OPTICAL INTERFEROMETER
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United States of America Patent
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Issued Date -
Jan 5, 2012
app pub date -
Apr 28, 2009
filing date -
Apr 28, 2009
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A scanning optical interferometer (40) having a beamsplitter (42); a first input path (56) for an observation beam (52) and a second input path (78) for a reference beam (76) wherein both paths (56; 78) are directed towards the same beamsplitter (42) characterised in that the interferometer is configured with the first input path (56) and the second input path (78) intersecting at a location (L) before the beamsplitter (42) and in that the interferometer further comprises a dichroic filter (80) located at the intersection (L) of the two paths (56; 78) and acting to collocate both paths (56;78) in a direction towards the beamsplitter (42).
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