G - Physics – 01 – S
Patent
G - Physics
01
S
G01S 17/58 (2006.01)
Patent
CA 2724598
The general field of the invention is that of optical anemometric probes. In a first architecture, the probe according to the invention comprises a laser source (201) emitting a linearly polarized primary light beam and an optical block (220) comprising splitting means (202) for separating the said primary beam, an optical reference pathway (R), an optical "emission" pathway (P) and an optical measurement pathway (230). The optical block comprises optical means of rotation of the polarization (210) arranged at the output of the laser source and before the splitting means. The optical emission pathway comprises an optical circulator (204), a first optical "emission/reception" head (205) illuminating a first measurement zone and a second optical "emission/reception" head (205) illuminating a second measurement zone. The optical circulator (204) comprises four ports, a first input port, a second and a third input/ouput port linked respectively to the first optical head and to the second optical head and a fourth port linked to the optical measurement pathway. In a second architecture akin to the first, the probe comprises a laser source emitting a linearly polarized primary light beam and two optical blocks each comprising an optical "emission" pathway comprising a four-pathway circulator and two optical heads.
Rondeau Philippe
Schlotterbeck Jean-Pierre
Marks & Clerk
Thales
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