WO2000055011A1 - Retroviseur - Google Patents

Retroviseur Download PDF

Info

Publication number
WO2000055011A1
WO2000055011A1 PCT/EP2000/002376 EP0002376W WO0055011A1 WO 2000055011 A1 WO2000055011 A1 WO 2000055011A1 EP 0002376 W EP0002376 W EP 0002376W WO 0055011 A1 WO0055011 A1 WO 0055011A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
rearview mirror
housing
mirror according
light guide
Prior art date
Application number
PCT/EP2000/002376
Other languages
German (de)
English (en)
Inventor
Wolfgang Athenstaedt
Johann Stark
Original Assignee
Magna Auteca Zweigniederlassung Der Magna Holding 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 Magna Auteca Zweigniederlassung Der Magna Holding Ag filed Critical Magna Auteca Zweigniederlassung Der Magna Holding Ag
Priority to AU39624/00A priority Critical patent/AU3962400A/en
Publication of WO2000055011A1 publication Critical patent/WO2000055011A1/fr

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 a rearview mirror according to the preamble of the main claim.
  • Rearview mirrors which have a layer structure accommodated in a housing, the layer structure comprising at least one reflecting layer and a layer which can be changed in terms of its degree of transmission or degree of absorption.
  • the transmission or absorption of the layer is controlled by a voltage that is supplied by a control unit.
  • At least one sensor includes the brightness on the mirror and supplies a corresponding signal to the control unit, which controls the layer that can be changed in transmission or absorption.
  • the sensor is on arranged on the outer surface of the housing or behind the mirror surface. This has the disadvantage that only limited possibilities for an optically appealing design are possible and the installation position of the sensor or of the light-sensitive component can only be changed within narrow limits.
  • the invention has for its object to provide a rearview mirror with a controllable dimming system, which detects the light situation on and / or around the mirror in an improved manner and prevents constructive restrictions on the installation position of the light-sensitive elements controlling the dimming system.
  • the installation position of the light-sensitive component can be selected at any point in the mirror housing, the rear-view mirror being able to be both an inside and an outside mirror.
  • the light situation in a vehicle is detected by two sensors.
  • One sensor is used to determine the lighting situation in the room, i.e. it detects the ambient light and the second sensor is used to determine the glare situation, i.e. the radiation generated behind the vehicle.
  • the sensor that is to detect the glare situation preferably both sensors, is assigned a light-guiding element, the radiation surface of which
  • Sensor is opposite and the radiation of which catching light entry surface is guided through the wall of the housing of the rearview mirror to the outside or is arranged in the region of a transparent part of the housing.
  • the installation position of the sensor or the light-sensitive component in the mirror housing can be chosen as desired, the sensor is preferably located directly on the circuit board for the control.
  • the light guide enables the light to be captured in a very small solid angle, so that fewer disturbances due to edge effects occur. This means that glare can be determined more precisely.
  • the sensor that detects the ambient light situation can also be connected to a light guide element, the light entry surface of which is arranged in such a way that the ambient light enters as unadulterated as possible and is directed to the associated other end of the light guide element, the receiver or sensor.
  • the sensors can be arranged on a circuit board.
  • the ambient light is determined by a sensor which is positioned in a small opening in the interior mirror housing in the direction of travel.
  • this sensor also hits light, which can lead to malfunctions. Therefore, in one embodiment, there are two or several light guides are provided, which exit at different points on the housing, as a result of which the lighting situation can be determined better and more clearly.
  • the light guides for the ambient light are preferably all bundled onto one sensor, but sensors corresponding to the number of light guides can be provided.
  • a light entry end of a light guide can point in the direction of travel, while the light entry ends of the further light guide (s) point into the passenger compartment of the vehicle.
  • the light can be captured from a larger solid angle by a special shaping of the light guide ends, ie a larger solid angle can be detected.
  • the received signal or signals for switching on or for controlling the lighting in the vehicle and on the vehicle in an automated manner.
  • light guides are described, the light entry surfaces of which are formed by the end faces of their ends.
  • light guides that couple light from the side can also be used to record the lighting situation in the room.
  • Such a property of a light guide makes it possible to detect the light from a very large solid angle by means of a short piece of light guide which protrudes from the mirror housing.
