Optical Design and Engineering

Evolutionary diamond turning of optics for error correction covering a wide spatial spectrum

[+] Author Affiliations
Suet To

The Hong Kong Polytechnic University, State Key Laboratory in Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, 11 Yuk Choi Road, Hung Hom Kowloon 999077, Hong Kong, China

Zhiwei Zhu

The Hong Kong Polytechnic University, State Key Laboratory in Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, 11 Yuk Choi Road, Hung Hom Kowloon 999077, Hong Kong, China

Peng Wang

Tianjin Jinhang Institute of Technical Physics, 58 Central West Road, Tianjin 300380, China

Opt. Eng. 54(1), 015103 (Jan 16, 2015). doi:10.1117/1.OE.54.1.015103
History: Received August 16, 2014; Accepted December 4, 2014
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Abstract.  To improve the quality of diamond turned optics, it is necessary to employ a laborious postprocessing approach. However, the approach is often very hard to implement on freeform surfaces, and it greatly decreases the processing efficiency even for simple optics. An evolutionary diamond turning method is first proposed to comprehensively improve the quality of the turned optics. The evolutionary goal is to attenuate the peak value of the power spectral density of residual tool marks, and the special mutation point is observed during the evolution. Taking advantage of the modulation operation of a diamond tool in the spatial frequency domain, form accuracy, surface roughness, and surface reflectivity are all significantly improved, demonstrating the superiority of the EDT method for optics fabrication.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Suet To ; Zhiwei Zhu and Peng Wang
"Evolutionary diamond turning of optics for error correction covering a wide spatial spectrum", Opt. Eng. 54(1), 015103 (Jan 16, 2015). ; http://dx.doi.org/10.1117/1.OE.54.1.015103


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