ガラス製レーザー保護眼鏡の強度

Abstract

We studied on the tolerance of laser protective spectacles using absorptive glass filters for Nd-YAG laser(1,300nm) irradation. Two types of safety filters were tested, namely, glass filter and glass filter lined with plastic film. Twenty-two Watt, 13 seconds irradiation of the laser could not penetorate the glass filters and black paper set behind the spectacles showed no changes. Both types of the laser safety filters were cracked in process of cooling but not bracken into pieces. The fact indicates that the laser protective spectacles using both types of glass filters have satisfactory strength and safety for laser irradation.