GB0419383D0 - Transmissive scanning delay line for oct - Google Patents

Transmissive scanning delay line for oct

Info

Publication number
GB0419383D0
GB0419383D0 GB0419383A GB0419383A GB0419383D0 GB 0419383 D0 GB0419383 D0 GB 0419383D0 GB 0419383 A GB0419383 A GB 0419383A GB 0419383 A GB0419383 A GB 0419383A GB 0419383 D0 GB0419383 D0 GB 0419383D0
Authority
GB
United Kingdom
Prior art keywords
delay line
scanning delay
scanning
oct
tilt mirror
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
GB0419383A
Other versions
GB2417789A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
OTI OPHTHALMIC TECHNOLOGIES
Original Assignee
OTI OPHTHALMIC TECHNOLOGIES
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 OTI OPHTHALMIC TECHNOLOGIES filed Critical OTI OPHTHALMIC TECHNOLOGIES
Priority to GB0419383A priority Critical patent/GB2417789A/en
Publication of GB0419383D0 publication Critical patent/GB0419383D0/en
Priority to GB0513773A priority patent/GB0513773D0/en
Priority to EP05787149.3A priority patent/EP1789832B1/en
Priority to US11/216,403 priority patent/US7417741B2/en
Priority to PCT/CA2005/001314 priority patent/WO2006024152A1/en
Publication of GB2417789A publication Critical patent/GB2417789A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • 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]
    • 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
    • G01B9/0201—Interferometers characterised by controlling or generating intrinsic radiation properties using temporal phase variation
    • 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
    • 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
    • G01B2290/20—Dispersive element for generating dispersion
    • 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
    • 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
    • G01N2021/178—Methods for obtaining spatial resolution of the property being measured
    • G01N2021/1785—Three dimensional
    • G01N2021/1787—Tomographic, i.e. computerised reconstruction from projective measurements

Abstract

A scanning delay line, an apparatus for optical coherence tomography (OCT) and a method of scanning an optical path difference. A scanning delay line for an interferometer comprising an input aperture and an output aperture different from said input aperture, a dispersive element 2, an optical element 3 and a controllable tilt mirror 4. The scanning delay line is configured to let the incident light traverse the dispersive element twice, traverse the optical element four times and be reflected twice from the tilt mirror. The tilting of the tilt mirror results in scanning of the optical path. The scanning delay line can have additional mirrors for redirection of the light. The apparatus incorporates the scanning delay line.
GB0419383A 2004-09-01 2004-09-01 Scanning delay line for interferometer Withdrawn GB2417789A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB0419383A GB2417789A (en) 2004-09-01 2004-09-01 Scanning delay line for interferometer
GB0513773A GB0513773D0 (en) 2004-09-01 2005-07-06 Transmissive scanning delay line for OCT
EP05787149.3A EP1789832B1 (en) 2004-09-01 2005-08-31 Transmissive scanning delay line for oct
US11/216,403 US7417741B2 (en) 2004-09-01 2005-08-31 Transmissive scanning delay line for optical coherence tomography
PCT/CA2005/001314 WO2006024152A1 (en) 2004-09-01 2005-08-31 Transmissive scanning delay line for oct

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0419383A GB2417789A (en) 2004-09-01 2004-09-01 Scanning delay line for interferometer

Publications (2)

Publication Number Publication Date
GB0419383D0 true GB0419383D0 (en) 2004-10-06
GB2417789A GB2417789A (en) 2006-03-08

Family

ID=33155831

Family Applications (2)

Application Number Title Priority Date Filing Date
GB0419383A Withdrawn GB2417789A (en) 2004-09-01 2004-09-01 Scanning delay line for interferometer
GB0513773A Ceased GB0513773D0 (en) 2004-09-01 2005-07-06 Transmissive scanning delay line for OCT

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0513773A Ceased GB0513773D0 (en) 2004-09-01 2005-07-06 Transmissive scanning delay line for OCT

Country Status (1)

Country Link
GB (2) GB2417789A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9163929B2 (en) * 2012-08-23 2015-10-20 Samsung Electronics Co., Ltd. Tomographic image generation apparatus having modulation and correction device and method of operating the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6111645A (en) * 1991-04-29 2000-08-29 Massachusetts Institute Of Technology Grating based phase control optical delay line
US6615072B1 (en) * 1999-02-04 2003-09-02 Olympus Optical Co., Ltd. Optical imaging device
AU2002240155A1 (en) * 2001-01-29 2002-09-19 Joseph A. Izatt Frequency-encoded parallel oct and associated systems and methods
US7061622B2 (en) * 2001-08-03 2006-06-13 Case Western Reserve University Aspects of basic OCT engine technologies for high speed optical coherence tomography and light source and other improvements in optical coherence tomography

Also Published As

Publication number Publication date
GB2417789A (en) 2006-03-08
GB0513773D0 (en) 2005-08-10

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)