Patents by Inventor Sayaka NISHIMURA

Sayaka NISHIMURA 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).

  • Objective optical system
    Patent number: 10842360
    Abstract: An objective optical system consists of, in order from an object side, a front group, an intermediate group, and a rear group, wherein focusing is carried out from a far-point observation state to a near-point observation state by varying a focal length by moving the intermediate group along an optical axis, and the front group includes a first negative lens, and the first negative lens has a meniscus shape having an aspheric surface, and in any of the far-point observation state and the near-point observation state, the objective optical system satisfies the following conditional expressions (1) and (2) |(½)×?f×?t×((1/?f)?1)|?0.055??(1) 0.12?Sa/FL?0.44??(2).
    Type: Grant
    Filed: September 7, 2018
    Date of Patent: November 24, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Sayaka Nishimura
  • Stereoscopic endoscope system
    Patent number: 10827912
    Abstract: A stereoscopic endoscope system includes: a first objective optical system, a second objective optical system, an image sensor which has a first image pickup range corresponding to a range of a field of view of the first objective optical system and a second image pickup range corresponding to a range of a field of view of the second objective optical system; and a monitor, wherein the stereoscopic endoscope system satisfies the condition (1) and condition (2).
    Type: Grant
    Filed: November 27, 2019
    Date of Patent: November 10, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Sayaka Nishimura
  • STEREOSCOPIC ENDOSCOPE SYSTEM
    Publication number: 20200093356
    Abstract: A stereoscopic endoscope system includes: a first objective optical system, a second objective optical system, an image sensor which has a first image pickup range corresponding to a range of a field of view of the first objective optical system and a second image pickup range corresponding to a range of a field of view of the second objective optical system; and a monitor, wherein the stereoscopic endoscope system satisfies the condition (1) and condition (2).
    Type: Application
    Filed: November 27, 2019
    Publication date: March 26, 2020
    Applicant: OLYMPUS CORPORATION
    Inventor: Sayaka NISHIMURA
  • OBJECTIVE OPTICAL SYSTEM
    Publication number: 20190014976
    Abstract: An objective optical system consists of, in order from an object side, a front group, an intermediate group, and a rear group, wherein focusing is carried out from a far-point observation state to a near-point observation state by varying a focal length by moving the intermediate group along an optical axis, and the front group includes a first negative lens, and the first negative lens has a meniscus shape having an aspheric surface, and in any of the far-point observation state and the near-point observation state, the objective optical system satisfies the following conditional expressions (1) and (2) |(½)×?f×?t×((1/?f)?1)|?0.055??(1) 0.12?Sa/FL?0.
    Type: Application
    Filed: September 7, 2018
    Publication date: January 17, 2019
    Applicant: OLYMPUS CORPORATION
    Inventor: Sayaka NISHIMURA