DE4420789A1 - Electronically-dimming driving mirror for motor vehicle - Google Patents

Electronically-dimming driving mirror for motor vehicle

Info

Publication number
DE4420789A1
DE4420789A1 DE19944420789 DE4420789A DE4420789A1 DE 4420789 A1 DE4420789 A1 DE 4420789A1 DE 19944420789 DE19944420789 DE 19944420789 DE 4420789 A DE4420789 A DE 4420789A DE 4420789 A1 DE4420789 A1 DE 4420789A1
Authority
DE
Germany
Prior art keywords
motor vehicle
mirror
electronically
driving mirror
dimming driving
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Withdrawn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
DE19944420789
Other languages
German (de)
Inventor
Raimund Dr Schmitz
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DE19944420789 priority Critical patent/DE4420789A1/en
Publication of DE4420789A1 publication Critical patent/DE4420789A1/en
Withdrawn legal-status Critical Current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

Abstract

The driving mirror prevents the driver from being blinded by the headlights of following vehicles when driving at night or from a bright rear sunset. The control of the liq. crystal elements for automatic matching to the prevailing light conditions is achieved by front and rear sensors with electronics for differential measuring. If max. light absorption condition arises, a reflective gas surface in-front of the LCD elements serves as the rear view mirror.

Description

Stand der Technik ggf. mit FundstellenState of the art, if applicable, with sites

Kraftfahrzeugführer werden bei Nacht durch sich in den Kraft­ fahrzeugspiegeln widerspiegelnde Scheinwerfer von nach­ folgenden Fahrzeugen geblendet oder wenn eine tiefstehende Sonne von hinten blendet. Zur Reduzierung der Blendwirkung werden Kraftfahrzeugspiegel in mechanisch abblendbarer Aus­ führung angeboten, die z. B. aus einem in der Halterung klappbaren Spiegel bestehen und einer davor in der Halterung fixierten spiegelnden Glasfläche, die nach dem Wegklappen des Spiegels mit ihrer reduzierten Reflexionswirkung die Blendwirkung herabsetzt.Drivers become self-sufficient at night headlights reflecting vehicle mirrors from to following vehicles blinded or if a low Sun glare from behind. To reduce glare are motor vehicle mirrors in mechanically dimmable leadership offered, the z. B. from a in the holder foldable mirror and one in front of the bracket fixed reflective glass surface after folding away of the mirror with its reduced reflection effect Reduces glare.

Problemproblem

Zum Abblenden des Spiegels ist die mechanische Betätigung einer Umklappvorrichtung notwendig, was entweder die direk­ te Erreichbarkeit mit der Hand durch den Fahrer oder einen komplizierten Fernsteuermechanismus voraussetzt. Daher sind im allgemeinen die Außenspiegel von Kraftfahrzeugen nicht mit Abblendvorrichtungen ausgestattet. Desweiteren sind zum Abblenden von drei Spiegeln drei Handgriffe notwendig.The mechanical actuation is used to stop the mirror a folding device necessary, which is either the direct accessibility by hand by the driver or a driver complicated remote control mechanism. Therefore are generally not the exterior mirrors of motor vehicles equipped with dimming devices. Furthermore, are for Dimming three mirrors requires three steps.

Lösungsolution

Vor der eigentlichen verspiegelten Spiegelfläche werden Flüssigkeitskristallelemente (LCD-Elemente) angeordnet, die durch elektronische Ansteuerung ihre Lichtdurchlässigkeit verändern. Die Lichtdurchlässigkeit und damit der Abblen­ dungsgrad kann durch eine entsprechende elektronische An­ steuerung der LCD-Elemente stufenlos variiert werden. Bei maximaler Lichtabsorption wirkt eine vor den LCD-Elemen­ ten angeordnete spiegelnde Glasfläche als Rückspiegel.In front of the actual mirrored mirror surface Liquid crystal elements (LCD elements) arranged that their light transmission through electronic control change. The translucency and thus the deflection Degree of efficiency can be achieved through a corresponding electronic application control of the LCD elements can be varied continuously. At maximum light absorption acts in front of the LCD elements arranged mirrored glass surface as a rear-view mirror.

Erreichte VorteileAchieved advantages

  • 1. Mechanisch nicht erreichbare Außenspiegel können elek­ tronisch einfach und schnell abgeblendet werden.1. Mechanically inaccessible exterior mirrors can elec can be dimmed quickly and easily.
  • 2. Die Spiegel können stufenlos abgeblendet werden.2. The mirrors can be dimmed continuously.
  • 3. Alle Spiegel eines Kraftfahrzeuges können mit einer einzi­ gen Schalterbetätigung abgeblendet werden.3. All mirrors of a motor vehicle can with a single be dimmed when the switch is actuated.
Weitere Ausgestaltung der ErfindungFurther embodiment of the invention

Durch eine Lichtsensorsteuerung (Differenzmessung vorne/hinten) mit nachgeschalteter Elektronik kann der Ab­ blendungsgrad aller Spiegel eines Fahrzeuges automatisch den jeweiligen Lichtverhältnissen angepaßt werden.Through a light sensor control (difference measurement front / rear) with downstream electronics, the Ab glare level of all mirrors of a vehicle automatically be adapted to the respective lighting conditions.

