DE69433677D1 - Verfahren und Vorrichtung zur Messung eines streuenden Mediums - Google Patents

Verfahren und Vorrichtung zur Messung eines streuenden Mediums

Info

Publication number
DE69433677D1
DE69433677D1 DE69433677T DE69433677T DE69433677D1 DE 69433677 D1 DE69433677 D1 DE 69433677D1 DE 69433677 T DE69433677 T DE 69433677T DE 69433677 T DE69433677 T DE 69433677T DE 69433677 D1 DE69433677 D1 DE 69433677D1
Authority
DE
Germany
Prior art keywords
measuring
scattering medium
scattering
medium
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.)
Expired - Lifetime
Application number
DE69433677T
Other languages
English (en)
Other versions
DE69433677T2 (de
Inventor
Yutaka Tsuchiya
Kazuyoshi Ohta
Tsuneyuki Urakami
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.)
Hamamatsu Photonics KK
Original Assignee
Hamamatsu Photonics KK
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 Hamamatsu Photonics KK filed Critical Hamamatsu Photonics KK
Publication of DE69433677D1 publication Critical patent/DE69433677D1/de
Application granted granted Critical
Publication of DE69433677T2 publication Critical patent/DE69433677T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G01N21/49—Scattering, i.e. diffuse reflection within a body or fluid
DE69433677T 1993-12-01 1994-12-01 Verfahren und Vorrichtung zur Messung eines streuenden Mediums Expired - Lifetime DE69433677T2 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP30197993 1993-12-01
JP30197993 1993-12-01
JP08348994A JP3433508B2 (ja) 1993-12-01 1994-04-21 散乱吸収体計測方法及び散乱吸収体計測装置
JP8348994 1994-04-21

Publications (2)

Publication Number Publication Date
DE69433677D1 true DE69433677D1 (de) 2004-05-13
DE69433677T2 DE69433677T2 (de) 2005-03-24

Family

ID=26424513

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69433677T Expired - Lifetime DE69433677T2 (de) 1993-12-01 1994-12-01 Verfahren und Vorrichtung zur Messung eines streuenden Mediums

Country Status (4)

Country Link
US (1) US5640247A (de)
EP (1) EP0656536B1 (de)
JP (1) JP3433508B2 (de)
DE (1) DE69433677T2 (de)

