High thermal expansion optical component machined by ion beam figuring

Xie, Xuhui; Hao, Yu; Zhou, Lin; Dai, Yifan; Li, Shengyi

doi:doi:10.1117/1.OE.51.1.013401

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Optical Engineering / Volume 51 / Issue 1 / Optical Fabrication

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High thermal expansion optical component machined by ion beam figuring

Opt. Eng. 51, 013401 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.013401

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Abstract

References (7)

Citing Articles (22)

Xuhui Xie, Yu Hao, Lin Zhou, Yifan Dai, and Shengyi Li

National University of Defense Technology, School of Mechatronic Engineering and Automation, DeYa, Changsha Hunan, China

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%.

History

Received Jul 21, 2011
Accepted Nov 17, 2011
Revised Oct 12, 2011
Published online Feb 06, 2012

Digital Object Identifier

http://dx.doi.org/10.1117/1.OE.51.1.013401

Citation

Xuhui Xie, Yu Hao, Lin Zhou, Yifan Dai and Shengyi Li, "High thermal expansion optical component machined by ion beam figuring", Opt. Eng. 51, 013401 (Feb 06, 2012); http://dx.doi.org/10.1117/1.OE.51.1.013401