公开(公告)号：US12274504B2

公开(公告)日：2025-04-15

申请号：US17043317

申请日：2019-03-26

Applicant: NIDEK CO., LTD.

Inventor： Tetsuyuki Miwa ,  Kazunari Shimizu ,  Shirohisa Kobayashi ,  Tsutomu Uemura ,  Kenji Nakamura

IPC: A61B3/16 ,  A61B5/00

Abstract: A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes a Langevin transducer. The Langevin transducer applies ultrasound to the examinee's eye to measure the eye pressure of the examinee's eye. Further, A non-contact ultrasonic tonometer for measuring the eye pressure of an examinee's eye by use of ultrasound includes: ultrasonic generating means for generating ultrasound; a support base supporting the ultrasonic generating means; and attaching means for attaching the ultrasonic generating means to the support base.

公开(公告)号：US11191431B2

公开(公告)日：2021-12-07

申请号：US16176808

申请日：2018-10-31

Applicant: NIDEK CO., LTD.

Inventor： Kazunari Shimizu ,  Kenji Nakamura ,  Toru Arikawa

IPC: A61B3/15 ,  A61B3/16 ,  A61B3/103 ,  A61B3/00 ,  A61B3/10 ,  A61B3/12

Abstract: An ophthalmic apparatus to examine an examinee's eye includes: a first optometry unit to perform a first examination of the examinee's eye; a second optometry unit to perform a second examination of the examinee's eye; a drive unit to cause relative movement of the first and second optometry units in three-dimensional manner relative to the examinee's eye; a controller to control the drive unit; a selection receiving unit to receive a selection signal representing at least one selected from the first second examinations; and a face photographing unit to photograph a face image including at least one of examinee's right and left eyes. The controller switches, according to the selection signal, between a first path for alignment of the first optometry unit with the eye detected from the face image and a second path for alignment of the second optometry unit with the eye detected from the face image.

公开(公告)号：US20240032786A1

公开(公告)日：2024-02-01

申请号：US18361273

申请日：2023-07-28

Applicant: NIDEK CO., LTD.

Inventor： Kenji Aoki ,  Koji Hamaguchi ,  Kenji Nakamura ,  Hiroyuki Umano ,  Yuuto Yoshimura

IPC: A61B3/00

CPC classification number: A61B3/0075

Abstract: A controller of an ophthalmic apparatus finely drives and roughly drives a drive unit of an optometry unit. In a case where a tilt operation of tilting the operation stick within a predetermined range is detected by an operation detection unit, the controller finely drives the drive unit by controlling the drive unit in response to the detected tilt operation, and finely changes a position of the optometry unit. In a case where at least one of a tilt operation of tilting the operation stick over a predetermined range and an operation of a rough movement operation unit is detected by the operation detection unit, the controller roughly drives the drive unit by controlling the drive unit in response to the detected operation, and roughly changes the position of the optometry unit.

公开(公告)号：US09462940B2

公开(公告)日：2016-10-11

申请号：US14170013

申请日：2014-01-31

Applicant: NIDEK CO., LTD.

Inventor： Kenji Nakamura

IPC: A61B3/032 ,  A61B3/103 ,  A61B3/00

CPC classification number: A61B3/032 ,  A61B3/0008 ,  A61B3/103

Abstract: An optometric apparatus includes an optotype presenting optical system for presenting part of a plurality of optotypes corresponding to visual acuity to be measured to an examinee's eye and a visible light source for irradiating illumination light to the optotypes presented to the eye through the optotype presenting optical system. A controller is configured to execute processing of changing a light amount of the illumination light to be irradiated to the optotypes from the visible light source between a predetermined first light amount and a second light amount lower than the first light amount and processing of switching the optotypes to be presented to the eye at the time of changing the light amount of the illumination light from the first light amount to the second light amount.

Abstract translation: 验光装置包括视标呈现光学系统，用于将对应于要测量的视敏度的多个视标的一部分呈现给受检者的眼睛，以及可见光源，用于将照明光照射到通过视标呈现光学系统呈现给眼睛的视标 。 控制器被配置为执行在预定的第一光量和比第一光量低的第二光量之间改变要从可见光源照射到视标的照明光的光量的处理，以及切换视标的处理 在将照明光的光量从第一光量改变为第二光量时被呈现给眼睛。

公开(公告)号：US09723983B2

公开(公告)日：2017-08-08

申请号：US14714988

申请日：2015-05-18

Applicant: NIDEK CO., LTD.

Inventor： Kazunari Shimizu ,  Kenji Nakamura ,  Yusuke Sakashita

IPC: A61B3/14 ,  A61B3/00 ,  A61B3/10 ,  A61B3/02 ,  A61B3/15

CPC classification number: A61B3/14 ,  A61B3/1005 ,  A61B3/145 ,  A61B3/152

Abstract: A corneal endothelial cell photographing apparatus for photographing endothelial cells of a patient eye's cornea, includes: a cornea photographing optical system including an imaging device and configured to project light toward the cornea and photograph the corneal endothelial cells through the imaging device; a light projecting optical system to project detection light in a first oblique direction to the cornea to detect a focus state of the cornea photographing optical system relative to the cornea; a detecting optical system including a detector with arranged pixels and configured to receive, in a second oblique direction opposite to the first oblique direction, corneal reflection light resulting from the detection light and including reflection light from the corneal endothelium through the detector, and detect an intensity distribution of the corneal reflection light in a depth direction; and a controller to cause a monitor to display the intensity distribution output from the detector.