PROBLEM TO BE SOLVED: To enable an examiner to easily acquire a tomographic image of an object to be inspected in an intended size.SOLUTION: In an optical tomographic apparatus for acquiring tomographic images on the basis of light in which return light from the object to be inspected, that is irradiated with measurement light, and reference light corresponding to the measurement light are combined, a measurement light optical path length changing means for changing the optical path length of the measurement light, a display control means for making a display means display a display form for receiving an instruction on the size of the imaging range of the tomographic image, and a control means for controlling the measurement light optical path length changing means according to the instruction received by the display form are disposed, and the optical path length of the measurement light is changed according to reception of the instruction to change the imaging range through the display form.COPYRIGHT: (C)2013,JPO&INPIT【課題】 検者が、意図した大きさの被検査物の断層画像を容易に取得可能とする。【解決手段】 測定光を照射した被検査物からの戻り光と、該測定光に対応する参照光とを合波した光に基づいて断層画像を取得する光断層撮像装置に対して、測定光の光路長を変更する測定光光路長変更手段と、断層画像の撮像範囲の大きさの指示を受け付ける表示形態を表示手段に表示させる表示制御手段と、表示形態が受け付けた指示に応じて、測定光光路長変更手段を制御する制御手段と、を配し、該表示形態を介して撮像範囲の変更の指示を受け取ることに応じて測定光の光路長を変更することとする。【選択図】 図4
