公开(公告)号：US20200077888A1

公开(公告)日：2020-03-12

申请号：US16686245

申请日：2019-11-18

Applicant: TOPCON CORPORATION

Inventor： Takefumi HAYASHI ,  Kouta FUJII

IPC: A61B3/10 ,  A61B3/107 ,  A61B3/103 ,  A61B3/00 ,  A61B3/12

Abstract: An ophthalmological device according to the embodiments comprises an objective lens, a subjective inspection optical system, and an interference optical system. The subjective inspection optical system includes an optical element capable of correcting aberration of a subject's eye and projects a visual target onto the subject's eye via the objective lens and the optical element. The interference optical system splits light from a light source into reference light and measurement light, projects the measurement light onto the subject's eye via the objective lens and the optical element, generates interference light between returning light of the measurement light and the reference light, and detects the generated interference light.

公开(公告)号：US20190090735A1

公开(公告)日：2019-03-28

申请号：US16139195

申请日：2018-09-24

Applicant: TOPCON CORPORATION

Inventor： Kouta FUJII ,  Makoto SAIKA ,  Jun SAKAI

IPC: A61B3/10 ,  A61B3/12

Abstract: An ophthalmic apparatus of an exemplary embodiment is capable of applying OCT to the fundus of a subject's eye, and includes an optical system, an optical scanner, an optical path length changing device, and a controller. The optical system splits light output front a light source into measurement light and reference light, projects the measurement light onto the fundus, generates interference light by superposing returning light of the measurement light from the subject's eye on the reference light, and detects the interference light. The optical scanner deflects the measurement light for scanning the fundus. The optical path length changing device changes at least one of an optical path length of the measurement light and an optical path length of the reference light. The controller controls the optical scanner based on at least the optical path length.

公开(公告)号：US20190082957A1

公开(公告)日：2019-03-21

申请号：US16132507

申请日：2018-09-17

Applicant: TOPCON CORPORATION

Inventor： Kouta FUJII ,  Makoto SAIKA ,  Jun SAKAI

IPC: A61B3/12 ,  A61B3/10 ,  A61B3/00

Abstract: An ophthalmic apparatus of an embodiment include a data acquisition device, distribution data generator, correction value calculator, magnification corrector, and data comparator. The data acquisition device acquires three dimensional data by applying OCT to the fundus of a subject's eye. The distribution data generator generates distribution data of a predetermined measurement value in the fundus based on the three dimensional data. The correction value calculator calculates a magnification correction value based on a predetermined condition for acquiring the three dimensional data. The magnification corrector changes at least one of the size of standard distribution data generated in advance for the predetermined measurement value and the size of the distribution data, based on the magnification correction value. The data comparator compares the distribution data with the standard distribution data, at least one of whose sizes has been changed by the magnification corrector.

公开(公告)号：US20190008380A1

公开(公告)日：2019-01-10

申请号：US16066157

申请日：2017-01-13

Applicant: TOPCON CORPORATION

Inventor： Takefumi HAYASHI ,  Kouta FUJII

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

Abstract: An ophthalmological device according to the embodiments comprises an objective lens, an objective measurement optical system, an interference optical system, and an image forming unit. The objective measurement optical system irradiates light onto a subject's eye via the objective lens and detects returning light from the subject's eye. The interference optical system splits light from a light source into reference light and measurement light, projects the measurement light onto the subject's eye via the objective lens so as to overlap at least part of an area of the irradiated light at the subject's eye by the objective measurement optical system, generates interference light between returning light of the measurement light and the reference light, and detects the generated interference light. The image forming unit forms a tomographic image of the subject's eye based on a detection result of the interference light by the interference optical system.

公开(公告)号：US20190008378A1

公开(公告)日：2019-01-10

申请号：US16066256

申请日：2017-01-13

Applicant: TOPCON CORPORATION

Inventor： Takefumi HAYASHI ,  Kouta FUJII

IPC: A61B3/10 ,  A61B3/103 ,  A61B3/107

Abstract: An ophthalmological device according to the embodiments comprises an objective lens, a subjective inspection optical system, and an interference optical system. The subjective inspection optical system includes an optical element capable of correcting aberration of a subject's eye and projects a visual target onto the subject's eye via the objective lens and the optical element. The interference optical system splits light from a light source into reference light and measurement light, projects the measurement light onto the subject's eye via the objective lens and the optical element, generates interference light between returning light of the measurement light and the reference light, and detects the generated interference light.