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一、前言在光学系统中采用非球面的光学另件,它的性能将得到显著改善,这是许多人都知道的事。在无限多种非球面中,二次非球面(抛物面、椭球面、双曲面等)占特别重要的位置。很早以前牛顿等人在反射望远镜中的主镜和副镜就采用了二次非球面,这些都是很有名的范例。直到今天,在天文仪器中,大口径准直管;光谱仪及优质聚光镜等都使用了二次非球面。由于二次非球面的特殊性,它提供了完善的检验方法,采用古典加工工艺,就能得
I. INTRODUCTION The use of aspheric optical components in optical systems has led to a significant improvement in its performance, something many people know. Of the infinite variety of aspheres, secondary aspheres (paraboloid, ellipsoid, hyperboloid, etc.) occupy a particularly important position. Long ago, Newton et al. Used secondary aspheric surfaces in the primary and secondary mirrors of the reflecting telescope, all of which are well-known examples. Until today, in astronomical instruments, large diameter collimators; spectrometers and high quality condensers all use secondary aspheric surfaces. Due to the special nature of the secondary aspheric surface, which provides a perfect test method, the use of classical processing technology, we can get