公开(公告)号：US20220248950A1

公开(公告)日：2022-08-11

申请号：US17596330

申请日：2020-06-10

Applicant: Topcon Corporation

Inventor： Zhenguo WANG ,  Zaixing MAO ,  Jongsik KIM ,  Bin CAO ,  Makoto FUJINO ,  Kazuhiro OOMORI ,  Eiichi YANAGI ,  Ying DONG ,  Song MEI ,  Kinpui CHAN

IPC: A61B3/10 ,  A61B3/14 ,  A61B3/00

Abstract: An ophthalmologic apparatus includes: an objective lens 18 configured to face a subject's eye E; an illumination optical system 1c configured to irradiate the subject's eye E with illumination light L1; a measurement optical system 1 b configured to take an interference image of corneal reflection light R1, which is a reflection of the illumination light L1, through the objective lens 18; an observation optical system 1a configured to image an anterior segment of the subject's eye E through the objective lens 18; a control unit 2 configured to process information on imaging by the measurement optical system 1b and the observation optical system 1 a; and the control unit 2 configured to simultaneously output, to a single output unit 3, tear film information calculated from the interference image by the measurement optical system 1 b, and information on the anterior segment E imaged by the observation optical system 1a.

公开(公告)号：US20220313084A1

公开(公告)日：2022-10-06

申请号：US17642236

申请日：2020-09-10

Applicant: Topcon Corporation

Inventor： Jongsik KIM ,  Dawei LI ,  Toshihiro MINO ,  Zhenguo WANG ,  Kinpui CHAN

IPC: A61B3/14 ,  A61B3/12 ,  A61B3/00

Abstract: An ophthalmological imaging device includes illumination optics having an illumination light source that outputs an illumination light, a scanner that redirects the illumination light toward a portion of an object to be imaged, and an optical image capture device including a camera that receives backscattered light that is scattered from the illumination light by the object and captures first and second images of the backscattered light. The device also includes a control processor that controls the scanner and the optical image capture device to cause the optical image capture device to capture the first and second images of the object. The first and second images are captured by the camera at different times and extracted from different portions of the backscattered light. The device also includes an image processor that generates a stereoscopic image from the first and second images of the object.

公开(公告)号：US20220192488A1

公开(公告)日：2022-06-23

申请号：US17692231

申请日：2022-03-11

Applicant: Topcon Corporation

Inventor： Toshihiro MINO ,  Jongsik KIM ,  Dawei LI ,  Zhenguo WANG ,  Kinpui CHAN

IPC: A61B3/117 ,  A61B3/14 ,  H04N5/235

Abstract: An ophthalmic apparatus includes an illumination optical system, an imaging optical system, and a controller. The illumination optical system is configured to generate illumination light using light from a light source, and to illuminate a changeable illumination region on a predetermined site of a subject's eye with the illumination light having a light intensity corresponding to a size of the illumination region. The imaging optical system is configured to guide returning light of the illumination light from the subject's eye to a light receiving surface of an image sensor. The controller is configured to control the image sensor to set an opening range so as to overlap an illumination range of the returning light on the light receiving surface corresponding to the illumination region and to capture a light receiving result obtained by a light receiving element in the set opening range.

公开(公告)号：US20230306568A1

公开(公告)日：2023-09-28

申请号：US18012667

申请日：2021-06-22

Applicant: Osaka University ,  Topcon Corporation

Inventor： Kohji NISHIDA ,  Kazuichi MARUYAMA ,  Atsuya MIKI ,  Ryo KAWASAKI ,  Hirokazu SAKAGUCHI ,  Chikako HARA ,  Song MEI ,  Yasufumi FUKUMA ,  Zaixing MAO ,  Zhenguo WANG ,  Kinpui CHAN

IPC: G06T5/50 ,  G06T7/11 ,  G06T7/00 ,  G06T7/60 ,  G06T7/30 ,  A61B3/10 ,  A61B3/12

CPC classification number: G06T5/50 ,  A61B3/102 ,  A61B3/1225 ,  G06T7/0014 ,  G06T7/11 ,  G06T7/30 ,  G06T7/60 ,  G06T2200/04 ,  G06T2207/10101 ,  G06T2207/20036 ,  G06T2207/20212 ,  G06T2207/30041 ,  G06T2207/30096 ,  G06T2207/30101 ,  G06T2207/30242

Abstract: A medical diagnostic apparatus includes a receiver circuit that receives three-dimensional volumetric data of a subject’s eye, and a processor configured to separate portions of the three-dimensional volumetric data into separate segments, perform processing differently on each of the separate segments, and combine the separately processed segments to produce an enhanced three-dimensional volumetric data set. The processor is further configured to generate at least one diagnostic metric from the enhanced three-dimensional volumetric data set, and the processor is further configured to evaluate a pathological condition based on the at least one diagnostic metric. Related methods and computer readable media are also disclosed.

公开(公告)号：US20230148860A1

公开(公告)日：2023-05-18

申请号：US17973569

申请日：2022-10-26

Applicant: Topcon Corporation

Inventor： Toshihiro MINO ,  Yahui WANG ,  Zhenguo WANG ,  Kinpui CHAN

IPC: A61B3/10 ,  A61B3/12 ,  A61B3/00

CPC classification number: A61B3/102 ,  A61B3/1233 ,  A61B3/0025

Abstract: A scanning apparatus includes a scanner configured to move a scanning spot along a movement path to capture three-dimensional information of a target object. The movement path includes a plurality of b-scan paths performed along a c-scan path. The scanning apparatus also includes a processing circuit configured as a controller to control the movement path of the scanning spot. An area of the target object covered by the movement path may be independent of a length of the b-scan path. The processing circuit may be configured as an analyzer configured to determine a saturation time for each three-dimensional position within a portion of the target object based on an inter-scan time.