PROBLEM TO BE SOLVED: To improve accuracy of wavelength separation between a wavelength of a light source of OCT and a wavelength of a light source of an SLO, in a dichroic mirror.SOLUTION: An observation optical path is disposed to a transmission optical path of optical path branching means. An optical path of measuring light is disposed to a reflection optical path of the optical path branching means. Scan means and a second lens disposed between a first lens and the scan means in the optical path of the measuring light are disposed so that an incident angle to the optical path branching means of the measuring light scanned by the scan means is substantially held.COPYRIGHT: (C)2015,JPO&INPIT【課題】 ダイクロイックミラーにおいて、OCTの光源の波長とSLOの光源の波長との波長分離の精度を向上させること。【解決手段】 観察光路は光路分岐手段の透過光路に配置され、測定光の光路は光路分岐手段の反射光路に配置され、走査手段により走査される測定光が光路分岐手段に入射する角度が略保持されるように、測定光の光路における走査手段と第1のレンズとの間に配置された第2のレンズと走査手段とが配置される。【選択図】 図6
