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

1989-07-25

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 28, G01N 1506

Patent

active

048516970

ABSTRACT:
An optical head, to which laser light is supplied, produces, in a measuring volume, at least two focusing points at which particles flowing through the measuring volume are illuminated and cause scattered radiation which is collected by the optical head. The laser beam is directed, via at least one first light guide, to the optical head. From the optical head, the radiation received from the measuring volume is supplied, via at least one second light guide, to a light receiving means. The optical head is small-sized and may be rotated about its optical axis by means of a rotating device.

REFERENCES:
patent: 4537503 (1985-08-01), Liu
patent: 4575238 (1986-03-01), Knuhtsen et al.
patent: 4713537 (1987-12-01), Kunz et al.
Brown & Pike, Combined Laser Doppler and time of flight anemometer, 0030-7/78/060317-03, 1978 lpc business press.

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