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WO2008052730A1 - Système d'affichage pour véhicule ou affichage par projection pour un véhicule automobile et procédé d'étalonnage - Google Patents

Système d'affichage pour véhicule ou affichage par projection pour un véhicule automobile et procédé d'étalonnage Download PDF

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Publication number
WO2008052730A1
WO2008052730A1 PCT/EP2007/009367 EP2007009367W WO2008052730A1 WO 2008052730 A1 WO2008052730 A1 WO 2008052730A1 EP 2007009367 W EP2007009367 W EP 2007009367W WO 2008052730 A1 WO2008052730 A1 WO 2008052730A1
Authority
WO
WIPO (PCT)
Prior art keywords
display system
vehicle display
calibration
user
vehicle
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.)
Ceased
Application number
PCT/EP2007/009367
Other languages
German (de)
English (en)
Inventor
Frank Schliep
Oliver Kirsch
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.)
Johnson Controls GmbH
Original Assignee
Johnson Controls GmbH
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 Johnson Controls GmbH filed Critical Johnson Controls GmbH
Publication of WO2008052730A1 publication Critical patent/WO2008052730A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/011—Head-up displays characterised by optical features comprising device for correcting geometrical aberrations, distortion
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
    • G02B27/01—Head-up displays
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/014—Head-up displays characterised by optical features comprising information/image processing systems

