应用范围： ●照相机自动测光(Camera automation photometry) ●光电控制(Photoelectric control) ●室内光线控制(Indoor sunlight control) ●报警器(Annunciator) ●工业控制(Industrial control) ●光控开关(Optical control switch) ●光控灯(Optical control lamp) ●电子玩具(Electronic toy) ●光控音乐I.C(Optical control musicI.C) ●电子验钞机(Electronic proverbial 　vlitional)