Ophthalmic apparatus, adaptive optical system, and image generating apparatus
AssigneeCanon Kabushiki Kaisha
InventorKenichi Saito
Life of this patent
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Abstract
An ophthalmic apparatus includes an aberration correction unit which corrects aberration occurring in light irradiating an eye to be examined; and a common optical system which is commonly provided for an optical path of irradiated light on the aberration correction unit and an optical path of reflected light from the aberration correction unit. The common optical system includes at least one optical element, and areas through which the irradiated light and the reflected light respectively pass overlap each other on the optical element.
Claims30
An ophthalmic apparatus comprising:
- an aberration correction unit adapted to correct aberration occurring in light irradiating an eye to be examined;
- and
- a common optical system commonly provided for an optical path of irradiated light on the aberration correction unit and an optical path of reflected light from the aberration correction unit,
- wherein the common optical system includes at least one optical element, and
- wherein areas through which the irradiated light and the reflected light respectively pass overlap each other on the at least one optical element.
An adaptive optical system comprising:
- a wavefront sensor which receives reflected light of light irradiated from a light source to an object to be detected and detects a wavefront of the object;
- a wavefront correction unit placed at a position optically conjugate to the wavefront sensor and adapted to correct wavefront aberration obtained based on a detection result on the wavefront detected by the wavefront sensor;
- and
- a common optical system which causes light from a first intermediate image irradiated from the light source and condensed to propagate through a first optical path, causes the propagating light to strike the wavefront correction unit, causes light reflected by the wavefront correction unit to propagate through a second optical path different from the first optical path, and condenses the light as a second intermediate image different from the first intermediate image,
- wherein the common optical system includes at least one optical element, and
- wherein the wavefront correction unit is placed at a position of an incident pupil of the common optical system, and the first intermediate and the second intermediate image are condensed on an image plane of the common optical system having the incident pupil.
A control method of an ophthalmic apparatus, the ophthalmic apparatus comprising (a) an aberration correction unit adapted to correct aberration occurring in light irradiating an eye to be examined, and (b) a common optical system commonly provided for an optical path of irradiated light on the aberration correction unit and an optical path of reflected light from the aberration correction unit, wherein the common optical system includes at least one optical element, and wherein areas through which the irradiated light and the reflected light respectively pass overlap each other on the at least one optical element, the method comprising:
- a detection step of detecting reflected light from the eye to be examined, which has undergone aberration correction by the aberration correction unit;
- and
- a generation step of generating a fundus image of the eye to be examined based on a detection result of the detection step.
An image generation method using an adaptive optical system, the adaptive optical system comprising (a) a wavefront sensor which receives reflected light of light irradiated from a light source to an object to be detected and detects a wavefront of the object, (b) a wavefront correction unit placed at a position optically conjugate to the wavefront sensor and adapted to correct wavefront aberration obtained based on a detection result on the wavefront detected by the wavefront sensor, and (c) a common optical system which causes light from a first intermediate image irradiated from the light source and condensed to propagate through a first optical path, causes the propagating light to strike the wavefront correction unit, causes light reflected by the wavefront correction unit to propagate through a second optical path different from the first optical path, and condenses the light as a second intermediate image different from the first intermediate image, wherein the common optical system includes at least one optical element, and wherein the wavefront correction unit is placed at a position of an incident pupil of the common optical system, and the first intermediate and the second intermediate image are condensed on an image plane of the common optical system having the incident pupil, the method comprising:
- a detection step of detecting reflected light from the object to be detected, which has undergone aberration correction by the adaptive optical system;
- and
- a generation step of generating an image of the object to be detected based on a detection result of the detection step.
Dependencies are inferred from the claim text.