Translator Disclaimer
28 November 2019 Concept of a polishing tool based on viscoelastic properties for midspatial frequencies suppression on aspheric surfaces
Author Affiliations +
Abstract

We focus on the subaperture polishing tool concept development for suppressing midspatial frequencies (MSF) arising from computer numerical control machining of aspherical optical surfaces. The selective effect in the MSF range is achieved by setting the tool viscoelastic properties so that rigidity increases in the frequency-domain generated by the rotational tool movement over the aspheric surface with the MSF while the tool remains flexible in the lower frequency range associated with tool radial direction movement. The mechanism of MSF removal is discussed in detail, including in terms of elasticity module frequency dependences, and is also experimentally verified. In order to monitor and optimize viscoelastic properties, especially in regard to frequency dependences, the dynamic mechanical analysis method has been developed and applied and is presented in the paper as well.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
František Procháska, Ondrej Matousek, David Tomka, Jiří Beneš, and Miroslava Pechociakova "Concept of a polishing tool based on viscoelastic properties for midspatial frequencies suppression on aspheric surfaces," Optical Engineering 58(11), 115102 (28 November 2019). https://doi.org/10.1117/1.OE.58.11.115102
Received: 22 August 2019; Accepted: 15 November 2019; Published: 28 November 2019
JOURNAL ARTICLE
7 PAGES


SHARE
Advertisement
Advertisement
RELATED CONTENT


Back to Top