Patent ID: 7252412

Claim:
A luminaire suitable for under canopy lighting, comprising: a concave reflector ( 10 ) with a plane of symmetry ( 11 ) and defining a cavity ( 12 ); a light emission window ( 15 ) tangent to the reflector ( 10 ), transverse to the plane of symmetry ( 11 ), and having first edges ( 16 ) along the plane of symmetry ( 11 ); holding means ( 20 ) for accommodating an electric lamp L in the cavity ( 12 ) of the reflector ( 10 ), with an elongate light source Ls of said lamp L transverse to the plane of symmetry ( 11 ); a set of strips ( 25 ) adjacent the first edges ( 16 ), extending substantially from the light emission window ( 15 ) into the cavity ( 12 ), said strips being light-diffusing, wherein the strips create a cut-off angle β with respect to the light emission window ( 15 ) within which no light is emitted directly from the lamp; a light-transmitting hood ( 30 ) covering the light emission window ( 15 ), said hood ( 30 ) having first walls ( 31 ) extending substantially away from the first edges ( 16 ); and a light-refracting element ( 35 ) disposed within a region of the cut-off angle β and along at least one of the first walls ( 31 ) of the light-transmitting hood ( 30 ), the element ( 35 ) having a base ( 36 ) facing the light emission window ( 15 ) and a top ( 37 ) remote from the light emission window ( 15 ), wherein the light-refracting element is configured to cause light emitted from said lamp L that is diffusely reflected from one of the strips at an opposite side of the plane of symmetry to emanate within an angle of up to 5° to the light emission window ( 15 ).