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Apparatus and method for rangings and noise reduction of low coherence interferometry LCI and optical coherence tomography OCT signals by parallel detection of spectral bands

  • US 7,797,119 B2
  • Filed: 12/13/2007
  • Issued: 09/14/2010
  • Est. Priority Date: 01/24/2002
  • Status: Expired due to Term
First Claim
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1. An apparatus for controlling a phase of a signal, comprising:

  • a system which is configured to;

    (a) obtain at least one interference signal which is based on a first signal from a sample and a second signal from a reference;

    (b) during (a), modulate the phase of the at least one interference signal to produce first information;

    (c) determine offset information between the first signal and the second signal based on the first information;

    (d) control the phase of the at least one interference signal using the offset information to generate second information; and

    (e) generate an image which includes a plurality of depth profiles of at least a portion of the sample using the second information.

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