Polishing Large-Aperture Mirror Using Ultraprecise Bonnet and PSD Result Analysis

Wei Wang, Min Xu, Hongyu Li, Guoyu Yu

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As the development of modern optical technology, especially space optical science, more high precision mirrors with large apertures are needed. But it is difficult to manufacture high precision large aperture optical components. The method of optical polishing using an ultra-precise bonnet is based upon the technology of computer controlled optical surfacing. A bonnet filled with air is applied as a precise polishing tool which is flexible and able to adapt itself well to the shape of the part, which is superior to other polishing methods. A material removing model of bonnet precessed polishing is established according to kinematic principle based on the Preston equation. The model is modified in terms of Hertz contact theory using the physical characteristics of polishing bonnet tools. A satisfactory result was obtained for one of the surfaces of a wedge mirror with a diameter of 570mm. The resulted PV and RMS parameters are 1/8 λ and 1/75 λ respectively.

Original languageEnglish
Title of host publication6th International Symposium on Advanced Optical Manufacturing and Testing Technologies
Subtitle of host publicationAdvanced Optical Manufacturing Technologies
EditorsLi Yang, Eric Ruch, Shengyi Li
PublisherSPIE
Number of pages8
Volume8416
ISBN (Print)9780819490988
DOIs
Publication statusPublished - 16 Oct 2012
Externally publishedYes
Event6th International Symposium on Advanced Optical Manufacturing and Testing Technologies - Xiamen, China
Duration: 26 Apr 201229 Apr 2012
Conference number: 6
https://spie.org/OMT/conferencedetails/advanced-optical-manufacturing-technologies (Link to Conference Details )

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
PublisherSPIE
Volume8416
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

Conference6th International Symposium on Advanced Optical Manufacturing and Testing Technologies
CountryChina
CityXiamen
Period26/04/1229/04/12
Internet address

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Cite this

Wang, W., Xu, M., Li, H., & Yu, G. (2012). Polishing Large-Aperture Mirror Using Ultraprecise Bonnet and PSD Result Analysis. In L. Yang, E. Ruch, & S. Li (Eds.), 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies (Vol. 8416). [84160P] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 8416). SPIE. https://doi.org/10.1117/12.977788