  • the control unit compares the measured values of the two sensors and the control unit supplies an electrical one in accordance with the measured light intensities Voltage is applied to the mirror or a corresponding voltage is applied to the layer that can be changed in the transmission or absorption. If glare is registered by the sensor that measures the light situation behind the vehicle, one or more layers in the layer structure of the mirror are electrically darkened.
  • a microcontroller is preferably used as the control unit, in which the evaluation of the measured values is carried out by the sensors.
  • the physiological needs of the driver can also be taken into account, for example characteristic curves or tables are stored in the microcontroller, by means of which the glare situation in the vehicle is adapted to the physiological needs of the driver.
  • the microcontroller then controls or regulates the voltage to be applied in accordance with the light situation and the driving situation, whereby different reactions of the driver to glare or different external situations influencing the glare are taken into account.
  • control the outside mirrors via the detection on the inside mirror via the microcontroller or the control unit.
  • the control voltages are converted into a digital signal by the microcontroller on the basis of the signals recorded on the interior mirror and fed into an in-vehicle bus system. This signal is forwarded to the exterior mirrors via the bus system and decoded there by a further microcontroller, which then controls it.
  • Information can also be obtained via the bus system
  • Interior mirrors that describe the driving situation, including for example, it is detected whether the reverse gear is engaged, in which no turns are to be made.
  • Fig. 1 shows the view of an inside mirror from the front according to an embodiment of the invention
  • Fig. 2 shows the view of an inside mirror from behind according to another embodiment.
  • the inner mirror 1 shown in FIG. 1 consists of a mirror unit 3 accommodated in a housing 2, which has a layer structure which comprises a reflecting layer and at least one layer which changes the intensity of the incident and / or reflected radiation. Furthermore, the
  • Mirror unit 3 has a circuit board (not shown) with a control unit which, depending on the light detected by sensors, supplies a voltage which controls the transmission or absorption of the layer structure as a function of the light.
  • the end of an optical fiber 4 can be seen, which directs the light falling on the front surface of the interior mirror 1 to a sensor arranged on the circuit board.
  • FIG. 2 shows the rear side, that is to say the side of the housing of the inner mirror 1, a plurality of optical fibers 5 provided in the housing 2 ending at different points on the housing wall. Within the housing, they are combined to form a light exit surface in the immediate vicinity of the sensor 6.
  • the arrangement according to FIG. 2 detects the ambient light, the light situation being correctly detected even when an oncoming vehicle is dazzled, which is indicated by the bright spot.
  • the respective light-guiding element is designed as an optical fiber, but it can also be designed as a plate and / or light-guiding molded body. Furthermore, the light entry surfaces of the optical fiber are arranged in the wall of the housing 2 in FIGS. 1 and 2. This means that the light entry surface of the respective light-guiding element can be part of the wall of the housing. In another embodiment, it is conceivable that the light entry end is arranged behind a transparent area of the housing, or is in operative connection with it.
  • Lichtleitiatas can be chosen so that it is adapted to the desired solid angle. Furthermore, the shape can be chosen so that it is dirt-repellent, for example through slipstream cones, inclined surfaces or the like.
  • the light-guiding element can have different shapes and areas between the light entry surface and the light exit surface, it can also consist of several optically connected sub-elements.
  • the light entry surface is preferably provided with a dirt-repellent and / or scratch-resistant coating. It can also have an anti-reflective coating.
  • the light entry and / or exit areas of the light guide element have a selective absorption filter or an interference filter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Abstract

L'invention concerne un rétroviseur ayant une structure en couches logée dans un boîtier et comportant une couche réflectrice et au moins une couche modifiant l'intensité du rayonnement incident ou réfléchi. Cette couche est commandée par une tension appliquée, réglée en fonction d'un signal de capteur déterminant le rayonnement incident. Au capteur disposé à l'intérieur du boîtier est affectée au moins une fibre optique dont une extrémité se situe à proximité immédiate du capteur et dont l'autre extrémité est amenée vers l'extérieur à travers le boîtier.
PCT/EP2000/002376 1999-03-17 2000-03-17 Retroviseur WO2000055011A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU39624/00A AU3962400A (en) 1999-03-17 2000-03-17 Rear-view mirror

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19913061.2 1999-03-17
DE1999113061 DE19913061A1 (de) 1999-03-17 1999-03-17 Rückblickspiegel

