Wavelength (1240/Eg+120) features that the process which irradiates the light

摘要

PPROBLEM TO BE SOLVED: To provide a method by which the discoloration of a translucent ceramic caused by the irradiation with an ultraviolet ray is easily improved. PSOLUTION: The method includes a process for irradiating a translucent ceramic having a bandgap of Eg(eV) with a light having a wavelength of 1240/Eg +(120 to 700) nm. PCOPYRIGHT: (C)2009,JPO&INPIT