vertical central axis (4) in accordance with the actual azimuthal sun position, a cabin (7) receiving the module to be tested with the photosensitive area (6) in a horizontal position, the cabin being located in the lower portion of the structure; a first mirror (2) which can be tilted about a horizontal axis (3) in order to adapt its position continuously to the sun elevation position and to optimize the sun light impact thereon; and a second mirror (5) fixed to the structure (1) vertically above the photosensitive area (6) of the module and receiving the light beam from the first mirror (2) for reflection towards said area (6), at least one of said mirrors (2, 5) being associated to a mechanism (8) which allows one to vary the convexity of the mirror in accordance with sun intensity detectors.

L'invention concerne un dispositif destiné à diriger un faisceau lumineux déterminé sur une zone photosensible, notamment pour tester les performances d'une module photovoltaïque. Selon l'invention, ce dispositif comprend, dans une structure de support (1) qui peut être tournée autour d'un axe central vertical (4) en fonction de la position réelle azimutale du soleil: un logement (7) destiné à recevoir le module à tester, la zone photosensible (6) étant placée horizontalement et le logement étant situé dans la portion inférieure de la structure; un premier miroir (2) qui peut être basculé autour d'un axe horizontal (3) de façon que sa position soit adaptée en continu sur la position d'élévation du soleil et que soit optimisé l'impact de la lumière solaire sur ledit miroir; et un second miroir (5) fixé sur la structure (1), verticalement au-dessus de la zone photosensible (6) du module, et destiné à recevoir le faisceau lumineux à partir du premier miroir (2) aux fins de réflexion du faisceau vers ladite zone (6), l'un au moins de ces miroirs (2, 5) étant associé à un mécanisme (8) permettant de faire varier la convexité du miroir en fonction de détecteurs d'intensité solaire.

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