一般镜片每个面有百分之几的反射损失,镀了可见光增透膜可以把反射损失减小到每面<1%。
有些特殊镜头镀dual bandpass膜,比如可见和红外,有的镀high pass, high cutoff, etc, etc。
一般镜片每个面有百分之几的反射损失,镀了可见光增透膜可以把反射损失减小到每面<1%。
有些特殊镜头镀dual bandpass膜,比如可见和红外,有的镀high pass, high cutoff, etc, etc。
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