公开(公告)号：US20200099845A1

公开(公告)日：2020-03-26

申请号：US16691961

申请日：2019-11-22

Applicant: OLYMPUS CORPORATION

Inventor： Koji MATSUMOTO ,  Sho SHINJI ,  Kenji URUSHIBATA ,  Hiroyuki KUBO ,  Tetsuhiro OKA

IPC: H04N5/235 ,  A61B1/045 ,  A61B1/06

Abstract: An endoscope system of the present invention includes: a first illumination unit that emits first illumination light for imaging two sets of image information about a subject at different depths; a second illumination unit that emits second illumination light having a wide band covering a visible band from a position different from the position of the first illumination light; an imaging unit that images a first illumination image and a second illumination image of the subject that is illuminated with the first illumination light and the second illumination light; a separation processing unit that separates the two sets of image information from the first illumination image; and a separated-image generating unit that generates two separated images by processing the second illumination image using the two sets of image information.

公开(公告)号：US20190313891A1

公开(公告)日：2019-10-17

申请号：US16457124

申请日：2019-06-28

Applicant: OLYMPUS CORPORATION

Inventor： Tetsuhiro OKA

IPC: A61B1/07 ,  F21V8/00 ,  A61B1/00

Abstract: An illumination optical system includes a diffusion element that diffuses illumination light entering from a light source, the diffusion element emitting the illumination light. The diffusion element is formed by dispersing fine particles of at least one kind in a homogeneous medium that is made of a material different from the fine particles, and the diffusion element satisfies a specific conditional expressions.

公开(公告)号：US20190082085A1

公开(公告)日：2019-03-14

申请号：US16156828

申请日：2018-10-10

Applicant: OLYMPUS CORPORATION

Inventor： Tetsuhiro OKA

IPC: H04N5/225 ,  G02B27/09

CPC classification number: H04N5/2254 ,  A61B1/00096 ,  A61B1/0623 ,  A61B1/07 ,  G02B23/243 ,  G02B23/2469 ,  G02B23/26 ,  G02B27/0955 ,  G02B27/0977 ,  H04N5/22521 ,  H04N5/2256 ,  H04N2005/2255

Abstract: An image capturing device includes: an image capturing system having an optical axis; and at least one illumination system disposed at a position so as to surround the optical axis. The illumination system includes: a reflective surface deflecting part of illumination light; a refractive surface deflecting the other part of the illumination light and the illumination light reflected by the reflective surface; and an emission surface from which the illumination light refracted by the refractive surface is emitted. In a cross section including the optical axis, the reflective surface has an area inclined in such a direction as to become farther away from the optical axis, the refractive surface has an area inclined in such a direction as to approach the optical axis and is disposed between the reflective and emission surfaces. The emission end is disposed at a radial position between rear ends of the refractive and reflective surfaces.

公开(公告)号：US20190046023A1

公开(公告)日：2019-02-14

申请号：US16159092

申请日：2018-10-12

Applicant: OLYMPUS CORPORATION

Inventor： Tetsuhiro OKA

IPC: A61B1/06 ,  A61B1/05 ,  G02B23/24

Abstract: An illumination optical system according to the present invention is provided with: an illumination-light guiding portion configured to guide illumination light emitted from a light source portion; and an illumination-light deflecting portion configured to emit the illumination light guided thereto by the illumination-light guiding portion after deflecting the illumination light by means of reflection, wherein, in one cross-section along a direction in which the illumination light travels, the illumination-light guiding portion has a pair of total reflection surfaces in which the distance therebetween gradually increases in a forward traveling direction of the illumination light, and the illumination-light deflecting portion is provided with an emission surface from which the illumination light guided by the illumination-light guiding portion is emitted, and a reflection surface that has a convex shape facing the emission surface and that reflects the illumination light guided by the illumination-light guiding portion toward the emission surface.

公开(公告)号：US20200099844A1

公开(公告)日：2020-03-26

申请号：US16691865

申请日：2019-11-22

Applicant: OLYMPUS CORPORATION

Inventor： Sho SHINJI ,  Koji MATSUMOTO ,  Tetsuhiro OKA ,  Kenji URUSHIBATA ,  Hiroyuki KUBO

IPC: H04N5/235 ,  A61B1/045 ,  A61B1/06 ,  A61B1/00

Abstract: An endoscope system according to the present invention includes: an illumination unit that radiates illumination light onto a subject, the illumination light having a spatially non-uniform intensity distribution including a light section and a dark section in a beam cross section orthogonal to an optical axis; an imaging unit that images an illumination image of the subject irradiated with the illumination light; and a separation processor that generates two separate images from the illumination image. Among intensity values of pixels within the illumination image respectively corresponding to the light section, the dark section, and a section having intermediate intensity between the light section and the dark section, the separation processor generates the two separate images based on at least two of the intensity values.