Transceiver head for longitudinal doppler speed indicator
AssigneeSextant Avionique
InventorBertrand Morbieu
Life of this patent
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Abstract
Transceiver head for a longitudinal Doppler speed indicator. Transceiver head for a longitudinal Doppler speed indicator with at least one pair of measuring axes. It comprises: a laser (1); polarization switching means (4) on the path of the laser beam; polarization separating means (5) on the path of the polarized beam that comes from the switching means; control means (5) for switching the switching means alternately from one state to another to direct the beam alternately to one measuring axis and then to another depending on its polarization state.
Claims11
A transceiver head for a longitudinal laser speed indicator with at least one pair of measuring axes, comprising:
- a laser;
- a polarization switching means on the path of the laser beam that comes from said polarization switching means, wherein said polarization separating means are arranged such that said beam which comes from said separating means is moved parallel to itself during switching, with output optics being arranged to direct said beam to one of said measuring axes depending upon its movement;
- and
- control means for switching said switching means from one state to another to direct said beam alternately to one measuring axis and then to another depending upon its polarization state.
A transceiver head for a longitudinal laser speed indicator with at least one pair of measuring axes, comprising:
- a laser;
- a polarization switching means on the path of the laser beam that comes from said polarization switching means,
- control means for switching said switching means from one state to another to direct said beam alternately to one measuring axis and then to another depending upon its polarization state;
- and
- a quarterwave plate at the output of said polarization separation means.
Dependencies are inferred from the claim text.