TW200637994A - Energy efficient, high intensity lighting fixture and method and system for efficient, effective, and energy saving high intensity lighting - Google Patents

Abstract

A high intensity discharge (HID) light fixture includes a reflector frame which supports an independent high reflectivity reflecting surface. The reflector frame supports a glass lens with anti-reflective coating on its surface and a visor or extension that also supports an independent high reflectivity reflecting surface. The high reflectivity reflecting surface has various section that adjust portions of the beam created by the fixture to better place light on a target area. The reflector frame is attachable to a lamp cone. An adjustable knuckle attaches between to a cross arm on a pole and the lamp cone. An HID lamp, when mounted in the lame cone, has its arc tube substantially surrounded by the high reflectivity reflecting surface of the reflector frame and visor. A lamp positioning mechanism automatically adjusts orientation of the arc lamp over a range of pivot angles for the lamp cone relative the knuckle. The HID lamp has an increased metal halide salt pool and does not include white oxide coatings at opposite ends. The lamp and the lamp positioning mechanism are configured to position the arc tube of the lamp horizontal over the normal range of aiming angles for the fixture. The modified HID lamp, its operating position, the high reflectivity reflecting surface, and other aspects of the fixture produce more light from the fixture than without these features for the same amount of energy to operate. Optionally, a ballast circuit can save energy over operating life of the lamp.