Patent ID: 6191862
Filing Date: 2001-02-20
Classification: A61B,G01B,G01N

Abstract:
An apparatus, comprising:an interferometer which receives broadband light and outputs a reference output signal and a probe signal directed to a sample which produces a sample return signal;an optical path-length scanning unit which receives the reference output signal from the interferometer and outputs a reference return signal to said interferometer, said interferometer combining the reference return signal and the sample return signal and outputting an interferometer output signal;a detector unit which receives the interferometer output signal and outputs a detector output signal;a scan analyzer and correction unit coupled to said detector unit that receives the detector output signal; anda scanning unit controller coupled to an optical path-length scanning unit, said scanning unit controller controls said optical path-length scanning unit and outputs a controller signal to said scan analyzer and correction unit, wherein said scan analyzer and correction unit analyzes the controller signal and the detector output signal and determines scan correction information.