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WO1999022964A1 - Systeme de retroviseur attenuant automatiquement la lumiere pour vehicules automobiles - Google Patents

Systeme de retroviseur attenuant automatiquement la lumiere pour vehicules automobiles Download PDF

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Publication number
WO1999022964A1
WO1999022964A1 PCT/EP1998/006592 EP9806592W WO9922964A1 WO 1999022964 A1 WO1999022964 A1 WO 1999022964A1 EP 9806592 W EP9806592 W EP 9806592W WO 9922964 A1 WO9922964 A1 WO 9922964A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
power supply
mirror system
control component
motor vehicle
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.)
Ceased
Application number
PCT/EP1998/006592
Other languages
German (de)
English (en)
Inventor
Johannes Segner
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 AG
Original Assignee
Bayer AG
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 AG filed Critical Bayer AG
Priority to AU10304/99A priority Critical patent/AU1030499A/en
Publication of WO1999022964A1 publication Critical patent/WO1999022964A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R1/00—Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles
    • B60R1/02—Rear-view mirror arrangements
    • B60R1/08—Rear-view mirror arrangements involving special optical features, e.g. avoiding blind spots, e.g. convex mirrors; Side-by-side associations of rear-view and other mirrors
    • B60R1/083—Anti-glare mirrors, e.g. "day-night" mirrors
    • B60R1/088—Anti-glare mirrors, e.g. "day-night" mirrors using a cell of electrically changeable optical characteristic, e.g. liquid-crystal or electrochromic mirrors

