PROBLEM TO BE SOLVED: To provide an optical coherence tomographic image generation device that can reduce turbulence of an image by camera shake.SOLUTION: An optical coherence tomographic image generation device includes a probe having a grip part and a nozzle, and having a two-dimensional scanning mechanism built therein for reflecting the light incident from one side of the grip part and the nozzle to the other side while shifting a position by time division drive； and an optical unit for dividing the light emitted from a light source into the measuring light and the reference light, and detecting the interference light obtained by interference between the scattered light having the measuring light reflected and returned from an irradiated measuring object through the probe and the reference light. The optical coherence tomographic image generation device generates an optical coherence tomographic image from the detection signal of the interference light acquired in time series, and includes control means for switching between a first operational mode for making it scan in parallel to the first direction in a light irradiation surface in the measuring object by the two-dimensional scanning mechanism and a second operational mode for making it scan in parallel to the second direction being perpendicular to the first direction.SELECTED DRAWING: Figure 7【課題】手振れによる画像の乱れを低減できる光干渉断層画像生成装置を提供する。【解決手段】光干渉断層画像生成装置は、グリップ部及びノズルを有し、前記グリップ部及び前記ノズルの一方の側から入射する光を時分割駆動によって位置をずらしながら他方の側に反射する２次元走査機構を内蔵したプローブと、光源から射出された光を測定光と参照光とに分割し、前記測定光が前記プローブを介して照射された測定対象から反射して戻ってきた散乱光と前記参照光とを干渉させた干渉光を検出する光学ユニットと、を備え、時系列に取得される前記干渉光の検出信号から光干渉断層画像を生成する光干渉断層画像生成装置であって、前記２次元走査機構によって前記測定対象における光照射面において第１方向に平行に走査させる第１動作モードと、前記第１方向に対して直交する第２方向に平行に走査させる第２動作モードと、を切り替える制御手段を備える。【選択図】図７
