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现在,薄膜状光学材料性能一般都比块状材料要差,光学薄膜的主要问题就在这里。本文将概述使薄膜不同于通常块状材料的一些基本特性。我们仅限于讨论真空蒸发的薄膜和包括对这种基本工艺过程的改进的一些评论。
Now, film-like optical materials generally have poorer performance than bulk materials, and the main problem with optical films is here. This article will outline some of the basic characteristics that make a film different from the usual bulk materials. We are limited to discussing vacuum-evaporated films and include some comments about improvements to this basic process.