PROBLEM TO BE SOLVED: To provide an optical interference tomography apparatus capable of suppressing deterioration of an SNR of an image due to amplitude fluctuation of a MEMS minute vibration mirror in a frequency sweeping light source.SOLUTION: An optical interference tomography apparatus includes: a light source part that sweeps a frequency of an emitted light an interference part for dividing the light emitted from the light source part into an irradiation light to be irradiated onto the ocular fundus of a subject and a reference light, and generating an interference light by the reflection light of the irradiation light from the ocular fundus and the reference light a scanning part for scanning the ocular fundus with the irradiation light a detection part for detecting the interference light an information acquisition part for acquiring the information on the ocular fundus based on the interference light an optical filter part for reflecting or transmitting a light of a specific frequency of the light emitted from the light source part and a light detection device for receiving the reflected light or the transmitted light from the optical filter part and generating a detection signal. The light source part includes a light source having a MEMS device used for frequency sweeping of the light emitted from the light source part, and a control part for controlling the light output of the light source part using the detection signal.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2017,JPO&INPIT【課題】周波数掃引光源におけるMEMS微小振動ミラーの振幅変動による画像のSNRの低下を抑制することができる光干渉断層計を提供する。【解決手段】射出する光の周波数を掃引する光源部と、光源部から射出された光を被検体の眼底へ照射する照射光と参照光に分割し、眼底からの照射光の反射光と参照光による干渉光を発生させる干渉部と、眼底を照射光で走査する走査部と、干渉光を検出する検出部と、干渉光に基づいて、眼底の情報を取得する情報取得部と、光源部から射出された光のうち特定の周波数の光を反射又は透過する光学フィルタ部と、光学フィルタ部からの反射光又は透過光を受光して検出信号を生成する光検出装置とを備え、光源部は、光源部から射出される光の周波数掃引に用いられるMEMSデバイスを有する光源と、検出信号を用いて、光源部の光出力を制御する制御部とを含む、光干渉断層計。【選択図】図1
