OPTICAL TESTER FOR CONTROL OBJECT SURFACE DISPLACEMENTS Russian patent published in 2009 - IPC G01B9/00 

FIELD: physics; measurement.

SUBSTANCE: optical tester for control object surface displacements contains optically connected series coherent optical source, optical system, beam splitter and reflector. Besides optical tester contains photodetector for optical field intensity recording within preset interference pattern region and control object surface displacement converter based on measurement of optical field intensity within preset interference pattern region and logging. Control object is followed the optical system focusing radiation to its surface in the form of flashing point. Beam splitter, reflector and photodetector are rigidly fixed on common foundation equipped with moving mechanism providing increasing of space between control object surface and external surface of beam splitter, if range of measured displacements is increased, and providing reducing of space between control object surface and external surface of beam splitter is reduced, if range of measured displacements is reduced.

EFFECT: higher performance of optical testers for control object surface displacements due to higher range of measured displacement values.

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