Patent ID: 8988689
Filing Date: 2015-03-24
Classification: A61B,G01J

Abstract:
1. A spectroscopic measurement for measuring an object, comprising: a) a division optical system configured to join light rays emitted in a variety of directions from a measurement point of the object to form a beam, and configured to divide the beam into a first beam and a second beam; b) an optical path length difference changer configured to provide a continuous change of an optical path length difference between the first beam and the second beam; c) an imaging optical system configured to focus the first beam and the second beam on a single line that extends in a direction which is different from an optical axis of the first beam and an optical axis of the second beam so as to form a linear interference image, wherein the first beam and the second beam enter into the imaging optical system separately; d) a detection unit configured to detect a light intensity distribution of the linear interference image along the interference image; and e) a processing unit configured to obtain an interferogram of the measurement point of the object based on the light intensity distribution of the interference image detected by the detection unit, and configured to Fourier-convert the interferogram to obtain a spectrum.