JP5342869B2 - 内視鏡装置、内視鏡照明装置、画像形成装置、内視鏡照明装置の作動方法および画像形成装置の作動方法 - Google Patents
内視鏡装置、内視鏡照明装置、画像形成装置、内視鏡照明装置の作動方法および画像形成装置の作動方法 Download PDFInfo
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0062—Arrangements for scanning
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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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- 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
- A61B1/00163—Optical arrangements
- A61B1/00172—Optical arrangements with means for scanning
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- 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
- A61B1/04—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 combined with photographic or television appliances
- A61B1/043—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 combined with photographic or television appliances for fluorescence imaging
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- A—HUMAN NECESSITIES
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- 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
- A61B1/06—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 with illuminating arrangements
- A61B1/063—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 with illuminating arrangements for monochromatic or narrow-band illumination
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- A61B1/06—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 with illuminating arrangements
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B1/06—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 with illuminating arrangements
- A61B1/07—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 with illuminating arrangements using light-conductive means, e.g. optical fibres
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0071—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence by measuring fluorescence emission
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- A61B5/0059—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence
- A61B5/0082—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes
- A61B5/0084—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters
- A61B5/0086—Measuring for diagnostic purposes; Identification of persons using light, e.g. diagnosis by transillumination, diascopy, fluorescence adapted for particular medical purposes for introduction into the body, e.g. by catheters using infrared radiation
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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
- G02B23/2407—Optical details
- G02B23/2461—Illumination
- G02B23/2469—Illumination using optical fibres
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- G—PHYSICS
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- G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
- G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
- G02B26/10—Scanning systems
- G02B26/103—Scanning systems having movable or deformable optical fibres, light guides or waveguides as scanning elements
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- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- H—ELECTRICITY
