PROBLEM TO BE SOLVED: To acquire a front image of the ocular fundus appropriately.SOLUTION: An SLO 1 includes: an irradiation optical system 10 having a light source 11, a scanning part 16 for scanning a laser beam emitted from the light source 11 on the ocular fundus Er, and an objective lens system 17 disposed between an eye E to be examined and the scanning part 16 for forming a turning point P of the laser beam guided from the scanning part 16 and a light receiving optical system 20 that shares the objective lens system 17 with the irradiation optical system 10 and includes a light receiving element for receiving light from the ocular fundus Er accompanying the irradiation of the laser beam. The objective lens system 17 includes a first lens system 17a for bending the laser beam toward the turning point P, and a second lens system 17b disposed between the first lens system 17a and the scanning part 16. The second lens system 17b has an inclined lens disposed inclined with respect to an optical axis L1. The lens surface on the light source side in the inclined lens has a larger curvature radius than the lens surface on the light source side in the first lens system 17a.SELECTED DRAWING: Figure 2COPYRIGHT: (C)2018,JPO&INPIT【課題】眼底の正面画像を良好に得ること。【解決手段】SLO1は、光源11と、光源11から発せられたレーザー光を眼底Er上で走査するための走査部16と、被検眼Eと走査部16との間に配置され、走査部16から導かれたレーザー光の旋回点Pを形成する対物レンズ系17と、を備える照射光学系10と、対物レンズ系17を照射光学系10と共用すると共に、レーザー光の照射に伴う眼底Erからの光を受光する受光素子を有する受光光学系20と、を備える。ここで、対物レンズ系17は、レーザー光を旋回点Pへ向けて折り曲げるための第1レンズ系17aと、第1レンズ系17aと走査部16との間に配置される第2レンズ系17bと、を含み、第2レンズ系17bは、光軸L1に対して傾斜して配置される傾斜レンズを有し、傾斜レンズにおける光源側のレンズ面は、第1レンズ系17aにおける光源側のレンズ面よりも大きな曲率半径を持つ。【選択図】図2
