CA2229065A1 - Improved diffuse reflectance monitoring apparatus - Google Patents

Improved diffuse reflectance monitoring apparatus

Info

Publication number
CA2229065A1
CA2229065A1 CA002229065A CA2229065A CA2229065A1 CA 2229065 A1 CA2229065 A1 CA 2229065A1 CA 002229065 A CA002229065 A CA 002229065A CA 2229065 A CA2229065 A CA 2229065A CA 2229065 A1 CA2229065 A1 CA 2229065A1
Authority
CA
Canada
Prior art keywords
sections
open
reflecting
section
surface area
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.)
Granted
Application number
CA002229065A
Other languages
French (fr)
Other versions
CA2229065C (en
Inventor
Robert G. Messerschmidt
Mark Ries Robinson
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.)
Rio Grande Medical Technologies Inc
Original Assignee
Robert G. Messerschmidt
Mark Ries Robinson
Rio Grande Medical Technologies, Inc.
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 Robert G. Messerschmidt, Mark Ries Robinson, Rio Grande Medical Technologies, Inc. filed Critical Robert G. Messerschmidt
Publication of CA2229065A1 publication Critical patent/CA2229065A1/en
Application granted granted Critical
Publication of CA2229065C publication Critical patent/CA2229065C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • G01N21/474—Details of optical heads therefor, e.g. using optical fibres
    • 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
    • G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)

Abstract

An improved apparatus for diffuse re-flectance spectroscopy having a specular con-trol device. The specular control device has at least a first surface divided into an even--numbered plurality of reflecting sections (112, 114) and open or transmitting sections (116, 118). The number of reflecting sections is equal to the number of open sections. Each reflecting section is situated between a pair of open sections and opposite to another reflect-ing section. Similarly, each open section is situated between a pair of reflecting sections and is opposite to another open section. In one preferred embodiment, the total surface area of the reflecting sections is equal to the total surface area of the open sections. In an-other embodiment, the total surface area of the reflecting sections is unequal to the total sur-face area of the open sections. In another pre-ferred embodiment, opaque spacers (111, 113) are provided on the borders between adjacent sections to improve the detecting definition be-tween source and reflected beams, and to se-lectively provide (115, 117) for decreasing sur-face area of one or more selected sections.
CA002229065A 1995-08-09 1996-07-30 Improved diffuse reflectance monitoring apparatus Expired - Fee Related CA2229065C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/513,094 US5636633A (en) 1995-08-09 1995-08-09 Diffuse reflectance monitoring apparatus
US513,094 1995-08-09
PCT/US1996/012415 WO1997006425A1 (en) 1995-08-09 1996-07-30 Improved diffuse reflectance monitoring apparatus

Publications (2)

Publication Number Publication Date
CA2229065A1 true CA2229065A1 (en) 1997-02-20
CA2229065C CA2229065C (en) 2008-04-15

Family

ID=24041867

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002229065A Expired - Fee Related CA2229065C (en) 1995-08-09 1996-07-30 Improved diffuse reflectance monitoring apparatus

Country Status (8)

Country Link
US (4) US5636633A (en)
EP (1) EP0845103B1 (en)
JP (1) JP4033900B2 (en)
CN (1) CN1095990C (en)
CA (1) CA2229065C (en)
DE (1) DE69637339T2 (en)
TW (1) TW325401B (en)
WO (1) WO1997006425A1 (en)

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Also Published As

Publication number Publication date
US20010021802A1 (en) 2001-09-13
WO1997006425A1 (en) 1997-02-20
CA2229065C (en) 2008-04-15
EP0845103A4 (en) 1999-12-15
TW325401B (en) 1998-01-21
JP4033900B2 (en) 2008-01-16
DE69637339D1 (en) 2008-01-10
JPH11510602A (en) 1999-09-14
US6230034B1 (en) 2001-05-08
US5636633A (en) 1997-06-10
US6622033B2 (en) 2003-09-16
CN1095990C (en) 2002-12-11
EP0845103A1 (en) 1998-06-03
DE69637339T2 (en) 2008-10-23
EP0845103B1 (en) 2007-11-28
US5935062A (en) 1999-08-10
CN1198814A (en) 1998-11-11

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