Optical coherence tomography device and method having improved boundary control and distortion correction
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United States of America Patent
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Apr 17, 2012
Grant Date -
Feb 18, 2010
app pub date -
Aug 4, 2005
filing date -
Aug 18, 2004
priority date (Note) -
Expired
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Abstract
Variants of an interferometric device are developed for examining internal structures of objects by means of optical coherence tomography, which allow for controlling a boundary location of the observation range. The device also allows for correcting a distortion of the tomographic image of the object under study, caused by lateral scanning, due to aberrations of the optical path length for the low-coherence optical radiation directed towards the object. Embodiments of the device include either one, or two fiber-optic controlled scanners, which in different combinations perform a function of in-depth scanning of the coherence window of low-coherence optical radiation within the observation range, a function of controlling a boundary location of the observation range, and a function of compensating the optical path length aberration for the low-coherence optical radiation directed towards the object, caused by lateral scanning.
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