PROBLEM TO BE SOLVED: To provide a discharge lamp of which lighting can be stabilized in a short period of time, versatility with ultraviolet light source is improved by eliminating variation of emission characteristics of ultraviolet ray and, which is favorable from the viewpoint of energy-saving and global environment protection with reduced electric power consumption.SOLUTION: The discharge lamp is made of a discharge tube with carbon monoxide and/or gas containing carbon monoxide enclosed. The discharge lamp utilizes discharge emission emitted when carbon monoxide and/or gas containing carbon monoxide are discharged, especially, one of ultraviolet region.COPYRIGHT: (C)2003,JPO【課題】 放電灯の点灯を短時間で安定させるとともに紫外線放射特性の変化をなくして紫外線光源との汎用性を高め、しかも電気消費量を低減して省エネルギーと地球環境保護の観点から好ましい放電灯を提供することを目的とする。【解決手段】 放電管内に一酸化炭素及び/又は一酸化炭素を含む気体を封入して、該一酸化炭素及び/又は一酸化炭素を含む気体を放電させた際に放射される放電発光、特に紫外領域の放電発光を利用した放電灯を提供する。
