WO1995033970A1 - Came rotative pour systemes optiques - Google Patents

Came rotative pour systemes optiques Download PDF

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Publication number
WO1995033970A1
WO1995033970A1 PCT/US1995/006071 US9506071W WO9533970A1 WO 1995033970 A1 WO1995033970 A1 WO 1995033970A1 US 9506071 W US9506071 W US 9506071W WO 9533970 A1 WO9533970 A1 WO 9533970A1
Authority
WO
WIPO (PCT)
Prior art keywords
radiation
cam
scattered
cam disk
measuring
Prior art date
Application number
PCT/US1995/006071
Other languages
English (en)
Inventor
Eric A. Swanson
Allen D. Pillsbury
James G. Fujimoto
Carmen A. Puliafito
Charles P. Lin
Joel S. Schuman
David Huang
Original Assignee
Massachusetts Institute Of Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Massachusetts Institute Of Technology filed Critical Massachusetts Institute Of Technology
Publication of WO1995033970A1 publication Critical patent/WO1995033970A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/06—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the phase of light
    • 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
    • A61B1/00163—Optical arrangements
    • A61B1/00174—Optical arrangements characterised by the viewing angles
    • A61B1/00183—Optical arrangements characterised by the viewing angles for variable viewing angles
    • 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
    • A61B3/1005—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for measuring distances inside the eye, e.g. thickness of the cornea
    • 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
    • A61B3/12—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes
    • A61B3/1225—Objective types, i.e. instruments for examining the eyes independent of the patients' perceptions or reactions for looking at the eye fundus, e.g. ophthalmoscopes using coherent radiation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • 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
    • A61B5/0066—Optical coherence imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
    • G01B11/2441—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures using interferometry
    • 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
    • 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
    • G01B9/02007—Two or more frequencies or sources used for interferometric measurement
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/023—Catoptric systems, e.g. image erecting and reversing system for extending or folding an optical path, e.g. delay lines
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/18—Diffraction gratings
    • G02B5/1828—Diffraction gratings having means for producing variable diffraction
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/44—Detecting, measuring or recording for evaluating the integumentary system, e.g. skin, hair or nails
    • A61B5/441—Skin evaluation, e.g. for skin disorder diagnosis
    • 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
    • G01B2290/35—Mechanical variable delay line
    • 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
    • G01B2290/45—Multiple detectors for detecting interferometer signals
    • 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
    • G01B2290/70—Using polarization in the interferometer
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B7/00—Recording or reproducing by optical means, e.g. recording using a thermal beam of optical radiation by modifying optical properties or the physical structure, reproducing using an optical beam at lower power by sensing optical properties; Record carriers therefor
    • G11B2007/0003—Recording, reproducing or erasing systems characterised by the structure or type of the carrier
    • G11B2007/0009—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage
    • G11B2007/0013—Recording, reproducing or erasing systems characterised by the structure or type of the carrier for carriers having data stored in three dimensions, e.g. volume storage for carriers having multiple discrete layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/10—Construction or shape of the optical resonator, e.g. extended or external cavity, coupled cavities, bent-guide, varying width, thickness or composition of the active region
    • H01S5/14—External cavity lasers
    • H01S5/141—External cavity lasers using a wavelength selective device, e.g. a grating or etalon

Abstract

La présente invention concerne une came (100a) constituée d'un disque à came (101a) présentant un centre (108a) autour duquel il tourne, une face périphérique diffusante (104a) épousant le contour. Cette face périphérique reçoit le rayonnement (117a) d'une source et le diffuse, produisant ainsi un rayonnement diffusé (124a). La came (100a) comporte un moteur (150a) faisant tourner le disque à came. Cette rotation soumet le rayonnement diffusé à des variations à décalage périodique respectant le contour du disque à came. Un appareil de mesure (10.1) utilisant la came (100a) est constitué d'une part d'une source (12) produisant un rayonnement caractérisé par une longueur de cohérence courte, d'autre part d'un diviseur (22) divisant le rayonnement en rayonnement de référence et rayonnement de mesure, et enfin d'une unité d'orientation (34) de rayonnement qui reçoit et oriente le rayonnement de mesure en direction d'un objet (28), puis récupère une partie du rayonnement de mesure diffusé en provenance de l'objet. La came (100a) reçoit le rayonnement de référence et diffuse une partie du rayonnement de référence restituant ainsi un rayonnement de référence diffusé. Ledit appareil de mesure (10.1) est ainsi capable de délivrer des informations concernant l'objet car il comporte un détecteur (42) détectant l'intensité résultante de la parite du rayonnement de mesure qui se trouve en interférence cohérente avec le rayonnement de référence diffusé.
PCT/US1995/006071 1994-06-02 1995-05-16 Came rotative pour systemes optiques WO1995033970A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25294094A 1994-06-02 1994-06-02
US08/252,940 1994-06-02

