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Edge control in a computer controlled optical surfacing process using a heterocercal tool influence function

Hu, Haixiang and Zhang, Xin and Ford, Virginia and Luo, Xiao and Qi, Erhui and Zeng, Xuefeng and Zhang, Xuejun (2016) Edge control in a computer controlled optical surfacing process using a heterocercal tool influence function. Optics Express, 24 (23). pp. 26809-26824. ISSN 1094-4087. http://resolver.caltech.edu/CaltechAUTHORS:20161216-093330150

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Abstract

Edge effect is regarded as one of the most difficult technical issues in a computer controlled optical surfacing (CCOS) process. Traditional opticians have to even up the consequences of the two following cases. Operating CCOS in a large overhang condition affects the accuracy of material removal, while in a small overhang condition, it achieves a more accurate performance, but leaves a narrow rolled-up edge, which takes time and effort to remove. In order to control the edge residuals in the latter case, we present a new concept of the ‘heterocercal’ tool influence function (TIF). Generated from compound motion equipment, this type of TIF can ‘transfer’ the material removal from the inner place to the edge, meanwhile maintaining the high accuracy and efficiency of CCOS. We call it the ‘heterocercal’ TIF, because of the inspiration from the heterocercal tails of sharks, whose upper lobe provides most of the explosive power. The heterocercal TIF was theoretically analyzed, and physically realized in CCOS facilities. Experimental and simulation results showed good agreement. It enables significant control of the edge effect and convergence of entire surface errors in large tool-to-mirror size-ratio conditions. This improvement will largely help manufacturing efficiency in some extremely large optical system projects, like the tertiary mirror of the Thirty Meter Telescope.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1364/OE.24.026809DOIArticle
https://www.osapublishing.org/oe/abstract.cfm?uri=oe-24-23-26809PublisherArticle
Additional Information:© 2016 Optical Society of America. Received 8 Sep 2016; revised 16 Oct 2016; accepted 21 Oct 2016; published 11 Nov 2016. Funding: National Basic Research Program of China (2011CB013205); National Natural Science Foundation of China (NSFC) (61210015, 61605202).
Funders:
Funding AgencyGrant Number
National Basic Research Program of China2011CB013205
National Natural Science Foundation of China61210015
National Natural Science Foundation of China61605202
Classification Code:OCIS codes: (220.0220) Optical design and fabrication; (220.4610) Optical fabrication; (220.5450) Polishing
Record Number:CaltechAUTHORS:20161216-093330150
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20161216-093330150
Official Citation:Haixiang Hu, Xin Zhang, Virginia Ford, Xiao Luo, Erhui Qi, Xuefeng Zeng, and Xuejun Zhang, "Edge control in a computer controlled optical surfacing process using a heterocercal tool influence function," Opt. Express 24, 26809-26824 (2016)
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:72891
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:16 Dec 2016 17:46
Last Modified:16 Dec 2016 17:46

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