Patents by Inventor Megumi Tsuchiya

Megumi Tsuchiya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20230036046
    Abstract: An ophthalmic apparatus includes a tester having a target projecting optical system and a target photographing optical system. with a configuration on an examinee's eye side being non-telecentric, an alignment adjuster that adjusts at least a positional relationship between an examinee's eye and the tester in the direction of a working distance between the examinee's eye and the tester, and a corrector that acquires an actual error from a proper working distance based on association information indicating the association of position information on the positions of first and second target images on an observation image with an error in the working distance with respect to the proper working distance due to the corneal curvature radius of the examinee's eye and the non-telecentricity of the target photographing optical system and the position information on the tester at the current position thereof in the working distance direction, correcting the actual error.
    Type: Application
    Filed: July 18, 2022
    Publication date: February 2, 2023
    Applicant: NIDEK CO., LTD.
    Inventors: Megumi TSUCHIYA, Kenji NAKAMURA
  • Patent number: 11510568
    Abstract: A fundus imaging apparatus includes an imaging optical system that irradiates a fundus of a subject eye with light through an objective lens system, and enables to capture a fundus image of the subject eye based on return light from the subject eye, and a diopter correction unit that includes an optical element disposed on an optical path of the imaging optical system and a drive unit driving the optical element, and performs a diopter correction with a diopter value corresponding to a drive amount of the optical element. A drive range of the optical element in the diopter correction unit is set to avoid a specific range being a range in which an artifact caused by reflection light in the objective lens system is maximized.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: November 29, 2022
    Assignee: NIDEK CO., LTD.
    Inventors: Shinya Iwata, Megumi Tsuchiya, Yukihiro Higuchi
  • Publication number: 20200288974
    Abstract: A fundus imaging apparatus includes an imaging optical system that irradiates a fundus of a subject eye with light through an objective lens system, and enables to capture a fundus image of the subject eye based on return light from the subject eye, and a diopter correction unit that includes an optical element disposed on an optical path of the imaging optical system and a drive unit driving the optical element, and performs a diopter correction with a diopter value corresponding to a drive amount of the optical element. A drive range of the optical element in the diopter correction unit is set to avoid a specific range being a range in which an artifact caused by reflection light in the objective lens system is maximized.
    Type: Application
    Filed: February 3, 2020
    Publication date: September 17, 2020
    Applicant: NIDEK CO., LTD.
    Inventors: Shinya Iwata, Megumi Tsuchiya, Yukihiro Higuchi