Eye refractive power measurement apparatus
AssigneeNidek Co., Ltd.
InventorToshiya Hino
Life of this patent
Estimating the term…
Abstract
An eye refractive power measurement apparatus for measuring refractive power of an eye to be examined, comprises a measurement unit including a projecting optical system for projecting measurement light onto a fundus of the eye and a detecting optical system for receiving the reflected light of the measurement light reflected from the fundus, an arithmetic unit for obtaining the refractive power based on an output signal from the photodetector, a moving unit for moving the measurement unit relative to the eye, and a control unit for detecting an interfering part that interferes with the reflected light passing through the eye based on the output signal from the photodetector and for driving and controlling the moving unit based on the detected results.
Claims16
An eye refractive power measurement apparatus for measuring refractive power of an eye to be examined, comprising:
- a measurement unit including
- a projecting optical system which is provided with a light source for projecting measurement light onto a fundus of the eye, and
- a detecting optical system which is provided with at least one photodetector for receiving the reflected light of the measurement light reflected from the fundus;
- an arithmetic unit, which is connected to the photodetector, for obtaining the refractive power based on an output signal from the photodetector;
- a moving unit for moving the measurement unit relative to the eye;
- and
- a control unit, which is connected to the photodetector and to the moving unit, for detecting an interfering part that interferes with at least one of the measurement light and the reflected light based on the output signal from the photodetector, and for driving and controlling the moving unit based on the detected results.
An eye refractive power measurement apparatus for measuring refractive power of an eye to be examined, comprising:
- measurement means for projecting measurement light onto a fundus of the eye, and thereby receiving the reflected light of the measurement light reflected from the fundus with a photodetector;
- arithmetic means for obtaining the refractive power based on an output signal from the photodetector;
- moving means for moving the measurement means relative to the eye;
- detecting means for detecting an interfering part that interferes with at least one of the measurement light and the reflected light based on the output signal from the photodetector;
- and
- control means for driving and controlling the moving means based on the detected results obtained by the detecting means.
Dependencies are inferred from the claim text.