Interferometers
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United States of America Patent
Stats
-
Feb 7, 1989
Grant Date -
N/A
app pub date -
Dec 11, 1986
filing date -
Feb 25, 1985
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An interferometer which comprises: (1) a single, coherent light source; (2) a first converging lens positioned on the optical axis of said coherent light source; (3) a beam-splitting arrangement positioned on said optical axis and spaced from said first converging lens by a distance greater than the focal length of said lens; (4) a second converging lens positioned on said lens; (4) a second converging lens positioned on said optical axis to receive and to focus the two beams emanating in use from the beam-splitting arrangement; and (5) a mirror arrangement positioned so that the beams focussed by said second converging lens impinge on the mirror system and so that the reflected beams are brought to intersect at a focal point and with a large angle between the principal rays of the two beams.
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