JPWO2017047115A1 - 光走査型観察システム - Google Patents
光走査型観察システム Download PDFInfo
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- A—HUMAN NECESSITIES
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/00002—Operational features of endoscopes
- A61B1/00004—Operational features of endoscopes characterised by electronic signal processing
- A61B1/00009—Operational features of endoscopes characterised by electronic signal processing of image signals during a use of endoscope
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- A—HUMAN NECESSITIES
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- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B1/00002—Operational features of endoscopes
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Abstract
Description
X(t)=Ax×G(t)×sin(2πft) ・・・(1)
また、信号発生器33は、コントローラ25の制御に基づき、照明用ファイバ12の出射端部をY軸方向に揺動させるための第2の駆動御信号として、例えば、下記数式(2)により示されるような波形を具備する信号を生成してD/A変換器34bに出力するように構成されている。なお、下記数式(2)において、Y(t)は時刻tにおける信号レベルを表し、Ayは時刻tに依存しない振幅値を表し、G(t)は正弦波sin(2πft+φ)の変調に用いられる所定の関数を表し、φは位相を表すものとする。
Y(t)=Ay×G(t)×sin(2πft+φ) ・・・(2)
D/A変換器34aは、信号発生器33から出力されたデジタルの第1の駆動制御信号をアナログの電圧信号である駆動信号DAに変換してアンプ35aへ出力するように構成されている。
Claims (7)
- 光源部から供給される照明光を導光して端部から出射する導光部と、
前記導光部の端部を揺動することにより、前記端部を経て被写体へ出射される前記照明光の照射位置を渦巻状の走査経路に沿って変位させることが可能なアクチュエータ部と、
前記被写体からの戻り光を検出し、当該検出した戻り光に応じた光検出信号を生成して順次出力する光検出部と、
前記光検出部から順次出力される前記光検出信号を変換して得られる画素情報を、前記渦巻状の走査経路の中心点を回転中心とする所望の回転角度に応じて回転することにより回転画像を生成するための処理を行う画像生成部と、
を有することを特徴とする光走査型観察システム。 - 前記渦巻状の走査経路の最外点に相当する前記照明光の照射位置のずれの大きさを示す誤差角度を取得するための処理を行う誤差角度取得部をさらに有し、
前記画像生成部は、前記所望の回転角度から前記前記誤差角度を減じて得られる角度だけ前記画素情報を回転することにより前記回転画像を生成する
ことを特徴とする請求項1に記載の光走査型観察システム。 - 前記画像生成部は、前記光検出信号の出力タイミングと、前記画素情報の適用先となる画素位置と、の間の対応関係を示すテーブルに基づいて前記画素情報をマッピングすることにより元画像を生成するための処理を行うとともに、前記元画像の各画素位置における前記画素情報を前記所望の回転角度に応じて回転することにより前記回転画像を生成するための処理を行う
ことを特徴とする請求項1に記載の光走査型観察システム。 - 前記テーブルの中から前記渦巻状の走査経路の中心点に相当する画素位置の画素を抽出し、当該抽出した画素を前記画像生成部により生成される前記回転画像の回転中心の画素として設定するための処理を行う設定部をさらに有する
ことを特徴とする請求項3に記載の光走査型観察システム。 - 前記画像生成部は、前記回転画像を生成するための処理に併せ、前記元画像を拡大または縮小するための処理を行う
ことを特徴とする請求項3に記載の光走査型観察システム。 - 前記誤差角度は、前記導光部及び前記アクチュエータ部を有する内視鏡に設けられたメモリに格納される
ことを特徴とする請求項1に記載の光走査型観察システム。 - 前記画像生成部は、前記所望の回転角度の現在の設定値を示す視覚情報を前記回転画像に併せて表示装置に表示させるための動作を行う
ことを特徴とする請求項1に記載の光走査型観察システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2015184108 | 2015-09-17 | ||
JP2015184108 | 2015-09-17 | ||
PCT/JP2016/053659 WO2017047115A1 (ja) | 2015-09-17 | 2016-02-08 | 光走査型観察システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2017047115A1 true JPWO2017047115A1 (ja) | 2018-08-09 |
JP6640231B2 JP6640231B2 (ja) | 2020-02-05 |
Family
ID=58288602
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2017540523A Active JP6640231B2 (ja) | 2015-09-17 | 2016-02-08 | 光走査型観察システム |
Country Status (3)
Country | Link |
---|---|
US (1) | US20180199798A1 (ja) |
JP (1) | JP6640231B2 (ja) |
WO (1) | WO2017047115A1 (ja) |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0490743A (ja) * | 1990-08-02 | 1992-03-24 | Olympus Optical Co Ltd | 内視鏡装置 |
JPH10262921A (ja) * | 1997-03-24 | 1998-10-06 | Olympus Optical Co Ltd | 電子内視鏡装置 |
US7037258B2 (en) * | 1999-09-24 | 2006-05-02 | Karl Storz Imaging, Inc. | Image orientation for endoscopic video displays |
US7922654B2 (en) * | 2004-08-09 | 2011-04-12 | Boston Scientific Scimed, Inc. | Fiber optic imaging catheter |
US8929688B2 (en) * | 2004-10-01 | 2015-01-06 | University Of Washington | Remapping methods to reduce distortions in images |
WO2015004960A1 (ja) * | 2013-07-12 | 2015-01-15 | オリンパスメディカルシステムズ株式会社 | 内視鏡システム |
-
2016
- 2016-02-08 JP JP2017540523A patent/JP6640231B2/ja active Active
- 2016-02-08 WO PCT/JP2016/053659 patent/WO2017047115A1/ja active Application Filing
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2018
- 2018-03-14 US US15/920,550 patent/US20180199798A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
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JP6640231B2 (ja) | 2020-02-05 |
WO2017047115A1 (ja) | 2017-03-23 |
US20180199798A1 (en) | 2018-07-19 |
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