Luminaire reflector having improved prism transition

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

Patent

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F21V 7/00 (2006.01) G02B 5/04 (2006.01) G02B 5/08 (2006.01) G02B 7/182 (2006.01)

Patent

CA 2589053

A reflector (14) for a luminaire comprises a generally parabolic wall (28) having series of main right-angled prisms (16) and an interleaved series of transition prisms (18). The main and transition prisms have essentially the same shapes and follow the same overall curvature to control the illumination. The transition prisms transition into the main prisms by merging a peak of a transition prism into the valley between adjacent main prisms in a short transition zone (20). Thus, the transition zone has only a small effect on the overall lighting pattern.

L'invention concerne un réflecteur destiné à un luminaire. Ledit réflecteur comprend une paroi généralement parabolique présentant une série de prismes à angles droits principaux et une série intercalée de prismes de transition. Les prismes principaux et de transition présentent sensiblement les mêmes formes et suivent la même courbure globale afin de contrôler l'éclairage. Les prismes de transition assurent la transition dans les prismes principaux par fusion d'une crête d'un prisme de transition dans la vallée entre des prismes principaux adjacents dans une courte zone de transition, Ainsi, la zone de transition présente seulement un faible effet sur le diagramme d'éclairage d'ensemble.

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