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1. (EP2436307) Speckle reduction in optical coherence tomography by path length encoded angular compounding

Office : European Patent Office (EPO)
Application Number: 11188120 Application Date: 31.03.2004
Publication Number: 2436307 Publication Date: 04.04.2012
Publication Kind : B1
IPC:
A61B 5/00
G01B 9/02
G01J 9/02
G01N 21/47
G02B 27/48
A HUMAN NECESSITIES
61
MEDICAL OR VETERINARY SCIENCE; HYGIENE
B
DIAGNOSIS; SURGERY; IDENTIFICATION
5
Measuring for diagnostic purposes; Identification of persons
G PHYSICS
01
MEASURING; TESTING
B
MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
9
Instruments as specified in the subgroups and characterised by the use of optical measuring means
02
Interferometers
G PHYSICS
01
MEASURING; TESTING
J
MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRA-RED, VISIBLE OR ULTRA-VIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
9
Measuring optical phase difference; Determining degree of coherence; Measuring optical wavelength
02
by interferometric methods
G PHYSICS
01
MEASURING; TESTING
N
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21
Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible, or ultra-violet light
17
Systems in which incident light is modified in accordance with the properties of the material investigated
47
Scattering, i.e. diffuse reflection
G PHYSICS
02
OPTICS
B
OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
27
Other optical systems; Other optical apparatus
48
Laser speckle optics
Applicants:
Inventors:
Priority Data: 04749658 31.03.2004 EP
45954303 31.03.2003 US
47660003 06.06.2003 US
51476903 27.10.2003 US
Title: (DE) Fleckenreduzierung bei der optischen Kohärenztomografie durch pfadlängencodierte Winkelmischung
(EN) Speckle reduction in optical coherence tomography by path length encoded angular compounding
(FR) Réduction des taches dans la tomographie de cohérence optique par combinaison angulaire codée pour la longueur de chemin
Abstract: front page image
(EN) Apparatus for irradiating a sample, comprising an interferometer forwarding an electromagnetic radiation and a sample arm receiving the electromagnetic radiation, wherein the sample arm includes an arrangement which is configured to produce at least two radiations from the electromagnetic radiation so as to irradiate the sample, and to delay a first radiation of the at least two radiations with respect to a second radiation of the at least two radiations.