Axial speed-measuring device including a fabry-perot interferome

Details Axial speed-measuring device including a fabry-perot interferome Axial speed-measuring device including a fabry-perot interferome

1993-03-15

1995-02-28

Turner, Samuel A.

Optics: measuring and testing

By dispersed light spectroscopy

Utilizing a spectrometer

356 285, G01B 902

Patent

active

053942434

ABSTRACT:
A device for measuring axial speed by means of a light source emitting a parallel ray beam through an optical system comprising a Fabry-Perot interferometer, spectrum offset optical means, and an interference filter, the optical system being used for receiving backscattered light flux, and the device further comprising at least one photodetector on which the light flux leaving the optical system is focused, the device serving, in particular, to measure axial wind speed at distances lying between about 10 meters and about 100 meters.

REFERENCES:
patent: 5088815 (1992-02-01), Garnier et al.
Hemsing, "Velocity Sensing Interferometer (VISAR) Modification", Rev. Sci. Instrum., vol. 50, No. 1, Jan. 1979, pp. 73-78.

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