Ophthalmologic apparatus and method for controlling the same
First Claim
Patent Images
1. An ophthalmologic apparatus comprising:
- a photographing optical system configured to photograph a fundus of a subject'"'"'s eye via a focusing lens;
a projection unit configured to project a plurality of focusing indices corresponding to an opening of a mask portion;
a detecting unit configured to detect if there is one or a plurality of focusing index images in a fundus image of the subject'"'"'s eye; and
a driving unit configured to drive the focusing lens along an optical pathusing information about positions of the plurality of focusing index images corresponding to the opening of the mask portion when the plurality of focusing index images is detected in the fundus image; and
to drive the focusing lens along the optical path using information about both a position of an image corresponding to the mask portion different from the opening of the mask portion and a position of a focusing index image corresponding to the opening of the mask portion when one focusing index image of the plurality of focusing index images is detected in the fundus image.
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Abstract
An ophthalmologic apparatus includes a photographing optical system configured to photograph a fundus of a subject'"'"'s eye via a focusing lens, a projection unit configured to project, via a mask portion including an opening, a focusing index corresponding to the opening, and a driving unit configured to drive the focusing lens along an optical path based on a position of an image corresponding to the mask portion and a position of a focusing index image corresponding to the opening in a fundus image of the subject'"'"'s eye.
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Citations
28 Claims
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1. An ophthalmologic apparatus comprising:
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a photographing optical system configured to photograph a fundus of a subject'"'"'s eye via a focusing lens; a projection unit configured to project a plurality of focusing indices corresponding to an opening of a mask portion; a detecting unit configured to detect if there is one or a plurality of focusing index images in a fundus image of the subject'"'"'s eye; and a driving unit configured to drive the focusing lens along an optical path using information about positions of the plurality of focusing index images corresponding to the opening of the mask portion when the plurality of focusing index images is detected in the fundus image; and to drive the focusing lens along the optical path using information about both a position of an image corresponding to the mask portion different from the opening of the mask portion and a position of a focusing index image corresponding to the opening of the mask portion when one focusing index image of the plurality of focusing index images is detected in the fundus image. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for controlling an ophthalmologic apparatus that includes a photographing optical system configured to photograph a fundus of a subject'"'"'s eye via a focusing lens and a projection unit configured to project a plurality of focusing indices corresponding to an opening of a mask portion, the method comprising:
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detecting if there is one or a plurality of focusing index images in a fundus image of the subject'"'"'s eye; driving the focusing lens along an optical path using information about positions of the plurality of focusing index images corresponding to the opening of the mask portion when the plurality of focusing index images is detected in the fundus image; and driving the focusing lens along an optical path using information about both a position of an image corresponding to the mask portion different from the opening of the mask portion and a position of a focusing index image corresponding to the opening of the mask portion when one focusing index image of the plurality of focusing index images is detected in the fundus image. - View Dependent Claims (12)
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13. An ophthalmologic apparatus comprising:
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a photographing optical system configured to photograph a fundus of a subject eye via a focusing lens; a projection unit configured to project a plurality of focusing indices corresponding to an opening of a mask portion; a detecting unit configured to detect if there is one or a plurality of focusing index images in a fundus image of the subject'"'"'s eye; and a driving unit configured to drive, when one focusing index image of the plurality of focusing index images is detected in the fundus image, the focusing lens along an optical path using information about both a position of an image corresponding to the mask portion different from the opening of the mask portion and a position of a focusing index image corresponding to the opening of the mask portion, wherein illuminance for illuminating the projection unit is higher when one focusing index image of the plurality of focusing index images is detected in the fundus image as compared to illuminance for illuminating the projection unit when the plurality of focusing index image is detected in the fundus image. - View Dependent Claims (14, 15)
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16. An ophthalmologic apparatus comprising:
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an illumination optical system configured to illuminate a fundus of a subject'"'"'s eye; a photographing optical system configured to photograph the fundus via a focusing lens using return light from the fundus illuminated by the illumination optical system; a projection unit configured to project a focusing index corresponding to an opening of a mask portion; and a driving unit configured to drive, using information about a relative positional relationship between an image corresponding to the mask portion different from the opening of the mask portion and a focusing index image corresponding to the opening of the mask portion, the focusing lens along an optical path of the photographing optical system and the projection unit along an optical path of the illumination optical system. - View Dependent Claims (17, 23, 25, 27)
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18. A method for controlling an ophthalmologic apparatus comprising an illumination optical system configured to illuminate a fundus of a subject'"'"'s eye, a photographing optical system configured to photograph the fundus via a focusing lens using return light from the fundus illuminated by the illumination optical system, and a projection unit configured to project a focusing index corresponding to an opening of a mask portion;
- the method comprising
driving, using information about a relative positional relationship between an image corresponding to the mask portion different from the opening of the mask portion and a focusing index image corresponding to the opening of the mask portion, the focusing lens along an optical path of the photographing optical system and the projection unit along an optical path of the illumination optical system. - View Dependent Claims (19, 21, 24, 26, 28)
- the method comprising
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20. A method for controlling an ophthalmologic apparatus that includes a photographing optical system configured to photograph a fundus of a subject'"'"'s eye via a focusing lens and a projection unit configured to project a plurality of focusing indices corresponding to an opening of a mask portion, the method comprising:
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detecting if there is one or a plurality of focusing index images in a fundus image of the subject'"'"'s eye; and driving, when one focusing index image of the plurality of focusing index images is detected in the fundus image, the focusing lens along an optical path using information about both a position of an image corresponding to the mask portion different from the opening of the mask portion and a position of a focusing index image corresponding to the opening of the mask portion, wherein illuminance for illuminating the projection unit is higher when one focusing index image of the plurality of focusing index images is detected in the fundus image as compared to illuminance for illuminating the projection unit when the plurality of focusing index images is detected in the fundus image. - View Dependent Claims (22)
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Specification