A device for accurately measuring flying heights of a read/write head in a disk drive down to zero microinches using interferometry, wherein the flying height of the head above the disk surface is calculated by directing white light to the under side of a rotating disk. An interference pattern is obtained...http://www.google.fr/patents/US5473431?utm_source=gb-gplus-shareBrevet US5473431 - Interferometric flying height measuring device including an addition of a spacer layer
Interferometric flying height measuring device including an addition of a ...
