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1. WO2011032130 - NEAR REAL TIME OPTICAL PHASE CONJUGATION

Publication Number WO/2011/032130
Publication Date 17.03.2011
International Application No. PCT/US2010/048725
International Filing Date 14.09.2010
IPC
G06K 9/00 2006.01
GPHYSICS
06COMPUTING; CALCULATING OR COUNTING
KRECOGNITION OF DATA; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
9Methods or arrangements for reading or recognising printed or written characters or for recognising patterns, e.g. fingerprints
CPC
A61B 18/203
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
18by applying electromagnetic radiation, e.g. microwaves
20using laser
203applying laser energy to the outside of the body
A61B 2018/00452
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00315for treatment of particular body parts
00452Skin
A61B 2018/00642
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00636Sensing and controlling the application of energy
00642with feedback, i.e. closed loop control
A61B 2018/00779
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
18Surgical instruments, devices or methods for transferring non-mechanical forms of energy to or from the body
00636Sensing and controlling the application of energy
00773Sensed parameters
00779Power or energy
G01N 21/4795
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
21Investigating or analysing materials by the use of optical means, i.e. using infra-red, visible or ultra-violet light
17Systems in which incident light is modified in accordance with the properties of the material investigated
47Scattering, i.e. diffuse reflection
4795spatially resolved investigating of object in scattering medium
G01N 2201/0675
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2201Features of devices classified in G01N21/00
06Illumination; Optics
067Electro-optic, magneto-optic, acousto-optic elements
0675SLM
Applicants
  • BIO-RAD LABORATORIES, INC. [US]/[US] (AllExceptUS)
  • HENG, Xin [CN]/[US] (UsOnly)
Inventors
  • HENG, Xin
Agents
  • BOYD, David, W.
Priority Data
12/880,54313.09.2010US
61/242,12914.09.2009US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) NEAR REAL TIME OPTICAL PHASE CONJUGATION
(FR) CONJUGAISON DE PHASE OPTIQUE EN TEMPS QUASI RÉEL
Abstract
(EN)
An optical system and associated method enable near real time optical phase conjugation. In the method, a translucent medium is illuminated by a sample illumination beam. Light scattered by the medium is directed to an electronic image sensor while a reference beam is also directed to the electronic image sensor. The scattered light and the reference beam form an interference pattern at the electronic image sensor. A digital representation of the interference pattern is recorded using the electronic image sensor, and the characteristics of a conjugate of the sample beam are computed from the numerical representation. A conjugate beam having the computed characteristics is generated using a configurable optical element and directed back to the translucent medium. The generation of the conjugate beam may be accomplished using a spatial light modulator.
(FR)
L'invention concerne un système optique et un procédé associé permettant la conjugaison de phase optique en temps quasi réel. Dans le procédé, un milieu translucide est éclairé par un faisceau d'éclairage d'échantillon. La lumière diffusée par le milieu est dirigée vers un capteur électronique d'images, tandis qu'un faisceau de référence est également dirigé vers le capteur électronique d'images. La lumière diffusée et le faisceau de référence forment une figure d'interférence au niveau du capteur électronique d'images. Une représentation numérique de la figure d'interférence est enregistrée à l'aide du capteur électronique d'images, et les caractéristiques d'un conjugué du faisceau d'échantillon sont calculées à partir de la représentation numérique. Un faisceau conjugué présentant les caractéristiques calculées est généré à l'aide d'un élément optique configurable et redirigé vers le milieu translucide. La génération dudit faisceau conjugué peut être réalisée à l'aide d'un modulateur spatial de lumière (Spatial Light Modulator, SLM).
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