Glare control sports lighting luminaire

摘要

A luminaire especially suited for sports and roadway applications. The reflector of the luminaire has a modified parabolic shape wherein a true parabolic curve has been tipped inwardly to produce a tipped parabolic reflector having a circle of focal points centered on the focal point of the original true parabolic curve. The lamp comprises a double-ended arc lamp which is positioned transversely of the central axis of the reflector with the arc of the lamp generally tangent to top dead center of the focal point circle. The luminaire further includes a vertical black partition positioned within the reflector below and forwardly of the lamp and a specular insert in the upper front region of the reflector. The front edge of the specular insert is generally contiguous with the rear edge of a flat upper portion of a visor positioned against the front face of the reflector with the specular insert angled upwardly with respect to the central axis of the reflector and the flat visor portion angled downwardly with respect to the central axis. In an alternate embodiment a stepped lens is provided between the lamp and the front face of the reflector so as to block a direct frontal view of the arc. In a further alternate embodiment a true parabolic reflector bowl in positioned in the back half of the tipped parabolic reflector to provide a narrow concentrated beam. In a further alternate embodiment, the clear lens that covers the front reflector face is replaced by a lateral spread lens to increase the beam width and reduce direct lamp glare.