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- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
Description
I=2×π×r=2000/2 ・・・(1)
I=2×π×r=2000/3 ・・・(2)
16 SFEスキャナ
17 走査型光ファイバ
20R、20G、20B レーザー光源
30 プロセッサ
33A 第1画像用メモリ
33B 第2画像用メモリ
33C 第3画像メモリ
40 コントローラ
Claims (18)
- 第1の照明光と、第1の照明光とは波長領域の異なる第2の照明光とを照射可能な光源と、
前記光源からの照明光をスコープ先端部へ伝達する光ファイバと、
光ファイバ先端部を振動させることによって、観察対象に対し照明光を螺旋状に走査させる走査手段と、
走査位置に応じて、前記第1の照明光と第2の照明光の照射を切り替え制御する光源制御手段と、
所定のサンプリングレートによって観察対象に応じた画素データを検出し、観察画像を生成する画像形成手段とを備え、
前記光源制御手段が、前記第1の照明光によるスポットと前記第2の照明光によるスポットとを混在させるように、照射を切り替え制御し、
前記画像形成手段が、前記第1の照明光による画素データから第1の観察画像を生成し、前記第2の照明光による画素データから第2の観察画像を生成することを特徴とすることを特徴とする内視鏡装置。 - 前記光源制御手段が、前記所定のサンプリングレートによるサンプル間隔が観察画像解像度に従う画素間隔より短い所定の走査範囲において、前記第1の照明光と前記第2の照明光とを混在させることを特徴とする請求項1に記載の内視鏡装置。
- 前記光源制御手段が、観察対象の中央エリアにおいて、前記第1の照明光と前記第2の照明光とを混在させることを特徴とする請求項2に記載の内視鏡装置。
- 前記所定の走査範囲が、前記第1の観察画像と前記第2の観察画像との解像度を同レベルに設定可能な走査範囲として定められることを特徴とする請求項2に記載の内視鏡装置。
- 前記所定の走査範囲が、一周分のスパイラル状走査ラインに沿ったサンプル画素数に対し取捨可能な画素数の割合に基づいて定められることを特徴とする請求項2に記載の内視鏡装置。
- 前記光源制御手段が、前記所定の走査範囲外において、前記第1の照明光もしくは前記第2の照明光を単独で照射させることを特徴とする請求項2乃至5のいずれかに記載の内視鏡装置。
- 前記光源制御手段が、走査エリア全体を照射させる照明光を、前記第1の照明光と第2の照明光との間で切り替え可能であることを特徴とする請求項6に記載の内視鏡装置。
- 前記光源制御手段が、走査位置に応じて前記第1の照明光と前記第2の照明光とを交互にパルス照射させることを特徴とする請求項1乃至7のいずれかに記載の内視鏡装置。
- 前記第1の観察画像と前記第2の観察画像とを同時に画面表示させる表示処理手段をさらに備えたことを特徴とする請求項1乃至8のいずれかに記載の内視鏡装置。
- 前記第1の照明光および前記第2の照明光が、それぞれ、カラー観察画像用の光、蛍光観察画像用の励起光、赤外光の波長を含むあるいはそれに近い長波長領域の光のいずれかであることを特徴とする請求項1乃至9のいずれかに記載の内視鏡装置。
- 前記光源が、第1の照明光および第2の照明光とは波長領域の異なる第3の照明光を照射可能であり、
前記光源制御手段が、走査位置に応じて、前記第1の照明光と第2の照明光と第3の照明光の照射を切り替え制御し、
前記光源制御手段が、前記第1の照明光によるスポットと、前記第2の照明光によるスポットと、前記第3の照明光によるスポットとを混在させるように、照射を切り替え制御し、
前記画像形成手段が、前記第3の照明光による画素データから第3の観察画像を生成することを特徴とする請求項1に記載の内視鏡装置。 - 前記光源制御手段が、走査位置に応じて前記第1の照明光と前記第2の照明光と前記第3の照明光を交互にパルス照射させることを特徴とする請求項11に記載の内視鏡装置。
- 前記第1の観察画像と前記第2の観察画像と前記第3の観察画像とを同時に画面表示させる画像信号処理手段をさらに備えたことを特徴とする請求項11乃至12のいずれかに記載の内視鏡装置。
- 前記第3の照明光が、赤外光の波長を含むあるいはそれに近い長波長領域の光であって、
第3の照明光に基づき、内視鏡先端から観察対象までの距離を測定する距離測定手段をさらに備えることを特徴とする請求項11に記載の内視鏡装置。 - 第1の照明光と、第1の照明光とは波長領域の異なる第2の照明光とを照明光として照射可能な光源から照射される照明光を、観察対象に対し螺旋状に走査させる走査手段と、
走査位置に応じて、前記第1の照明光と第2の照明光の照射を切り替え制御する光源制御手段とを備え、
前記光源制御手段が、前記第1の照明光によるスポットと前記第2の照明光によるスポットとを混在させるように、照射を切り替え制御することを特徴とする内視鏡照明装置。 - 請求項15に記載された内視鏡照明装置によって前記第1の照明光および前記第2の照明光により照射された観察対象からの反射光から、所定のサンプリングレートによって観察対象に応じた画素データを検出する画素検出手段と、
前記第1の照明光による画素データから第1の観察画像を生成し、前記第2の照明光による画素データから第2の観察画像を生成する画像生成手段と
を備えたことを特徴とする画像形成装置。 - 走査手段が、第1の照明光と第1の照明光とは波長領域の異なる第2の照明光とを照明光として放射可能な光源から放射される照明光を、観察対象に対し螺旋状に走査させ、
光源制御手段が、走査位置に応じて、前記第1の照明光と第2の照明光の放射を切り替え制御する内視鏡照明装置の作動方法であって、
前記光源制御手段が、前記第1の照明光によるスポットと前記第2の照明光によるスポットとを混在させるように、放射を切り替えることを特徴とする内視鏡照明装置の作動方法。 - 画素検出手段が、請求項17に記載された内視鏡照明装置の作動方法によって放射された前記第1の照明光および前記第2の照明光による観察対象からの反射光から、所定のサンプリングレートによって観察対象に応じた画素データを検出し、
画像生成手段が、前記第1の照明光による画素データから第1の観察画像を生成し、前記第2の照明光による画素データから第2の観察画像を生成することを特徴とする画像形成装置の作動方法。
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JP2008326361A JP5342869B2 (ja) | 2008-12-22 | 2008-12-22 | 内視鏡装置、内視鏡照明装置、画像形成装置、内視鏡照明装置の作動方法および画像形成装置の作動方法 |
US12/644,248 US20100157039A1 (en) | 2008-12-22 | 2009-12-22 | Endoscope system with scanning function |
DE102009059979A DE102009059979A1 (de) | 2008-12-22 | 2009-12-22 | Endoskopsystem mit Abstastfunktion |
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