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WO2001079031A1 - Miroir retroviseur - Google Patents

Miroir retroviseur Download PDF

Info

Publication number
WO2001079031A1
WO2001079031A1 PCT/SE2001/000829 SE0100829W WO0179031A1 WO 2001079031 A1 WO2001079031 A1 WO 2001079031A1 SE 0100829 W SE0100829 W SE 0100829W WO 0179031 A1 WO0179031 A1 WO 0179031A1
Authority
WO
WIPO (PCT)
Prior art keywords
mirror
vehicle
windows
incident light
driver
Prior art date
Application number
PCT/SE2001/000829
Other languages
English (en)
Inventor
Bo Norell
Original Assignee
Norells Sweden Ab
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 Norells Sweden Ab filed Critical Norells Sweden Ab
Priority to AU2001248973A priority Critical patent/AU2001248973A1/en
Publication of WO2001079031A1 publication Critical patent/WO2001079031A1/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
    • B60R1/12—Mirror assemblies combined with other articles, e.g. clocks
    • 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
    • B60R2001/1215—Mirror assemblies combined with other articles, e.g. clocks with information displays

Definitions

  • the present invention relates to a rearview display mirror for a vehicle, wherein patterns conveying information such as text, markings or symbols on the mirror, are made visible to the driver during driving in darkness by incident light emitted from external light sources, notably following vehicles, without the need for energy supply from the own vehicle.
  • patterns conveying information such as texts, markings or symbols, in a rearview mirror of a vehicle.
  • Such patterns may permanently or dynamically provide status information on the vehicle's operational conditions, or they may be designed to provide warning and alert symbols that are addressed to the driver of the vehicle, or a driver of a following vehicle. Electric power supplied from a battery or a generator is conventionally required to activate such patterns in darkness.
  • the mirror's overall specular reflector coating is locally reduced or removed in patterns representing text or symbols, or minor openings that are void, or backed by, LCD patterns (all of these features are here called “windows").
  • windows Means to improve the visibility of such windows have been published, as have contrary means to hide windows when to be ignored.
  • Such measures are sometimes combined with means to electrochromically control the reflectance of the entire mirror surface and with means of clearing the mirror surface from frost or mist by heating.
  • WO 96/ 14222 Both Ab+Ba+Bb - an internally illuminated turn sign visible outside the vehicle but not for the driver, and Aa+Ba+Bb - internally illuminated symbols in the mirror visible to the driver but not outside the vehicle:
  • the present invention aims to provide a low cost solution for a passive signal mirror that is able to display information, addressed to the driver, on a rearview mirror of a vehicle during the most critical conditions of night driving.
  • the invention suggests a rearview mirror provided with patterns conveying information that by suitable means are made visible during night driving by incident light from following vehicles.
  • the patterns in question may include permanent warning texts, markings and alert signals addressed to the operator or driver of the vehicle, and may also include static status information.
  • a rearview display mirror comprises transparent windows by locally removing metal in a light reflective coating of the mirror and so creating a transparent pattern. Said windows define patterns addressed to the driver of a vehicle. Further, an additional material layer of high reflectivity is disposed adjacent to and behind said reflective coating, and formed at least to cover the windows, said additional layer being ar- ranged to be exposed by incident light and operative for illumination of the symbols by reflecting the incident light from a following vehicle through the windows and directing the reflected light towards the driver.
  • the additional reflective layer is carried on a heater foil that is attached to a backside of the mirror.
  • the invention is preferably applied in an external rearview mirror of a vehicle, but may also be applied in an internal rearview mirror or in any other application where incident light may be utilized to render a pattern of messages, markings and symbols clearly visible in darkness when activated by incident light.
  • the patterns may also include dynamic or condition triggered status information in association with a liquid-crystal layer that is operative as a controllable screen for incident light.
  • a liquid crystal layer is introduced in front of the transparent windows, or in front of the additional reflective layer, in order to control the intensity of the reflected light, generally or in a programmed pattern.
  • Fig. 1 is a front elevation view of a rearview display mirror on a motor vehicle, illustrating symbols for warning or alerting of the driver;
