Apparatus for the three-dimensional determination of flows

Details Apparatus for the three-dimensional determination of flows Apparatus for the three-dimensional determination of flows

1993-10-25

1995-08-08

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

356 28, G01N 1506

Patent

active

054401445

ABSTRACT:
An apparatus for the three-dimensional determination of flows has a light source for briefly illuminating a light section (3) and a stereoscopic recording device (10). The stereoscopic recording device (10) comprises two equivalent objectives (11, 12) aligned parallel to each other as well as perpendicular to the plane (22) of the light section (3), and behind the objectives (11, 12) two optical sensor fields (15, 16) aligned parallel to the plane (22). A forward displacement device for the synchronized forward displacement of the projections of the light source (3) onto the two sensor fields (15, 16) has two revolving mirrors (13, 14) aligned parallel and rotating in synchronization about a common axis of rotation (23) as well as in synchronization with the light source, whereby the axis of rotation (23) runs parallel to an imaginary line joining the two objectives (11, 12).

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patent: 5148229 (1992-09-01), Wiseall
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Ronald J. Adrian, "Image Shifting Technique to Resolve Directional Ambiguity in Double-Pulsed Velocimetry", Applied Optics, 1 Nov. 1986, vol. 25, No. 21, pp. 3855-3858.

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