FR2730334A1 - Motor vehicle night vision system - Google Patents

Motor vehicle night vision system Download PDF

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Publication number
FR2730334A1
FR2730334A1 FR9501453A FR9501453A FR2730334A1 FR 2730334 A1 FR2730334 A1 FR 2730334A1 FR 9501453 A FR9501453 A FR 9501453A FR 9501453 A FR9501453 A FR 9501453A FR 2730334 A1 FR2730334 A1 FR 2730334A1
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FR
France
Prior art keywords
screen
mirror
driver
vehicle
image
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.)
Granted
Application number
FR9501453A
Other languages
French (fr)
Other versions
FR2730334B1 (en
Inventor
Jean Luc Brame
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.)
Automobiles Peugeot SA
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Automobiles Peugeot SA
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 Automobiles Peugeot SA filed Critical Automobiles Peugeot SA
Priority to FR9501453A priority Critical patent/FR2730334B1/en
Publication of FR2730334A1 publication Critical patent/FR2730334A1/en
Application granted granted Critical
Publication of FR2730334B1 publication Critical patent/FR2730334B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • B60R1/20—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
    • B60R1/22—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 for viewing an area outside the vehicle, e.g. the exterior of the vehicle
    • B60R1/23—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 for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view
    • B60R1/24—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 for viewing an area outside the vehicle, e.g. the exterior of the vehicle with a predetermined field of view in front of the vehicle
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
    • G02B23/12—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices with means for image conversion or intensification
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/10—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used
    • B60R2300/106—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of camera system used using night vision cameras
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R2300/00—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle
    • B60R2300/20—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used
    • B60R2300/205—Details of viewing arrangements using cameras and displays, specially adapted for use in a vehicle characterised by the type of display used using a head-up display

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Astronomy & Astrophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)

Abstract

The system includes the liquid crystal display screen (1) for displaying images taken by the on-board infrared camera. The screen (1) is arranged in a horizontal position and is associated with an inclined mirror (4) arranged so as to reflect the screen image towards the vehicles driver. Both the screen and the mirror are fitted near the lower edge of the windscreen (3). The LCD screen (1) is protected by a moving flap (5) and the mirror (4) is fixed to the inside face of the flap (5). An electric motor driven control system (7) regulates the height of the screen (1). The mirror (4) may be plane or convex.

Description

La présente invention concerne un dispositif de visualisation d'une image d'un paysage situé en avant d'un véhicule automobile. The present invention relates to a device for displaying an image of a landscape located in front of a motor vehicle.

Un tel dispositif est en particulier utilisé pour améliorer la vision de nuit et accroître ainsi la sécurité routière. Such a device is in particular used to improve night vision and thus increase road safety.

A cet effet, on connaît un dispositif comprenant une caméra, de préférence du type CCD, embarquée sur le véhicule et au moins un projecteur infrarouge également embarqué sur le véhicule et éclairant la scène en avant du véhicule. La caméra CCD, qui est sensible à l'infrarouge se situant audelà du spectre du visible, c'est-à-dire entre environ 0,8 et 1,1 îim, fournit au conducteur du véhicule une image vidéo du paysage éclairé visualisée sur un écran d'affichage. Ce dispositif connu permet au conducteur, lorsqu'il croise un véhicule venant en sens inverse, de conserver une visibilité de nuit d'environ 80 m ou plus sans éblouir le conducteur du véhicule circulant en sens inverse. To this end, a device is known comprising a camera, preferably of the CCD type, on board the vehicle and at least one infrared projector also on board the vehicle and lighting the scene in front of the vehicle. The CCD camera, which is sensitive to infrared beyond the visible spectrum, that is to say between approximately 0.8 and 1.1 µm, provides the driver of the vehicle with a video image of the lit landscape viewed on a display screen. This known device allows the driver, when he crosses an oncoming vehicle, to maintain a night visibility of approximately 80 m or more without dazzling the driver of the oncoming vehicle.

L'écran d'affichage de l'image prise par la caméra est généralement positionné juste devant le conducteur, par exemple entre le pare-brise et le haut du combiné. The screen for displaying the image taken by the camera is generally positioned just in front of the driver, for example between the windshield and the top of the handset.

Cette solution connue a pour inconvénients de créer un reflet parasite de l'écran dans le pare-brise et d'occasionner un problème d'accommodation du conducteur qui passe de la visualisation classique à travers le pare-brise à une visualisation à quelques centimètres dans l'écran. This known solution has the disadvantages of creating a parasitic reflection of the screen in the windshield and of causing a problem of accommodation of the driver who goes from the conventional display through the windshield to a display a few centimeters in the screen.

La présente invention a pour but d'éliminer les inconvénients ci-dessus en proposant un dispositif de visualisation d'une image d'un paysage situé en avant d'un véhicule automobile, comprenant un écran d'affichage de l'image prise par une caméra embarquée sur le véhicule et qui est caractérisé en ce que l'écran est disposé sensiblement horizontalement et est associé à un miroir incliné disposé de manière à réfléchir l'image de l'écran vers le conducteur. The present invention aims to eliminate the above drawbacks by providing a device for viewing an image of a landscape located in front of a motor vehicle, comprising a screen for displaying the image taken by a camera on board the vehicle which is characterized in that the screen is arranged substantially horizontally and is associated with an inclined mirror arranged so as to reflect the image of the screen towards the driver.

De préférence, l'écran et le miroir sont disposés au voisinage du bord inférieur du pare-brise du véhicule.  Preferably, the screen and the mirror are arranged in the vicinity of the lower edge of the vehicle windshield.

Avantageusement, l'écran est du type à cristaux liquides ou LCD. Advantageously, the screen is of the liquid crystal or LCD type.

L'écran est protégé par un volet mobile et, de préférence, le miroir est placé sur la face interne de ce volet. The screen is protected by a movable flap and, preferably, the mirror is placed on the internal face of this flap.

Le dispositif comprend également un moyen commandé, tel qu'un moteur électrique, permettant de régler la hauteur de l'écran d'affichage. The device also includes controlled means, such as an electric motor, for adjusting the height of the display screen.

Selon une variante de réalisation, le miroir est plan. According to an alternative embodiment, the mirror is plane.

Selon une autre variante de réalisation, le miroir est convexe afin d'éloigner l'image réfléchie de l'écran perçue par le conducteur. According to another alternative embodiment, the mirror is convex in order to distance the reflected image from the screen perceived by the driver.

Le dispositif comprend enfin un volet supplémentaire disposé de sorte que le conducteur n'ait pas une vision directe de l'écran d'affichage. The device finally comprises an additional flap arranged so that the driver does not have a direct view of the display screen.

L'invention sera mieux comprise et d'autres buts, caractéristiques, détails et avantages de celle-ci apparaîtront plus clairement dans la description explicative qui va suivre faite en référence aux dessins schématiques annexés donnés uniquement à titre d'exemple illustrant deux modes de réalisation de l'invention et dans lesquels
- la figure 1 représente le dispositif de visualisation conforme à l'invention en position inactive
- la figure 2 est une vue semblable à celle de la figure 1 et représentant le dispositif de l'invention en position active de fonctionnement ; et
- la figure 3 représente une variante de réalisation du dispositif de visualisation des figures 1 et 2.The invention will be better understood and other objects, characteristics, details and advantages thereof will appear more clearly in the explanatory description which follows, made with reference to the appended schematic drawings given solely by way of example illustrating two embodiments of the invention and in which
- Figure 1 shows the display device according to the invention in the inactive position
- Figure 2 is a view similar to that of Figure 1 and showing the device of the invention in the active operating position; and
FIG. 3 represents an alternative embodiment of the display device of FIGS. 1 and 2.

En se reportant aux figures 1 et 2, la référence 1 désigne un écran d'affichage du type à cristaux liquides ou
LCD et faisant partie d'un dispositif de visualisation d'une image d'un paysage situé en avant du véhicule automobile.With reference to FIGS. 1 and 2, the reference 1 designates a display screen of the liquid crystal type or
LCD and forming part of a device for displaying an image of a landscape located in front of the motor vehicle.

Un tel dispositif comprend une caméra (non représentée), de préférence du type CCD, embarquée sur le véhicule et fournissant au conducteur une image vidéo du paysage par l'intermédiaire de l'écran d'affichage 1.  Such a device comprises a camera (not shown), preferably of the CCD type, on board the vehicle and providing the driver with a video image of the landscape via the display screen 1.

Dans le but en particulier d'améliorer la vision de nuit, le dispositif comprend au moins un projecteur infrarouge éclairant le paysage de façon à ne pas gêner un conducteur d'un véhicule venant en sens inverse. Ainsi, lorsque le conducteur croise un véhicule venant en sens inverse, le dispositif de visualisation permet de conserver une visibilité pouvant aller jusqu'à environ 80 m ou plus, largement supérieure à celle d'environ 25 à 35 m lorsqu'il croise habituellement avec ses feux de croisement le véhicule venant en sens inverse. With the particular aim of improving night vision, the device comprises at least one infrared projector illuminating the landscape so as not to hinder a driver of an oncoming vehicle. Thus, when the driver crosses an oncoming vehicle, the display device makes it possible to maintain a visibility of up to about 80 m or more, much greater than that of about 25 to 35 m when he usually crosses with its dipped beam the oncoming vehicle.

Selon l'invention, l'écran 1 est disposé sensiblement horizontalement sur ou dans la planche de bord 2 du véhicule et de préférence au voisinage du bord inférieur du pare-brise 3 de façon à être le plus loin possible du conducteur. Un miroir 4 est associé à l'écran 1 de manière à réfléchir l'image de l'écran 1 vers le conducteur. According to the invention, the screen 1 is arranged substantially horizontally on or in the dashboard 2 of the vehicle and preferably in the vicinity of the lower edge of the windshield 3 so as to be as far as possible from the driver. A mirror 4 is associated with the screen 1 so as to reflect the image of the screen 1 towards the driver.

Le miroir 4 est monté pivotant de façon à occuper une position inactive sensiblement horizontale au-dessus de l'écran 1 comme représenté en figure 1 ou une position inclinée active de réflexion de l'écran 1 vers le conducteur comme représenté en figure 2. The mirror 4 is pivotally mounted so as to occupy a substantially horizontal inactive position above the screen 1 as shown in FIG. 1 or an active inclined position of reflection from the screen 1 towards the conductor as shown in FIG. 2.

L'écran 1 peut être protégé par un volet mobile 5 et, de préférence, le miroir 4 est placé sur la face interne de ce volet. L'ensemble constitué par le miroir 4 et le volet mobile 5 est représenté simplement aux figures 1 et 2 par un même élément. En position inactive du dispositif, le volet 5 camoufle de jour l'écran 1, de la sorte l'esthétisme d'ensemble est conservé et il protège de plus l'écran 1 du soleil (les écrans du type LCD ne supportent pas très bien les températures élevées). The screen 1 can be protected by a movable flap 5 and, preferably, the mirror 4 is placed on the internal face of this flap. The assembly constituted by the mirror 4 and the movable flap 5 is represented simply in FIGS. 1 and 2 by the same element. In the inactive position of the device, the shutter 5 camouflages the screen 1 during the day, so the overall appearance is preserved and it also protects the screen 1 from the sun (LCD type screens do not support very well high temperatures).

Un moteur électrique 6 est commandé pour permettre le pivotement du volet 5 de support du miroir 4 et amener ce dernier en position active ou inactive de fonctionnement. An electric motor 6 is controlled to allow pivoting of the flap 5 for supporting the mirror 4 and bringing the latter into the active or inactive operating position.

Un autre moteur électrique 7, associé à l'écran 1, est commandé de façon à régler la hauteur de l'écran 1 et permettre ainsi à des conducteurs de tailles différentes un confort équivalent.  Another electric motor 7, associated with the screen 1, is controlled so as to adjust the height of the screen 1 and thus allow conductors of different sizes equivalent comfort.

Le dispositif de l'invention peut être amélioré en remplaçant le miroir plan 4 par un miroir sphérique convexe judicieusement choisi pour réduire la longueur par rapport au miroir plan et augmenter la vision directe et qui permet une focalisation plus lointaine (au bout du capot moteur, par exemple) pour une accommodation encore plus confortable. The device of the invention can be improved by replacing the plane mirror 4 with a convex spherical mirror judiciously chosen to reduce the length relative to the plane mirror and increase direct vision and which allows more distant focusing (at the end of the engine hood, for example) for even more comfortable accommodation.

La figure 3 montre une variante de réalisation selon laquelle, pour éviter la vision directe de l'écran 1, un petit volet 8 est disposé entre l'écran 1 et le conducteur. Figure 3 shows an alternative embodiment according to which, to avoid direct vision of the screen 1, a small flap 8 is arranged between the screen 1 and the conductor.

Le dispositif conforme à l'invention permet, de jour, la vision directe de la scène en avant du véhicule et, de nuit, de voir la scène directement à travers le pare-brise et de compléter l'information de cette scène par un léger mouvement des yeux du conducteur vers le miroir 4 en position active. De plus, l'image créée par le miroir 4 éloigne l'image des yeux du conducteur et va donc dans le sens d'une accommodation plus aisée du conducteur.  The device according to the invention allows, by day, the direct vision of the scene in front of the vehicle and, at night, to see the scene directly through the windshield and to supplement the information of this scene by a light movement of the driver's eyes towards the mirror 4 in the active position. In addition, the image created by the mirror 4 distances the image from the driver's eyes and therefore goes in the direction of easier accommodation for the driver.

Claims (9)

REVENDICATIONS 1. Dispositif de visualisation d'une image d'un paysage situé en avant d'un véhicule automobile, comprenant un écran (1) d'affichage de l'image prise par une caméra embarquée sur le véhicule, caractérisé en ce que l'écran (1) est disposé sensiblement horizontalement et est associé à un miroir incliné (4) disposé de manière à réfléchir l'image de l'écran (1) vers le conducteur. 1. Device for displaying an image of a landscape located in front of a motor vehicle, comprising a screen (1) for displaying the image taken by a camera on board the vehicle, characterized in that the screen (1) is arranged substantially horizontally and is associated with an inclined mirror (4) arranged so as to reflect the image of the screen (1) towards the conductor. 2. Dispositif selon la revendication 1, caractérisé en ce que l'écran (1) et le miroir (4) sont disposés au voisinage du bord inférieur du pare-brise (3) du véhicule. 2. Device according to claim 1, characterized in that the screen (1) and the mirror (4) are arranged in the vicinity of the lower edge of the windshield (3) of the vehicle. 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que l'écran (1) est du type à cristaux liquides ou LCD. 3. Device according to claim 1 or 2, characterized in that the screen (1) is of the liquid crystal or LCD type. 4. Dispositif selon l'une des revendications précédentes, caractérisé en ce que l'écran (1) est protégé par un volet mobile (5). 4. Device according to one of the preceding claims, characterized in that the screen (1) is protected by a movable flap (5). 5. Dispositif selon la revendication 4, caractérisé en ce que le miroir (4) est placé sur la face interne du volet mobile (5). 5. Device according to claim 4, characterized in that the mirror (4) is placed on the internal face of the movable flap (5). 6. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un moyen commandé (7), tel qu'un moteur électrique, permettant de régler la hauteur de l'écran (1). 6. Device according to one of the preceding claims, characterized in that it comprises a controlled means (7), such as an electric motor, for adjusting the height of the screen (1). 7. Dispositif selon l'une des revendications précédentes, caractérisé en ce que le miroir (4) est plan. 7. Device according to one of the preceding claims, characterized in that the mirror (4) is planar. 8. Dispositif selon l'une des revendications 1 à 6, caractérisé en ce que le miroir (4) est convexe afin d'éloigner l'image réfléchie de l'écran (1) perçue par le conducteur. 8. Device according to one of claims 1 to 6, characterized in that the mirror (4) is convex in order to distance the reflected image from the screen (1) perceived by the driver. 9. Dispositif selon l'une des revendications précédentes, caractérisé en ce qu'il comprend un volet supplémentaire (8) disposé de sorte que le conducteur n'ait pas une vision directe de l'écran (1).  9. Device according to one of the preceding claims, characterized in that it comprises an additional flap (8) arranged so that the driver does not have a direct view of the screen (1).
FR9501453A 1995-02-08 1995-02-08 ARRANGEMENT FOR VIEWING AN IMAGE OF A LANDSCAPE LOCATED IN FRONT OF A MOTOR VEHICLE Expired - Fee Related FR2730334B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9501453A FR2730334B1 (en) 1995-02-08 1995-02-08 ARRANGEMENT FOR VIEWING AN IMAGE OF A LANDSCAPE LOCATED IN FRONT OF A MOTOR VEHICLE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9501453A FR2730334B1 (en) 1995-02-08 1995-02-08 ARRANGEMENT FOR VIEWING AN IMAGE OF A LANDSCAPE LOCATED IN FRONT OF A MOTOR VEHICLE

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FR2730334A1 true FR2730334A1 (en) 1996-08-09
FR2730334B1 FR2730334B1 (en) 1997-03-14

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003053742A1 (en) * 2001-12-20 2003-07-03 Bendix Commercial Vehicle Systems Llc Mounting assembly for night vision display unit
WO2016170191A1 (en) * 2015-04-24 2016-10-27 Valeo Comfort And Driving Assistance Display device for a motor vehicle

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JPS61268534A (en) * 1985-05-21 1986-11-28 Nissan Motor Co Ltd Head-up display device
JPS6390445A (en) * 1986-10-02 1988-04-21 Nissan Motor Co Ltd Vehicle head-up display provided with auxiliary display source
DE4032927A1 (en) * 1990-10-17 1992-04-30 Bosch Gmbh Robert Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission
EP0577501A1 (en) * 1992-06-30 1994-01-05 Valeo Vision Method and device for long distance night vision for motor vehicles
JPH06233306A (en) * 1993-02-03 1994-08-19 Nissan Motor Co Ltd Vehicle display device
FR2705293A1 (en) * 1993-05-18 1994-11-25 Valeo Vision System for assisting vision in a motor vehicle

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Publication number Priority date Publication date Assignee Title
JPS61268534A (en) * 1985-05-21 1986-11-28 Nissan Motor Co Ltd Head-up display device
JPS6390445A (en) * 1986-10-02 1988-04-21 Nissan Motor Co Ltd Vehicle head-up display provided with auxiliary display source
DE4032927A1 (en) * 1990-10-17 1992-04-30 Bosch Gmbh Robert Motor vehicle driver's vision enhancement by IR imaging - involves head=up display virtual image converted from reflection of IR component of headlamp emission
EP0577501A1 (en) * 1992-06-30 1994-01-05 Valeo Vision Method and device for long distance night vision for motor vehicles
JPH06233306A (en) * 1993-02-03 1994-08-19 Nissan Motor Co Ltd Vehicle display device
FR2705293A1 (en) * 1993-05-18 1994-11-25 Valeo Vision System for assisting vision in a motor vehicle

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Title
DATABASE WPI Week 9438, Derwent World Patents Index; AN 94-306943 *
PATENT ABSTRACTS OF JAPAN vol. 11, no. 128 (M - 583) 22 April 1987 (1987-04-22) *
PATENT ABSTRACTS OF JAPAN vol. 12, no. 321 (M - 736)<3168> 31 August 1988 (1988-08-31) *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2003053742A1 (en) * 2001-12-20 2003-07-03 Bendix Commercial Vehicle Systems Llc Mounting assembly for night vision display unit
US6909408B2 (en) 2001-12-20 2005-06-21 Bendix Commercial Vehicle Systems Llc Mounting assembly for night vision display unit
WO2016170191A1 (en) * 2015-04-24 2016-10-27 Valeo Comfort And Driving Assistance Display device for a motor vehicle
FR3035519A1 (en) * 2015-04-24 2016-10-28 Valeo Comfort & Driving Assistance DISPLAY DEVICE FOR MOTOR VEHICLE

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