FIELD EMISSION ULTRAVIOLET LAMP

摘要

In order to realize a long-lifetime, surface emission type field emission ultraviolet lamp for activating a photocatalyst, a plurality of linear cathode conductors (3) are arranged in parallel on a planar cathode-side glass substrate (1). A graphite carbon film (8) is formed on the anode-side surface of the cathode conductors (3) by CVD. An anode-side glass substrate (2) is arranged oppositely to the cathode-side glass substrate (1), a groove (7) and an anode conductor (5) are provided in association with each cathode conductor (3), and the anode conductor (5) is coated with phosphor (5) generating UV-rays. The cathode side glass substrate (1) and the anode side glass substrate (2) are stored in a vacuum container. Since the plurality of linear cathode conductors (3) formed with the carbon film (8) are arranged in parallel, the emission surfacecan be made planar while prolonging the lifetime of the lamp and a field emission ultraviolet lamp optimal for activating a photocatalyst can be realized.