Leitgeb et al., 2008 - Google Patents

Complex and coherence noise free Fourier domain optical coherence tomography

Leitgeb et al., 2008

Document ID
17323478997643031359
Author
Leitgeb R
Wojtkowski M
Publication year
Publication venue
Optical Coherence Tomography: Technology and Applications

External Links

Snippet

Fourier domain optical coherence tomography (FdOCT)[1, 2] provides significant improvement in detection sensitivity and imaging speed as compared to time domain OCT [3– 5]. The delay and magnitude of backscattered or back-reflected light detected by any OCT …
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Classifications

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    • G01B9/00—Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02—Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02055—Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques
    • G01B9/02075—Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques of particular errors
    • G01B9/02078—Caused by ambiguity
    • G01B9/02079—Quadrature detection, i.e. detecting relatively phase-shifted signals
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    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B9/00—Instruments as specified in the subgroups and characterised by the use of optical measuring means
    • G01B9/02—Interferometers for determining dimensional properties of, or relations between, measurement objects
    • G01B9/02055—Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques
    • G01B9/02075—Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques of particular errors
    • G01B9/02076—Caused by motion
    • 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
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    • 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
    • G01B9/02068—Auto-alignment of optical elements
    • 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—Instruments as specified in the subgroups and characterised by the use of optical measuring means
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    • G—PHYSICS
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    • G—PHYSICS
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    • G01B9/02055—Interferometers for determining dimensional properties of, or relations between, measurement objects characterised by error reduction techniques
    • G01B9/02056—Passive error reduction, i.e. not varying during measurement, e.g. by constructional details of optics
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    • G01N21/47—Scattering, i.e. diffuse reflection
    • G01N21/4795—Scattering, i.e. diffuse reflection spatially resolved investigating of object in scattering medium
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    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • G—PHYSICS
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    • G01B2290/00—Aspects of interferometers not specifically covered by any group under G01B9/02

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