JP6198448B2 - 光断層画像撮影装置 - Google Patents
光断層画像撮影装置 Download PDFInfo
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- JP6198448B2 JP6198448B2 JP2013096752A JP2013096752A JP6198448B2 JP 6198448 B2 JP6198448 B2 JP 6198448B2 JP 2013096752 A JP2013096752 A JP 2013096752A JP 2013096752 A JP2013096752 A JP 2013096752A JP 6198448 B2 JP6198448 B2 JP 6198448B2
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B3/00—Apparatus for testing the eyes; Instruments for examining the eyes
- A61B3/10—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions
- A61B3/102—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for optical coherence tomography [OCT]
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02001—Interferometers characterised by controlling or generating intrinsic radiation properties
- G01B9/02002—Interferometers characterised by controlling or generating intrinsic radiation properties using two or more frequencies
- G01B9/02004—Interferometers characterised by controlling or generating intrinsic radiation properties using two or more frequencies using frequency scans
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/0207—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer
- G01B9/02072—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/0207—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer
- G01B9/02072—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer
- G01B9/02074—Error reduction by correction of the measurement signal based on independently determined error sources, e.g. using a reference interferometer by calibration or testing of interferometer of the detector
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/0209—Low-coherence interferometers
- G01B9/02091—Tomographic interferometers, e.g. based on optical coherence
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02092—Self-mixing interferometers, i.e. feedback of light from object into laser cavity
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B2560/00—Constructional details of operational features of apparatus; Accessories for medical measuring apparatus
- A61B2560/02—Operational features
- A61B2560/0223—Operational features of calibration, e.g. protocols for calibrating sensors
- A61B2560/0228—Operational features of calibration, e.g. protocols for calibrating sensors using calibration standards
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02
- G01B2290/60—Reference interferometer, i.e. additional interferometer not interacting with object
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02015—Interferometers characterised by the beam path configuration
- G01B9/02029—Combination with non-interferometric systems, i.e. for measuring the object
- G01B9/0203—With imaging systems
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B9/00—Measuring instruments characterised by the use of optical techniques
- G01B9/02—Interferometers
- G01B9/02055—Reduction or prevention of errors; Testing; Calibration
- G01B9/02062—Active error reduction, i.e. varying with time
- G01B9/02067—Active error reduction, i.e. varying with time by electronic control systems, i.e. using feedback acting on optics or light
- G01B9/02069—Synchronization of light source or manipulator and detector
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Surgery (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Heart & Thoracic Surgery (AREA)
- Medical Informatics (AREA)
- Molecular Biology (AREA)
- Ophthalmology & Optometry (AREA)
- Animal Behavior & Ethology (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Optics & Photonics (AREA)
- Investigating Or Analysing Materials By Optical Means (AREA)
- Eye Examination Apparatus (AREA)
Description
12・・光源
20・・干渉計
22・・参照ミラー
24・・ビームスプリッタ
26・・受光素子
48・・ホットミラー
50・・観察光学系
62・・モニタ
64・・演算装置
Claims (4)
- 周期的に光の波長を走査する光源と、
光源からの光を被検物の内部に照射すると共にその反射光を導く測定光学系と、
光源からの光を案内して参照光とする参照光学系と、
測定光学系又は参照光学系から分岐された光源からの光を、一端に第1の較正用反射面を有し、他端に第2の較正用反射面を有する光学部材に照射すると共に、その光学部材で反射される反射光を案内する較正光学系と、
測定光学系により導かれた反射光と参照光学系により案内された参照光とが合成された測定用干渉光と、較正光学系により案内された反射光と参照光学系により案内された参照光とが合成された較正用干渉光とを受光する受光素子と、
受光素子で受光された較正用干渉光を解析することで光源の波長の非線形性を補正するための較正用データを取得し、その較正用データを用いて受光素子で受光された測定用干渉光を補正すると共に、補正された測定用干渉光から算出される測定値を第1の較正用反射面から第2の較正用反射面までの距離に基づいて補正する演算装置と、を有しており、
光学部材は、照射された光の一部が第1の較正用反射面で反射し、残りの光の一部が第2の較正用反射面で反射するように構成されており、
較正用干渉光は、第1の較正用反射面および第2の較正用反射面の少なくともいずれか一方により反射される反射光を用いて取得される、光断層画像撮影装置。 - 較正光学系の少なくとも1つの較正用反射面は、光源からの光路長が予め設定された設定長となる位置に固定されている、請求項1に記載の光断層画像撮影装置。
- 較正光学系の少なくとも1つの較正用反射面は、光軸方向に移動可能となっている、請求項1に記載の光断層画像撮影装置。
- 被検物が人体の眼である、請求項1〜3のいずれか一項に記載の光断層画像撮影装置。
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2013096752A JP6198448B2 (ja) | 2013-05-02 | 2013-05-02 | 光断層画像撮影装置 |
US14/267,283 US9360297B2 (en) | 2013-05-02 | 2014-05-01 | Optical coherence tomography device having a plurality of calibration reflecting surfaces |
