公开(公告)号：US20230051500A1

公开(公告)日：2023-02-16

申请号：US17876308

申请日：2022-07-28

Applicant: OLYMPUS CORPORATION

Inventor： Yuki NAGATA

IPC: A61B1/00 ,  A61B1/06

Abstract: An endoscope illumination system is provided in an insert part and includes an exit surface from which illumination light is emitted, an entrance side optical surface on which the illumination light is incident, and an exit side optical surface from which the illumination light goes out. The entrance side optical surface includes an inner light distribution surface and an outer light distribution surface. The outer light distribution surface is located farther from the center axis of the insert part than the inner light distribution surface. The inner light distribution surface includes a first inner surface. The first inner surface is a curved surface that is convex to the exit surface. The outer light distribution surface is a flat surface or a curved surface that is concave to the exit surface.

公开(公告)号：US20210137360A1

公开(公告)日：2021-05-13

申请号：US17157781

申请日：2021-01-25

Applicant: OLYMPUS CORPORATION

Inventor： Yuki NAGATA ,  Hiroyuki NAGAMIZU

IPC: A61B1/00 ,  A61B1/07 ,  A61B1/05

Abstract: An endoscope includes: an objective optical system including a lens, allowing light from an imaging subject to be incident on a distal end surface, and focusing the light onto an image-capturing surface of an image-capturing element; an elongated light guide provided adjacent to a side of the system and guiding illumination light to be emitted from a distal end; and an optically transparent distal end cover disposed at a position where the distal end of the guide is covered, wherein the distal end surface is located farther forward than the distal end of the guide, a notched portion is provided at a distal-end outer edge of a side surface of the system, the side surface being adjacent to the guide, so that the system is narrower toward a front side from the distal end of the guide, and the cover is provided so as to bulge toward the notched portion.