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IJAT Vol.16 No.1 pp. 32-37
doi: 10.20965/ijat.2022.p0032
(2022)

Paper:

Optimization of Nano-Topography Distribution by Compensation Grinding

Nobuhito Yoshihara and Masahiro Mizuno

Iwate University
4-3-5 Ueda, Morioka, Iwate 020-8551, Japan

Corresponding author

Received:
June 14, 2021
Accepted:
August 6, 2021
Published:
January 5, 2022
Keywords:
nano-topography, ultra-precision grinding, compensation grinding, vibration
Abstract

Optical surfaces are required to have high form accuracy and smoothness. The form accuracy must be below 50 nm. Form accuracy is currently on the order of several tens of nanometers or less; however, further improvement is required. To improve form accuracy, compensation grinding is performed based on form measurement results. However, when the form error is small, a small periodical waviness occurs on the ground surface, which is known as nano-topography. This waviness cannot be compensated for using conventional compensation methods because the nano-topography distributions are not reproducible. A previous study showed that grinding conditions affect the spatial frequency of nano-topography. Therefore, in this study, optimum grinding conditions are estimated from the view point of nano-topography distributions, and the grinding conditions are compensated to optimize these distributions.

Cite this article as:
Nobuhito Yoshihara and Masahiro Mizuno, “Optimization of Nano-Topography Distribution by Compensation Grinding,” Int. J. Automation Technol., Vol.16, No.1, pp. 32-37, 2022.
Data files:
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Last updated on Jan. 20, 2022