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本文从彩色摄影的需要出发,根据美国的ANSI彩色标准,讨论了摄影镜头的彩色还原问题。文中指出镜头玻璃的光谱吸收对其彩色平衡的影响,着重分析了减反射膜对改善镜头彩色还原性能的作用,计算了各类减反射膜的彩色贡献,给出了用于10倍变焦距彩色摄影镜头减反射膜系的设计思想、计算方法和结果.结果表明:合理地选择减反射膜系可使镜头的透过率和彩色还原特性同时获得改善.
Based on the needs of color photography, this paper discusses the color reproduction problem of the photographic lens according to the American ANSI color standard. In this paper, the influence of the spectral absorption of the lens on the color balance is pointed out. The effect of the antireflection film on the color reproduction of the lens is analyzed emphatically. The color contribution of various antireflection films is calculated. The design idea, calculation method and result of the antireflection film system of the photographic lens are shown in this paper. The results show that the reasonable choice of the antireflection film system can improve the transmittance and the color reproduction characteristics of the lens at the same time.