  • Fig. 2 is a sectional view of a rearview mirror according to the invention.
  • Fig. 3 is a corresponding view of a second embodiment of the mirror.
  • Fig. 4 is another front elevation view, showing schematically a modified em- bodiment of the mirror.
  • Fig. 1 shows schematically a rearview mirror 1 for a motor vehicle.
  • the patterns 2, 3 and 4 are introduced for alerting the driver or operator of the vehicle.
  • the text 2 is intended to make the driver aware of the distance distortion that is inherent in the mirror image.
  • the line 3 separates the wide-angle field of the mirror from the planar or substantially planar field.
  • the borderline 4 is introduced in order to define the outline of the mirror image when driving in darkness.
  • the shown and mentioned patterns are only exemplifying.
  • Fig. 2 shows a section of an embodiment of the inventive mirror.
  • a glass plate 5 carries, on one side thereof, a first reflective coating 6 arranged as a light reflective coating or mirror coating 6.
  • Said mirror coating 6 may be applied to either side of the glass plate, i.e. to the exposed front side or first side, or the opposite second side or back side of the mirror glass.
  • Transparent windows 7 in the mirror coating 6 define patterns as desired, e.g. the above mentioned symbols or other patterns. Said windows 7 are conveniently formed by subjecting the coating 6 to an etching or laser abrasion op- eration.
  • the coating 6 may be a metal coating as conventional.
  • a layer 8 of highly reflective material Adjacent to and behind the glass plate 5 and mirror coating 6, as seen in the direction of the incident light L, is arranged a layer 8 of highly reflective material.
  • the reflective material 8 is arranged to be exposed by the incident light L through the windows 7 and is able to efficiently reflect the incident light towards the driver by returning and directing the incident light through the windows.
  • the incident light is passively directed through the windows for alerting the driver, and informing him about a vehicle that is closing up from behind.
  • the reflective material 8 is preferably a material having directive light reflection properties. In this context, this should be interpreted as a material from which incident light is directed towards the driver.
  • the reflective material 8 may advantageously be a reflex material incorporating a plurality of light reflecting surfaces, that are obliquely oriented relative to the orientation of the mirror in a saw-tooth formation. The incident light, reaching the mirror from a vehicle that is closing up from behind, is thus reflected by the reflective material 8 and directed towards the driver through the windows 7.
  • the expression “reflectivity” is considered to be the ratio of energy of the reflected light beam to that of the incident beam.
  • the expres- sion "transparent window” should be understood to include also a window that is translucent, i.e. substantially transparent or semi-transparent.
  • the highly reflective material 8 is arranged at least to cover the windows 7, and may be carried by an adhesive-coated foil or carrier member 9 that is arranged to adhere to the backside of the metalized glass 5,6, at least outside the periphery of the opening 7.
  • the reflective material 8 may be realized as particles or pigments mixed with a binding medium to be printed on the carrier 9.
  • the reflective material 8 is carried by a heater foil 10, arranged to adhere to the backside of the metalized glass 5,6. Also in the embodiment of fig. 3, the reflective material 8 may be realized as printed areas on the heater foil 10.
  • the reflective material 8 may carry an adhesive for direct attachment to the mirror glass 5, exposed by the opening 7 that is formed in the mirror coating 6.
  • a rearview display mirror for a vehicle, the mirror being provided with patterns that are visible in daylight, while in darkness these patterns are rendered luminous when illuminated by incident light preferentially from behind the vehicle, for alerting the driver of the vehicle.
  • the disclosed mirror is a low cost, zero-energy solution for providing a display mirror carrying the most adequate security information addressed to the driver, both at day-light driving and in darkness.
  • the mirror may be structured also to display an operational condition or dynamic status information.
  • the screen 1 1 when the screen 1 1 is electrically associated with a turn signal, e.g., the screen may be controlled to be transparent and allow the full intensity of the reflected light to be received by the driver only when the turn signal is on.
  • the passive symbols of the display mirror may also be arranged to dynamically display conditional status information 12, e.g. in a sideview signal mirror.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Mechanical Engineering (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
  • Rear-View Mirror Devices That Are Mounted On The Exterior Of The Vehicle (AREA)

