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Study on aspherical surface polishing of single crystal silicon lens

机译:单晶硅透镜非球面抛光的研究

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摘要

Aspherical lenses of single crystal silicon (Si) are used for the scope and the camera of infrared wavelength, because the very large refractive index of the material leads to substantial reflection loss. These aspherical lenses of infrared wavelength materials were manufactured by diamond cutting. But the single crystal silicon is a hard and brittle material, it is difficult to obtain a mirror Surface without a micro crack when the lens diameter is large. In this case, aspherical polishing has to be applied after diamond cutting in order to generate an aspherical surface most precisely.
机译:单晶硅(Si)的非球面透镜用于红外波长的示波器和摄像机,因为该材料的非常大的折射率会导致相当大的反射损耗。这些红外波长材料的非球面透镜是通过金刚石切割制造的。但是单晶硅是硬而脆的材料,当透镜直径大时,难以获得没有微裂纹的镜面。在这种情况下,必须在金刚石切割后进行非球面抛光,以最精确地生成非球面。

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