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Implementing a grolishing process in Zeeko IRP machines.

Guoyu Yu1, David Walker, Hongyu Li

  • 1OpTIC Glyndŵr, Glyndŵr University, Ffordd William Morgan, St Asaph, UK. yug@glyndwr.ac.uk

Applied Optics
|October 4, 2012
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Summary

A new grolishing technique effectively removes mid-spatial-frequency errors from optical surfaces. This advanced grinding and polishing method significantly reduces processing time and costs in precision optics manufacturing.

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Area of Science:

  • Optical engineering
  • Precision manufacturing

Background:

  • Mid-spatial-frequency errors pose a significant challenge in subaperture polishing.
  • Existing methods often struggle with efficient error removal within specific spatial wavelength ranges.

Purpose of the Study:

  • To introduce and evaluate a novel grolishing technology for addressing mid-spatial-frequency errors.
  • To optimize the grolishing process for reduced processing time and improved surface quality.

Main Methods:

  • Development of a grolishing process integrating grinding and polishing functionalities.
  • Application of power spectral density analysis and filter theory for error characterization.
  • Implementation on Zeeko's IRP polishing machine with optimized process parameters.

Main Results:

  • Successful removal of grinding errors with spatial wavelengths ranging from 1 to 50 mm.
  • Significant reduction in overall process time compared to traditional methods.
  • Achieved an optimized edge upstand of 1 μm peak-to-valley over a 40 mm width.

Conclusions:

  • The novel grolishing technology offers an efficient solution for mid-spatial-frequency error removal in precision optics.
  • The process is self-contained and adaptable with different abrasives.
  • Optimized parameters ensure high-quality surface finish with reduced manufacturing time.