Flatness Analysis Of Hard Disks

Oded Kafri; Kathi Kreske

doi:10.1117/12.7976779

1 October 1988 Flatness Analysis Of Hard Disks

Oded Kafri, Kathi Kreske

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Optical Engineering, Vol. 27, Issue 10, 271078 (October 1988). https://doi.org/10.1117/12.7976779

Abstract

The special flatness requirements of hard disks are discussed. Color schlieren and grazing incidence interferometry, the two methods currently dominating the market, are compared with the more recently developed moire deflectometry method. We show that since the color schlieren does not detect vital disk flatness information and since interferometry is too vibration sensitive and relatively expensive, moire deflectometry is a superior method for flatness analysis of hard disks.

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Oded Kafri and Kathi Kreske "Flatness Analysis Of Hard Disks," Optical Engineering 27(10), 271078 (1 October 1988). https://doi.org/10.1117/12.7976779

Published: 1 October 1988

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