公开(公告)号：US20250064305A1

公开(公告)日：2025-02-27

申请号：US18764098

申请日：2024-07-03

Applicant: FUJIFILM Corporation

Inventor： Tomonori YOKOTA ,  Satoru TSUTO

IPC: A61B1/00 ,  A61B1/06

Abstract: A lens position control device is a lens position control device that controls a position of a variable magnification lens of a zooming optical system provided at an endoscope and includes a DC motor with a brush that generates a drive force for changing the position of the variable magnification lens, a drive circuit that drives the DC motor with a brush by repeating an application state where a drive voltage is applied between a pair of terminals of the DC motor with a brush and a release state where the terminals are released from each other, and a processor that controls the position of the variable magnification lens based on a time-integrated value of a counter-electromotive force generated at the DC motor with a brush in the release state.

公开(公告)号：US20230320568A1

公开(公告)日：2023-10-12

申请号：US18192789

申请日：2023-03-30

Applicant: FUJIFILM Corporation

Inventor： Yuta KAWAMOTO ,  Hisashi ENDO ,  Tomonori YOKOTA ,  Takashi OSANAI ,  Satoshi OZAWA

IPC: A61B1/00

CPC classification number: A61B1/00057 ,  A61B1/00055 ,  A61B1/00097

Abstract: An endoscope system includes an endoscope and a processor device. The processor device functions as an abnormality detection unit, an abnormality information generation unit, and an abnormality information management unit. The abnormality detection unit detects an abnormality of the endoscope by using information detected by an image sensor of the endoscope. The abnormality information generation unit generates abnormality information including sensor information detected by the image sensor at a time of abnormality detection and in a predetermined period before and after the abnormality detection and operating information of the endoscope. The abnormality information management unit stores the abnormality information in a memory.