WO2005123453A1 - Aussen- oder rückspiegel für ein kraftfahrzeug - Google Patents
Aussen- oder rückspiegel für ein kraftfahrzeug Download PDFInfo
- Publication number
- WO2005123453A1 WO2005123453A1 PCT/EP2005/005151 EP2005005151W WO2005123453A1 WO 2005123453 A1 WO2005123453 A1 WO 2005123453A1 EP 2005005151 W EP2005005151 W EP 2005005151W WO 2005123453 A1 WO2005123453 A1 WO 2005123453A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- layer
- exterior
- mirror according
- rearview mirror
- control unit
- Prior art date
Links
- 230000000694 effects Effects 0.000 claims abstract description 4
- 230000004313 glare Effects 0.000 claims description 7
- 238000002834 transmittance Methods 0.000 claims description 6
- 239000012876 carrier material Substances 0.000 claims description 5
- 230000003667 anti-reflective effect Effects 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 abstract description 6
- 238000013016 damping Methods 0.000 description 1
- 230000003760 hair shine Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
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
-
- 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
- B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
- B60R2001/1253—Mirror assemblies combined with other articles, e.g. clocks with cameras, video cameras or video screens
Definitions
- the invention relates to an exterior or rear-view mirror for a motor vehicle according to the preamble of claim 1.
- an exterior or rear-view mirror arrangement for a motor vehicle comprising at least one mirror, a layer being applied at least partially on the top of the mirror, the transmission of which can be changed continuously or stepwise by an electrical control signal from a control unit, at least one photosensitive element, from whose signals a glare can be estimated for a viewer and can be forwarded to the control unit, the control unit changing the transmission of the layer as a function of the estimated glare.
- the layer is preferably designed as an LCD film, which is divided into sections and can be controlled independently of one another.
- the photosensitive element is arranged between the LCD film and the mirror.
- a disadvantage of the known arrangement is that the photosensitive element must not be too large in order not to impair the quality of the mirror. On the other hand, it is relatively difficult to estimate the glare effect with a small-area photosensitive element.
- the invention is therefore based on the technical problem of creating an exterior and rearview mirror for a motor vehicle, by means of which an estimation of the glare and its compensation is improved.
- the highly reflective layer is partially transparent, the photosensitive element being designed as a camera and being arranged behind the highly reflective layer, the coordinates of an incident and reflected light beam being determined by means of the camera, the control unit determining the assigned sections of the second layer can be controlled such that the reflected light does not exceed an adjustable brightness.
- the advantage of the camera which is designed, for example, as a CCD or CMOS matrix camera, is that the entire image content is taken into account. Since it can be assumed with good approximation that the incident light comes from the infinite, this is approximately parallel. In this case, each pixel on the camera can be uniquely assigned a room segment from which the incident light came. The region of the layer where the reflected light beam passes can then also be determined by means of the law of reflection.
- the threshold values, from which a reduction is made, and the values of the damping can be individually adjusted and adapted to the ambient conditions (such as ambient brightness).
- the highly reflective layer In order for some light to fall on the camera, the highly reflective layer must transmit part of the light, although this proportion can be so small that these transmission losses cannot be perceived by the viewer.
- the second layer is preferably designed as an LCD film.
- a transparent, anti-reflective carrier material is applied to the second layer and / or behind the first layer.
- this carrier material also serves for passivation.
- the second layer or LCD film is mechanically firmly connected to the carrier material.
- the highly reflective layer has a transmittance of 1-10%, the transmission preferably being chosen to be as low as possible as long as sufficient brightness is achieved on the camera.
- the arrangement is assigned a device for detecting or determining the viewing angle of an observer.
- a viewing angle can be estimated, for example, by means of the mirror position and the sitting position.
- further photosensitive sensors are arranged in the edge regions of the arrangement, which are arranged in differently oriented funnel-shaped openings. In this way, a backward-looking direction can be detected. This data can be compared with the data from the camera and / or the device for detecting or determining the viewing angle.
- control signals of the control unit are designed as an AC voltage signal, preferably as a square wave voltage.
- the frequency is preferably selected to be greater than or equal to 50 Hz, so that the change cannot be perceived due to the inertia of the human eye, the pulse duty factor between pulse on and off time being variable depending on the degree of glare.
- the frequency is further preferably greater than / equal to 200 Hz, which enables an even finer gradation of the transmission.
- the layer is transparent when de-energized. This ensures that the function of the mirror is retained if the control unit and / or the supply voltage fails.
- the layer is preferably also electrically decoupled if a continuous radius is detected, for example due to a short circuit against the operating voltage.
- a manual switch is preferably provided, by means of which the control unit can be switched off.
- Fig. 1 is a schematic representation of a mirror arrangement according to the invention and Fig. 2 is a side view through the arrangement.
- the mirror arrangement 1 comprises a carrier layer 2, an LCD film 3, a highly reflective layer 4 and a further carrier layer 5, which is shown in FIG. 2.
- the LCD film 3 is segmented, the individual segments can be controlled independently of one another.
- the carrier layer 2, 5 consists of transparent, anti-reflective material in good optical quality.
- the LCD film 3 can be set by electrical control signals from a control unit 6 in the transmittance between 0 and 100%, the highly reflective layer 4 arranged behind it having, for example, a reflectivity of approximately 99%.
- a camera 7 is arranged behind the carrier layer 5 and records a complete image of the light striking the mirror 1. The camera 7 then delivers the data to the control unit 6, which then controls the LCD film 3.
