Olympus Corporation

Yuki Nakayama

Koichi Shiotani

Yuichi Wataya

Takahiko Mitani

Akira Muramatsu

An endoscope imaging unit includes: an objective lens including a first lens and a second lens; an imaging element configured to capture an image formed by the objective lens; a first lens frame configured to hold the first lens, the first lens frame including a lens barrel that holds the first lens and a flange portion that extends outward from an outer peripheral portion of the lens barrel; a second lens frame that is fixed to the first lens frame and holds the second lens; and a holder that accommodates at least part of the first lens frame and the second lens frame therein and holds the outer peripheral surface of the flange portion of the first lens frame; wherein the flange portion is fixed to the holder on a side surface thereof in an extending direction.

Endoscope imaging unit and endoscope

To provide an image pickup unit that can prevent axis deviation of a movable lens barrel and obtain high-quality picked-up image, a stopper member is positioned and fixed in a state in which the stopper member is abutted against an outer circumferential surface of a rear group lens barrel, movement of a movable lens barrel to a retraction side along a photographing optical axis is restricted by contact of a stopper section of the stopper member and an operation rod, and a movable lens is held in a position for realizing a second focal length.

Growing community of inventors

Mitaka, Japan

Yuki Nakayama