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EP2446701A1 - Pare-brise avec réseau de capteurs optiquement transparent et pouvant être chauffé - Google Patents

Pare-brise avec réseau de capteurs optiquement transparent et pouvant être chauffé

Info

Publication number
EP2446701A1
EP2446701A1 EP10726957A EP10726957A EP2446701A1 EP 2446701 A1 EP2446701 A1 EP 2446701A1 EP 10726957 A EP10726957 A EP 10726957A EP 10726957 A EP10726957 A EP 10726957A EP 2446701 A1 EP2446701 A1 EP 2446701A1
Authority
EP
European Patent Office
Prior art keywords
heatable
optically transparent
film
sensor array
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.)
Withdrawn
Application number
EP10726957A
Other languages
German (de)
English (en)
Inventor
Emily Bressand
Ilkay Arslan
Dirk Wohlfeil
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.)
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
Original Assignee
Saint Gobain Glass France SAS
Compagnie de Saint Gobain SA
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 Saint Gobain Glass France SAS, Compagnie de Saint Gobain SA filed Critical Saint Gobain Glass France SAS
Publication of EP2446701A1 publication Critical patent/EP2446701A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/84—Heating arrangements specially adapted for transparent or reflecting areas, e.g. for demisting or de-icing windows, mirrors or vehicle windshields
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R11/04—Mounting of cameras operative during drive; Arrangement of controls thereof relative to the vehicle
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
    • G01J1/00—Photometry, e.g. photographic exposure meter
    • G01J1/02—Details
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • H05B3/26—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base
    • H05B3/265—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor mounted on insulating base the insulating base being an inorganic material, e.g. ceramic
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/54—Heating elements having the shape of rods or tubes flexible
    • H05B3/56—Heating cables
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R11/00—Arrangements for holding or mounting articles, not otherwise provided for
    • B60R2011/0001—Arrangements for holding or mounting articles, not otherwise provided for characterised by position
    • B60R2011/0003—Arrangements for holding or mounting articles, not otherwise provided for characterised by position inside the vehicle
    • B60R2011/0026—Windows, e.g. windscreen
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49002—Electrical device making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49826—Assembling or joining