Publications (1)

Publication Number Publication Date
WO1995033970A1 true WO1995033970A1 (fr) 1995-12-14

Family

ID=22958177

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/006071 WO1995033970A1 (fr) 1994-06-02 1995-05-16 Came rotative pour systemes optiques

Country Status (1)

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WO (1) WO1995033970A1 (fr)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997032182A1 (fr) * 1996-02-27 1997-09-04 Massachusetts Institute Of Technology Procede et appareil permettant d'effectuer des mesures optiques a l'aide d'un endoscope, un catheter ou un fil de guidage d'imagerie a fibre optique
WO2000045153A1 (fr) * 1999-01-29 2000-08-03 June Iris Medford Microscope a coherence optique et procedes d'utilisation pour assurer la visualisation tridimensionnelle rapide in vivo de fonctions biologiques
WO2000050218A1 (fr) * 1999-02-22 2000-08-31 General Electric Company Commande en boucle fermee des vitesses des cylindres dans des operations d'extrusion de feuilles de plastique
US6191862B1 (en) 1999-01-20 2001-02-20 Lightlab Imaging, Llc Methods and apparatus for high speed longitudinal scanning in imaging systems
WO2002017775A1 (fr) * 2000-08-31 2002-03-07 Carl Zeiss Jena Gmbh Systeme de mesure sans contact de la qualite de reproduction optique d'un oeil
US6501551B1 (en) 1991-04-29 2002-12-31 Massachusetts Institute Of Technology Fiber optic imaging endoscope interferometer with at least one faraday rotator
GB2385417A (en) * 2002-03-14 2003-08-20 Taylor Hobson Ltd Determining surface profile by measurement of interference fringes
EP1814443A2 (fr) * 2004-09-21 2007-08-08 Digital Signal Corporation Systeme et procede permettant de controler a distance des fonctions physiologiques
US7385707B2 (en) 2002-03-14 2008-06-10 Taylor Hobson Limited Surface profiling apparatus
EP1962051A1 (fr) * 2007-02-21 2008-08-27 Agfa HealthCare N.V. Système et procédé destinés à la tomographie de cohérence optique
EP1962049A1 (fr) * 2007-02-21 2008-08-27 Agfa HealthCare N.V. Système et procédé destinés à la tomographie de cohérence optique
WO2008101962A1 (fr) * 2007-02-21 2008-08-28 Agfa Healthcare Nv Système et procédé de tomographie par cohérence optique
US8199327B2 (en) 2007-02-21 2012-06-12 Agfa Healthcare Nv System for optical coherence tomography
US8339610B2 (en) 2007-02-21 2012-12-25 Agfa Healthcare N.V. System and method for optical coherence tomography with spectrally modulated light injected into optical fibre
US8526006B2 (en) 2007-02-21 2013-09-03 Agfa Healthcare Nv System and method for optical coherence tomography and method for calibrating said type of system
US8593639B2 (en) 2007-02-21 2013-11-26 Agfa Healthcare Nv System and method for optical coherence tomography with light or detector modulation
US8928890B2 (en) 2007-02-21 2015-01-06 Agfa Healthcare N.V. System for optical coherence tomography with different optical properties of specimen and reference objectives
US20170343791A1 (en) * 2016-05-30 2017-11-30 Eric Swanson Few-mode fiber endoscope

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60129614A (ja) * 1983-12-19 1985-07-10 Omron Tateisi Electronics Co ポテンシヨメ−タ
US5387969A (en) * 1993-06-22 1995-02-07 Optima Industries, Inc. Machine tool position measurement employing multiple laser distance measurements

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60129614A (ja) * 1983-12-19 1985-07-10 Omron Tateisi Electronics Co ポテンシヨメ−タ
US5387969A (en) * 1993-06-22 1995-02-07 Optima Industries, Inc. Machine tool position measurement employing multiple laser distance measurements

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
APPLIED OPTICS, Volume 26, No. 9, issued 01 May 1987, TAKADA et al., "New Measurement System for Fault Location in Optical Waveguide Devices Based on an Interferometric Technique", pages 1603-1606. *

