CA2213482A1 - Fluorescent optical sensor - Google Patents

Fluorescent optical sensor

Info

Publication number
CA2213482A1
CA2213482A1 CA002213482A CA2213482A CA2213482A1 CA 2213482 A1 CA2213482 A1 CA 2213482A1 CA 002213482 A CA002213482 A CA 002213482A CA 2213482 A CA2213482 A CA 2213482A CA 2213482 A1 CA2213482 A1 CA 2213482A1
Authority
CA
Canada
Prior art keywords
photodetector
analyte
indicator
amount
layer
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
CA002213482A
Other languages
French (fr)
Other versions
CA2213482C (en
Inventor
Arthur E. Colvin, Jr.
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2213482A1 publication Critical patent/CA2213482A1/en
Application granted granted Critical
Publication of CA2213482C publication Critical patent/CA2213482C/en
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
    • G01N21/62—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light
    • G01N21/63—Systems in which the material investigated is excited whereby it emits light or causes a change in wavelength of the incident light optically excited
    • G01N21/64—Fluorescence; Phosphorescence
    • G01N21/6428—Measuring fluorescence of fluorescent products of reactions or of fluorochrome labelled reactive substances, e.g. measuring quenching effects, using measuring "optrodes"
    • 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
    • G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
    • 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
    • G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
    • G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
    • G01N2021/7769—Measurement method of reaction-produced change in sensor
    • G01N2021/7786—Fluorescence

Abstract

A fluorescent sensor (10) for detecting the presence and amount of an analyte. The fluorescent sensor (10) has a photodetector (12), a high pass filter (14) located adjacent the photodetector (12), and a glass layer (80) located adjacent the high pass filter (14).
An indicator layer (18) is located adjacent the glass layer (80) and a light emitting diode (20) is embedded in the indicator layer. The indicator layer has indicator molecules that provide a fluorescent emission as a result of light from the light emitting diode (20). The indicator layer (18) also allows an analyte to diffuse into it and the presence of the analyte reduces the amount of light emitted from the indicator molecules that passes through the glass layer (80) and the high pass filter (14) and is incident upon the photodetector (12).
Since the amount of current from the photodetector (12) depends upon the incident light, this is used to detect the presence and amount of analyte. In one embodiment a waveguide is also present.
CA002213482A 1995-02-21 1996-02-15 Fluorescent optical sensor Expired - Lifetime CA2213482C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/393,166 US5517313A (en) 1995-02-21 1995-02-21 Fluorescent optical sensor
US08/393,166 1995-02-21
PCT/US1996/002325 WO1996026429A1 (en) 1995-02-21 1996-02-15 Fluorescent optical sensor

Publications (2)

Publication Number Publication Date
CA2213482A1 true CA2213482A1 (en) 1996-08-29
CA2213482C CA2213482C (en) 2002-01-08

Family

ID=23553559

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002213482A Expired - Lifetime CA2213482C (en) 1995-02-21 1996-02-15 Fluorescent optical sensor

Country Status (14)

Country Link
US (1) US5517313A (en)
EP (1) EP0811154B1 (en)
JP (1) JP3638611B2 (en)
KR (1) KR100355905B1 (en)
CN (1) CN1098456C (en)
AT (1) ATE294380T1 (en)
CA (1) CA2213482C (en)
DE (1) DE69634660T2 (en)
DK (1) DK0811154T3 (en)
ES (1) ES2240991T3 (en)
FI (1) FI117683B (en)
NO (1) NO325071B1 (en)
PT (1) PT811154E (en)
WO (1) WO1996026429A1 (en)

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Also Published As

Publication number Publication date
NO973761L (en) 1997-10-17
PT811154E (en) 2005-09-30
AU4989796A (en) 1996-09-11
EP0811154B1 (en) 2005-04-27
WO1996026429A1 (en) 1996-08-29
CN1098456C (en) 2003-01-08
KR19980702404A (en) 1998-07-15
FI117683B (en) 2007-01-15
FI973405A0 (en) 1997-08-20
US5517313A (en) 1996-05-14
MX9706360A (en) 1998-07-31
JP3638611B2 (en) 2005-04-13
DE69634660T2 (en) 2006-03-16
JPH11500825A (en) 1999-01-19
DK0811154T3 (en) 2005-08-22
NO325071B1 (en) 2008-01-28
AU693007B2 (en) 1998-06-18
CN1178006A (en) 1998-04-01
ATE294380T1 (en) 2005-05-15
CA2213482C (en) 2002-01-08
FI973405A (en) 1997-08-20
DE69634660D1 (en) 2005-06-02
EP0811154A4 (en) 1998-09-16
ES2240991T3 (en) 2005-10-16
EP0811154A1 (en) 1997-12-10
KR100355905B1 (en) 2002-11-18
NO973761D0 (en) 1997-08-15

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