Definitions

  • the invention relates to a disk with heatable, optically transparent sensor array, a process for their preparation and their use.
  • optical sensors are camera systems, such as video cameras, night vision cameras, residual light amplifiers or passive infrared detectors such as FLIR (Forward Looking Infrared).
  • the camera systems can use light in the ultraviolet (UV), visible (VIS) and infrared (IR) wavelength ranges. This makes it possible to detect objects, vehicles and people precisely even in bad weather conditions, such as darkness and fog.
  • UV ultraviolet
  • VIS visible
  • IR infrared
  • These camera systems can be placed in motor vehicles behind the windshield in the passenger compartment. Thus, they also offer the opportunity to recognize dangerous situations and obstacles in time on the road.
  • EDM electronic distance measurement
  • the distance to other vehicles can be determined.
  • Such systems are widely used in the military field of application, but also in the civil sector, many applications.
  • the required safety distance can be determined and the traffic safety significantly increased.
  • Automatic warning systems significantly reduce the risk of rear-end collisions.
  • the sensor can either be mounted inside a vehicle or outside it like helicopter thermal imaging cameras. Here, the sensor is mounted in a pivotable housing on the outside of the helicopter. To ensure optimum function of the optical sensors are both ways clean and fog-free panes absolutely necessary. Fogging and icing hinder the operation significantly, since they significantly reduce the transmission of electromagnetic radiation. While wiper systems can be used for water droplets and dirt particles, they are generally insufficient for icing. In this case, systems are necessary which, if necessary, at least temporarily heat up the pane segment assigned to the sensor and thus permit uninterrupted use. In order to keep the energy consumption and the required voltage low, only the required field of view of the disc for the sensor should be heated in this way.
  • the inner pane In addition to the outer pane surface, above all, the inner pane must be kept free of fogging. So that no dirt and dust particles pollute the sensor, the arrangement of sensor and disk is usually encapsulated. If moisture penetrates into this encapsulated space, this moisture can condense on the inside of the pane, especially in cold outside temperatures, and restrict the functionality of the sensor.
  • DE 101 56 850 A1 discloses a sensor in a vehicle window pane, the lens of which is closed off from the vehicle interior by an encapsulation. This structure prevents the deposition of dust particles on the lens. For air exchange a particle filter is provided.
  • DE 10 2004 054 161 A1 discloses an infrared light detection area in a vehicle windshield.
  • the infrared light detection area is surrounded by heating elements that keep it free of ice and fog by heat conduction.
  • EP 1 605 729 A2 discloses an electrically heatable pane with a camera window. This camera window is kept fog and ice-free via a heater.
  • the heating element is laminated into the pane at the position of the camera window.
  • an additional heating element can be attached to the window surface.
  • the additional heating element is preferably printed as a conductive paste on the wafer surface.
  • the object of the invention is to provide a disk with heatable, optically transparent sensor array, which is easy to manufacture from finished, standard discs without major reconstruction measures.
  • the object of the present invention is fiction, solved by a disc with heatable, optically transparent sensor array, a process for their preparation and their use according to the independent claims 1, 14 and 15. Preferred embodiments will become apparent from the dependent claims.
  • the disk with heatable, optically transparent sensor field comprises at least one disk and at least one optically transparent sensor field.
  • the term “optically transparent sensor array” includes the portion of the disc which supplies the sensor with the appropriate optical and electromagnetic information or signals, which may be any part of the disc or segment of disc used for the corresponding optical and electromagnetic fields
  • the term “optically transparent” in the context of the invention refers to the wavelength range from 200 nm to 2000 nm, preferably 400 nm to 1300 nm.
  • the transmission is in the wavelength range from 400 nm to 1300 nm, preferably more than 70%.
  • the optically transparent sensor field preferably occupies less than 10%, more preferably less than 5%, of the disk surface.
  • the heatable film arranged on the optically transparent sensor field comprises at least one carrier film, a heatable coating, printed conductors (for example screen printing or inkjet printing), meshes (for example a copper coating structured by etching) and / or heating wires and one on the heatable Coating printed conductors, meshes and / or the electrical wires attached to the heating wires.
  • the heatable coating printed conductors, meshes and / or the heating wires can be mounted in the sense of the invention both on the side of the carrier foil facing the disc and on the side of the carrier foil facing away from the disc.
  • the carrier film preferably has a thickness of from 20 ⁇ m to 500 ⁇ m, more preferably from 30 ⁇ m to 200 ⁇ m.
  • the heated coating, printed conductors, meshes and / or heating wires act as electrical resistors and are mounted directly on the foil.
  • the layer thickness or wire thickness depends on the required heating power.
  • the heating wires preferably have a thickness of 10 .mu.m to 100 .mu.m
  • the electrical coating preferably has a sheet resistance of 0.5 ohms per square to 3 ohms per square, at a voltage of 12 V to 15 V.
  • the average transmission of the entire array of sensor field and heatable film is preferably more than 60%, more preferably more than 70%.
  • An encapsulation and a sensor mounted in the encapsulation are attached to the optically transparent sensor field and the heatable film.
  • the encapsulation protects the sensor from dirt and dust particles and unwanted light.
  • the encapsulation is preferably arranged in the upper pane area, preferably not more than 30% of the slice height from the upper and / or lower edge.
  • the encapsulation preferably contains a polymer, more preferably polybutylene terephthalate, polyamides, polycarbonate, polyurethanes, polybutylene, polypropylene, polyethylene, polyethylene terephthalate, polyvinyl chloride, polystyrene, acrylonitrile-butadiene-styrene, ethylene vinyl acetate, ethylene vinyl alcohol, polyimides, polyesters, polyketones, polyetheretherketones and / or
  • Polymethylmethacrylate and mixtures, block polymers and copolymers thereof are Polymethylmethacrylate and mixtures, block polymers and copolymers thereof.
  • the sensor preferably comprises cameras for visible light of the wavelengths of 400 nm to 800 nm and infrared light of the wavelengths of 800 nm to 1300 nm.
  • the pane preferably contains glass and / or polymers, preferably flat glass, float glass, quartz glass, borosilicate glass, soda lime glass, polymethyl methacrylate and / or mixtures thereof.
  • the pane preferably comprises single-pane safety glass (ESG) or laminated safety glass (VSG).
  • the sensor field preferably has an optical transparency for visible light (VIS) and / or infrared radiation (IR) of> 60%, preferably> 70%.
  • VIS visible light
  • IR infrared radiation
  • the sensor field preferably has an opaque and / or colored edge.
  • the edge can be formed both as a border strip or as a border area.
  • the carrier film preferably contains polybutylene terephthalate (PBT), polycarbonate (PC), polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polyvinyl butyral (PVB) and / or poly-ethyl vinyl acetate (EVA) and / or mixtures and / or copolymers thereof.
  • PBT polybutylene terephthalate
  • PC polycarbonate
