PROBLEM TO BE SOLVED: To construct a high-resolution frame image despite environmental fluctuation.SOLUTION: A scanning type ophthalmographic apparatus includes: an fundus oculi scanning optical system 1 that scans the fundus oculi Ef, while applying illumination spotlight Sp to the fundus oculi Ef of a subjects eye E an image receiving optical system 3 that receives the illumination spotlight Sp and outputs an image receiving signal and a fundus oculi image construction part 4 that constructs a fundus oculi image using the image receiving signal. The fundus oculi scanning optical system 1 has a scanning mirror 10 for scanning the fundus oculi Ef in the vertical direction and the horizontal direction, and the scanning mirror 10 is reciprocatingly oscillated between a forward movement direction and a backward movement direction by a mirror drive circuit. A mask 41 is provided on an optical path of the fundus oculi scanning optical system 1 at a position of a point Q1" conjugate to the fundus oculi Ef, the mask being used for aligning an image importing end position of a scan in the forward movement direction with an image importing start position of a scan in the backward movement direction. The scanning type ophthalmographic apparatus adjusts image importing start timing with respect to a deflection angle of the scanning mirror 10 in the forward movement direction, and image importing start timing with respect to a deflection angle of the scanning mirror 10 in the backward movement direction.COPYRIGHT: (C)2013,JPO&INPIT【課題】環境変動にかかわらず、高解像度のフレーム画像を構築する。【解決手段】被検眼Eの眼底Efに照射スポット光を照射しつつ眼底Efを走査する眼底走査光学系1と、照射スポット光を受像して受像信号を出力する受像光学系3と、受像信号を用いて眼底像を構築する眼底像構築部4とを有し、眼底走査光学系1は眼底Efを垂直方向と水平方向とに走査する走査ミラー10を有し、走査ミラー10はミラー駆動回路により往動方向と復動方向との間で往復振動され、眼底走査光学系1の光路には眼底Efと共役な点Q1”の位置に、往動方向の走査の画像取り込み終端位置と復動方向の走査の画像取り込み開始位置とを揃えるために用いるマスク41が設けられ、走査ミラー10の往動方向の振れ角度に対する画像の取り込み開始タイミングと走査ミラー10の復動方向の振れ角度に対する画像の取り込み開始タイミングとを調整する。【選択図】図1
