| 发明名称 | Ophthalmologic apparatus | ||
| 摘要 | An ophthalmologic apparatus includes a projection optical system configured to project a light flux on a subject's eye, a beam splitting member configured to form a split optical path corresponding to a light flux from a subject's eye, and an image-forming optical system configured to receive via the beam splitting member a light flux from the subject's eye, the image-forming optical system including an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member. | ||
| 申请公布号 | US8931901(B2) | 申请公布日期 | 2015.01.13 |
| 申请号 | US201314055187 | 申请日期 | 2013.10.16 |
| 申请人 | Canon Kabushiki Kaisha | 发明人 | Ikegami Tomoyuki |
| 分类号 | A61B3/10;A61B3/14 | 主分类号 | A61B3/10 |
| 代理机构 | Canon USA Inc. IP Division | 代理人 | Canon USA Inc. IP Division |
| 主权项 | 1. An ophthalmologic apparatus comprising: a projection optical system configured to project a light flux on a fundus of a subject's eye; a beam splitting member configured to form a split optical path corresponding to a light flux from the fundus of the subject's eye; and an image-forming optical system configured to receive a light flux from the fundus of the subject's eye via the beam splitting member, and to form an image of the light flux on an imaging unit; an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member; and an obtaining unit configured to obtain refractive power information of the subject's eye based on an output ring-shaped image from the imaging unit. | ||
| 地址 | Toyko JP | ||