Patent ID: 6568216
Filing Date: 2003-05-27
Classification: C03B,H01J

Abstract:
A method for manufacturing a discharge tube, comprising:irradiating laser light on a portion of a translucent insulating tube; and sealing the portion of the translucent insulating tube onto which laser light has been irradiated; wherein irradiation of the laser light is performed while (i) scanning the laser light to oscillate back and forth along a tube axis of the translucent insulating tube, and (ii) changing at least one of an intensity of the laser light and an amplitude of the oscillation of the laser light; and wherein irradiation of the laser light is performed while changing the intensity of the laser light such that the intensity of the laser light when a size of a displacement of the laser light is maximal is smaller than the intensity of the laser light when the size of the displacement of the laser light is minimal.