一、引言要求某一波长范围的光束高透射,而偏离这一波段的光束骤然变化为高反射(或称抑制)的干涉截止滤光片有着广泛的应用。通常我们把抑制短波区、透射长波区的滤光片称为长波通滤光片,相反,抑制长波区、透射短波区的截止滤光片就称为短波通滤光片,干涉截止滤光片的基本类型是上一 I. INTRODUCTION It is required that a light beam of a certain wavelength range be highly transmissive, while a light beam deviating from this wavelength range is suddenly changed into a high-reflection (or suppression) interference-cut filter having a wide range of applications. Usually we inhibit the shortwave zone, long-wavelength transmission of the filter known as the long-pass filter, on the contrary, inhibit the long-wave zone, the short-wave transmission cut-off filter is called the short-pass filter, the interference cut-off filter The basic type is the previous one