Publications (1)

Publication Number Publication Date
WO2000055011A1 true WO2000055011A1 (fr) 2000-09-21

Family

ID=7902072

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/002376 WO2000055011A1 (fr) 1999-03-17 2000-03-17 Retroviseur

Country Status (3)

Country Link
AU (1) AU3962400A (fr)
DE (1) DE19913061A1 (fr)
WO (1) WO2000055011A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005021331A1 (fr) * 2003-08-21 2005-03-10 Schefenacker Vision Systems Germany Gmbh & Co. Kg Retroviseur pour vehicules
DE202008000329U1 (de) * 2008-01-09 2009-06-25 Magna Mirrors Engineering Gmbh Innenrückspiegel für ein Kraftfahrzeug
DE102004027611B4 (de) * 2004-06-05 2011-06-30 SMR Patents S.à.r.l. Schalteinrichtung zum Abblenden eines EC-Spiegelglases eines Rückblickspiegels eines Kraftfahrzeuges
WO2012177750A1 (fr) 2011-06-24 2012-12-27 Gentex Corporation Ensemble rétroviseur avec capteurs multiples de lumière ambiante

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603946A (en) * 1982-09-29 1986-08-05 Kabushiki Kaisha Tokai Rika Denki Seisakusho Reflection controllable view mirror device for motor vehicle or the like
US5434407A (en) * 1993-08-23 1995-07-18 Gentex Corporation Automatic rearview mirror incorporating light pipe
DE29600859U1 (de) * 1996-01-19 1996-05-30 Hohe Gmbh & Co Kg Lichtleiter am Innenspiegel
US5659423A (en) * 1994-09-30 1997-08-19 Donnelly Corporation Modular variable reflectance mirror assembly
US5677526A (en) * 1994-08-25 1997-10-14 Murakami Corporation Rear light detection device for an automatic antiglare mirror
DE19622002A1 (de) * 1996-05-31 1997-12-04 Cherry Mikroschalter Gmbh Selbstdimmendes Spiegelsystem

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603946A (en) * 1982-09-29 1986-08-05 Kabushiki Kaisha Tokai Rika Denki Seisakusho Reflection controllable view mirror device for motor vehicle or the like
US5434407A (en) * 1993-08-23 1995-07-18 Gentex Corporation Automatic rearview mirror incorporating light pipe
US5677526A (en) * 1994-08-25 1997-10-14 Murakami Corporation Rear light detection device for an automatic antiglare mirror
US5659423A (en) * 1994-09-30 1997-08-19 Donnelly Corporation Modular variable reflectance mirror assembly
DE29600859U1 (de) * 1996-01-19 1996-05-30 Hohe Gmbh & Co Kg Lichtleiter am Innenspiegel
DE19622002A1 (de) * 1996-05-31 1997-12-04 Cherry Mikroschalter Gmbh Selbstdimmendes Spiegelsystem

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005021331A1 (fr) * 2003-08-21 2005-03-10 Schefenacker Vision Systems Germany Gmbh & Co. Kg Retroviseur pour vehicules
US7320525B2 (en) 2003-08-21 2008-01-22 Schefenacker Vision Systems Germany Gmbh Rear-view mirror for vehicles
DE102004027611B4 (de) * 2004-06-05 2011-06-30 SMR Patents S.à.r.l. Schalteinrichtung zum Abblenden eines EC-Spiegelglases eines Rückblickspiegels eines Kraftfahrzeuges
DE202008000329U1 (de) * 2008-01-09 2009-06-25 Magna Mirrors Engineering Gmbh Innenrückspiegel für ein Kraftfahrzeug
WO2012177750A1 (fr) 2011-06-24 2012-12-27 Gentex Corporation Ensemble rétroviseur avec capteurs multiples de lumière ambiante
EP2723612A1 (fr) * 2011-06-24 2014-04-30 Gentex Corporation Ensemble rétroviseur avec capteurs multiples de lumière ambiante
EP2723612A4 (fr) * 2011-06-24 2014-06-11 Gentex Corp Ensemble rétroviseur avec capteurs multiples de lumière ambiante

Also Published As

Publication number Publication date
AU3962400A (en) 2000-10-04
DE19913061A1 (de) 2000-09-21

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