The Simulation Study of the Influence of Surface Error on Optical Properties for Optical Part

摘要

In order to study the influence of surface error on optical properties for optical part after machining, this paper takes a piece of ring curved lens with aperture D=2mm as an example. When analyzing the influence of surface error on optical properties, it employs the evaluation indexes i.e. wavefront aberration, point spread function and modulation transfer function. The study results show that with the increment of surface error, the value of wavefront aberration increases. Plus, the light of outer loop on the image plane is more obvious and its energy increases, however, the energy in the center range decreases. Moreover, the capacity of information storage decreases and also the image quality decreases.