PROBLEM TO BE SOLVED: To provide an OCT apparatus capable of acquiring wide-angle OCT data in excellent signal strength.SOLUTION: In an OCT apparatus, an OCT optical system guides a measurement light to a wide-angle region including a fundus central part and a fundus peripheral part with respect to one transverse direction that the measurement light crosses the fundus, and includes a first reference optical path having an optical path length set for acquiring OCT data including the fundus central part, and a second reference optical path having an optical path length set for acquiring OCT data including the fundus peripheral part, which is different from the first reference optical path. An image processor acquires OCT data including the fundus central part based on an interference signal of the measurement light guided to the fundus central part and a reference light from the first reference optical path, and acquires OCT data including the fundus peripheral part based on an interference signal of the measurement light guided to the fundus peripheral part and a reference light from the second reference optical path.SELECTED DRAWING: Figure 16COPYRIGHT: (C)2019,JPO&INPIT【課題】 広角のOCTデータを良好な信号強度にて取得できるOCT装置を提供する。【解決手段】 OCT装置であって、OCT光学系は、測定光が眼底上を横断する一つの横断方向に関して眼底中心部と眼底周辺部を含む広角領域に測定光を導くOCT光学系であって、眼底中心部を含むOCTデータを得るために設定された光路長を有する第1の参照光路と、眼底周辺部を含むOCTデータを得るために設定された光路長を有し第1の参照光路とは異なる第2の参照光路と、を備え、画像処理器は、眼底中心部に導かれた測定光と第1の参照光路からの参照光との干渉信号に基づいて眼底中心部を含むOCTデータを得ると共に、眼底周辺部に導かれた測定光と第2の参照光路からの参照光との干渉信号に基づいて眼底周辺部を含むOCTデータを得る。【選択図】 図16