Definitions

  • Vehicle display system or projection display for a motor vehicle Vehicle display system or projection display for a motor vehicle
  • the invention relates to a vehicle display system or a projection display for a motor vehicle, which is designed as a so-called head-up display. Its task is the overlapping representation of information in the perceived by the windscreen outside scenery by reflecting into the field of vision of the driver using a partially transparent optical element. This element can be designed separately or its function is integrated into the windscreen. In addition to the utilization of the ever-present "natural" partial reflection on a glass surface, the partial finishing of the pane with a reflective coating coordinated with a polarization plane can be considered.
  • the present invention describes a vehicle display system and a method and a method by means of which the distortions can be self-calibrating reduced or completely eliminated and wherein
  • a camera device can be arranged at a different location than in the area of a user or a viewer.
  • the object is achieved in particular by a vehicle display system with a display device and with an optical system for generating a user-virtual image, wherein the vehicle display system comprises a detection means for detecting a distortion characteristic of the optical system, wherein the calibration light received by the detection means with respect to the propagation path of the display device is provided in the direction of the user propagating light at least partially extending in the opposite direction.
  • the detection means need not be arranged in the immediate vicinity of the viewer of the display system or in particular in the immediate vicinity of the viewer's head.
  • distortions that correspond to the distortion characteristic of the optical system of the vehicle display system are detected by the detection means, so that subsequently self-calibrating a reduction of these distortions or their elimination is possible.
  • a test signal pattern having a predetermined setpoint geometry is displayed on a target surface, in particular exclusively during the calibration process, introduced into the beam path extending between the windshield and the driver.
  • the detection means in particular a camera, records this presentation and forwards it to a control unit in which correction parameters are determined on the basis of the deviations of the recorded actual geometry from the desired geometry of the test signal pattern, which are applied to the image-forming element or to other optical elements of the projection system or of the optical system can act.
  • the detection means is provided in the region of the display device or if the calibration light is provided running substantially opposite to the entire propagation curve of the light propagating from the display device towards the user.
  • the detection means or the camera advantageously takes the image of the test signal pattern close to the image-generating element, ie on the display device, so that this test signal pattern before recording as many, ideally all, optical Elements of the projection system has happened and thus all possible image distortion causes are included.
  • a deflection device and / or a beam-splitting device is provided for deflecting or splitting the calibration light, wherein the deflection device or the beam splitting device is provided in particular as a movable mirror / folding mirror and / or as a dichroic beam splitter.
  • the deflection device or the beam splitting device is provided in particular as a movable mirror / folding mirror and / or as a dichroic beam splitter.
  • the spectral assignment of the test signal pattern ie the calibration light, then takes place to a region predominantly outside the visible light.
  • This makes it possible to carry out a coupling of the camera into the beam path or coupling of the calibration light out of the beam path of the projection system that is necessary for the measuring process and that is effective only for precisely this spectral range.
  • a non-mechanical element can advantageously be used for coupling, for example a dichroic beam splitter.
  • this does not constitute a performance-reducing impairment and avoids possible disadvantages of a fault-tolerant, mechanically operating element, such as a folding mirror.
  • a conventional beam splitter can also be used.
  • a folding mirror can be used in the event that only the beam path of the vehicle display system in the sense of calibration light is tested, ie opposite to normal operation;
  • a light source for example from the view of a viewer, necessary.
  • the vehicle display system has a calibration object, wherein the calibration object is preferably movably provided in an area between the windshield of the motor vehicle and the user, in particular provided hinged, and in particular a target surface of the calibration object is permanently visible or reflective is trained.
  • the calibration object is also referred to as the target surface in the context of the present invention.
  • the target surface can be provided as an external measuring device to be used as needed, which is introduced, for example, into the vehicle during a workshop visit.
  • the target surface can be structurally integrated in the motor vehicle and there preferably in the dashboard, in order to be reversibly brought in the translational or rotary movement from the non-use position to the measuring position, whereby a fully automatic calibration regardless of external conditions, such as workshop stay, is possible.
  • the test signal pattern presented on the target surface is an invariable component of the target surface, which can be permanently visible (printing, engraving) or becomes visible in a special spectral range (IR, UV), if necessary with separate illumination.
  • the lighting conditional light can be guided along the projection system and the light source can be arranged close to the camera.
  • the target surface is preferably designed as a retro-reflector.
  • the target surface is designed as a mirror surface which reflects the test signal pattern generated by the image-generating element in this case.
  • the result is an increased accuracy for the calibration process, since in this embodiment, a double pass of the test signal pattern takes place through the projection system, whereby the errors emerge stronger.
  • the drive unit of the placement mechanism of the target surface which can preferably be set up by rotational movement, can be kept controllable in order to adjust the mirror surface to an optimum position for the desired reflection.
  • the vehicle display system as a whole or at least a part of the vehicle display system is provided adaptable to different viewing positions of a user. This makes it possible that the function of the vehicle display system can be optimally adapted to the different needs of different users. In particular, the visibility of the information displayed on the vehicle display system is equally good for different sized users of the system.
  • the detection means is provided for detecting the viewing position of the user.
  • the detection means is provided for detecting the viewing position of the user.
  • the determination of the head position or eye position of the user according to the invention can be done either passive or active.
  • a passive determination of the head position is for example possible by the image supplied by the detection device or the camera image is searched for the relative position or position of a pattern, the geometry and contrast as a part of the user's face, in particular as an eye , is identified.
  • the head position it is also possible according to the invention for the head position to be determined actively, for example by illuminating the viewer or the driver by an IR light source, which is easily detectable on the image recorded by the camera , caused by the eye light reflexes causes.
  • an alternative use of the camera as a means of observation of the driver can furthermore be provided.
  • the occurrence of signs of fatigue for example, in the case of a target surface not inserted into the beam path slowed eye blink or characteristic eye movements, detectable by the camera.
  • visual warnings can then be generated by the imaging element and thus given to the driver for information.
  • Another object of the present invention is a method for calibrating a vehicle display system according to the invention, wherein at least temporarily the calibration object is brought into an area between the windshield of the motor vehicle and the user.
  • a further subject of the present invention is a method for operating a vehicle display system according to the invention, wherein the eye position of the user is detected by means of the detection means.
  • FIG. 1 shows schematically a representation of a vehicle display system according to the invention.
  • FIG. 1 schematically shows an embodiment of a projection system 10 according to the invention or a vehicle display system 10 in the form of a sectional view during the measurement phase required for the calibration.
  • the vehicle display system 10 comprises a display device 30, an optical system 40, a control unit 52 and a detection device 50, wherein the detection device 50 is designed in particular as a camera.
  • a light source (not shown) for illuminating the display device 30 is provided according to the invention.
  • a light-emitting diode high-power light-emitting diode
  • a plurality of light-emitting diodes diode array or diode array
  • the light source 20 may either be part of the vehicle display system 10 or may be separate therefrom.
  • First, information of the display device 30 carrying and containing light is radiated according to a first direction 41.
  • the light emitted according to the first direction 41 or propagating in the first direction 41 is deflected by the optical system 40 in accordance with the invention in particular several times.
  • a first deflecting mirror 45 is provided, which deflects the light arriving in the first direction 41 in a second direction 42.
  • the light propagating in the second direction 42 is in turn reflected by a second deflecting mirror 47 and deflected in a third direction 43.
  • the light propagating in the third direction 43 is again reflected by a windshield 48 and deflected in a fourth direction 44.
  • the fourth direction 44 is directed toward the eye of the observer 60.
  • a target surface 61 or a calibration object 61 protrudes into the beam path in an upright position, so that a test signal pattern-which is either on the calibration object 61 (for example, firmly printed or embossed) or projected onto the calibration object 61-after forwarding (FIG. opposite to the respective propagation directions 41, 42, 43, 44 of the light of the display device 30) intended for a user of the vehicle display system via a plurality of mirror surfaces or mirrors from the camera 50 as calibration light can be included.
  • the calibration object 61 according to the invention in particular according to the arrow 65 can be folded down or otherwise removed from the beam path.
  • a deflection device 51 or a beam splitting device 51 which performs a deflection or beam splitting.
  • a dichroic beam splitter or dichroic mirror is provided as deflecting device 51 or as beam splitting device 51.
  • a wavelength different from visible light is used for the calibration light, so that, on the one hand, it is possible to calibrate during normal display operation and, on the other hand, lower losses occur at the deflection device 51.
  • a control unit 52 takes in the embodiment shown in this figure exclusively influence on the image-forming element 30.
  • the control unit 52 may also be provided according to the invention (not shown ) that the control unit 52 performs the error correction or the calibration by influencing a controllable variable characteristic of an element of the optical system 40.
  • controllably variable influencing the surface contour of such an element of the optical system 40 such as a mirror surface and / or a lens surface, as is known in principle from the telescope production in astronomy;
  • this alternative does not have to relate exclusively to a surface influence of the element in the optical system, but may also relate, for example, to its transmission characteristic.
  • the influence of the control unit 52 may also be provided both on the image-forming element 30 and the display device 30, as well as on a controllably variable characteristic of an element of the optical system 40.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)

