Simulation and error analysis of non-null interferometry for measuring high-order aspheric surface parameter errors

Yiming Liu, Xin Tao, Yao Hu*, Qun Hao

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Aspheric surfaces are widely used in advanced optical instrument. Measuring aspheric surface parameter errors (SPEs) in high accuracy is of vital importance in manufacturing and aligning optical aspheric surfaces. A simulation to prove the effectiveness and accuracy of an interferometric measurement method for high-order aspheric SPEs is carried out based on the ideal situation that there is no error of the BCD. The relative accuracy of vertex radius of curvature error, conic constant error and fourth order aspheric coefficient error can reach 5.58×10-8 %, 1.36×10-4 % and 0.02%. The influence of the BCD error is analyzed to prove the feasibility of this method and provide a theoretical guidance for real measurement configurations. This method can measure all kinds of aspheric surface parameter errors mentioned above simultaneously in high accuracy.

Original languageEnglish
Title of host publicationOptical Metrology and Inspection for Industrial Applications VIII
EditorsSen Han, Gerd Ehret, Benyong Chen
PublisherSPIE
ISBN (Electronic)9781510646476
DOIs
Publication statusPublished - 2021
EventOptical Metrology and Inspection for Industrial Applications VIII 2021 - Nantong, China
Duration: 10 Oct 202112 Oct 2021

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11899
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferenceOptical Metrology and Inspection for Industrial Applications VIII 2021
Country/TerritoryChina
CityNantong
Period10/10/2112/10/21

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