EP1834204A1 - Head-up display comprising a deformable mirror - Google Patents

Head-up display comprising a deformable mirror

Info

Publication number
EP1834204A1
EP1834204A1 EP05816221A EP05816221A EP1834204A1 EP 1834204 A1 EP1834204 A1 EP 1834204A1 EP 05816221 A EP05816221 A EP 05816221A EP 05816221 A EP05816221 A EP 05816221A EP 1834204 A1 EP1834204 A1 EP 1834204A1
Authority
EP
European Patent Office
Prior art keywords
mirror
head
display
adjusting
spie
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Withdrawn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
EP05816221A
Other languages
German (de)
French (fr)
Inventor
Britta Lind
Bernd Ludewig
Ralf Mayer
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.)
Continental Automotive GmbH
Original Assignee
Siemens VDO Automotive AG
VDO Automotive AG
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 Siemens VDO Automotive AG, VDO Automotive AG filed Critical Siemens VDO Automotive AG
Publication of EP1834204A1 publication Critical patent/EP1834204A1/en
Withdrawn legal-status Critical Current

Links

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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B17/00—Systems with reflecting surfaces, with or without refracting elements
    • G02B17/02—Catoptric systems, e.g. image erecting and reversing system
    • G02B17/06—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror
    • G02B17/0605—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors
    • G02B17/0621—Catoptric systems, e.g. image erecting and reversing system using mirrors only, i.e. having only one curved mirror using two curved mirrors off-axis or unobscured systems in which not all of the mirrors share a common axis of rotational symmetry, e.g. at least one of the mirrors is warped, tilted or decentered with respect to the other elements
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/08—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light
    • G02B26/0816—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements
    • G02B26/0825—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the direction of light by means of one or more reflecting elements the reflecting element being a flexible sheet or membrane, e.g. for varying the focus
    • 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
    • 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
    • G02B27/0149—Head-up displays characterised by mechanical features
    • G02B2027/0154—Head-up displays characterised by mechanical features with movable elements

