DE3235590A1 - Device for optical detection of foreign bodies - Google Patents

Device for optical detection of foreign bodies

Info

Publication number
DE3235590A1
DE3235590A1 DE19823235590 DE3235590A DE3235590A1 DE 3235590 A1 DE3235590 A1 DE 3235590A1 DE 19823235590 DE19823235590 DE 19823235590 DE 3235590 A DE3235590 A DE 3235590A DE 3235590 A1 DE3235590 A1 DE 3235590A1
Authority
DE
Germany
Prior art keywords
optical detection
foreign bodies
photodiodes
laminated glass
glass disc
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
DE19823235590
Other languages
German (de)
Other versions
DE3235590C2 (en
Inventor
Ralf Thomas Prof Dipl Kersten
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.)
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
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 Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Forderung der Angewandten Forschung eV
Priority to DE19823235590 priority Critical patent/DE3235590C2/en
Publication of DE3235590A1 publication Critical patent/DE3235590A1/en
Application granted granted Critical
Publication of DE3235590C2 publication Critical patent/DE3235590C2/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • 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
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/94—Investigating contamination, e.g. dust
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/12—Detecting, e.g. by using light barriers using one transmitter and one receiver
    • G01V8/14—Detecting, e.g. by using light barriers using one transmitter and one receiver using reflectors

Landscapes

  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Geophysics (AREA)
  • Health & Medical Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

A device for optical detection of foreign bodies on the surface (8) of a laminated glass disc (1, 2) has an optotransmitter (15), arranged at the lateral rim (4), and two photodiodes (5, 6) coupled to the opposite rim (7) of the discs (1, 2) of the laminated glass disc. The currents in the photodiodes (5, 6) and their ratio are a measure of the dirt particles (13) and water droplets (11) present on the glass surface (8). <IMAGE>
DE19823235590 1982-09-25 1982-09-25 Device for the optical detection of foreign bodies Expired DE3235590C2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19823235590 DE3235590C2 (en) 1982-09-25 1982-09-25 Device for the optical detection of foreign bodies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19823235590 DE3235590C2 (en) 1982-09-25 1982-09-25 Device for the optical detection of foreign bodies

Publications (2)

Publication Number Publication Date
DE3235590A1 true DE3235590A1 (en) 1984-03-29
DE3235590C2 DE3235590C2 (en) 1984-11-22

Family

ID=6174179

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19823235590 Expired DE3235590C2 (en) 1982-09-25 1982-09-25 Device for the optical detection of foreign bodies

Country Status (1)

Country Link
DE (1) DE3235590C2 (en)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528009A1 (en) * 1985-08-05 1987-02-05 Richter Hans Juergen Dr Automatically operating device for monitoring the transparency of panes
WO1987007023A1 (en) * 1986-05-05 1987-11-19 Hughes Aircraft Company Self contained surface contamination sensor
DE3715798A1 (en) * 1987-05-12 1988-01-07 Erich Ing Grad Huber Optoelectronic device for detecting the polluting (fouling) of transparent protective panes and initiating the cleaning measures
DE3941905A1 (en) * 1988-12-19 1990-06-21 Fujitsu Ten Ltd WINDOW WIPER CONTROL DEVICE
FR2672124A1 (en) * 1991-01-25 1992-07-31 Thomson Csf METHOD AND DEVICE FOR CONTROLLING THE SURFACE CONDITION OF AN OPTICAL LIGHT TRANSMISSION ELEMENT
DE4229384A1 (en) * 1991-09-16 1993-03-18 Peter Lisec ARRANGEMENT FOR TESTING THE SEALING OF INSULATING GLASS PANELS
DE9309837U1 (en) * 1993-07-02 1993-09-02 Reime, Gerd, 75328 Schömberg Arrangement for measuring or detecting the wetting of a wall or plate which is permeable to a specific radiation
DE4329188A1 (en) * 1992-09-04 1994-03-17 Steinbacher Peter Dipl Ing Fh Optical sensor for interval control of vehicle windscreen wiper - directs light beam into internal face of windscreen acting as waveguide using TIR, and detects light reflected by rain drop and refracted into air at internal face towards sensor
DE4305195C1 (en) * 1993-02-19 1994-06-30 Schlueter Fotosensorik Gmbh & Light sensor for detecting and counting presence of objects
US5666037A (en) * 1993-07-02 1997-09-09 Reime; Gerd Arrangement for measuring or detecting a change in a retro-reflective element
US5726547A (en) * 1993-07-02 1998-03-10 Reime; Gerd Windshield wiper arrangement including wiper control system
DE10339696A1 (en) * 2003-08-28 2005-04-07 Siemens Ag Vehicle windscreen rain drop detector has light source coupling light into outer edge of screen with total internal reflection propagation observed by camera using reference comparison image
WO2006051028A1 (en) * 2004-11-11 2006-05-18 Robert Bosch Gmbh Optical sensor for detecting moisture on a glass pane of a motor vehicle

