Patent ID: 9107611
Filing Date: 2015-08-18
Classification: A61B

Abstract:
1. An optical coherence tomography device (OCT) comprising: a mire ring optical system for emitting a measuring mire ring light to an object to be examined; an image formation section for detecting an image of an illumination light reflected from the object and an image of the mire ring light reflected from the object; a tomographic image formation section for emitting a signal light to the object and obtaining a tomographic image of the object; a dichroic mirror for separating an optical path of the illumination light reflected from the object from the optical path of the signal light originating from the tomographic image formation section and delivering a reflected image of the illumination light and a reflected image of the signal light to the image formation section and the tomographic image formation section, respectively; an objective lens for condensing the signal light and the illumination light which are incident to and reflected from the object; and a controller for calculating movement distance of the OCT in up-and-down directions and right-and-left directions, from the difference between a position of the image of the mire ring light and a position of an optical axis of the OCT, and then moving the OCT according to the calculated movement distance in up-and-down directions and right-and-left directions thereby making the position of the image of the mire ring light to be coincided with the position of the optical axis of the OCT.