A GLASS DISK DISTORTION EFFECT IN AN OPTICAL FLYING HEIGHT TESTER

Authors
FUKUZAWA T HISANO T WATABE H
Citation
T. Fukuzawa et al., A GLASS DISK DISTORTION EFFECT IN AN OPTICAL FLYING HEIGHT TESTER, IEEE transactions on magnetics, 32(5), 1996, pp. 3690-3692
Citations number
5
Categorie Soggetti
Engineering, Eletrical & Electronic","Physics, Applied
Journal title
IEEE transactions on magnetics → ACNP
ISSN journal
00189464
Volume
32
Issue
5
Year of publication
1996
Part
1
Pages
3690 - 3692
Database
ISI
SICI code
0018-9464(1996)32:5<3690:AGDDEI>2.0.ZU;2-K
Abstract
A flying height tester has been developed for measuring low disk-to-me dia gap and high disk rotation speeds. The tester can obtain two-dimen sional measurement data for a flying head, using an adaptive detection algorithm and signals from a color television camera. A depolarizing unit is used to suppress measurement errors caused by the photoelastic effect of the glass disk at high rotation speeds.