大数值孔径、高次非球面透镜的加工与检验

Fabricating and testing of a large NA, even high order aspheric le ns

通过一空间相机光学系统中某透镜的高次非球面表面加工过程,提出了一种基于小磨头数控光学表面成型技术(CCOS,Computercontrolopticalsurfacing)和非球面轮廓检验、零位补偿检验技术的中等口径高次非球面光学表面的加工、检测方法,并且给出了补偿器实际光学设计结果。文中采用这种方法加工的高次非球面表面,最终精度优于1λP V(λ=632.8nm),满足了设计要求。对这种技术的适用范围进行了简明的讨论。

By describing the process of fabricating and testing an even-high orde r aspheric optical surface of a lens that is intended to be used in a space came ra optical system, a method based on CCOS (Computer Control Optical Surfacing) t echnology and aspheric profiler test, null test technology is introduced for fab ricating and testing of middle size even high order aspheric optical surface. Th e structure parameters of the null lens are given. The final accuracy of the asp heric surface is better than 1λ P-V(λ=632.8nm), which has fulfilled the dem and of the designer. The applicability of the method is briefly discussed.