Method and apparatus for positioning object in space using a low

Details Method and apparatus for positioning object in space using a low Method and apparatus for positioning object in space using a low

1997-08-27

2000-05-16

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356360, 356363, G01B 902

Patent

active

060644818

ABSTRACT:
An object is positioned in space by using a beam splitter to split a low-coherence laser light beam into a probe beam and a reference beam. The probe beam is projected at the target object, while the reference beam is reflected by a pair of mirrors synchronized along light paths and scanned at different amplitudes, to form two beams of equal intensity, and light reflected by the object and the interference fringes are detected together to obtain fringe signals with sharpened profile lines.

REFERENCES:
patent: 4355900 (1982-10-01), Nussmeier
patent: 5301010 (1994-04-01), Jones et al.
patent: 5394240 (1995-02-01), Mastaumoto

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