Cited By (33)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6134003A (en) * 1991-04-29 2000-10-17 Massachusetts Institute Of Technology Method and apparatus for performing optical measurements using a fiber optic imaging guidewire, catheter or endoscope
US6501551B1 (en) 1991-04-29 2002-12-31 Massachusetts Institute Of Technology Fiber optic imaging endoscope interferometer with at least one faraday rotator
WO1997032182A1 (fr) * 1996-02-27 1997-09-04 Massachusetts Institute Of Technology Procede et appareil permettant d'effectuer des mesures optiques a l'aide d'un endoscope, un catheter ou un fil de guidage d'imagerie a fibre optique
US6191862B1 (en) 1999-01-20 2001-02-20 Lightlab Imaging, Llc Methods and apparatus for high speed longitudinal scanning in imaging systems
AU779717B2 (en) * 1999-01-29 2005-02-10 Richard Campbell Haskell Optical coherence microscope and methods of use for rapid (in vivo) three-dimensional visualization of biological function
WO2000045153A1 (fr) * 1999-01-29 2000-08-03 June Iris Medford Microscope a coherence optique et procedes d'utilisation pour assurer la visualisation tridimensionnelle rapide in vivo de fonctions biologiques
WO2000050218A1 (fr) * 1999-02-22 2000-08-31 General Electric Company Commande en boucle fermee des vitesses des cylindres dans des operations d'extrusion de feuilles de plastique
US6250904B1 (en) 1999-02-22 2001-06-26 General Electric Company Closed loop control of roll speeds in plastic sheet extrusion
WO2002017775A1 (fr) * 2000-08-31 2002-03-07 Carl Zeiss Jena Gmbh Systeme de mesure sans contact de la qualite de reproduction optique d'un oeil
US7084986B2 (en) 2000-08-31 2006-08-01 Carl Zeiss Jena Gmbh System for measuring the optical image quality of an eye in a contactless manner
GB2385417A (en) * 2002-03-14 2003-08-20 Taylor Hobson Ltd Determining surface profile by measurement of interference fringes
GB2385417B (en) * 2002-03-14 2004-01-21 Taylor Hobson Ltd Surface profiling apparatus
US7385707B2 (en) 2002-03-14 2008-06-10 Taylor Hobson Limited Surface profiling apparatus
US7948634B2 (en) 2002-03-14 2011-05-24 Taylor Hobson Limited Surface profiling apparatus
EP1814443A2 (fr) * 2004-09-21 2007-08-08 Digital Signal Corporation Systeme et procede permettant de controler a distance des fonctions physiologiques
EP1814443B1 (fr) * 2004-09-21 2012-11-07 Digital Signal Corporation Systeme et procede permettant de controler a distance des fonctions physiologiques
WO2008101961A1 (fr) * 2007-02-21 2008-08-28 Agfa Healthcare Nv Système et procédé de tomographie par cohérence optique
US8593639B2 (en) 2007-02-21 2013-11-26 Agfa Healthcare Nv System and method for optical coherence tomography with light or detector modulation
WO2008101959A1 (fr) * 2007-02-21 2008-08-28 Agfa Healthcare Nv Système et procédé de tomographie par cohérence optique
EP1962049A1 (fr) * 2007-02-21 2008-08-27 Agfa HealthCare N.V. Système et procédé destinés à la tomographie de cohérence optique
US8199327B2 (en) 2007-02-21 2012-06-12 Agfa Healthcare Nv System for optical coherence tomography
EP1962051A1 (fr) * 2007-02-21 2008-08-27 Agfa HealthCare N.V. Système et procédé destinés à la tomographie de cohérence optique
US8330962B2 (en) 2007-02-21 2012-12-11 Agfa Healthcare N.V. System and method for optical coherence tomography with modulated detector sensitivity
US8339610B2 (en) 2007-02-21 2012-12-25 Agfa Healthcare N.V. System and method for optical coherence tomography with spectrally modulated light injected into optical fibre
US8526006B2 (en) 2007-02-21 2013-09-03 Agfa Healthcare Nv System and method for optical coherence tomography and method for calibrating said type of system
WO2008101962A1 (fr) * 2007-02-21 2008-08-28 Agfa Healthcare Nv Système et procédé de tomographie par cohérence optique
US8665449B2 (en) 2007-02-21 2014-03-04 Agfa Healthcare Nv System and method for optical coherence tomography
US8810797B2 (en) 2007-02-21 2014-08-19 Agfa Healthcare Nv System and method for optical coherence tomography
US8908190B2 (en) 2007-02-21 2014-12-09 Agfa Healthcare Nv System and method for focus tracking optical coherence tomography
US8928890B2 (en) 2007-02-21 2015-01-06 Agfa Healthcare N.V. System for optical coherence tomography with different optical properties of specimen and reference objectives
US20170343791A1 (en) * 2016-05-30 2017-11-30 Eric Swanson Few-mode fiber endoscope
US10969571B2 (en) * 2016-05-30 2021-04-06 Eric Swanson Few-mode fiber endoscope
US11774743B2 (en) 2016-05-30 2023-10-03 Eric Swanson Few-mode optical fiber measurement instrument

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