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实心锥体棱镜是由三个相互垂直的反射平面(简称小面)和一个入射平面(简称大面)所构成的四面体。由于它在光路电不受自身偏摆的影响,因而广泛地代替平面反射镜应用于激光干涉仪和测距仪等光学仪器之中。对于这种光学元件的加工,其主要的技术要求是三个反射面相互垂直,其直角精度优于0.5″。我厂自1965年以来开始加工这种锥体棱镜,并于1978年进行批量生产,在多年加工实践的基础上,形成了一套行之有效的加工工艺。本文对这个工艺过程作一介绍。
Solid cone prism is composed of three mutually perpendicular reflection plane (referred to as small plane) and an incident plane (referred to as the large plane) composed of tetrahedron. Because it is not in the optical circuit from its own deflection, and therefore widely used instead of plane mirrors, laser interferometer and range finder and other optical instruments. For the processing of such optical components, the main technical requirements of the three reflective surfaces perpendicular to each other, its right-angle accuracy of better than 0.5 ". I plant since 1965 to begin processing of this cone prism, and in 1978 for mass production , Based on years of processing practice, formed a set of effective processing technology.This paper gives an introduction to this process.