Definitions

  • the invention relates to a head-up display having an image ⁇ generating unit and at least one mirror, the beam path in ⁇ Strah is arranged after the image forming unit.
  • the preferred area of application for the object of the inventions is fertil, are reflected by means of which information superimposed with the image of the environment in the windshield for the driver perceived the automotive industry, where already separated Vorrichtun ⁇ be applied gen.
  • For a high imaging quality of the displayed to the driver in the area virtual image of the head-up displays high Anforderun ⁇ gen are to be placed on the optics of the device.
  • the invention proposes that the mirror is formed deformable.
  • plastic reflect ⁇ since they are inexpensive to produce in injection molding technology.
  • a deformation of at least one mirror in particular allows the correction of typical distortions on windshields by the mirror at only certain points, for example, portions of a bearing surface, be ⁇ strengthened and is acted upon at others by means of a movable bearing with a bending force.
  • the mirror is also designed to be movable - ie displaceable and / or rotatable, preferably while maintaining the shape or. Surface contour.
  • a positional correction of the displayed virtual image can additionally be carried out by adjusting the mirror.
  • does not have the whole head-up display can be adjusted by means of an adjustment of the contact points more, which opened beneficial ⁇ way a particularly massive and easy attachment of the head-up display in the motor vehicle without Verstellieri- ness.
  • it makes sense if the mounting of the mirror on a holder is designed such that the holder holds the mirror in a predetermined shape or. fixed.
  • the holder may also have support surfaces for the mirror, and it may be provided on the support surfaces washer for the mirror, which are arranged between the support surfaces and the mirror.
  • the mirror optionally only point or line-like with bearing surfaces has a firm connection, and in the remaining area, preferably ⁇ in the edge or corner area, for example by means of shims or actuators can be deformed so that the Shape and position of the windshield is compensated with the aim ei ⁇ ner distortion-free display of the virtual image of the shape of the mirror.
  • Particularly useful is an embodiment of a holder with at least one
  • the mirror is deformable.
  • the actuator may ⁇ element in this case, for example, comprise a piezoelectric actuator on ⁇ , be an electromagnetic actuator or equipped with a servo motor, preferably which drives ⁇ instance from a central controller controlled deformation of the mirror for an approximation to a virtual image target state cause ,
  • the adjusting element can have an adjusting screw, possibly driven by the drives mentioned above by way of example, which enables a precise adjustment of the mirror shape and the mirror position.
  • electromagnetic control elements are inexpensive and convenient.
  • a particularly compact design of the head-up display he ⁇ gives, if the holder is part of a housing in which the image forming unit is arranged.
  • bearing surfaces for the mirror and front can be directly attached to the housing.
  • the rigidity of a regular, and preferably kastenför ⁇ -shaped housing has a positive effect on the positional stability of the mirror.
  • the demands on the tolerances of the housing in the region of the mirror are hereby relatively low, since the mobility according to the invention resp. a deformability of the mirror in a position to compensate for inaccuracies of the hous ⁇ ses without additional effort.
  • the ⁇ se free-form surface can be based on the Fix ⁇ points of the mirror and the bearing points of the mirror tuned to actuators in such a way to be that s is typical distortions from deformations of the windscreen, when installing the ⁇ same with just a few, possibly only one Have adjusting element corrected.
  • a controller is provided which controls the adjusting elements on the basis of a predetermined correction parameter set so that undergoes s the mirror agreed be a ⁇ deformation.
  • the correction parameter set can be the result of an analysis of measured values which determine the actual individual geometry of the relative position of the support points of a head-up.
  • Such a measurement can be made directly or indirectly by the head-up display is incorporated in a first position, first and windshield, a reference image in the wind einaptt which the determination of relevant means of reference points geometry ratios of the Real ⁇ tivlage of the head-up display to the windshield made ⁇ light.
  • This can be done, for example, by means of a receiving Sensors in the perception area (eye-box) for the head-up display and an evaluating arithmetic unit take place, which determines from the measured values the correction parameter set for the control of actuators.
  • Figure 1 is a schematic representation of a special
  • Figure 2 is a schematic spatial representation of a ver ⁇ mouldable mirror with actuators.
  • Figure 1 shows a head-up display 1 in
  • the simplified illustrated head-up display 1 has as we ⁇ sentliche modules a controller 6, a light source 7, one of the light source 7 through-lit display 8 and two the beam path 2 deflecting mirror 9, 10.
  • the Lichtquel ⁇ le 7 generates the neces sary for fluoroscopy of the display 8 Liehe light by means of several light-emitting diodes 11, which radiate in a reflector 12, which generates a substantially parallel beam path 2 from the coupled light.
  • the light source 7 and the display 8 form in combination with each other.
  • the first mirror following the image generation unit 13 in the beam path 2 is designed to be movable and deformable and can be adjusted to a specific shape and position by means of an adjusting element 15 in accordance with specifications from the control 6.
  • the actuating element 15 is embodied as a piezoelectric actuator 16 and the one-dimensional method allows a final control elements of the serving 18 of the mirror 9 as la ⁇ -enhancing pad adjacent one edge thereof.
  • the mirror 9 is fixedly mounted on a holder 22 and adjustably mounted in a second region 21 on an actuator of the adjusting element 15, which adjusting element 15 is also attached to the holder 22.
  • the holder 22 is part of a housing 23 surrounding the head-up display 1.
  • the first mirror 9 in the beam path subsequent second mirror 10 is partially attached to a support surface 24 and adjusted in the non-fixed area by means of a Unterlegele ⁇ Mentes 25, which is releasably secured there, in terms of its shape and position.
  • the controller 6 controls the deformation of the first mirror 9 by driving the actuating element 15 in a predetermined way.
  • FIG. 2 shows a deformable rectangular mirror 9 according to the invention attached to a holder 22.
  • a deformable rectangular mirror 9 according to the invention attached to a holder 22.
  • the region of the geometric center 31 of the mirror surface of the mirror is punctiform static but spatially rotatable.
  • a storage point 32, 33, 34, 35 At each corner there is a storage point 32, 33, 34, 35, on which by means of a respective adjusting element 15, the position of the mounted region of the mirror 9 deforming the mirror 9 in a direction substantially perpendicular to the plane of the undeformed mirror 9 is changeable bar.
  • typical errors of Ab ⁇ education of the reflection in the windshield WS can be corrected.
  • two bearings 36, 37 In the region of the edge of the mirror 9 are two bearings 36, 37, each of which allow a one-dimensional transverse movement of the bearing point of the mirror 9 along a curve 38, 39 and otherwise limit the degrees of freedom of mobility there.

