Patent ID: 8358421
Filing Date: 2013-01-22
Classification: A61B,G01B

Abstract:
1. An optical tomographic imaging apparatus comprising: a first optical interferometer, in which a beam emitted from a first light source is split into a first measuring beam and a first reference beam, the first measuring beam being guided to an object, wherein a first tomographic image of the object is acquired by using an interference light between a return beam of the first measuring beam reflected on or scattered from the object and the first reference beam; a first reference beam path length changing unit configured to change a beam path length of the first reference beam; a second optical interferometer, in which a beam emitted from a second light source is split into a second measuring beam and a second reference beam, the second measuring beam being guided to the object, wherein a second tomographic image of the object is acquired by using an interference light between a return beam of the second measuring beam reflected on or scattered from the object and the second reference beam; a second reference beam path length changing unit which is provided on the beam paths of the first and second reference beams and which is configured to change beam path lengths of the first and second reference beams independently of the first beam path length changing unit; a detecting unit configured to detect a moving amount of the object based on the second tomographic image; and a controlling unit configured to control the second reference beam path length changing unit so as to change the beam path lengths of the first and second reference beams based on the moving amount.