Ophthalmologic apparatus, and ophthalmologic control method and program
AssigneeCanon Kabushiki Kaisha
InventorsKoichi Ohta, Toshiaki Okumura
Life of this patent
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Abstract
An ophthalmologic apparatus, when an output result of an imaging unit provided in an optical path of an imaging optical system satisfies a predetermined condition, stops controlling a driving unit in at least one direction based on a positional relationship of an image of the light flux, which has been reflected by a cornea of the subject's eye and regulated by a light flux regulation unit provided in the optical path of the imaging optical system, and maintains the control of the driving unit in the other directions.
Claims16
An ophthalmologic apparatus comprising:
- an acquisition unit configured to acquire information specific to a subject's eye;
- a driving unit configured to drive the acquisition unit for alignment with the subject's eye;
- a projection unit configured to project a light flux for alignment onto a cornea of the subject's eye;
- an anterior eye illumination unit configured to illuminate an anterior eye portion of the subject's eye;
- an imaging unit configured to image the anterior eye portion of the subject's eye via an imaging optical system;
- a light flux regulation unit provided in an optical path of the imaging optical system;
- and
- a drive control unit configured to stop controlling the driving unit in at least one direction based on a positional relationship of an image of the light flux, which has been reflected by the cornea of the subject's eye and regulated by the light flux regulation unit, and to maintain the control of the driving unit in the other directions when an output result of the imaging unit satisfies a predetermined condition.
A control method for an ophthalmologic apparatus including an acquisition unit configured to acquire information specific to a subject's eye, a driving unit configured to drive the acquisition unit for alignment with the subject's eye, a projection unit configured to project a light flux for alignment onto a cornea of the subject's eye, an anterior eye illumination unit configured to illuminate an anterior eye portion of the subject's eye, an imaging unit configured to image the anterior eye portion of the subject's eye via an imaging optical system, and a light flux regulation unit provided in an optical path of the imaging optical system, the control method comprising:
- stopping controlling the driving unit in at least one direction based on a positional relationship of an image of the light flux, which has been reflected by the cornea of the subject's eye and regulated by the light flux regulation unit provided in an optical path of the imaging optical system when an output result of the imaging unit satisfies a predetermined condition;
- and
- maintaining the control of the driving unit in the other directions.
An ophthalmologic apparatus comprising:
- an illuminating unit configured to illuminate an anterior eye portion of a subject's eye;
- a light flux regulation unit configured to regulate a light flux provided in an optical path of an imaging optical system for imaging the anterior eye portion of the subject's eye;
- and
- a retracting unit configured to retract the light flux regulation unit to the outside of the optical path when an output result of an imaging unit, which is provided in the optical path of the imaging optical system, satisfies a predetermined condition.
An control method for an ophthalmologic apparatus including an anterior eye illumination unit configured to illuminate an anterior eye portion of a subject's eye, and a light flux regulation unit provided in an optical path of an imaging optical system for imaging the anterior eye portion of the subject's eye, the control method comprising:
- retracting the light flux regulation unit to the outside of the optical path when an output result of an imaging unit, which is provided in the optical path of the imaging optical system, satisfies a predetermined condition.
An ophthalmologic apparatus comprising:
- an acquisition unit configured to acquire information specific to a subject's eye;
- a projection unit configured to project a light flux for alignment onto a cornea of the subject's eye;
- an anterior eye illumination unit configured to illuminate an anterior eye portion of the subject's eye;
- a light flux regulation unit configured to regulate a light flux provided in an optical path of an imaging optical system for imaging the anterior eye portion of the subject's eye;
- a drive unit configured to drive the acquisition unit with respect to the subject's eye based on a positional relationship of an image of the light flux, which has been reflected by the cornea of the subject's eye and regulated by the light flux regulation unit;
- and
- a drive control unit configured to control the driving unit to stop driving of the acquisition unit in up-and-down direction and to maintain driving of the acquisition unit in right-and-left and back-and-forth directions when an output result of an imaging unit, which is provided in the optical path of the imaging optical system, satisfies a predetermined condition.
A control method for an ophthalmologic apparatus including an acquisition unit configured to acquire information specific to a subject's eye, a projection unit configured to project a light flux for alignment onto a cornea of the subject's eye, an anterior eye illumination unit configured to illuminate an anterior eye portion of the subject's eye, a light flux regulation unit configured to regulate a light flux provided in an optical path of an imaging optical system for imaging the anterior eye portion of the subject's eye, and a drive unit configured to drive the acquisition unit with respect to the subject's eye based on a positional relationship of an image of the light flux, which has been reflected by the cornea of the subject's eye and regulated by the light flux regulation unit, the control method comprising:
- controlling the driving unit to stop driving of the acquisition unit in up-and-down direction and to maintain driving of the acquisition unit in right-and-left and back-and-forth directions when an output result of an imaging unit, which is provided in the optical path of the imaging optical system, satisfies a predetermined condition.
Dependencies are inferred from the claim text.