Abstract

L'invention concerne un système d'affichage pour véhicule, un procédé pour étalonner un tel système d'affichage pour véhicule, ainsi qu'un procédé pour faire fonctionner un tel système d'affichage pour véhicule. Le système d'affichage pour véhicule selon l'invention comprend un dispositif d'affichage, un système optique servant à générer une image virtuelle pour un utilisateur, ainsi qu'un moyen de détection servant à détecter une caractéristique de distorsion du système optique. Le système d'affichage pour véhicule selon l'invention est caractérisé en ce que la lumière d'étalonnage captée par le moyen de détection va au moins en partie dans une direction opposée à celle du tracé de propagation de la lumière se propageant du dispositif d'affichage vers l'utilisateur.
PCT/EP2007/009367 2006-10-30 2007-10-29 Système d'affichage pour véhicule ou affichage par projection pour un véhicule automobile et procédé d'étalonnage Ceased WO2008052730A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006051681.8 2006-10-30
DE102006051681 2006-10-30

Publications (1)

Publication Number Publication Date
WO2008052730A1 true WO2008052730A1 (fr) 2008-05-08

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PCT/EP2007/009367 Ceased WO2008052730A1 (fr) 2006-10-30 2007-10-29 Système d'affichage pour véhicule ou affichage par projection pour un véhicule automobile et procédé d'étalonnage

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010051979A1 (fr) * 2008-11-05 2010-05-14 Johnson Controls Gmbh Système d'affichage de véhicule ou affichage par projection pour véhicule automobile et procédé d'étalonnage
US8564502B2 (en) 2009-04-02 2013-10-22 GM Global Technology Operations LLC Distortion and perspective correction of vector projection display
CN108061968A (zh) * 2018-01-05 2018-05-22 京东方科技集团股份有限公司 一种抬头显示装置及显示图像校正方法
CN108803033A (zh) * 2018-05-30 2018-11-13 京东方科技集团股份有限公司 畸变校正眼镜、抬头显示设备、系统、校正方法
DE102017208343A1 (de) * 2017-05-17 2018-11-22 Volkswagen Aktiengesellschaft Anzeigesystem für ein Fahrzeug
DE102017100676B4 (de) * 2017-01-16 2020-02-06 Valeo Schalter Und Sensoren Gmbh Kalibrierung einer Kopf-oben-Anzeige eines Kraftfahrzeugs