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JP3887486B2 (ja) * 1998-05-26 2007-02-28 浜松ホトニクス株式会社 散乱吸収体の内部特性分布の計測方法及び装置
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US6404497B1 (en) 1999-01-25 2002-06-11 Massachusetts Institute Of Technology Polarized light scattering spectroscopy of tissue
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US6958815B2 (en) * 2002-03-19 2005-10-25 The Regents Of The University Of California Method and apparatus for performing quantitative analysis and imaging surfaces and subsurfaces of turbid media using spatially structured illumination
EP1514093B1 (de) 2002-06-04 2021-04-28 Visen Medical, Inc. Abbildung von volumen mit beliebigen geometrien in nichtberührenden tomographie
US7647091B2 (en) * 2003-02-05 2010-01-12 The General Hospital Corporation Method and system for free space optical tomography of diffuse media
WO2005008195A2 (en) * 2003-07-16 2005-01-27 Mcgill University Quantification of optical properties in scattering media using fractal analysis of photon distribution measurements
US7304724B2 (en) * 2004-04-13 2007-12-04 The Regents Of The University Of California Method and apparatus for quantification of optical properties of superficial volumes
JP4559386B2 (ja) * 2006-06-19 2010-10-06 株式会社日立製作所 生体光計測装置
US7688448B2 (en) * 2007-06-01 2010-03-30 University Of Utah Research Foundation Through-container optical evaluation system
JP5360540B2 (ja) * 2008-10-02 2013-12-04 公立大学法人広島市立大学 脳機能計測装置
US8301216B2 (en) * 2008-12-23 2012-10-30 The Regents Of The University Of California Method and apparatus for quantification of optical properties of superficial volumes using small source-to-detector separations
CN102883658B (zh) * 2009-11-19 2016-06-22 调节成像公司 用于使用结构化照明经由单元件检测来分析浑浊介质的方法和设备
US7884933B1 (en) * 2010-05-05 2011-02-08 Revolutionary Business Concepts, Inc. Apparatus and method for determining analyte concentrations
US9775545B2 (en) 2010-09-28 2017-10-03 Masimo Corporation Magnetic electrical connector for patient monitors
JP5710767B2 (ja) 2010-09-28 2015-04-30 マシモ コーポレイション オキシメータを含む意識深度モニタ
US20130109941A1 (en) * 2011-10-28 2013-05-02 Nellcor Puritan Bennett Llc Methods and systems for photoacoustic signal processing
FR2993446B1 (fr) * 2012-07-20 2014-07-11 Cosm O Procede de mesure et d'evaluation de caracteristiques optiques d'un materiau diffusant et son dispositif de mise en oeuvre
JP6212312B2 (ja) * 2012-08-13 2017-10-11 パナソニック株式会社 物体内部推定装置およびその方法
CN105190308B (zh) 2012-11-07 2021-05-28 调节成像公司 用于测量混浊样本的设备和方法
WO2016057553A1 (en) 2014-10-07 2016-04-14 Masimo Corporation Modular physiological sensors
US11096585B2 (en) 2018-05-04 2021-08-24 Hi Llc Non-invasive optical measurement system and method for neural decoding
US10340408B1 (en) 2018-05-17 2019-07-02 Hi Llc Non-invasive wearable brain interface systems including a headgear and a plurality of self-contained photodetector units configured to removably attach to the headgear
US10420498B1 (en) 2018-06-20 2019-09-24 Hi Llc Spatial and temporal-based diffusive correlation spectroscopy systems and methods
US11213206B2 (en) 2018-07-17 2022-01-04 Hi Llc Non-invasive measurement systems with single-photon counting camera
CA3135228A1 (en) 2019-05-06 2020-11-12 Hi Llc Photodetector architectures for time-correlated single photon counting
CN113766871A (zh) 2019-06-06 2021-12-07 Hi有限责任公司 具有低功率的时间数字转换器架构的光电检测器系统
WO2021167892A1 (en) 2020-02-21 2021-08-26 Hi Llc Wearable devices and wearable assemblies with adjustable positioning for use in an optical measurement system
US11771362B2 (en) 2020-02-21 2023-10-03 Hi Llc Integrated detector assemblies for a wearable module of an optical measurement system
WO2021167876A1 (en) 2020-02-21 2021-08-26 Hi Llc Methods and systems for initiating and conducting a customized computer-enabled brain research study
US11883181B2 (en) 2020-02-21 2024-01-30 Hi Llc Multimodal wearable measurement systems and methods
US11950879B2 (en) 2020-02-21 2024-04-09 Hi Llc Estimation of source-detector separation in an optical measurement system
US11187575B2 (en) 2020-03-20 2021-11-30 Hi Llc High density optical measurement systems with minimal number of light sources
US11245404B2 (en) 2020-03-20 2022-02-08 Hi Llc Phase lock loop circuit based signal generation in an optical measurement system
US11877825B2 (en) 2020-03-20 2024-01-23 Hi Llc Device enumeration in an optical measurement system
US11864867B2 (en) 2020-03-20 2024-01-09 Hi Llc Control circuit for a light source in an optical measurement system by applying voltage with a first polarity to start an emission of a light pulse and applying voltage with a second polarity to stop the emission of the light pulse
WO2021188487A1 (en) 2020-03-20 2021-09-23 Hi Llc Temporal resolution control for temporal point spread function generation in an optical measurement system
WO2021188486A1 (en) 2020-03-20 2021-09-23 Hi Llc Phase lock loop circuit based adjustment of a measurement time window in an optical measurement system
US11857348B2 (en) 2020-03-20 2024-01-02 Hi Llc Techniques for determining a timing uncertainty of a component of an optical measurement system
WO2021188496A1 (en) 2020-03-20 2021-09-23 Hi Llc Photodetector calibration of an optical measurement system
WO2021188485A1 (en) 2020-03-20 2021-09-23 Hi Llc Maintaining consistent photodetector sensitivity in an optical measurement system

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US5203339A (en) * 1991-06-28 1993-04-20 The Government Of The United States Of America As Represented By The Secretary Of The Department Health And Human Services Method and apparatus for imaging a physical parameter in turbid media using diffuse waves
US5277181A (en) * 1991-12-12 1994-01-11 Vivascan Corporation Noninvasive measurement of hematocrit and hemoglobin content by differential optical analysis
JP3107914B2 (ja) * 1992-07-20 2000-11-13 浜松ホトニクス株式会社 散乱吸収体内部の吸収情報計測装置及び方法

Also Published As

Publication number Publication date
JPH07209177A (ja) 1995-08-11
JP3433508B2 (ja) 2003-08-04
DE69433677T2 (de) 2005-03-24
US5640247A (en) 1997-06-17
EP0656536A1 (de) 1995-06-07
EP0656536B1 (de) 2004-04-07

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