Ophthalmologic apparatus
AssigneeCanon Kabushiki Kaisha
InventorTomoyuki Ikegami
Life of this patent
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Abstract
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.
Claims16
An ophthalmologic apparatus comprising:
- 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 the subject's eye;
- and
- an image-forming optical system configured to receive a light flux from the subject's eye via the beam splitting member, the image-forming optical system including an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member.
An ophthalmologic apparatus comprising:
- a projection optical system configured to project a light flux on a subject's eye;
- an objective lens arranged to face the subject's eye;
- a beam splitting member disposed in an optical path between the objective lens and the subject's eye and configured to form a split optical path;
- an image-forming optical system including the objective lens which receives a light flux from the subject's eye via the beam splitting member, the image-forming optical system including an optical element having an optical characteristic that reduces astigmatism generated by the beam splitting member;
- an imaging unit disposed on an image-forming plane of the image-forming optical system;
- and
- an obtaining unit configured to obtain unique information of the subject's eye or alignment information with respect to the subject's eye based on an output from the imaging unit.
An ophthalmologic apparatus comprising:
- a beam splitting member configured to form a split optical path;
- an optical member configured to be arranged in a tilted state where astigmatism caused by the beam splitting member can be reduced;
- an illumination unit configured to illuminate a subject's eye;
- and
- a detection unit configured to detect a light flux from the subject's eye via the beam splitting member and the optical member.
Dependencies are inferred from the claim text.