Apparatus for measuring flow vectors in gas currents

Details Apparatus for measuring flow vectors in gas currents Apparatus for measuring flow vectors in gas currents

1987-08-12

1989-06-20

Willis, Davis L.

Optics: measuring and testing

By particle light scattering

With photocell detection

356 28, G01N 2153

Patent

active

048404861

ABSTRACT:
The apparatus contains a dispersion means (DP) decomposing the incident laser beam into a number of colors (C1-C5) spacially separated from each other. The focusing points of said colors are subsequently traversed by particles contained in the flow. The light from the measuring volume (MV) is conducted via the dispersion means to a light receiving means (AV) in which the light is decomposed again into the individual colors. Due to a switching means (SE), the colors used for the measurment are selectible. Thus, the space of the focusing points used for the measurement may be varied.

REFERENCES:
patent: 3830568 (1974-08-01), Allen
R. G. W. Brown, E. R. Pike, Combined Laser Doppler and time of flight aneeter, 0030-3992/78/060317-03/PC Business Press.

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