公开(公告)号：US20220386857A1

公开(公告)日：2022-12-08

申请号：US17884351

申请日：2022-08-09

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu IGARASHI

IPC: A61B1/00 ,  G02B23/24

Abstract: There is provided an objective optical system that is easy to produce, capable of forming optical images that can be observed without difficulties while small in size. The objective optical system includes, in order from the object side, a flat plate OP1, an aperture stop S, and a substantially hemispherical planoconvex lens L1 having an outer diameter substantially equal to the outer diameter of the flat plate. The flat plate and the planoconvex lens L1 are cemented together with the aperture stop between. The objective optical system satisfies the following conditional expressions (1), (2), and (3): 0.3

公开(公告)号：US20200333580A1

公开(公告)日：2020-10-22

申请号：US16920329

申请日：2020-07-02

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu IGARASHI

IPC: G02B23/24 ,  A61B1/05

Abstract: An image pickup optical system includes an image pickup field of view in which part of an endoscope is reflected, an aperture stop and a peripheral light reduction stop. The peripheral light reduction stop is positioned in an optical axis direction satisfying Conditional Expression (1), in the peripheral light reduction stop, when a side on which part of the endoscope exists in the image pickup field of view is a first direction and a side on which no part of the endoscope exists in the image pickup field of view is a second direction, an opening portion of the peripheral light reduction stop satisfies Conditional Expression (2), and a peripheral light reduction quantity in the second direction is smaller than a peripheral light reduction quantity in the first direction by shielding no effective luminous flux in the second direction or reducing shielding quantity of the effective luminous flux, 0.5

公开(公告)号：US20180227469A1

公开(公告)日：2018-08-09

申请号：US15457268

申请日：2017-03-13

Applicant: OLYMPUS CORPORATION

Inventor： Yoji OSANAI ,  Tsutomu IGARASHI ,  Taichiro KOUCHI ,  Osamu NONAKA

IPC: H04N5/225 ,  G02B27/64

CPC classification number: H04N5/2254 ,  B64C39/024 ,  B64C2201/127 ,  B64C2201/141 ,  B64D47/08 ,  G02B27/644 ,  H04N5/2252 ,  H04N5/232 ,  H04N7/185

Abstract: A photographing device attachable to a moving body includes: a first control section configured to predict and obtain a change in physical quantity based on an alteration in a photographing state; and a communication control section configured to transmit information related to the change in the physical quantity. The photographing device improves stability in the moving body and stability of photographing. Information related to influence on the moving body based on a change in an outer shape and a change in a position of the center of gravity of the photographing device mounted on the moving body is shared by the moving body to improve the stability in the moving body and the stability of photographing.

公开(公告)号：US20180078127A1

公开(公告)日：2018-03-22

申请号：US15822659

申请日：2017-11-27

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu IGARASHI

IPC: A61B1/06 ,  G02B23/26 ,  A61B1/00 ,  A61B1/05

CPC classification number: A61B1/0676 ,  A61B1/00096 ,  A61B1/05 ,  A61B1/06 ,  A61B1/0607 ,  A61B1/0661 ,  G02B23/243 ,  G02B23/2469 ,  G02B23/26

Abstract: There is provided an endoscope illuminating optical system in which a favorable light-distribution can be achieved even in a case of a wide in-water angle of view, and which is suitable for mounting in a medical endoscope having a thin diameter.An endoscope illuminating optical system at a front end of an insertion portion of endoscope includes a lens formed by a transparent-resin molding having a function of a front-end frame, which is disposed at a front-end side of the insertion portion, and a light guide which is disposed adjacent to the lens, wherein a surface of a lens facing the light guide is a composite concave surface in which two axisymmetric concave surfaces are overlapped, and has a gourd-shaped effective cross-section, and an effective range of the light guide has a shape of an ellipsoid, or an oval-shape or a gourd-shape end surface end surface having a long axis in a longitudinal direction of the gourd-shaped effective cross-section on a side of the surface of the lens facing the light guide side, and a short axis in a direction perpendicular to the long axis, the cross-section of the composite concave surface includes an end surface of the light guide, the endoscope illuminating optical system satisfies the following conditional expressions (1), (2), and (3) 1.2

公开(公告)号：US20170235121A1

公开(公告)日：2017-08-17

申请号：US15582631

申请日：2017-04-29

Applicant: OLYMPUS CORPORATION

Inventor： Tsutomu IGARASHI

IPC: G02B23/24 ,  G02B13/04 ,  G02B9/60 ,  A61B1/00 ,  A61B1/04

CPC classification number: G02B23/243 ,  A61B1/00163 ,  A61B1/00183 ,  A61B1/00188 ,  A61B1/04 ,  G02B9/60 ,  G02B13/04 ,  G02B13/06 ,  G02B23/26

Abstract: There is provided an endoscope objective optical system having a thin diameter, a wide in-water angle of view, a small variation in the angle of view, and a short overall length of the optical system.The endoscope objective optical system includes in order from an object side, a front group GF having a negative refractive power, an aperture stop, and a rear group GR having a positive refractive power, wherein the front group includes a first negative lens L1 and a second negative lens L2, and the following conditional expressions (1), (2), (3′), and (4) are satisfied: 1