Patent ID: 7835010
Filing Date: 2010-11-16
Classification: A61B,G01B,G01N

Abstract:
1. An optical coherence tomography system comprising: a tunable light source for scanning optical emission wavelength periodically; an optical interferometer for dividing light from said tunable light source into reference light and irradiation light to an object and for generating coherent light of reflected light from the object and the reference light; a light receiving element for receiving the coherent light obtained by said optical interferometer to obtain a beat signal; and a signal processor for: fetching the beat signal of said light receiving element and assigning data numbers to an output from said light receiving element at a regular time interval when a reflector is disposed at a measurement position of the object; calculating data numbers based on peaks of said beat signal and assigning a peak number to each of the peaks; calculating an approximated curve showing data numbers with respect to said peak numbers; dividing variation in said peak number into any number; calculating data numbers corresponding to the divided peak number according to said approximated curve to acquire a data acquisition sequence; calculating a signal level at a timing of each data number of said data acquisition sequence from an output obtained by said light receiving element at a regular time interval when the measured object is disposed at the measurement position; and calculating a tomogram of said object by Fourier transforming the calculated signal level of a regular frequency interval.