CA2173014A1 - Fiber optic diffuse light reflectance sensor - Google Patents

Fiber optic diffuse light reflectance sensor

Info

Publication number
CA2173014A1
CA2173014A1 CA002173014A CA2173014A CA2173014A1 CA 2173014 A1 CA2173014 A1 CA 2173014A1 CA 002173014 A CA002173014 A CA 002173014A CA 2173014 A CA2173014 A CA 2173014A CA 2173014 A1 CA2173014 A1 CA 2173014A1
Authority
CA
Canada
Prior art keywords
light
optical fibers
fiber optic
light reflectance
diffuse light
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
CA002173014A
Other languages
French (fr)
Other versions
CA2173014C (en
Inventor
Anthony Boiarski
Andrew Dosmann
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.)
Bayer Healthcare LLC
Original Assignee
Bayer Corp
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 Bayer Corp filed Critical Bayer Corp
Publication of CA2173014A1 publication Critical patent/CA2173014A1/en
Application granted granted Critical
Publication of CA2173014C publication Critical patent/CA2173014C/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

Abstract

A fiber optic diffuse light reflectance sensor is disclosed. The sensor employs illumination optical fibers to carry light emitted from a high-intensity, narrow bandwidth LED to a baffle in a readhead where the optical fibers reflect the light off of a reagent test strip. The illumination optical fibers are randomly oriented to create a more uniform light source. The light is reflected off of a pad on a reagent test strip to detect the presence of non-hemolyzed trace and hemolyzed occult blood. The reflected light must pass through another baffle to a bi-convex lens where it is focused onto a detection bundle of optical fibers. The detection bundle is optically coupled with a CCD, where the optical signal is converted to an electrical one for processing and analysis.
CA002173014A 1995-05-12 1996-03-29 Fiber optic diffuse light reflectance sensor Expired - Fee Related CA2173014C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US440,105 1995-05-12
US08/440,105 US5701181A (en) 1995-05-12 1995-05-12 Fiber optic diffuse light reflectance sensor utilized in the detection of occult blood

Publications (2)

Publication Number Publication Date
CA2173014A1 true CA2173014A1 (en) 1996-11-13
CA2173014C CA2173014C (en) 2005-09-13

Family

ID=23747462

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002173014A Expired - Fee Related CA2173014C (en) 1995-05-12 1996-03-29 Fiber optic diffuse light reflectance sensor

Country Status (5)

Country Link
US (1) US5701181A (en)
EP (1) EP0743514A1 (en)
JP (1) JPH08304287A (en)
AU (1) AU676656B2 (en)
CA (1) CA2173014C (en)

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Also Published As

Publication number Publication date
EP0743514A1 (en) 1996-11-20
AU5221896A (en) 1996-11-21
JPH08304287A (en) 1996-11-22
AU676656B2 (en) 1997-03-13
US5701181A (en) 1997-12-23
CA2173014C (en) 2005-09-13

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Effective date: 20080331