Readout beamsplitting/combining apparatus for ring laser gyro
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United States of America Patent
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Apr 4, 1995
Grant Date -
N/A
app pub date -
Mar 23, 1992
filing date -
Dec 14, 1988
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A readout apparatus for both partial beams (101,102) of a ring laser gyro (100) is designed strictly symmetrical so that each partial beam until its detection on a photodetector (114-117) travels the same path length. Both partial beams are differently polarized (105,106), are superimposed (107,108,109) and then again geometrically split-up (110,111) whereby a fixed phase relationship (90.degree.) may be introduced between the split-up partial beams (FIG. 1).
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