Abstract

The invention relates to a head-up-display (1) comprising an image generating unit (13,- 7, 8) and at least one mirror (9, 10) which is arranged in the beam path (2) downstream from the image generating unit (13; 7, 8). Traditional head-up-displays (1) require an expensive adjusting element by taking into account the individual geometry of the built-in windscreen (WS) for good image quality. According to the invention, the mirror (9, 10) is embodied in such a manner that it can be deformed by adjusting elements (15, 16) in order to facilitate the control thereof.

Description

Beschreibungdescription
HEAD-UP DISPLAY MIT VERFORMBAREM SPIEGELHEAD-UP DISPLAY WITH DEFORMABLE MIRROR
Die Erfindung betrifft ein Head-Up-Display mit einer Bilder¬ zeugungseinheit und mindestens einem Spiegel, der im Strah¬ lengang nach der Bilderzeugungseinheit angeordnet ist .The invention relates to a head-up display having an image ¬ generating unit and at least one mirror, the beam path in ¬ Strah is arranged after the image forming unit.
Das bevorzugte Anwendungsgebiet für den Gegenstand der Erfin- düng ist der Automobilbau, wo bereits vereinzelt Vorrichtun¬ gen angewendet werden, mittels derer Informationen überlagernd mit dem Bild der Umgebung in die Windschutzscheibe für den Fahrer wahrnehmbar eingespiegelt werden . Für eine hohe Abbildungsgute des dem Fahrer in der Umgebung angezeigten virtuellen Bildes des Head-Up-Displays sind hohe Anforderun¬ gen an die Optik der Vorrichtung zu stellen . Große Probleme ergeben sich daraus , dass die Windschutzscheibe ebenfalls Teil der abbildenden Optik in Form eines Spiegels ist . Bereits kleine Verformungen der Windschutzscheibe reichen aus , um das virtuelle Bild abweichend von einem Sollzustand schräg erscheinen zu lassen oder zu verzerren . Die Toleranzen beim Einbau einer Windschutzscheibe in eine Karosserie überschrei¬ ten die Präzisionsgrenzen, die für eine gute Abbildungsquali¬ tät des Head-up-Displays erforderlich wären . Es liegt in der Natur von Toleranzen, dass die Geometrie der Windschutzschei¬ be und die relative Lage zu Aufhängepunkten eines Head-Up- Displays in signifikanter Größenordnung mehr oder weniger dem Zufall unterliegen, was bisher eine sehr aufwendige manuelle Justage des Head-Up-Displays relativ zu der Windschutz scheibe für eine akzeptable Abbildungsqualität erforderlich macht .The preferred area of application for the object of the inventions is fertil, are reflected by means of which information superimposed with the image of the environment in the windshield for the driver perceived the automotive industry, where already separated Vorrichtun ¬ be applied gen. For a high imaging quality of the displayed to the driver in the area virtual image of the head-up displays high Anforderun ¬ gen are to be placed on the optics of the device. Great problems arise from the fact that the windshield is also part of the imaging optics in the form of a mirror. Even small deformations of the windshield are sufficient to make the virtual image deviate from a desired state appear oblique or distort. The tolerances for installation of a windshield in a body transfrontier ¬ th the precision limits of the head-up display, the ty for a good picture quality ¬ would be required. It is in the nature of tolerances that the geometry of Windschutzschei ¬ be and the relative position to suspension points of a head-up display in a significant order more or less subject to chance, which has been a very complicated manual adjustment of the head-up display relative to the windscreen disc for an acceptable imaging quality required.
Hierbei sind jedoch mehr oder weniger nur Schrägstellungskor- rekturen möglich, indem Aufhängepunkte des Head-Up-Displays verlagert werden . Die sich aus den Fertigungs- und Montageto- leranzen der Windschutzscheibe nahezu beliebig ergebenden Verzerrungen des Bildes sind auf diese Weise nicht korrigier¬ bar .Here, however, more or less only Schrägstellungskor- corrections are possible by suspension points of the head-up display are shifted. Resulting from the manufacturing and assembly leranzen of the windshield almost any resulting distortions of the image are not correctable ¬ bar in this way.
