High-pressure mercury lamp luminescent device and means of ignition

摘要

To provide a high-pressure mercury lamp (1) capable of shortening the light output rise time and of preventing glow discharge that occurs when the lamp (1) is lighted, a high-pressure mercury lamp luminescent device with a pair of electrodes (6,7) placed opposite one another within a discharge vessel (2) made of quartz glass with seals (4,5) formed on both ends and at least 0.15 mg/mm<3> of mercury sealed into the discharge vessel (2), has a device for increasing the temperature of the outer wall of the luminescent portion of the discharge vessel (2) to at least 100 DEG C before the high-pressure mercury lamp (1) is lit. <IMAGE>