EP14166839.2A EP2801317B1 (en) | 2013-05-02 | 2014-05-02 | Optical coherence tomography |
Applications Claiming Priority (1)
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JP2013096752A JP6198448B2 (ja) | 2013-05-02 | 2013-05-02 | 光断層画像撮影装置 |
Publications (2)
Publication Number | Publication Date |
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JP2014219226A JP2014219226A (ja) | 2014-11-20 |
JP6198448B2 true JP6198448B2 (ja) | 2017-09-20 |
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JP2013096752A Active JP6198448B2 (ja) | 2013-05-02 | 2013-05-02 | 光断層画像撮影装置 |
Country Status (3)
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US (1) | US9360297B2 (ja) |
EP (1) | EP2801317B1 (ja) |
JP (1) | JP6198448B2 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11202562B2 (en) | 2018-09-11 | 2021-12-21 | Tomey Corporation | Ophthalmic apparatus |
US11369265B2 (en) | 2018-12-05 | 2022-06-28 | Tomey Corporation | Ophthalmic apparatus |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6261450B2 (ja) * | 2014-05-30 | 2018-01-17 | 株式会社トーメーコーポレーション | 眼科装置 |
JP6302853B2 (ja) * | 2015-02-10 | 2018-03-28 | アンリツ株式会社 | Oct装置 |
DE102018105877B3 (de) * | 2018-03-14 | 2019-02-28 | Precitec Gmbh & Co. Kg | Vorrichtung für die Bestimmung einer Ausrichtung einer optischen Vorrichtung eines Kohärenztomographen, Kohärenztomograph und Laserbearbeitungssystem |
Family Cites Families (20)
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US5956355A (en) * | 1991-04-29 | 1999-09-21 | Massachusetts Institute Of Technology | Method and apparatus for performing optical measurements using a rapidly frequency-tuned laser |
US5994690A (en) * | 1997-03-17 | 1999-11-30 | Kulkarni; Manish D. | Image enhancement in optical coherence tomography using deconvolution |
US7365858B2 (en) * | 2001-12-18 | 2008-04-29 | Massachusetts Institute Of Technology | Systems and methods for phase measurements |
EP1889037A2 (en) * | 2005-06-01 | 2008-02-20 | The General Hospital Corporation | Apparatus, method and system for performing phase-resolved optical frequency domain imaging |
JP4378533B2 (ja) * | 2005-10-04 | 2009-12-09 | 国立大学法人 筑波大学 | 光コヒーレンストモグラフィーの構成機器の較正方法 |
JP4837982B2 (ja) * | 2005-11-30 | 2011-12-14 | 株式会社ニデック | 眼科装置 |
WO2007065670A2 (de) * | 2005-12-06 | 2007-06-14 | Carl Zeiss Meditec Ag | Interferometrische probenmessung |
WO2007109127A2 (en) * | 2006-03-16 | 2007-09-27 | Duke University | Methods, systems, and computer program products for performng real-time quadrature projection based fourier domain optical coherence tomography |
WO2009018456A2 (en) * | 2007-07-31 | 2009-02-05 | The General Hospital Corporation | Systems and methods for providing beam scan patterns for high speed doppler optical frequency domain imaging |
JP2010014458A (ja) * | 2008-07-02 | 2010-01-21 | Fujifilm Corp | 較正用治具 |
JP5303804B2 (ja) | 2008-07-02 | 2013-10-02 | テルモ株式会社 | 光断層画像化装置の較正用の変換テーブルの作成方法 |
US8441648B2 (en) | 2008-02-07 | 2013-05-14 | Fujifilm Corporation | Calibration jig for optical tomographic imaging apparatus and method for generating a calibration conversion table |
TWI417534B (zh) | 2010-01-27 | 2013-12-01 | 私立中原大學 | Surface and internal interface of the contrast and measurement device |
JP5679686B2 (ja) | 2010-03-18 | 2015-03-04 | キヤノン株式会社 | 光干渉断層撮像装置 |
JP5675268B2 (ja) * | 2010-10-21 | 2015-02-25 | キヤノン株式会社 | 光干渉断層撮像装置、光干渉断層撮像方法、補償方法およびプログラム |
US20140221827A1 (en) * | 2011-06-07 | 2014-08-07 | California Institute Of Technology | Enhanced optical angiography using intensity contrast and phase contrast imaging methods |
JP2014523536A (ja) * | 2011-07-19 | 2014-09-11 | ザ ジェネラル ホスピタル コーポレイション | 光コヒーレンストモグラフィーにおいて偏波モード分散補償を提供するためのシステム、方法、装置およびコンピュータアクセス可能な媒体 |
JP5727326B2 (ja) * | 2011-08-02 | 2015-06-03 | 株式会社トプコン | 光断層画像化装置およびその動作制御方法 |
JP5946654B2 (ja) | 2012-03-02 | 2016-07-06 | 株式会社トーメーコーポレーション | 眼科装置 |
WO2014186674A2 (en) * | 2013-05-17 | 2014-11-20 | Ninepoint Medical, Inc. | Angular image manipulation |
-
2013
- 2013-05-02 JP JP2013096752A patent/JP6198448B2/ja active Active
-
2014
- 2014-05-01 US US14/267,283 patent/US9360297B2/en active Active
- 2014-05-02 EP EP14166839.2A patent/EP2801317B1/en active Active
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11202562B2 (en) | 2018-09-11 | 2021-12-21 | Tomey Corporation | Ophthalmic apparatus |
US11369265B2 (en) | 2018-12-05 | 2022-06-28 | Tomey Corporation | Ophthalmic apparatus |
Also Published As
Publication number | Publication date |
---|---|
US9360297B2 (en) | 2016-06-07 |
US20140327918A1 (en) | 2014-11-06 |
EP2801317A1 (en) | 2014-11-12 |
JP2014219226A (ja) | 2014-11-20 |
EP2801317B1 (en) | 2020-08-19 |
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