Ophthalmic apparatus
AssigneeKowa Company, Ltd.
InventorsAtsushi Kakuuchi, Shigeru Takimoto, Tadashi Ichihashi
Life of this patent
Estimating the term…
Abstract
An ophthalmic apparatus has an illumination optical system for illuminating a preselected point of a patient's eye with slit-light. Objective lenses are each disposed in an observation optical path for forming an image of the preselected point of the patient's eye. Eyepiece systems are disposed in respective ones of the observation optical paths for observing the image of the preselected point of the patient's eye. An imaging device captures the image of the preselected point of the patient's eye. An optical element guides the image of the preselected point of the patient's eye to the imaging device. The optical element is disposed between the objective lenses at a position that does not lie in any of the observation optical paths.
Claims22
An ophthalmic apparatus comprising:
- an illumination optical system for illuminating a specified point of a patient's eye with slit-light;
- an observation optical system having objective lenses for forming an image of the specified point of the patient's eye, and left and right eyepiece systems through which an examiner observes the image of the specified point of the patient's eye with left and right eyes, respectively;
- an optical element disposed in a space that lies between the objective lenses of the observation optical system and the specified point of the patient's eye and between an effective diametric center of the left eyepiece system and an effective diametric center of the right eyepiece system;
- and
- an imaging device for capturing the image of the specified point of the patient's eye via the optical element.
An ophthalmic apparatus comprising:
- a light source for producing slit-light;
- an illumination system for illuminating a preselected point of a patient's eye with the slit-light produced by the light source;
- a pair of objective lenses each disposed in an observation optical path for forming an image of the preselected point of the patient's eye illuminated with the slit-light;
- a pair of eyepiece systems disposed in respective ones of the observation optical paths for observing the image of the preselected point of the patient's eye formed by the objective lenses;
- an imaging device for capturing the image of the preselected point of the patient's eye formed by the objective lenses;
- and
- an optical element for directing the image of the preselected point of the patient's eye formed by the objective lenses to the imaging device, the optical element being disposed between the objective lenses and the preselected point of the patient's eye at a position that does not lie in any of the observation optical paths.
An ophthalmic apparatus comprising:
- a light source for producing slit-light;
- an illumination system for illuminating a preselected point of a patient's eye with the slit-light produced by the light source;
- a pair of objective lenses each disposed in an observation optical path for forming an image of the preselected point of the patient's eye illuminated with the slit-light;
- a pair of eyepiece systems each disposed in respective ones of the observation optical paths for observing the image of the preselected point of the patient's eye formed by the objective lenses;
- an imaging device for capturing the image of the preselected point of the patient's eye formed by the objective lenses;
- and
- optical means for guiding the image of the preselected point of the patient's eye formed by the objective lenses to the imaging device, the optical means being positioned relative to the eyepiece systems so that no differences exist between the image of the preselected point of the patient's eye observed via the eyepiece systems and the image of the preselected point of the patient's eye captured by the imaging device.
Dependencies are inferred from the claim text.