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公开(公告)号：EP4483782A2
公开(公告)日：2025-01-01
申请号：EP24208600.7
申请日：2021-03-31
Applicant: Topcon Corporation
Inventor： SUZUKI, Masaya , YAMADA, Kazuhiro , SHIMIZU, Hitoshi , NAKAJIMA, Masashi
IPC: A61B3/14
Abstract: An ophthalmic apparatus includes an illumination optical system including a slit in which a slit-shaped aperture is formed and an iris aperture in which two apertures are formed at positions away from an optical axis position, the iris aperture being arranged at a position substantially conjugate optically to an iris of a subject's eye between a light source and the slit, and configured to generate slit-shaped illumination light using light from the light source and to guide the illumination light to a fundus of the subject's eye; and an imaging optical system including an imaging aperture in which an aperture is formed, and configured to guide returning light of the illumination light to an image sensor, the returning light being guided from the fundus by pupil division and passing through the aperture formed in the imaging aperture. A width of the slit-shaped aperture, a distance between the two apertures, and a size of the aperture in the imaging aperture are set so that an overlap region of a light flux region of the illumination light and a light flux region of the returning light is located on a side of the fundus from a posterior surface of lens of the subject's eye within the eye of the subject eye.
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Patent Agency Ranking
公开(公告)号：EP3461399A1
公开(公告)日：2019-04-03
申请号：EP18197078.1
申请日：2018-09-27
Applicant: Topcon Corporation
Inventor： NAKAJIMA, Masashi
Abstract: To provide an ophthalmologic device and a pupil state measuring method capable of securing accuracy of a measurement result of objective measurement and effective for investigating the cause of an error during objective measurement. A pupil state measuring method according to the present invention includes: an ocular characteristic measuring step of objectively measuring an ocular characteristic of a subject eye of a subject; an imaging step of substantially simultaneously imaging an anterior ocular segment of the subject eye from different directions using at least two imaging units (108A, 108B) in measuring the ocular characteristic; a measuring step of analyzing at least one image of images taken by the at least two imaging units to measure a pupil state of the subject eye; and a step of performing the imaging step and the measuring step in measuring the ocular characteristic.
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公开(公告)号：EP4413916A3
公开(公告)日：2024-11-06
申请号：EP24182193.3
申请日：2020-07-10
Applicant: TOPCON CORPORATION
Inventor： SUZUKI, Masaya , NAKAJIMA, Masashi , SHIMIZU, Hitoshi
Abstract: In a method of controlling an ophthalmic apparatus, the ophthalmic apparatus comprises:
a light source; an illumination optical system including a slit with a slit-shaped aperture capable of being arranged at a position substantially conjugate optically to a fundus of a subject's eye, and configured to generate slit-shaped illumination light using light from the light source; a first movement mechanism configured to move the slit in an optical axis direction of the illumination optical system; an optical scanner configured to deflect the illumination light to guide the illumination light to the fundus; an imaging optical system configured to guide returning light of the illumination light from the fundus to an image sensor; and a controller configured to control the image sensor using a rolling shutter method so as to acquire light receiving result of the returning light corresponding to an irradiated position of the illumination light on the fundus. The method comprises an acquisition step of acquiring a dioptric power of the subject's eye, and a first control step of controlling the first movement mechanism based on the dioptric power acquired in the acquisition step.-
公开(公告)号：EP4413916A2
公开(公告)日：2024-08-14
申请号：EP24182193.3
申请日：2020-07-10
Applicant: TOPCON CORPORATION
Inventor： SUZUKI, Masaya , NAKAJIMA, Masashi , SHIMIZU, Hitoshi
IPC: A61B3/14
Abstract: In a method of controlling an ophthalmic apparatus, the ophthalmic apparatus comprises:
a light source; an illumination optical system including a slit with a slit-shaped aperture capable of being arranged at a position substantially conjugate optically to a fundus of a subject's eye, and configured to generate slit-shaped illumination light using light from the light source; a first movement mechanism configured to move the slit in an optical axis direction of the illumination optical system; an optical scanner configured to deflect the illumination light to guide the illumination light to the fundus; an imaging optical system configured to guide returning light of the illumination light from the fundus to an image sensor; and a controller configured to control the image sensor using a rolling shutter method so as to acquire light receiving result of the returning light corresponding to an irradiated position of the illumination light on the fundus. The method comprises an acquisition step of acquiring a dioptric power of the subject's eye, and a first control step of controlling the first movement mechanism based on the dioptric power acquired in the acquisition step.-
公开(公告)号：EP4483782A3
公开(公告)日：2025-04-09
申请号：EP24208600.7
申请日：2021-03-31
Applicant: Topcon Corporation
Inventor： SUZUKI, Masaya , YAMADA, Kazuhiro , SHIMIZU, Hitoshi , NAKAJIMA, Masashi
Abstract: An ophthalmic apparatus includes an illumination optical system including a slit in which a slit-shaped aperture is formed and an iris aperture in which two apertures are formed at positions away from an optical axis position, the iris aperture being arranged at a position substantially conjugate optically to an iris of a subject's eye between a light source and the slit, and configured to generate slit-shaped illumination light using light from the light source and to guide the illumination light to a fundus of the subject's eye; and an imaging optical system including an imaging aperture in which an aperture is formed, and configured to guide returning light of the illumination light to an image sensor, the returning light being guided from the fundus by pupil division and passing through the aperture formed in the imaging aperture. A width of the slit-shaped aperture, a distance between the two apertures, and a size of the aperture in the imaging aperture are set so that an overlap region of a light flux region of the illumination light and a light flux region of the returning light is located on a side of the fundus from a posterior surface of lens of the subject's eye within the eye of the subject eye.
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公开(公告)号：EP4133993A1
公开(公告)日：2023-02-15
申请号：EP21783915.8
申请日：2021-03-31
Applicant: TOPCON CORPORATION
Inventor： SUZUKI, Masaya , YAMADA, Kazuhiro , SHIMIZU, Hitoshi , NAKAJIMA, Masashi
IPC: A61B3/10
Abstract: An ophthalmic apparatus includes an illumination optical system including a slit in which a slit-shaped aperture is formed and an iris aperture in which two apertures are formed at positions away from an optical axis position, the iris aperture being arranged at a position substantially conjugate optically to an iris of a subject's eye between a light source and the slit, and configured to generate slit-shaped illumination light using light from the light source and to guide the illumination light to a fundus of the subject's eye; and an imaging optical system including an imaging aperture in which an aperture is formed, and configured to guide returning light of the illumination light to an image sensor, the returning light being guided from the fundus by pupil division and passing through the aperture formed in the imaging aperture. A width of the slit-shaped aperture, a distance between the two apertures, and a size of the aperture in the imaging aperture are set so that an overlap region of a light flux region of the illumination light and a light flux region of the returning light is located on a side of the fundus from a posterior surface of lens of the subject's eye within the eye of the subject eye.
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