Abstract

L'invention concerne un miroir rétroviseur qui comporte un motif de fenêtres transparentes (7) formées dans un revêtement réfléchissant clair (6) du miroir. Le motif de fenêtres définit des symboles d'informations adressées au conducteur d'un véhicule. Une couche de matière additionnelle (8) à pouvoir réfléchissant élevé est disposée derrière le revêtement de miroir pour être exposée par une lumière incidente (L) à travers les fenêtres, et sert à illuminer le motif de fenêtres en retournant la lumière incidente (L) à travers les fenêtres selon un angle réflexe supérieur ou égal à 20° par rapport à la lumière incidente.
PCT/SE2001/000829 2000-04-14 2001-04-12 Miroir retroviseur WO2001079031A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001248973A AU2001248973A1 (en) 2000-04-14 2001-04-12 Rearview display mirror

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0001437A SE0001437D0 (sv) 2000-04-14 2000-04-14 Rearview display mirror
SE0001437-3 2000-04-14

Publications (1)

Publication Number Publication Date
WO2001079031A1 true WO2001079031A1 (fr) 2001-10-25

Family

ID=20279365

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/000829 WO2001079031A1 (fr) 2000-04-14 2001-04-12 Miroir retroviseur

Country Status (3)

Country Link
AU (1) AU2001248973A1 (fr)
SE (1) SE0001437D0 (fr)
WO (1) WO2001079031A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720848A1 (de) * 1987-06-24 1989-01-05 Bosch Gmbh Robert Anzeigevorrichtung in kraftfahrzeugen
US4906085A (en) * 1986-06-30 1990-03-06 Kabushiki Kaisha Tokai Rika Denki Seisakusho Sideview mirror assembly with regulating filter using sunlight for automobiles
WO1996014222A1 (fr) * 1994-11-03 1996-05-17 United Technologies Automotive Systems, Inc. Retroviseur exterieur avec afficheur d'informations
US5689370A (en) * 1995-08-30 1997-11-18 Gentex Corporation Image/information displays on electro-optic devices
DE19631409A1 (de) * 1996-08-05 1998-02-12 Juergen Dipl Ing Heinz Baugruppe mit veränderbarer Transmission und Reflexbeschichtung
US6005724A (en) * 1998-10-05 1999-12-21 K. W. Muth Company, Inc. Mirror coating, mirror utilizing same, and a mirror assembly
DE19843189A1 (de) * 1998-09-14 2000-03-16 Bar Yoav Yigal Einrichtung zur Anzeige von Betriebs- oder Funktionszuständen bei Kraftfahrzeugen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4906085A (en) * 1986-06-30 1990-03-06 Kabushiki Kaisha Tokai Rika Denki Seisakusho Sideview mirror assembly with regulating filter using sunlight for automobiles
DE3720848A1 (de) * 1987-06-24 1989-01-05 Bosch Gmbh Robert Anzeigevorrichtung in kraftfahrzeugen
WO1996014222A1 (fr) * 1994-11-03 1996-05-17 United Technologies Automotive Systems, Inc. Retroviseur exterieur avec afficheur d'informations
US5689370A (en) * 1995-08-30 1997-11-18 Gentex Corporation Image/information displays on electro-optic devices
DE19631409A1 (de) * 1996-08-05 1998-02-12 Juergen Dipl Ing Heinz Baugruppe mit veränderbarer Transmission und Reflexbeschichtung
DE19843189A1 (de) * 1998-09-14 2000-03-16 Bar Yoav Yigal Einrichtung zur Anzeige von Betriebs- oder Funktionszuständen bei Kraftfahrzeugen
US6005724A (en) * 1998-10-05 1999-12-21 K. W. Muth Company, Inc. Mirror coating, mirror utilizing same, and a mirror assembly

Also Published As

Publication number Publication date
SE0001437D0 (sv) 2000-04-14
AU2001248973A1 (en) 2001-10-30

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