  • PET polyethylene terephthalate
  • PEN polyethylene naphthalate
  • PVB polyvinyl butyral
  • EVA poly-ethyl vinyl acetate
  • the carrier film preferably has an optical transparency for visible light (VIS) and / or infrared radiation (IR) of> 80%, particularly preferably> 90%.
  • VIS visible light
  • IR infrared radiation
  • the heatable coating and / or the heating wires preferably contain fluorine-doped tin dioxide (FiSnO 2 ), tin-doped indium oxide (ITO), silver, copper, tin, gold, aluminum, iron, tungsten, chromium or alloys thereof and / or at least one electrically conductive one organic polymer.
  • FESnO 2 fluorine-doped tin dioxide
  • ITO tin-doped indium oxide
  • silver copper, tin, gold, aluminum, iron, tungsten, chromium or alloys thereof and / or at least one electrically conductive one organic polymer.
  • the heatable coating preferably has a layer thickness of 0.1 .mu.m to 50 .mu.m, more preferably 1 .mu.m to 10 .mu.m.
  • the electrical contacting preferably contains silver, copper, tin, gold, aluminum, iron, tungsten, chromium or alloys thereof and / or at least one electrically conductive organic polymer.
  • the heatable film preferably contains an optically transparent, antistatic, water-absorbing, hydrophilic, hydrophobic or lipophobic and hydrophobic Coating.
  • hydrophilic coatings of polyester films can be found in EP 1 777 251 A1.
  • Coating solutions for hydrophilic coatings contain, for example, sulfopolyesters of 90 mol% isophthalic acid and 10 mol% sodium sulfoisophthalic acid and a surfactant such as diethylhexyl sulfosuccinate sodium salt (AOT) with in each case 1% by weight to 5% by weight.
  • AOT diethylhexyl sulfosuccinate sodium salt
  • Coatings with halogenated hydrocarbons make possible a lipophobic, fat or nonpolar hydrocarbon-repellent as well as hydrophobic, water-repellent coating.
  • Water-absorbing coatings contain, for example, swellable hydrophilic polymers such as polysaccharides, cellulose derivatives and polyethylene oxides.
  • the heatable film preferably comprises an adhesive, more preferably acrylate adhesives, methyl methacrylate adhesives, cyanoacrylate adhesives, polyepoxides, silicone adhesives and / or silane-crosslinking polymer adhesives, and mixtures and / or copolymers thereof.
  • the heatable film preferably contains a self-adhesive film.
  • the encapsulation is preferably mounted in the upper region of the windshield and / or rear window, particularly preferably behind a cover strip, sun visor and / or band filter.
  • a recess for the optically transparent sensor array is preferably arranged.
  • the encapsulation preferably contains water-absorbing materials or desiccants, particularly preferably silica gel, CaCl 2 , Na 2 SO 4 , activated carbon, silicates, bentonites, zeolites and / or mixtures thereof.
  • the desiccants may be incorporated into the surface of the encapsulant and / or placed in open containers in the encapsulant.
  • the desiccants are preferably arranged so that air and moisture exchange with the air inside the encapsulation is possible, but the materials can not fly around and are fixed. This can preferably be done by enclosing the desiccant in an air and moisture-permeable polymer film or in a fine-meshed network.
  • the invention further includes a method for producing a pane with heatable optically transparent sensor array.
  • the carrier film is provided in a first step with a heatable coating, printed conductors, meshes and / or heating wires.
  • the obtained heatable film is mounted on a sensor field of a disc.
  • the attachment of the heatable film is preferably carried out as a self-adhesive film or with the aid of an optically transparent adhesive.
  • a cover layer made of a polymer film is preferably applied.
  • the cover layer preferably contains PVB, EVA, PET and / or mixtures thereof.
  • the covering layer is preferably arranged in a projecting manner so that the carrier film and the heatable coating are laminated on the surface of the pane with the aid of the covering layer.
  • the invention further includes the use of the inventive pane with heatable, optically transparent sensor array in vehicles, ships, aircraft and helicopters.
  • the pane according to the invention with a heatable, optically transparent sensor field is preferably used as a windscreen and / or rear window of a vehicle.
  • FIG. 2 shows a cross section of a preferred embodiment of the pane (1) according to the invention with a heatable, optically transparent sensor array (2),
  • FIG. 3 shows a cross section of the heatable, optically transparent sensor field (2)
  • FIG. 4 shows a further cross section of the heatable, optically transparent sensor array (2) and 5 shows a cross section of a preferred embodiment of the heatable, optically transparent sensor array (2).
  • FIG. 1 shows a plan view of the pane (1) according to the invention.
  • a heatable film (3) is arranged on an optically transparent sensor array (2).
  • the optically transparent sensor array (2) comprises the part of the pane (1) which supplies the sensor (7) shown in FIG. 2 with the corresponding optical and electromagnetic information or signals. This may be any part of the disc (1) or an inserted disc segment which has a high transmission for the corresponding optical and electromagnetic signals.
  • the heatable film (3) is connected to an electrical contact (4) which is connected to a voltage source, for example a car battery.
  • FIG. 2 shows a cross section along the slice height I according to I 'in FIG. 1 of a preferred embodiment of the pane (1) according to the invention with heatable, optically transparent sensor array (2).
  • a heatable film (3) is arranged on the disk inside of the disk (1).
  • the sensor (7) aligned with the optically transparent sensor field (2) is located in an encapsulation (6) fastened to the optically transparent sensor field (2).
  • desiccant (8) are arranged within the encapsulation (6).
  • the desiccants (8) are preferably incorporated in the surface of the encapsulation (6).
  • FIG. 3 shows a cross section of the heatable, optically transparent sensor array (2).
  • the heatable film (3) On the optically transparent sensor field (2), the heatable film (3) with the electrical contact (4) is arranged.
  • the heatable film (3) contains a carrier film (3a) and a heatable coating (3b) and / or heating wires (3c) on the side of the carrier film (3a) facing away from the optically transparent sensor field (2).
  • CVD chemical vapor deposition
  • PVD physical vapor deposition
  • FIG. 4 shows a cross section of a further embodiment of the heatable, optically transparent sensor array (2).
  • the heatable film (3) On the optically transparent sensor field (2) arranged the heatable film (3) with the electrical contact (4).
  • the heatable film (3) contains a carrier film (3a) and a heatable coating (3b) and / or heating wires (3c) on the side of the carrier film (3a) facing the optically transparent sensor field (2).
  • CVD chemical vapor deposition
  • PVD physical vapor deposition
  • FIG. 5 shows a cross-section of a preferred embodiment of the heatable, optically transparent sensor array (2).
  • the heatable film (3) with the electrical contact (4) is arranged on the optical disk segment.
  • the heatable film (3) contains a carrier film (3a) and a heatable coating (3b) and / or heating wires (3c).
  • a cover layer (3d) made of a polymer film is attached on the heatable coating (3b) and / or heating wires (3c).
  • the cover layer (3d) is preferably arranged standing over so that the carrier film (3a) and the heatable coating (3b) are laminated and fixed on the disk surface (1, 2) via the cover layer (3d).
  • the cover layer (3d) contains an antistatic, hydrophilic, hydrophobic or lipophobic and hydrophobic coating (3e).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Surface Heating Bodies (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Surface Treatment Of Glass (AREA)
  • Optical Measuring Cells (AREA)