Definitions

  • the invention relates to automatically dimming mirror systems for motor vehicles based on an electrochromic mirror cell.
  • Electrochromic mirrors also abbreviated to EC mirrors, take advantage of the reversible change in color and / or optical density in an electrochromic medium, which is obtained by an electrochemical redox reaction in this electrochromic material, in which the oxidized state and the reduced one Condition have different colors and / or optical densities.
  • Such electrochromic materials change their optical properties due to the action of an electronic field; they can be brought into their initial state by short-circuiting or by applying an opposite pole field.
  • Electrochromic mirrors are preferably used in the automotive industry, in particular as automatically dimming interior and exterior mirrors in motor vehicles.
  • the dimmable mirror system has at least one photoelectric sensor for detecting the glare, which is attached to the vehicle, aligned in the direction from which the glare comes, and means for switching off the
  • Exposure to ambient light e.g. another photoelectric sensor. These sensors detect the risk of glare at lightning speed and defuse it by slidingly reducing the mirror reflection to about 10% within a few seconds. When the risk of glare is over, the specular reflection immediately increases to the initial value. This automatic interplay of darkening and brightening the
  • the heart of the EC mirror is the optically active cell, hereinafter called the mirror cell. It typically consists of two panes shaped in accordance with the mirror configuration, which are preferably made of glass, ie a front glass and a rear glass, which are connected to one another at a distance and are sealed along their circumference in a manner sealed off from the environment.
  • the electrochromically active medium in particular a liquid with viologens, is located between the two disks.
  • Each disc is provided on the side facing the EC medium with a transparent or reflective electrically conductive electrode layer covering the entire disc surface, to which a connecting wire is attached in each case.
  • the actual mirror layer is on the back glass.
  • a voltage is applied to the two connecting wires of the two surface electrodes, e.g. the voltage generated by the photoelectric sensor due to the light of a rear passenger car, then the depth of absorption of the EC medium arranged in front of the mirror pane changes and thus the reflectivity of the mirror cell.
  • the dimmable mirror systems also have a control component which converts the signals from the photoelectric sensors into a DC control voltage for the mirror cell.
  • the system also has a power supply stage for supplying the photoelectric sensors and the control component, which is connected to the on-board power system of the motor vehicle concerned in accordance with the prior art.
  • the on-board power system is generally connected to the power supply stage of the dimmable mirror system via the ignition lock.
  • the energy supply for dimmable rear-view mirrors independent of the on-board power system.
  • automatically dimming rear-view mirrors are now optional for vehicles of the higher performance class - e.g. from 2.5 1 cubic capacity upwards - offered and installed.
  • complex connecting lines are provided as a precaution, automatically dimming the possible, but not always used, connection of the automatically dimming interior mirror to the vehicle electrical system and the connection of the controlling interior mirror to the possible connection
  • the possibly unused supply lines can be omitted in these vehicles of the higher performance class.
  • the invention has for its object to design dimmable mirror systems so that their power supply is not dependent on the on-board power system of the motor vehicle.
  • an electrochromic mirror cell the reflectance of which can be changed by applying a DC voltage
  • at least one photoelectric sensor for detecting at least the glare light, aligned on the vehicle in the direction from which the glare light occurs
  • control component which converts the signals of the photoelectric sensor into a control direct voltage for the mirror cell
  • a power supply stage for supplying the photoelectric sensor and the control component which can be connected to the on-board power system of the motor vehicle and which has an accumulator, which is connected to a solar cell unit for recharging, for operating the mirror system independently of the power supply of the motor vehicle.
  • the means for switching off the effects of the ambient light can in principle consist of a mechanical shield that shields the light.
  • an additional photoelectric sensor for detecting the ambient light is preferably provided, the output voltage of which is connected to the control component, this additional photoelectric sensor also being connected to the power supply stage.
  • control component with the power supply stage is accommodated in a housing which has access to the accumulator. This creates a closed unit with one
  • the mirror cell is accommodated in a conventional mirror holder which, like the photoelectric sensors, has a device for attachment to the motor vehicle.
  • the power supply stage expediently has a plug contact with a downstream electronics for connecting the mirror system to the on-board power supply system of the motor vehicle.
  • the contact can be made or interrupted in a simple manner.
  • a device connected to the accumulator of the power supply stage is provided for displaying the available capacity of the accumulator.
  • the control stage is either connected to the vehicle electrical system or is supplied with electrical energy by an independent battery.
  • the dimmable mirror system for motor vehicles shown in the drawing initially has an electrochromic mirror cell 1, the reflectance of which can be changed by applying a DC voltage.
  • This optically effective mirror cell consists of two, corresponding to the mirror configuration - here that of a car exterior mirror - correspondingly shaped transparent flat panes, which in the exemplary embodiment consists of glass, preferably float glass, namely the front glass 2, which is assigned to the direction of light incidence, and the rear glass 3rd
  • the panes In principle, it is possible to manufacture the panes from a transparent plastic material.
  • the front glass 2 is provided on the side facing away from the light with an electrically conductive surface electrode 4, which extends over the entire surface of the front glass 2.
  • the rear glass 3 is provided on the side facing the light with an electrically conductive surface electrode 5, which likewise extends over the entire surface of the rear glass 3.
  • the electrically conductive surface electrode 4 is formed by an ITO layer (indium tin oxide), which is transparent, whereas the surface electrode 5 is formed by a chrome / rhodium layer, which specifies a reflective surface.
  • the surface electrode 5 is likewise formed by an ITO layer, an additional mirror layer then being applied to the back of the rear glass 3.
  • the electrochromic medium 6 preferably in the form of an electrochromic solution of the type mentioned at the beginning.
  • the two disks 2 and 3 are with the sides on which the Surface electrodes 4 and 5 are all around the edge glued to form a closed cell into which liquid can be filled.
  • the corresponding composite adhesive which must consist of an electrically insulating adhesive, so that there is no internal short circuit of the two surface electrodes, forms an adhesive bead 7. So that this adhesive bead also serves as a spacer between the two surface electrodes 4 and 5, the contains
  • Composite adhesive preferably small glass balls, which specify the distance between the two cell walls, which is typically in the range from 0.1 to 0.2 mm.
  • the glass panes 2 and 3 are arranged somewhat offset from one another, an edge strip of the surface electrodes is exposed in each case, to which an electrical contact 8 can be attached in each case.
  • the structure of the mirror cell in particular the contacting of the surface electrodes, can alternatively also be made in accordance with the design in the earlier patent application 197 37 978.8-51.
  • the mirror cell 1 If the mirror cell 1 is filled with the EC solution 6, its light transmission can be changed by applying an electrical potential between the surface electrodes 4 and 5.
  • the two surface electrodes electrically insulated from one another, are connected with their connecting lines 8a and 8b to a DC voltage source, which is specified by a control component 9.
  • the dimmable mirror system for motor vehicles shown in the drawing has a photoelectric sensor 10 for detecting the ambient light, for example street lighting, and a photoelectric sensor 11 for detecting the glare light.
  • the sensor 10 is attached to the motor vehicle and aligned with the ambient light 12, whereas the sensor 11, which is also attached to the motor vehicle, is oriented in the direction from which the glare light 13 strikes, for example the light of a rear second motor vehicle.
  • the control component 9 converts the signals from the photoelectric sensors 10 and 11 into a control DC voltage for the mirror cell 1.
  • the corresponding electronic circuits are state of the art and are described, for example, in US Pat. No. 4,917,477 cited at the beginning.
  • the automatically dimming mirror system also has a power supply stage 14, which is also an integral part of the control component
  • This power supply stage 14 supplies the photoelectric sensors
  • This power supply stage 14 can be connected via the upper connection 15 to the on-board power system of the motor vehicle.
  • the power supply stage can have a plug contact with a downstream electronics, in order to make or disconnect the connection in a simple manner depending on the choice.
  • the power supply stage 14 also has an accumulator 16 which is connected to a solar cell unit 17 for recharging, so that the dimmable mirror system can be operated independently of the vehicle's power supply.
  • the dimmable mirror system according to the invention has a very low-maintenance own energy supply with simple means.
  • the energy supply stage 14 is equipped with the usual electronic means to selectively connect the vehicle electrical system on the upper connection 15 or the voltage of the accumulator 16 as the supply voltage.
  • Such switches are e.g. through desktop computers that are both a
  • the control component 9 with the power supply stage 14 is preferably accommodated in a housing which has access to the accumulator 16. This ensures a compact accommodation of the functional and operating parts of the mirror system.
  • the mirror cell is received in a known manner in a mirror holder, as is shown, for example, in US Pat. No. 5,151,824. Like the photoelectric sensors, this mirror holder has devices for fastening the associated parts to the motor vehicle.
  • the automatically dimming mirror system preferably has a device (not shown) for displaying the capacity of the rechargeable battery, which is coupled to the power supply stage. This makes it easy to see 201 what scope is still available for your own energy supply.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Electrochromic Elements, Electrophoresis, Or Variable Reflection Or Absorption Elements (AREA)
  • Optical Elements Other Than Lenses (AREA)

