Nirec Corporation

Kochi University

Mizuho Corporation

Haruyasu Katahira

Tetsuo Sumida

Takayuki Sato

Shigehiro Kanayama

Ichiro Kitani

Hiromi Sato

An endoscope includes a handle operation unit. The handle operation unit includes: an outer ring; a cam ring accommodated in the outer ring to rotate in accordance with rotation of the outer ring about a central axis and having a pair of guide holes; a pair of slide members accommodated in the respective guide holes and fixed to a force transmission member; and a support portion having a pair of slide grooves extending along a longitudinal direction of the endoscope, the support portion being accommodated in the cam ring to support the pair of slide members. The slide members slide in the respective slide grooves in accordance with the rotation of the outer ring. The field of view of the image-capturing unit is changed in accordance with sliding of the pair of slide members.

Endoscope and handle operation unit

An endoscope includes a scope and an image capturing unit accommodated inside the scope. The image capturing unit includes: first and second prisms; a reflection film provided between oblique faces of the first and second prisms; a first trimming filter on which visible light transmitted through the first prism is incident on the first trimming filter via the reflection film; a first image sensor facing the first trimming filter; a second trimming filter on which near-infrared light transmitted through the second prism being incident on the second trimming filter via the reflection film; and a second image sensor facing the second trimming filter. The first prism is fixed to the second prism, the first trimming filter is fixed to the first prism, and the second trimming filter is fixed to the second prism.

Endoscope and image capturing unit provided therein

Growing community of inventors

Kanagawa, Japan

Haruyasu Katahira