Interferometer arrangement with adjustable optical path length difference for detecting a distance between different layers of an eye
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United States of America Patent
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Feb 17, 1998
Grant Date -
N/A
app pub date -
Feb 9, 1996
filing date -
Feb 10, 1995
priority date (Note) -
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Abstract
An interferometer arrangement has an adjustable optical path length difference in at least one interferometer arm and a photoelectric receiver for detecting the interference signals generated by the interferometer. An incremental grating transmitter is coupled to the arrangement with a device for changing the optical path length difference and for generating a reference signal which changes its frequency like that of the interference signal depending on the rate of change of the optical path difference.
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