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10046019A1 (de) * 2000-09-18 2002-03-28 Esg Elektroniksystem Und Logis Verfahren und Vorrichtung zur verzerrungsfreien Darstellung von Bildelementen
DE10334720A1 (de) * 2003-07-30 2005-03-03 Bayerische Motoren Werke Ag Projektionsvorrichtung, insbesondere für ein Kraftfahrzeug
DE102004031311A1 (de) * 2004-06-29 2006-01-19 Robert Bosch Gmbh Vorrichtung zur Darstellung von Informationen auf einer Projektionsfläche
DE102004050064A1 (de) * 2004-10-13 2006-04-27 Siemens Ag Head-Up-Display

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10046019A1 (de) * 2000-09-18 2002-03-28 Esg Elektroniksystem Und Logis Verfahren und Vorrichtung zur verzerrungsfreien Darstellung von Bildelementen
DE10334720A1 (de) * 2003-07-30 2005-03-03 Bayerische Motoren Werke Ag Projektionsvorrichtung, insbesondere für ein Kraftfahrzeug
DE102004031311A1 (de) * 2004-06-29 2006-01-19 Robert Bosch Gmbh Vorrichtung zur Darstellung von Informationen auf einer Projektionsfläche
DE102004050064A1 (de) * 2004-10-13 2006-04-27 Siemens Ag Head-Up-Display

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016172554A (ja) * 2008-11-05 2016-09-29 ジョンソン・コントロールズ・ゲー・エム・ベー・ハー 車両表示装置又は自動車の投射ディスプレイ及び較正方法
CN102203659A (zh) * 2008-11-05 2011-09-28 约翰逊控股公司 用于机动车的车辆显示系统或投影显示器及其校准方法
CN102203659B (zh) * 2008-11-05 2013-12-11 约翰逊控股公司 用于机动车的车辆显示系统或投影显示器及其校准方法
US8711485B2 (en) 2008-11-05 2014-04-29 Johnson Controls Technology Company Vehicle display system or projection display for a motor vehicle, and calibration method
JP2014194565A (ja) * 2008-11-05 2014-10-09 Johnson Controls Gmbh 車両表示装置又は自動車の投射ディスプレイ及び較正方法
WO2010051979A1 (fr) * 2008-11-05 2010-05-14 Johnson Controls Gmbh Système d'affichage de véhicule ou affichage par projection pour véhicule automobile et procédé d'étalonnage
US8564502B2 (en) 2009-04-02 2013-10-22 GM Global Technology Operations LLC Distortion and perspective correction of vector projection display
DE102010013231B4 (de) 2009-04-02 2020-07-02 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Verzerrungs- und Perspektivenkorrektur einer Vektorprojektionsanzeige
DE102017100676B4 (de) * 2017-01-16 2020-02-06 Valeo Schalter Und Sensoren Gmbh Kalibrierung einer Kopf-oben-Anzeige eines Kraftfahrzeugs
DE102017208343A1 (de) * 2017-05-17 2018-11-22 Volkswagen Aktiengesellschaft Anzeigesystem für ein Fahrzeug
DE102017208343B4 (de) 2017-05-17 2022-12-29 Volkswagen Aktiengesellschaft Anzeigesystem für ein Fahrzeug und Fahrzeug
US11294174B2 (en) 2018-01-05 2022-04-05 Boe Technology Group Co., Ltd. Virtual image display apparatus, and method for reducing in real time imaging distortion in virtual image displayed by virtual image display apparatus
CN108061968A (zh) * 2018-01-05 2018-05-22 京东方科技集团股份有限公司 一种抬头显示装置及显示图像校正方法
CN108061968B (zh) * 2018-01-05 2021-10-15 京东方科技集团股份有限公司 一种抬头显示装置及显示图像校正方法
CN108803033A (zh) * 2018-05-30 2018-11-13 京东方科技集团股份有限公司 畸变校正眼镜、抬头显示设备、系统、校正方法
CN108803033B (zh) * 2018-05-30 2021-08-03 京东方科技集团股份有限公司 畸变校正眼镜、抬头显示设备、系统、校正方法
US11567321B2 (en) 2018-05-30 2023-01-31 Boe Technology Group Co., Ltd. Distortion calibration glasses, distortion correction head-up display device and system, image display distortion correction method and in-vehicle system

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