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介绍了光学产品用负滤光片的特点。负滤光片适用于镀制要求某一光谱范围高反射率、其他波段范围高透射的光学零件。讨论了窄带负滤光片膜层的结构特点、反射带宽度、反射率值与膜料及膜系的相对关系,给出了典型的理论光谱特性曲线.镀制出了接近理论光学特性的窄带负滤片膜层,膜层的中心波长定位精度2 nm,中心波长漂移不大于2 nm,非胶合状态下可直接在大气环境中使用.
Introduced the characteristics of negative optical filters. Negative filter for plating system requires a high spectral reflectance of the spectrum, the other high-transmittance optical range of the band. The structural characteristics, the width of the reflection band and the relative relationship between the reflectance and the film material and the film system were discussed, and the typical theoretical spectral characteristics were given. The negative band of negative band near the theoretical optical properties Filter film, the center of the film wavelength positioning accuracy of 2 nm, the center wavelength drift of not more than 2 nm, non-glued state can be directly used in the atmosphere.