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10000290A1 (en) * 2000-01-07 2001-07-19 Hella Kg Hueck & Co Headlamp, especially motor vehicle headlamp, has light receiver connected to event-driven electronic filter unit with external control inputs, control outputs to display unit and cleaning device
DE10203300C1 (en) * 2002-01-24 2003-05-28 Univ Dresden Tech Detection of adhesive particles on materials or in suspension, sticks them to transparent substrate where they interfere with process of total internal reflection
DE10351254A1 (en) * 2003-11-03 2005-06-02 Adc Automotive Distance Control Systems Gmbh Apparatus for detecting soiling on a translucent cover in front of an optical unit
DE102007003023B4 (en) 2007-01-20 2009-05-07 Sick Ag Optoelectronic sensor and method for light transmission test of the protective glass by total reflection
DE102019118677A1 (en) * 2019-07-10 2021-01-14 Valeo Schalter Und Sensoren Gmbh Visual representation of computer-generated information in a motor vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NICHTS-ERMITTELT *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3528009A1 (en) * 1985-08-05 1987-02-05 Richter Hans Juergen Dr Automatically operating device for monitoring the transparency of panes
WO1987007023A1 (en) * 1986-05-05 1987-11-19 Hughes Aircraft Company Self contained surface contamination sensor
US4808813A (en) * 1986-05-05 1989-02-28 Hughes Aircraft Company Self contained surface contamination sensor for detecting external particulates and surface discontinuities
DE3715798A1 (en) * 1987-05-12 1988-01-07 Erich Ing Grad Huber Optoelectronic device for detecting the polluting (fouling) of transparent protective panes and initiating the cleaning measures
DE3941905A1 (en) * 1988-12-19 1990-06-21 Fujitsu Ten Ltd WINDOW WIPER CONTROL DEVICE
FR2672124A1 (en) * 1991-01-25 1992-07-31 Thomson Csf METHOD AND DEVICE FOR CONTROLLING THE SURFACE CONDITION OF AN OPTICAL LIGHT TRANSMISSION ELEMENT
EP0497649A1 (en) * 1991-01-25 1992-08-05 Thomson-Csf Method and device for testing the surface condition of a light transmitting optical element
DE4229384A1 (en) * 1991-09-16 1993-03-18 Peter Lisec ARRANGEMENT FOR TESTING THE SEALING OF INSULATING GLASS PANELS
DE4329188A1 (en) * 1992-09-04 1994-03-17 Steinbacher Peter Dipl Ing Fh Optical sensor for interval control of vehicle windscreen wiper - directs light beam into internal face of windscreen acting as waveguide using TIR, and detects light reflected by rain drop and refracted into air at internal face towards sensor
DE4305195C1 (en) * 1993-02-19 1994-06-30 Schlueter Fotosensorik Gmbh & Light sensor for detecting and counting presence of objects
DE9309837U1 (en) * 1993-07-02 1993-09-02 Reime, Gerd, 75328 Schömberg Arrangement for measuring or detecting the wetting of a wall or plate which is permeable to a specific radiation
US5666037A (en) * 1993-07-02 1997-09-09 Reime; Gerd Arrangement for measuring or detecting a change in a retro-reflective element
US5726547A (en) * 1993-07-02 1998-03-10 Reime; Gerd Windshield wiper arrangement including wiper control system
DE10339696A1 (en) * 2003-08-28 2005-04-07 Siemens Ag Vehicle windscreen rain drop detector has light source coupling light into outer edge of screen with total internal reflection propagation observed by camera using reference comparison image
DE10339696B4 (en) * 2003-08-28 2007-12-27 Siemens Ag Device for detecting objects on a transparent wall, in particular raindrops on a windshield
WO2006051028A1 (en) * 2004-11-11 2006-05-18 Robert Bosch Gmbh Optical sensor for detecting moisture on a glass pane of a motor vehicle

Also Published As

Publication number Publication date
DE3235590C2 (en) 1984-11-22

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Legal Events

Date Code Title Description
OP8 Request for examination as to paragraph 44 patent law
8125 Change of the main classification

Ipc: G01M 11/00

D2 Grant after examination
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee