FR2730334A1 - Motor vehicle night vision system - Google Patents
Motor vehicle night vision system Download PDFInfo
- 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
- Authority
- 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
Links
- 230000004297 night vision Effects 0.000 title description 3
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 4
- 239000004020 conductor Substances 0.000 claims description 4
- 230000004308 accommodation Effects 0.000 description 3
- 230000004438 eyesight Effects 0.000 description 3
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000001429 visible spectrum Methods 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
- B60R1/20—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
Landscapes
- 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
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)
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 |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2730334A1 true FR2730334A1 (en) | 1996-08-09 |
FR2730334B1 FR2730334B1 (en) | 1997-03-14 |
Family
ID=9475950
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR9501453A Expired - Fee Related FR2730334B1 (en) | 1995-02-08 | 1995-02-08 | ARRANGEMENT FOR VIEWING AN IMAGE OF A LANDSCAPE LOCATED IN FRONT OF A MOTOR VEHICLE |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2730334B1 (en) |
Cited By (2)
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 |
Citations (6)
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 |
-
1995
- 1995-02-08 FR FR9501453A patent/FR2730334B1/en not_active Expired - Fee Related
Patent Citations (6)
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 |
Non-Patent Citations (3)
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)
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 |
Also Published As
Publication number | Publication date |
---|---|
FR2730334B1 (en) | 1997-03-14 |
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Legal Events
Date | Code | Title | Description |
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ST | Notification of lapse |
Effective date: 20141031 |