Abstract

L'invention concerne un pare-brise avec un réseau de capteurs optiquement transparent et pouvant être chauffé, comprenant au moins : a) une glace (1), b) au moins un réseau de capteurs (2) optiquement transparent disposé à la surface de la glace (1), c) au moins un film pouvant être chauffé (3) appliqué sur le réseau de capteurs optiquement transparent (2) et comprenant au moins : c1) un film porteur (3a), c2) un revêtement pouvant être chauffé (3b), des conducteurs imprimés, des trames et/ou des fils chauffants (3c) sur le film porteur (3a), d) au moins un élément de contact électrique (4) placé sur le revêtement pouvant être chauffé (3b) et/ou les fils chauffants (3c) et e) un encapsulage (6) disposé sur le réseau de capteurs optiquement transparent (2) et le film pouvant être chauffé (3), ainsi qu'un détecteur (7) placé dans l'encapsulage (6).
EP10726957A 2009-06-24 2010-06-22 Pare-brise avec réseau de capteurs optiquement transparent et pouvant être chauffé Withdrawn EP2446701A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009026021A DE102009026021A1 (de) 2009-06-24 2009-06-24 Scheibe mit beheizbaren, optisch transparenten Sensorfeld
PCT/EP2010/058805 WO2010149649A1 (fr) 2009-06-24 2010-06-22 Pare-brise avec réseau de capteurs optiquement transparent et pouvant être chauffé

Publications (1)

Publication Number Publication Date
EP2446701A1 true EP2446701A1 (fr) 2012-05-02

Family

ID=42937139

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10726957A Withdrawn EP2446701A1 (fr) 2009-06-24 2010-06-22 Pare-brise avec réseau de capteurs optiquement transparent et pouvant être chauffé

Country Status (9)

Country Link
US (1) US8907250B2 (fr)
EP (1) EP2446701A1 (fr)
JP (1) JP5753164B2 (fr)
KR (1) KR101667077B1 (fr)
CN (1) CN102804912B (fr)
BR (1) BRPI1012805B1 (fr)
DE (1) DE102009026021A1 (fr)
MX (1) MX2011008933A (fr)
WO (1) WO2010149649A1 (fr)

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CN102804912A (zh) 2012-11-28
BRPI1012805B1 (pt) 2022-05-10
CN102804912B (zh) 2016-06-01
MX2011008933A (es) 2011-09-21
KR101667077B1 (ko) 2016-10-17
KR20120099331A (ko) 2012-09-10
BRPI1012805A2 (pt) 2020-08-25
US8907250B2 (en) 2014-12-09
US20120103960A1 (en) 2012-05-03
JP2012530646A (ja) 2012-12-06
JP5753164B2 (ja) 2015-07-22
DE102009026021A1 (de) 2010-12-30
WO2010149649A1 (fr) 2010-12-29

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