Energy efficient lighting apparatus and use thereof

F - Mech Eng,Light,Heat,Weapons – 21 – V

Patent

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F21V 7/04 (2006.01) F21V 7/00 (2006.01)

Patent

CA 2383182

An apparatus and method are provided for providing substantially uniform illumination. The apparatus includes an elongate reflector housing with an inner surface having a substantially constant profile in cross section which is generally concave, an optical center being defined at a geometric focus of the profile of the inner surface. In a preferred embodiment, substantially uniform illumination is achieved by providing an elongate light source positioned within the elongate reflector housing such that a geometric center of the light source is situated preferably spaced outwardly from the optical center of the housing, away from the inner surface of the housing.

La présente description concerne un appareil et une méthode offrant un éclairage sensiblement uniforme. L'appareil comprend un logement de réflecteur allongé dont la surface interne comporte un profil sensiblement constant dans une section transversale généralement concave, un centre optique défini à un foyer géométrique du profil de la surface interne. Dans une configuration préférentielle, l'éclairage essentiellement uniforme est obtenu en fournissant une source lumineuse allongée positionnée à l'intérieur d'un logement de réflecteur allongé de sorte qu'un centre géométrique de la source lumineuse soit placé, de préférence, vers l'extérieur par rapport au centre optique du logement, à l'écart de la surface interne du logement.

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