Auto-focusing device of endoscope



PROBLEM TO BE SOLVED: To provide an auto-focusing device of endoscope which enables enlarging observation of the auto-focusing area as a whole, at proximity enlargement. SOLUTION: A light-sending system which sends light to a light emitting source of the tip part of the endoscope body is composed of a light-sending lens 3, a light-emitting body and a plurality of light-sending fibers used exclusively for distance-measuring lights 6a, 6b, 6c, which are inserted into a part to be inserted inside a body and send the light of the light-emitting source to the light-sending lens 3. Therein, a plurality of distance-measuring areas (a), (b), (c) of one observed object 11 are irradiated with the AF reference beams among a plurality of the light sending fibers used exclusively for distance- measuring light 6a, 6b, 6c and distance measurement is conducted, on the basis of the plural beams of distance measuring light from the respective distance- measuring areas (a), (b), (c). COPYRIGHT: (C)2003,JPO
(57)【要約】 【目的】近接拡大時に測距エリアの全体が拡大観察する ことが可能となる内視鏡の測距装置を得る。 【構成】内視鏡本体の先端部の発光源に送光する送光系 を、送光レンズ3と、発光体と、発光体の光を送光レン ズ3に送光する、体内挿入部内に挿通した複数の測距光 専用送光ファイバー6a、6b、6cとから構成し、複 数の測距光専用送光ファイバー6a、6b、6cから1 つの観察物体11の複数の測距エリアa、b、cにAF 参照ビームを照射し、各測距エリアa、b、cからの複 数の測距光に基いて測距を行う。




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Patent Citations (5)

    Publication numberPublication dateAssigneeTitle
    JP-H03197806-AAugust 29, 1991Olympus Optical Co LtdMeasurement light projector
    JP-H03200941-ASeptember 02, 1991Seikosha Co LtdRange finder for camera
    JP-H10239023-ASeptember 11, 1998Olympus Optical Co Ltd, オリンパス光学工業株式会社三次元計測装置
    JP-H10239029-ASeptember 11, 1998Olympus Optical Co Ltd, オリンパス光学工業株式会社Three-dimensional shape measuring device
    JP-H11304470-ANovember 05, 1999Hamamatsu Photonics Kk, 浜松ホトニクス株式会社距離検出器

NO-Patent Citations (0)


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    JP-2005274577-AOctober 06, 2005Mitsutoyo Corp, 株式会社ミツトヨ位置測定装置
    JP-2009225933-AOctober 08, 2009Fujifilm Corp, 富士フイルム株式会社カプセル内視鏡システム及びカプセル内視鏡の動作制御方法
    JP-4686229-B2May 25, 2011株式会社ミツトヨ位置測定装置