JP6984736B2 - 撮像装置及び撮像方法 - Google Patents
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- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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- G01N21/47—Scattering, i.e. diffuse reflection
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N21/47—Scattering, i.e. diffuse reflection
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- 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
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- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
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- G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
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Description
そのため、(17)式から、以下の(18)式が得られる。
上述した撮像装置100には、変形例が考えられる。
上述した撮像装置100により、画像が再構築されることを、シミュレーションにより確認した。
光源が発した光を伝送する導波路と、
前記導波路を通過した前記光によって発生し、対象に照射されたスペックルパターンのパワーを検出する検出器と、
それぞれ異なる条件によって前記導波路へ前記光を入射して得られた複数の前記パワーに基づいて、前記対象の画像を再構築する再構築手段と、
を備える撮像装置。
前記光を前記導波路へ入射する場合の前記条件を変化させる変調器を備える、
付記1に記載の撮像装置。
前記変調器は、前記光の前記導波路への入射角度を変更することにより前記条件を変化させる、
付記2に記載の撮像装置。
前記変調器は、前記光の波面を変更することにより前記条件を変化させる、
付記2に記載の撮像装置。
前記変調器は、前記光の波長を変更することにより前記条件を変化させる、
付記2に記載の撮像装置。
前記導波路は、マルチモード導波路である、
付記1から5のいずれか一項に記載の撮像装置。
前記再構築手段は、ADMM(alternating direction method of multipliers)アルゴリズムにより前記画像を再構築する、
付記1から6のいずれか一項に記載の撮像装置。
前記再構築手段は、前記条件及び前記条件に応じて発生したスペックルパターンに対して求められた変換行列を用いて、前記ADMMアルゴリズムにより前記画像を再構築する、
付記7に記載の撮像装置。
複数の波長の前記光を発生する前記光源と、
前記光源が発生した前記光を波長毎に分離する波長分離手段とを更に備え、
前記再構築手段は、複数の波長の前記光の各々に関して検出された複数の前記パワーに基づいて、前記複数の波長の光の各々について前記画像を再構築する、
付記1から8のいずれか一項に記載の撮像装置。
複数の波長の前記光のうち、選択された波長の光を発生可能な前記光源と、
前記光源から発生する光の波長を制御する波長制御手段とを更に備え、
前記再構築手段は、複数の波長の前記光の各々に関して検出された複数の前記パワーに基づいて、前記複数の波長の光の各々について前記画像を再構築する、
付記1から8のいずれか一項に記載の撮像装置。
導波路を通過した光によって発生し、対象に照射されたスペックルパターンのパワーを検出し、
それぞれ異なる条件によって前記導波路へ前記光を入射して得られた複数の前記パワーに基づいて、前記対象の画像を再構築する、
撮像方法。
110 導波路
120 検出器
130 再構築部
11 光源
12 変調器
13 変調制御部
14 光学系
15 ビームスプリッタ
16 レンズプローブ
17 ターゲット
18 カメラ
Claims (10)
- 光源が発した光を伝送する導波路と、
前記導波路を通過した前記光によって発生し、対象に照射されたスペックルパターンのパワーを検出する検出器と、
それぞれ異なる条件によって前記導波路へ前記光を入射して得られた複数の前記パワーに基づいて、前記対象の画像を再構築する再構築手段と、
を備える撮像装置。 - 前記光を前記導波路へ入射する場合の前記条件を変化させる変調器を備える、
請求項1に記載の撮像装置。 - 前記変調器は、前記光の前記導波路への入射角度を変更することにより前記条件を変化させる、
請求項2に記載の撮像装置。 - 前記変調器は、前記光の波面を変更することにより前記条件を変化させる、
請求項2に記載の撮像装置。 - 前記導波路は、マルチモード導波路である、
請求項1から4のいずれか一項に記載の撮像装置。 - 前記再構築手段は、ADMM(alternating direction method of multipliers)アルゴリズムにより前記画像を再構築する、
請求項1から5のいずれか一項に記載の撮像装置。 - 前記再構築手段は、前記条件及び前記条件に応じて発生したスペックルパターンに対して求められた変換行列を用いて、前記ADMMアルゴリズムにより前記画像を再構築する、
請求項6に記載の撮像装置。 - 複数の波長の前記光を発生する前記光源と、
前記光源が発生した前記光を波長毎に分離する波長分離手段とを更に備え、
前記再構築手段は、複数の波長の前記光の各々に関して検出された複数の前記パワーに基づいて、前記複数の波長の光の各々について前記画像を再構築する、
請求項1から7のいずれか一項に記載の撮像装置。 - 複数の波長の前記光のうち、選択された波長の光を発生可能な前記光源と、
前記光源から発生する光の波長を制御する波長制御手段とを更に備え、
前記再構築手段は、複数の波長の前記光の各々に関して検出された複数の前記パワーに基づいて、前記複数の波長の光の各々について前記画像を再構築する、
請求項1から7のいずれか一項に記載の撮像装置。 - 導波路を通過した光によって発生し、対象に照射されたスペックルパターンのパワーを検出し、
それぞれ異なる条件によって前記導波路へ前記光を入射して得られた複数の前記パワーに基づいて、前記対象の画像を再構築する、
撮像方法。
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PCT/JP2019/011722 WO2019182019A1 (ja) | 2018-03-20 | 2019-03-20 | 撮像装置及び撮像方法 |
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US5956447A (en) * | 1996-05-07 | 1999-09-21 | Univ Central Florida | Device and method for image acquisition through multi-mode fiber |
WO2007030741A2 (en) * | 2005-09-09 | 2007-03-15 | Trustees Of Boston University | Imaging system using dynamic speckle illumination |
KR101252938B1 (ko) * | 2011-04-08 | 2013-04-12 | 한국과학기술원 | 초고해상도 현미경 시스템 및 그 시스템을 이용한 영상 획득 방법 |
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WO2015089308A1 (en) * | 2013-12-11 | 2015-06-18 | The General Hospital Corporation | Apparatus and method for high-speed full field optical coherence microscopy |
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US20190028641A1 (en) * | 2015-12-17 | 2019-01-24 | Université D'aix-Marseille | Systems and methods for high resolution imaging using a bundle of optical fibers |
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