Abstract
During the null testing of aspheric mirrors, the error induced by misalignment of the null compensator or the mirror will couple with the surface figure and consequently give incorrect information for deterministic figuring. A mathematical alignment model of null testing is established, and the computer-aided alignment software is developed to determine the misalignment in this paper. Based on the analysis of aberration compensation with different alignment parameters, numerical simulations show that high accuracy alignment of null testing can be achieved by adjusting only five degrees of freedom of the null compensator, on condition that a planar interferometer is used and the amount of misalignment is small.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
