Patent ID: 8534835

Claim:
An optical tomographic image photographing apparatus for photographing a tomographic image of an object, comprising: an interference optical system including: a measurement light source; and a splitter configured to split light emitted from the measurement light source, such that the light is split into a measurement optical path for guiding a part of the light to the object as measurement light and into a reference optical path for generating reference light, the interference optical system configured to combine reflected light from the measurement optical path, the reflected light being obtained by reflection of the measurement light on the object, with the reference light from the reference optical path, to guide combined light to a detector; an optical scanner arranged in the measurement optical path for scanning the measurement light on the object; a driving part configured to move an optical member arranged in the measurement optical path or the reference optical path in an optical-axis direction in order to adjust an optical path difference between the measurement optical path and the reference optical path; an image obtaining part connected to the detector for obtaining a tomographic image of the object based on a light receiving signal output from the detector; a monitor; and a control unit configured to detect positional deviation of the tomographic image in a depth direction thereof based on the signal output from the detector, and perform image processing, based on the detected positional deviation, to correct a display position of the tomographic image such that the tomographic image obtained by the image obtaining part is displayed in a predetermined position on the monitor.