一、概述: 在光学系统中,采用非球面不仅可以简化光学仪器的结构,而具有利于像差的矫正,提高光学系统的成象质量。由于非球面光学零件加工困难,工艺尚未成熟,至今没有得到广泛的应用。非球面加工其所以复杂是由于它的一系列特性所决定的,例如,非球面大多数可有一个对称轴,其表面比较复杂,一般只能单件加工。非球面曲面各点曲率不同,在抛光时难以修 First, an overview: In the optical system, the use of aspherical not only can simplify the structure of optical instruments, and has the help of aberration correction, improve the imaging quality of the optical system. Due to the difficulty of processing aspherical optical components, the technology is not yet mature, so far it has not been widely used. Aspheric processing is so complicated because of a series of its properties. For example, most of the aspheric surfaces can have an axis of symmetry. Their surfaces are rather complex and generally can only be machined in one piece. Aspherical surface curvature of different points in the polishing difficult to repair