Abstract

L'invention concerne des systèmes de rétroviseurs atténuant automatiquement la lumière, destinés aux véhicules automobiles, qui comportent une cellule (1) de rétroviseur à électrochrome, dont le degré de réflexion peut être modifié par l'application d'une tension continue. Les rétroviseurs comportent également des capteurs (10, 11), qui permettent de détecter la lumière ambiante (12) et la lumière des codes (13) des véhicules de derrière; une unité de commande (9), qui transforme les signaux des capteurs en une tension continue de commande destinée à la cellule (1); et un module d'alimentation en courant (14), qui amène aux capteurs (10, 11) et à l'unité de commande (9) l'énergie électrique nécessaire. Le module d'alimentation (14) est connecté au système électrique du véhicule. Afin d'assurer une alimentation en électricité autonome, indépendante du réseau de bord du véhicule, ledit module (14) comporte un accumulateur (16) relié à une unité pile solaire (17), qui le recharge en continu.
PCT/EP1998/006592 1997-10-30 1998-10-17 Systeme de retroviseur attenuant automatiquement la lumiere pour vehicules automobiles Ceased WO1999022964A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10304/99A AU1030499A (en) 1997-10-30 1998-10-17 Automatic light dimming rear-view mirror system for motor vehicles

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19747897.2 1997-10-30
DE1997147897 DE19747897A1 (de) 1997-10-30 1997-10-30 Automatisch abblendendes Spiegelsystem für Kraftfahrzeuge

Publications (1)

Publication Number Publication Date
WO1999022964A1 true WO1999022964A1 (fr) 1999-05-14

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1998/006592 Ceased WO1999022964A1 (fr) 1997-10-30 1998-10-17 Systeme de retroviseur attenuant automatiquement la lumiere pour vehicules automobiles

Country Status (3)

Country Link
AU (1) AU1030499A (fr)
DE (1) DE19747897A1 (fr)
WO (1) WO1999022964A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1409294A4 (fr) * 2001-07-02 2004-09-08 Schefenacker Vision Sys Au Retroviseur anti-eblouissant de vehicule
WO2014063401A1 (fr) * 2012-10-26 2014-05-01 深圳市车友互联科技有限公司 Système d'alimentation électrique de rétroviseur intérieur de véhicule, et rétroviseur intérieur de véhicule
CN104842880A (zh) * 2015-05-21 2015-08-19 京东方科技集团股份有限公司 车用后视镜及其对光线强度的调节方法和交通工具

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10043087B4 (de) * 2000-09-01 2007-01-04 Robert Bosch Gmbh Innenspiegeleinrichtung für ein Kraftfahrzeug
DE10207453A1 (de) * 2002-02-22 2003-09-04 Opel Adam Ag Steuerungs-Schaltung zum Einstellen des Reflexionsvermögens eines blendungsfreien Rückblickspiegels und eine blendungsfreie Rückblickspiegel-Einheit
DE102007001958A1 (de) 2007-01-13 2008-07-17 GM Global Technology Operations, Inc., Detroit Selbstabblendender Spiegel an einem Kraftfahrzeug

