Measuring and testing – Specimen stress or strain – or testing by stress or strain... – By loading of specimen
Patent
1997-02-20
1998-07-21
Noori, Max H.
Measuring and testing
Specimen stress or strain, or testing by stress or strain...
By loading of specimen
73655, 356356, G01B 1116
Patent
active
057837520
ABSTRACT:
Position of a diffusely scattering surface is detected by interfering backscattered light from respective input beams which illuminate a common spot. Through polarization of the input beams and appropriate filtering, backscattered light is isolated from specularly reflected light and interfered to form a fringe pattern on a detector. The position sensor has particular applicability as a push pin sensor in a hard disk servo system.
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Horwitz Bruce A.
Mitchell Donald K.
Thorburn William G.
MicroE
Noori Max H.
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