Dual beam translator for use in laser doppler anemometry
Patent
·
OSTI ID:6865005
A method is described for attaining substantial spacial coincidence of the intersection volumes of two pairs of intersecting light beams in a fluid flow conduit in a Doppler anemometry device. The method comprises focusing the two pairs of light beams with a beam focusing means and selectively translating the beam paths of at least one of the pairs of beams. The paths are translated in a direction parallel to the original beam paths by a pair of rotatable transparent optical means provided in the beam paths between the beam focusing means and the fluid flow conduit.
- Assignee:
- Dept. of Energy, Washington, DC
- Patent Number(s):
- US 4637717
- OSTI ID:
- 6865005
- Country of Publication:
- United States
- Language:
- English
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