Fundus photographing apparatus
AssigneeNidek Co., Ltd.
InventorsHideo Mukai, Yoshihiko Yamada, Masaaki Hanebuchi
Life of this patent
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Abstract
A fundus photographing apparatus includes a wavefront detecting optical system having a wavefront sensor for receiving reflection light from a fundus and measuring wavefront aberration of an eye, a wavefront compensating device for compensating the wavefront aberration, and a deviation detecting part for detecting deviation information corresponding to deviation between an effective region in which aberration compensation by the wavefront compensating device is effective, and a wavefront measuring region in which the wavefront aberration is measured by the wavefront detecting optical system, with respect to a direction perpendicular to an optical axial direction.
Claims20
A fundus photographing apparatus, comprising:
- a photographing optical system including:
- a first light source,
- an optical system for irradiating a fundus with light from the light source, and
- an optical system for receiving first reflection light from the fundus and photographing a fundus image;
- a wavefront detecting optical system including:
- a second light source for irradiating the fundus, and
- a wavefront sensor for receiving second reflection light from the fundus and measuring wavefront aberration of an eye;
- a wavefront compensating device disposed on an optical path of the photographing optical system for compensating the wavefront aberration by controlling a wavefront of incident light;
- and
- a deviation detecting part for detecting deviation information corresponding to deviation between an effective region and a wavefront measuring region with respect to a direction perpendicular to an optical axial direction, wherein aberration compensation by the wavefront compensating device is effective in the effective region and the wavefront aberration is measurable by the wavefront detecting optical system in the wavefront measuring region.
A fundus photographing apparatus, comprising:
- a photographing optical system including
- a plurality of light sources,
- an optical system for irradiating a fundus with lights from the light sources, and
- an optical system for receiving first reflection light from the fundus and photographing a fundus image;
- a wavefront detecting optical system having a wavefront sensor for receiving second reflection light from the fundus and measuring wavefront aberration of an eye;
- a wavefront compensating device disposed on an optical path of the photographing optical system for compensating the wavefront aberration by controlling a wavefront of incident light;
- and
- a deviation detecting part for detecting deviation information corresponding to deviation between an effective region and a wavefront measuring region with respect to a direction perpendicular to an optical axial direction, wherein aberration compensation by the wavefront compensating device is effective in the effective region and the wavefront aberration is measurable by the wavefront detecting optical system in the wavefront measuring region.
A fundus photographing apparatus, comprising:
- a photographing optical system including:
- a first light source,
- an optical system for irradiating a fundus with light from the light source, and
- an optical system for receiving first reflection light from the fundus and photographing a fundus image;
- a wavefront detecting optical system including:
- a second light source for irradiating the fundus, and
- a wavefront sensor for receiving second reflection light from the fundus and measuring wavefront aberration of an eye;
- a wavefront compensating device disposed on an optical path of the photographing optical system for compensating the wavefront aberration by controlling a wavefront of incident light;
- and
- a control unit for performing feedback control by repeating detection of wavefront aberration of an examinee's eye based on a detection signal from the wavefront sensor and control of the wavefront compensating device based on the detection result, the control unit for resuming feedback control after controlling the wavefront compensating device using wavefront control information stored on a memory in advance.
Dependencies are inferred from the claim text.