公开(公告)号：US20220409040A1

公开(公告)日：2022-12-29

申请号：US17901877

申请日：2022-09-02

Applicant: TOPCON CORPORATION

Inventor： Tatsuo YAMAGUCHI ,  Ryoichi HIROSE ,  Michiko NAKANISHI

IPC: A61B3/00 ,  A61B3/10 ,  A61B3/12

Abstract: An ophthalmologic apparatus includes an optical scanner, an interference optical system, an intraocular distance calculator, an image correcting unit, and a controller. The optical scanner is disposed at an optically substantially conjugate position with a first site of a subject's eye. The interference optical system is configured to split light from a light source into reference light and measurement light, to project the measurement light onto the subject's eye via the optical scanner, and to detect interference light between returning light of the light from the subject's eye and the reference light via the optical scanner. The image forming unit is configured to form a tomographic image of the subject's eye corresponding a first traveling direction of the measurement light deflected by the optical scanner, based on a detection result of the interference light. The intraocular distance calculator is configured to obtain an intraocular distance between predetermined sites of the subject's eye based on the detection result of the interference light. The image correcting unit is configured to correct the tomographic image based on the intraocular distance. The controller is configured to control at least the optical scanner.

公开(公告)号：US20250017463A1

公开(公告)日：2025-01-16

申请号：US18901208

申请日：2024-09-30

Applicant: TOPCON CORPORATION

Inventor： Michiko NAKANISHI ,  Shingo UENO ,  Hiroto TAJIMA

IPC: A61B3/12 ,  A61B3/10

Abstract: A fundus observation apparatus includes an optical system, two concave mirrors, and a holding member. The optical system is configured to project light from a light source onto a fundus of an eye to be examined, and to receive returning light from the fundus. The two concave mirrors have concave reflective surfaces, respectively, configured to guide the light from the optical system to the fundus, and to guide the returning light to the optical system. The holding member is configured to be capable of holding the two concave mirrors in a state where the concave mirrors are arranged on both sides of the holding member so that the concave mirrors are positioned in a default relative position in a predetermined one-dimensional direction or predetermined two-dimensional directions.

公开(公告)号：US20200288966A1

公开(公告)日：2020-09-17

申请号：US16885305

申请日：2020-05-28

Applicant: TOPCON CORPORATION

Inventor： Tatsuo YAMAGUCHI ,  Ryoichi HIROSE ,  Michiko NAKANISHI

IPC: A61B3/00 ,  A61B3/10 ,  A61B3/12

Abstract: An ophthalmologic apparatus includes an optical scanner, an interference optical system, an intraocular distance calculator, an image correcting unit, and a controller. The optical scanner is disposed at an optically substantially conjugate position with a first site of a subject's eye. The interference optical system is configured to split light from a light source into reference light and measurement light, to project the measurement light onto the subject's eye via the optical scanner, and to detect interference light between returning light of the light from the subject's eye and the reference light via the optical scanner. The image forming unit is configured to form a tomographic image of the subject's eye corresponding a first traveling direction of the measurement light deflected by the optical scanner, based on a detection result of the interference light. The intraocular distance calculator is configured to obtain an intraocular distance between predetermined sites of the subject's eye based on the detection result of the interference light. The image correcting unit is configured to correct the tomographic image based on the intraocular distance. The controller is configured to control at least the optical scanner.

公开(公告)号：US20190298168A1

公开(公告)日：2019-10-03

申请号：US16289679

申请日：2019-03-01

Applicant: TOPCON CORPORATION

Inventor： Yoko TATARA ,  Michiko NAKANISHI ,  Shunichi MORISHIMA

IPC: A61B3/103 ,  A61B3/14 ,  A61B3/10 ,  A61B3/12 ,  A61B3/00

Abstract: An ophthalmologic apparatus includes an objective lens, a refractive power measurement optical system, an inspection optical system, and a corneal shape measurement optical system. The refractive power measurement optical system projects light onto a subject's eye via the objective lens and detects returning light from the subject's eye. The inspection optical system includes an optical scanner. The inspection optical system deflects light from a light source, projects the light deflected by the optical scanner onto the subject's eye via the objective lens, and detects returning light from the subject's eye. The corneal shape measurement optical system projects an arc-like or circumferential measurement pattern from an outer edge side of the objective lens onto the subject's eye and detects returning light from a cornea of the subject's eye. When a working distance is WD, a distance from a corneal apex of the subject's eye to a pupil of the subject's eye is d1, a distance from the pupil to a fundus of the subject's eye is d2, and a scan range by the optical scanner is SA square, a diameter of the objective lens is greater than or equal to ((WD+d1)×SA/d2).