Claims (2)

1. Kraftfahrzeugspiegel mit Halterung und Spiegelfläche, dadurch gekennzeichnet, daß vor der Spiegelfläche Flüssigkeitskristallelemente (LCD- Elemente) angeordnet sind, deren Lichtdurchlässigkeit durch elektronische Ansteuerung verändert werden kann.1. Motor vehicle mirror with holder and mirror surface, characterized in that liquid crystal elements (LCD elements) are arranged in front of the mirror surface, the light transmittance can be changed by electronic control. 2. Abblendbarer Kraftfahrzeugspiegel nach Patenanspruch 1, dadurch gekennzeichnet, daß die Ansteuerung der LCD-Elemente zur automatischen Anpassung an die jeweiligen Lichtverhältnisse über Lichtsensoren (Differenzmessung vorne/hinten) mit nachgeschalteter Elektronik erfolgt.2. Dimmable motor vehicle mirror according to patent claim 1, characterized, that the control of the LCD elements for automatic Adaptation to the respective lighting conditions Light sensors (differential measurement front / rear) with downstream electronics.
DE19944420789 1994-06-15 1994-06-15 Electronically-dimming driving mirror for motor vehicle Withdrawn DE4420789A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19944420789 DE4420789A1 (en) 1994-06-15 1994-06-15 Electronically-dimming driving mirror for motor vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19944420789 DE4420789A1 (en) 1994-06-15 1994-06-15 Electronically-dimming driving mirror for motor vehicle

Publications (1)

Publication Number Publication Date
DE4420789A1 true DE4420789A1 (en) 1995-12-21

Family

ID=6520573

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19944420789 Withdrawn DE4420789A1 (en) 1994-06-15 1994-06-15 Electronically-dimming driving mirror for motor vehicle

Country Status (1)

Country Link
DE (1) DE4420789A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008125185A1 (en) * 2007-04-12 2008-10-23 Gm Global Technology Operations, Inc. Self-dimming mirror in a motor vehicle
DE10039760B4 (en) * 2000-08-16 2011-03-03 Volkswagen Ag Display device for displaying the traffic space around a vehicle

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2421485A1 (en) * 1973-05-03 1974-11-21 Fiat Spa UMBRELLA OF CHANGEABLE LIGHT TRANSMISSION
DE2416172A1 (en) * 1974-04-03 1975-10-16 Volkswagenwerk Ag Anti-dazzle rear view mirror - with liquid crystal layer in mirror sandwich coupled to light detector
DE2442998A1 (en) * 1974-09-07 1976-03-18 Josef Gail Lens for welder's goggles or mask or sunglasses - for automatic inertia-free control of fluctuations in light intensity
JPS536057A (en) * 1976-07-07 1978-01-20 Canon Inc Shielding and protecting device
DE2934451A1 (en) * 1979-08-25 1981-03-12 Vdo Adolf Schindling Ag, 6000 Frankfurt DEGREBABLE REAR MIRROR, ESPECIALLY FOR MOTOR VEHICLES.
GB2156295A (en) * 1984-03-28 1985-10-09 Tokai Rika Co Ltd Glare preventive rear view mirror

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2421485A1 (en) * 1973-05-03 1974-11-21 Fiat Spa UMBRELLA OF CHANGEABLE LIGHT TRANSMISSION
DE2416172A1 (en) * 1974-04-03 1975-10-16 Volkswagenwerk Ag Anti-dazzle rear view mirror - with liquid crystal layer in mirror sandwich coupled to light detector
DE2442998A1 (en) * 1974-09-07 1976-03-18 Josef Gail Lens for welder's goggles or mask or sunglasses - for automatic inertia-free control of fluctuations in light intensity
JPS536057A (en) * 1976-07-07 1978-01-20 Canon Inc Shielding and protecting device
DE2934451A1 (en) * 1979-08-25 1981-03-12 Vdo Adolf Schindling Ag, 6000 Frankfurt DEGREBABLE REAR MIRROR, ESPECIALLY FOR MOTOR VEHICLES.
GB2156295A (en) * 1984-03-28 1985-10-09 Tokai Rika Co Ltd Glare preventive rear view mirror

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10039760B4 (en) * 2000-08-16 2011-03-03 Volkswagen Ag Display device for displaying the traffic space around a vehicle
WO2008125185A1 (en) * 2007-04-12 2008-10-23 Gm Global Technology Operations, Inc. Self-dimming mirror in a motor vehicle
GB2471034A (en) * 2007-04-12 2010-12-15 Gm Global Tech Operations Inc Self-dimming mirror in a motor vehicle
GB2471034B (en) * 2007-04-12 2012-02-22 Gm Global Tech Operations Inc Self-dimming mirror in a motor vehicle

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
8139 Disposal/non-payment of the annual fee