Leuchtstofflampe und ihr Herstellungsverfahren

摘要

A fluorescent lamp comprising, a bulb (1) having an outer surface and an inner surface, discharge gas contained in the bulb (1) and generating ultraviolet rays by a discharge thereof, a pair of electrodes (4) provided to the bulb (1) for generating the discharge, a phosphor film (7) formed on the inner surface of the bulb (1) and having a non-uniform thickness thereof, and an ultraviolet suppressing film (8) for suppressing the ultraviolet rays formed to be faced with the phosphor film (7), characterized in that the ultraviolet suppressing film (8) has non-uniform ability for suppressing ultraviolet rays penetrating the phosphor film (7) in accordance with portions thereof to decrease the difference in the intensity of the ultraviolet rays emitted from the ultraviolet suppressing film (8).