- An incident light spot 8 first shines through the carrier layer 2 and the LCD film 3 and is then reflected as a light spot 9 on the highly reflective layer 4, about 1% being transmitted and falling on the camera 7.
- the light spot 8 incident on the focal plane of the camera 7 is evaluated with regard to its coordinates. Using the coordinates, the spatial segment of the incident light spot 8 and thus the spatial segment of the reflected light spot 9 can be determined on the basis of the law of reflection.
- the control unit 6 thus also knows the segment of the LCD film 3 where the reflected light spot 9 passes and can specifically reduce the transmittance of this segment if the brightness of the incident light spot 8 exceeds a threshold value.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Multimedia (AREA)
- Mechanical Engineering (AREA)
- Liquid Crystal (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002570164A CA2570164A1 (en) | 2004-06-17 | 2005-05-10 | Side-view or rear-view mirror for a motor vehicle |
US11/629,848 US20080013181A1 (en) | 2004-06-17 | 2005-05-10 | Exterior Mirror or Rear-View Mirror for a Motor Vehicle |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004029876A DE102004029876B4 (de) | 2004-06-17 | 2004-06-17 | Aussen- oder Rückspiegel für ein Kraftfahrzeug |
DE102004029876.9 | 2004-06-17 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005123453A1 true WO2005123453A1 (de) | 2005-12-29 |
Family
ID=34967903
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/005151 WO2005123453A1 (de) | 2004-06-17 | 2005-05-10 | Aussen- oder rückspiegel für ein kraftfahrzeug |
Country Status (4)
Country | Link |
---|---|
US (1) | US20080013181A1 (de) |
CA (1) | CA2570164A1 (de) |
DE (1) | DE102004029876B4 (de) |
WO (1) | WO2005123453A1 (de) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007144236A1 (de) * | 2006-06-12 | 2007-12-21 | Robert Bosch Gmbh | Einrichtung mit einer in eine rückspiegel-baugruppe eingebauten videokamera in einem fahrzeug |
DE102009019155A1 (de) | 2009-04-28 | 2010-11-04 | Hella Kgaa Hueck & Co. | Vorrichtung zur Anzeige der Rücksicht eines Fahrzeugs und Verfahren zum Abblenden eines Spiegelelements |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE202016008858U1 (de) * | 2015-03-12 | 2020-03-03 | Zf Active Safety And Electronics Us Llc | Glanzarme Gehäusebaugruppe für eine Kamera eines Fahrerassistenzsystems |
DE102018202387B3 (de) | 2018-02-16 | 2019-05-02 | Audi Ag | Rückspiegelanordnung |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5724187A (en) * | 1994-05-05 | 1998-03-03 | Donnelly Corporation | Electrochromic mirrors and devices |
US20020140215A1 (en) * | 1992-05-05 | 2002-10-03 | Breed David S. | Vehicle object detection system and method |
US20040021947A1 (en) * | 1993-02-26 | 2004-02-05 | Donnelly Corporation | Vehicle image capture system |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60117218A (ja) * | 1983-11-29 | 1985-06-24 | Nippon Denso Co Ltd | 液晶防眩型反射鏡 |
JPS6159301A (ja) * | 1984-08-30 | 1986-03-26 | Nippon Denso Co Ltd | 防眩型反射鏡制御装置 |
US5305012A (en) * | 1992-04-15 | 1994-04-19 | Reveo, Inc. | Intelligent electro-optical system and method for automatic glare reduction |
US5550677A (en) * | 1993-02-26 | 1996-08-27 | Donnelly Corporation | Automatic rearview mirror system using a photosensor array |
US5659423A (en) * | 1994-09-30 | 1997-08-19 | Donnelly Corporation | Modular variable reflectance mirror assembly |
US20020041442A1 (en) * | 2000-03-14 | 2002-04-11 | Witt Frank A. | Vehicle rearview mirror system |
DE10155358B4 (de) * | 2001-11-02 | 2005-10-13 | Deutsches Zentrum für Luft- und Raumfahrt e.V. | Außen- oder Rückspiegel für ein Kraftfahrzeug |
-
2004
- 2004-06-17 DE DE102004029876A patent/DE102004029876B4/de active Active
-
2005
- 2005-05-10 US US11/629,848 patent/US20080013181A1/en not_active Abandoned
- 2005-05-10 CA CA002570164A patent/CA2570164A1/en not_active Abandoned
- 2005-05-10 WO PCT/EP2005/005151 patent/WO2005123453A1/de active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20020140215A1 (en) * | 1992-05-05 | 2002-10-03 | Breed David S. | Vehicle object detection system and method |
US20040021947A1 (en) * | 1993-02-26 | 2004-02-05 | Donnelly Corporation | Vehicle image capture system |
US5724187A (en) * | 1994-05-05 | 1998-03-03 | Donnelly Corporation | Electrochromic mirrors and devices |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007144236A1 (de) * | 2006-06-12 | 2007-12-21 | Robert Bosch Gmbh | Einrichtung mit einer in eine rückspiegel-baugruppe eingebauten videokamera in einem fahrzeug |
DE102009019155A1 (de) | 2009-04-28 | 2010-11-04 | Hella Kgaa Hueck & Co. | Vorrichtung zur Anzeige der Rücksicht eines Fahrzeugs und Verfahren zum Abblenden eines Spiegelelements |
Also Published As
Publication number | Publication date |
---|---|
DE102004029876B4 (de) | 2009-01-29 |
CA2570164A1 (en) | 2005-12-29 |
US20080013181A1 (en) | 2008-01-17 |
DE102004029876A1 (de) | 2006-01-19 |
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