CA2302660A1 - Compact moisture sensor with efficient, high obliquity optics - Google Patents

Compact moisture sensor with efficient, high obliquity optics Download PDF

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Publication number
CA2302660A1
CA2302660A1 CA002302660A CA2302660A CA2302660A1 CA 2302660 A1 CA2302660 A1 CA 2302660A1 CA 002302660 A CA002302660 A CA 002302660A CA 2302660 A CA2302660 A CA 2302660A CA 2302660 A1 CA2302660 A1 CA 2302660A1
Authority
CA
Canada
Prior art keywords
windshield
focuser
collimator
housing
coupler
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
CA002302660A
Other languages
French (fr)
Other versions
CA2302660C (en
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
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
Priority to CA002520651A priority Critical patent/CA2520651C/en
Publication of CA2302660A1 publication Critical patent/CA2302660A1/en
Application granted granted Critical
Publication of CA2302660C publication Critical patent/CA2302660C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H01J5/16—Optical or photographic arrangements structurally combined with the vessel
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0833—Optical rain sensor
    • B60S1/0837—Optical rain sensor with a particular arrangement of the optical elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
    • B60S1/00—Cleaning of vehicles
    • B60S1/02—Cleaning windscreens, windows or optical devices
    • B60S1/04—Wipers or the like, e.g. scrapers
    • B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
    • B60S1/08—Wipers or the like, e.g. scrapers characterised by the drive electrically driven
    • B60S1/0818—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like
    • B60S1/0822—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means
    • B60S1/0874—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield
    • B60S1/0888—Wipers or the like, e.g. scrapers characterised by the drive electrically driven including control systems responsive to external conditions, e.g. by detection of moisture, dirt or the like characterized by the arrangement or type of detection means characterized by the position of the sensor on the windshield characterized by the attachment of the elements in a unit

Abstract

Compact moisture sensor (10) mounted on inner surface (30) of windshield (18) to detect moisture on outer surface (32) and control windshield wipers (20). Includes coupler (24) having collimator (37) and focuser (42) and housing (28) detachable covering coupler. Planar circuit board (26) disposed within housing (28) includes emitters (56) and detectors (58) mounted such that the axes of emission and detection are perpendicular to windshield (18) when housing (28) is secured to coupler (24). Collimator (37) and focuser (42) are disposed adjacent emitter (56) and detector (58) such that the optical axes of collimator (37) and focuser (42) form oblique angles with respect to emission and detection axes. Two emitters and two detectors are used to form four optical paths of equal length and optical efficiency. In operation, a light beam from emitter (56) enters windshield (18) at a forty-five degree angle and is reflected back form outer surface (32) of windshield (18) to detector (59), which generates a control signal based on the amount of light reflected from the outer surface.
CA002302660A 1997-10-16 1998-10-05 Compact moisture sensor with efficient, high obliquity optics Expired - Fee Related CA2302660C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CA002520651A CA2520651C (en) 1997-10-16 1998-10-05 Compact moisture sensor with efficient, high obliquity optics

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/951,922 US5898183A (en) 1997-10-16 1997-10-16 Compact moisture sensor with efficient high obliquity optics
US08/951,922 1997-10-16
PCT/US1998/020881 WO1999021206A1 (en) 1997-10-16 1998-10-05 Compact moisture sensor with efficient, high obliquity optics

Related Child Applications (1)

Application Number Title Priority Date Filing Date
CA002520651A Division CA2520651C (en) 1997-10-16 1998-10-05 Compact moisture sensor with efficient, high obliquity optics

Publications (2)

Publication Number Publication Date
CA2302660A1 true CA2302660A1 (en) 1999-04-29
CA2302660C CA2302660C (en) 2006-07-04

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA002302660A Expired - Fee Related CA2302660C (en) 1997-10-16 1998-10-05 Compact moisture sensor with efficient, high obliquity optics

Country Status (14)

Country Link
US (1) US5898183A (en)
EP (2) EP1641013B8 (en)
JP (1) JP4191895B2 (en)
KR (1) KR100528114B1 (en)
CN (1) CN1135589C (en)
AU (1) AU735005B2 (en)
BR (1) BR9813014A (en)
CA (1) CA2302660C (en)
CZ (1) CZ302798B6 (en)
DE (2) DE69834347T2 (en)
ES (1) ES2263222T3 (en)
PL (1) PL191088B1 (en)
TR (1) TR200000965T2 (en)
WO (1) WO1999021206A1 (en)

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Also Published As

Publication number Publication date
ES2263222T3 (en) 2006-12-01
JP4191895B2 (en) 2008-12-03
CZ302798B6 (en) 2011-11-16
AU735005B2 (en) 2001-06-28
EP1641013A1 (en) 2006-03-29
CN1135589C (en) 2004-01-21
DE69834347T2 (en) 2007-05-24
WO1999021206A1 (en) 1999-04-29
US5898183A (en) 1999-04-27
EP1641013B8 (en) 2008-02-13
CN1276911A (en) 2000-12-13
CZ20001345A3 (en) 2001-01-17
PL191088B1 (en) 2006-03-31
PL339430A1 (en) 2000-12-18
BR9813014A (en) 2000-08-15
EP1641013B1 (en) 2007-12-12
DE69834347D1 (en) 2006-06-01
EP1053558B1 (en) 2006-04-26
DE69838859T2 (en) 2008-12-04
EP1053558A1 (en) 2000-11-22
AU9682998A (en) 1999-05-10
DE69838859D1 (en) 2008-01-24
CA2302660C (en) 2006-07-04
KR100528114B1 (en) 2005-11-15
KR20010024515A (en) 2001-03-26
TR200000965T2 (en) 2000-07-21
JP2001521158A (en) 2001-11-06
EP1053558A4 (en) 2004-12-15

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Effective date: 20151005