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029343A (en) * 1978-09-06 1980-03-19 Rickson C Mirrors with Control of Reflecting Power
JPS5837601A (ja) * 1981-08-31 1983-03-04 Nippon Denso Co Ltd 自動車用ル−ムミラ−
FR2513198A1 (fr) * 1981-09-21 1983-03-25 Herrmann Henri Retroviseur anti-eblouissant
JPS60104924A (ja) * 1983-11-14 1985-06-10 Nippon Denso Co Ltd 防眩型反射鏡
FR2562006A1 (fr) * 1984-03-28 1985-10-04 Tokai Rika Co Ltd Retroviseur anti-eblouissant
JPS6154339A (ja) * 1984-08-24 1986-03-18 Sumitomo Electric Ind Ltd 自動防眩ミラ
JPS6428044A (en) * 1987-04-17 1989-01-30 Mazda Motor Glare proof mirror device for vehicle
US4917477A (en) 1987-04-06 1990-04-17 Gentex Corporation Automatic rearview mirror system for automotive vehicles
US5151824A (en) 1990-11-26 1992-09-29 Donnelly Corporation Vehicular outside mirror assembly
FR2681295A1 (fr) * 1991-09-13 1993-03-19 Renault Dispositif de retrovision a reflectivite variable.
DE19737978A1 (de) 1997-08-30 1999-03-11 Bayer Ag Elektrochromer Spiegel
EP0967335A2 (fr) 1998-06-26 1999-12-29 FRANZ KALDEWEI GMBH & CO. Installation sanitaire pour baignoire ou douche

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS621652A (ja) * 1985-06-25 1987-01-07 Nippon Denso Co Ltd 車両用防眩型反射鏡駆動装置
JPH01153355A (ja) * 1987-12-10 1989-06-15 Omron Tateisi Electron Co バックミラー
JPH06180125A (ja) * 1992-04-21 1994-06-28 Tsukamoto Shokai:Kk 組合わせ形式の床暖房用溝付パネルにおける合成樹脂パイプの配管方法及び床暖房パネル

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2029343A (en) * 1978-09-06 1980-03-19 Rickson C Mirrors with Control of Reflecting Power
JPS5837601A (ja) * 1981-08-31 1983-03-04 Nippon Denso Co Ltd 自動車用ル−ムミラ−
FR2513198A1 (fr) * 1981-09-21 1983-03-25 Herrmann Henri Retroviseur anti-eblouissant
JPS60104924A (ja) * 1983-11-14 1985-06-10 Nippon Denso Co Ltd 防眩型反射鏡
FR2562006A1 (fr) * 1984-03-28 1985-10-04 Tokai Rika Co Ltd Retroviseur anti-eblouissant
JPS6154339A (ja) * 1984-08-24 1986-03-18 Sumitomo Electric Ind Ltd 自動防眩ミラ
US4917477A (en) 1987-04-06 1990-04-17 Gentex Corporation Automatic rearview mirror system for automotive vehicles
JPS6428044A (en) * 1987-04-17 1989-01-30 Mazda Motor Glare proof mirror device for vehicle
US5151824A (en) 1990-11-26 1992-09-29 Donnelly Corporation Vehicular outside mirror assembly
FR2681295A1 (fr) * 1991-09-13 1993-03-19 Renault Dispositif de retrovision a reflectivite variable.
DE19737978A1 (de) 1997-08-30 1999-03-11 Bayer Ag Elektrochromer Spiegel
EP0967335A2 (fr) 1998-06-26 1999-12-29 FRANZ KALDEWEI GMBH & CO. Installation sanitaire pour baignoire ou douche

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 007, no. 117 (P - 198) 21 May 1983 (1983-05-21) *
PATENT ABSTRACTS OF JAPAN vol. 009, no. 253 (P - 395) 11 October 1985 (1985-10-11) *
PATENT ABSTRACTS OF JAPAN vol. 010, no. 216 (M - 502) 29 July 1986 (1986-07-29) *
PATENT ABSTRACTS OF JAPAN vol. 013, no. 204 (M - 825) 15 May 1989 (1989-05-15) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1409294A4 (fr) * 2001-07-02 2004-09-08 Schefenacker Vision Sys Au Retroviseur anti-eblouissant de vehicule
WO2014063401A1 (fr) * 2012-10-26 2014-05-01 深圳市车友互联科技有限公司 Système d'alimentation électrique de rétroviseur intérieur de véhicule, et rétroviseur intérieur de véhicule
CN103786648A (zh) * 2012-10-26 2014-05-14 深圳市车友互联科技有限公司 汽车内后视镜的供电系统和汽车内后视镜
CN103786648B (zh) * 2012-10-26 2017-05-31 深圳市车友互联科技有限公司 汽车内后视镜的供电系统和汽车内后视镜
CN104842880A (zh) * 2015-05-21 2015-08-19 京东方科技集团股份有限公司 车用后视镜及其对光线强度的调节方法和交通工具

Also Published As

Publication number Publication date
DE19747897A1 (de) 1999-05-27
AU1030499A (en) 1999-05-24

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