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Optical Engineering

High thermal expansion optical component machined by ion beam figuring
Author(s): Xuhui Xie; Yu Hao; Lin Zhou; Yifan Dai; Shengyi Li
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Paper Abstract

Ion beam figuring (IBF) Technology to fabricate optical materials with a high thermal expansion coefficient, such as BK7, we were aware that the thermal effect is a troublesome problem that generates high thermal stress. If the thermal stress is over the component mechanical stress limit, the component may crack or break. We discuss this problem in detail and set up a thermal model. Using this model, we gain the machined component temperature field and its corresponding thermal stress field. A filtered IBF method is created to correct the thermal stress field which that gain a more even thermal stress distribution and decrease the thermal stress about 20%.

Paper Details

Date Published: 6 February 2012
PDF: 8 pages
Opt. Eng. 51(1) 013401 doi: 10.1117/1.OE.51.1.013401
Published in: Optical Engineering Volume 51, Issue 1
Show Author Affiliations
Xuhui Xie, National Univ. of Defense Technology (China)
Yu Hao, National Univ. of Defense Technology (China)
Lin Zhou, National Univ. of Defense Technology (China)
Yifan Dai, National Univ. of Defense Technology (China)
Shengyi Li, National Univ. of Defense Technology (China)

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