Patent ID: 7880895
Filing Date: 2011-02-01
Classification: A61B,G01B,G01N

Abstract:
1. An optical tomographic photographing apparatus comprising: an interference optical system arranged to detect spectral information from interference light of measurement light projected onto an examined object and reference light, and comprising an optical scanner arranged to scan the measurement light which is emitted from a light source on the examined object; and a driving unit arranged to change an optical path length by moving an optical member disposed in an optical path of one of the reference light and the measurement light in an optical axis direction; a monitor; a control unit arranged to control driving of the driving unit, and to obtain a tomographic image of the examined object by performing Fourier analysis on the spectral information and display the obtained tomographic image on a screen of the monitor; and an image setting unit arranged to previously set the tomographic image which is displayed on the screen of the monitor to be one of a normal image and an inverted image, wherein the control unit is arranged to control the driving of the driving unit so as to when the presence of the tomographic image is detected, determine whether the tomographic image is the normal image or the inverted image, and when it is determined that the tomographic image is not the image previously set by the image setting unit, move the optical member in a direction such that the previously set image is obtained, and when it is determined that the tomographic image is the image previously set by the image setting unit, move the optical member so that a position of the tomographic image in the depth direction coincides with a predetermined adjustment position and then stop the driving of the driving unit.