CA2227409C - Detecteur compact d'humidite muni de lentilles de collimation et d'un coupleur prismatique - Google Patents

Detecteur compact d'humidite muni de lentilles de collimation et d'un coupleur prismatique Download PDF

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Publication number
CA2227409C
CA2227409C CA002227409A CA2227409A CA2227409C CA 2227409 C CA2227409 C CA 2227409C CA 002227409 A CA002227409 A CA 002227409A CA 2227409 A CA2227409 A CA 2227409A CA 2227409 C CA2227409 C CA 2227409C
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CA
Canada
Prior art keywords
detector
emitter
light beams
coupler
angle
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 - Fee Related
Application number
CA002227409A
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English (en)
Other versions
CA2227409A1 (fr
Inventor
Rein S. Teder
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.)
Pilkington North America Inc
Original Assignee
Libbey Owens Ford Co
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
Priority claimed from US08/653,546 external-priority patent/US5661303A/en
Application filed by Libbey Owens Ford Co filed Critical Libbey Owens Ford Co
Publication of CA2227409A1 publication Critical patent/CA2227409A1/fr
Application granted granted Critical
Publication of CA2227409C publication Critical patent/CA2227409C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • G01N21/41—Refractivity; Phase-affecting properties, e.g. optical path length
    • G01N21/43—Refractivity; Phase-affecting properties, e.g. optical path length by measuring critical angle

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  • 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)

Abstract

L'invention concerne un détecteur compact (10) de pluie, muni de lentilles de collimation (64, 66) et d'un coupleur prismatique amovible (38), destiné à être monté sur la surface intérieure (30) d'un pare-brise (18); cette disposition facilite le montage d'émetteurs (56) et de capteurs (58) de rayons infrarouge sur une plaquette de circuit (26), disposée parallèlement à la surface intérieure du pare-brise et également munie d'un circuit (80 A-D) de traitement de signaux. Un mince coupleur optique est fixé au pare-brise par adhésion; aux bords extérieurs du coupleur est fixé le boîtier amovible (28) du détecteur.
CA002227409A 1996-05-24 1997-05-20 Detecteur compact d'humidite muni de lentilles de collimation et d'un coupleur prismatique Expired - Fee Related CA2227409C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/653,546 US5661303A (en) 1996-05-24 1996-05-24 Compact moisture sensor with collimator lenses and prismatic coupler
US653,546 1996-05-24
PCT/US1997/008929 WO1997044648A1 (fr) 1996-05-24 1997-05-20 Detecteur compact d'humidite muni de lentilles de collimation et d'un coupleur prismatique

Publications (2)

Publication Number Publication Date
CA2227409A1 CA2227409A1 (fr) 1997-11-27
CA2227409C true CA2227409C (fr) 2006-08-01

Family

ID=36764301

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002227409A Expired - Fee Related CA2227409C (fr) 1996-05-24 1997-05-20 Detecteur compact d'humidite muni de lentilles de collimation et d'un coupleur prismatique

Country Status (1)

Country Link
CA (1) CA2227409C (fr)

Also Published As

Publication number Publication date
CA2227409A1 (fr) 1997-11-27

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