Patent ID: 7034466
Filing Date: 2006-04-25
Classification: H05B

Abstract:
1. A High-Intensity Discharge lamp, comprising: a lamp housing having a receiving chamber; a light reflector supported within said receiving chamber and defining a light cavity within said light reflector; a high intensity discharge light disposed within said light cavity of said light reflector for producing a main light having a predetermined light intensity; and a standby lighting control system, comprising: a light sensor disposed within said receiving chamber for detecting said light intensity of said high intensity discharge light within said light cavity; and a standby lamp which is supported within said lamp housing and is activated by said light sensor between a standby mode and a backup mode, wherein at said standby mode, when said light intensity of said high intensity discharge light within said light cavity is reached above a predetermined threshold, said standby lamp is deactivated, and at said backup mode, when said light intensity of said high intensity discharge light within said light cavity is dropped below said predetermined threshold, said standby lamp is activated for generating a backup light to compensate a loss of said light intensity of said high intensity discharge light, wherein said light reflector has a light gap formed thereon for allowing said main light passing out from said light cavity to outside through said light gap, wherein said light sensor is positioned adjacent to said light gap within said receiving chamber at a position out of said light cavity to optically communicate with said light cavity through said light gap.