Eine Vorrichtung der beschriebenen Art ist bereits aus der deutschen Offenlegungs schrift DE 39 29 842 Al bekannt .A device of the type described is already known from the German patent application DE 39 29 842 Al.
Zur Lösung der Aufgabe wird erfindungsgemäß vorgeschlagen, dass der Spiegel verformbar ausgebildet ist .To achieve the object, the invention proposes that the mirror is formed deformable.
Besonders zweckmäßig ist hierbei der Einsatz von Kunststoff¬ spiegeln, da diese in Spritzgus stechnik preiswert herstellbar sind . Eine Verformung mindestens eines Spiegels ermöglicht insbesondere die Korrektur von typischen Verwerfungen an Windschutzscheiben, indem der Spiegel an nur bestimmten Punkten, beispielsweise Teilabschnitten einer Auflagefläche, be¬ festigt wird und an anderen mittels eines beweglichen Lagers mit einer Biegekraft beaufschlagt wird.Particularly useful in this case is the use of plastic reflect ¬ , since they are inexpensive to produce in injection molding technology. A deformation of at least one mirror in particular allows the correction of typical distortions on windshields by the mirror at only certain points, for example, portions of a bearing surface, be ¬ strengthened and is acted upon at others by means of a movable bearing with a bending force.
Die Vorteile der Erfindung kommen voll zur Geltung, wenn der Spiegel auch beweglich ausgebildet ist - also verschiebbar und/oder drehbar, vorzugsweise unter Beibehaltung der Form bzw . Oberflächenkontur . Auf diese Weise kann zusätzlich eine Lagekorrektur des angezeigten virtuellen Bildes mittels Ver- stellens des Spiegels vorgenommen werden . Auf diese Weise muss nicht mehr das gesamte Head-Up-Display mittels einer Verstellung der Auflagepunkte justiert werden, was vorteil¬ haft eine besonders massive und einfache Befestigung des Head-Up-Displays in dem Kraftfahrzeug ohne Verstellmöglich- keit eröffnet . Hierbei ist es sinnvoll, wenn die Lagerung des Spiegels an einem Halter derart ausgebildet ist , dass der Halter den Spiegel in einer vorgegebenen Form hält bzw . fixiert . Zweckmäßig kann der Halter auch Auflageflächen für den Spiegel aufweisen, und es können an den Auflageflächen Unterlegelemente für den Spiegel vorgesehen sein, die zwischen den Auflageflächen und dem Spiegel angeordnet sind. Es ist daneben oder zusätzlich hierbei sinnvoll, wenn der Spiegel gegebenenfalls nur punkt- oder linienartig mit Auflageflächen eine feste Verbindung aufweist, und im übrigen Bereich, vorzugs¬ weise im Kanten- oder Eckbereich zum Beispiel mittels Unterlegelementen oder Stellelementen so verformt werden kann, dass die Form und Lage der Windschutzscheibe mit dem Ziel ei¬ ner verzerrungsfreien Anzeige des virtuellen Bildes von der Form des Spiegels kompensiert wird. Besonders zweckmäßig ist eine Ausbildung eines Halters mit mindestens einem Stellele¬ ment , mittels dessen der Spiegel verformbar ist . Das Stell¬ element kann hierbei beispielsweise einen Piezo-Aktuator auf¬ weisen, ein elektromagnetisches Stellelement sein oder mit einem Servomotor ausgerüstet sein, welche Antriebe vorzugs¬ weise von einer zentralen Steuerung angesteuert eine Verformung des Spiegels für eine Angleichung an einen Sollzustand des virtuellen Bildes bewirken . Daneben oder zusätzlich kann das Stellelement eine Stellschraube, gegebenenfalls angetrie- ben von den beispielhaft zuvor aufgeführten Antrieben, aufweisen, welche eine präzise Justage der Spiegelform und der Spiegellage ermöglicht . Auch elektromagnetische Stellelemente sind preiswert und zweckmäßig .The advantages of the invention come into full effect when the mirror is also designed to be movable - ie displaceable and / or rotatable, preferably while maintaining the shape or. Surface contour. In this way, a positional correction of the displayed virtual image can additionally be carried out by adjusting the mirror. In this way does not have the whole head-up display can be adjusted by means of an adjustment of the contact points more, which opened beneficial ¬ way a particularly massive and easy attachment of the head-up display in the motor vehicle without Verstellmöglich- ness. In this case, it makes sense if the mounting of the mirror on a holder is designed such that the holder holds the mirror in a predetermined shape or. fixed. Suitably, the holder may also have support surfaces for the mirror, and it may be provided on the support surfaces washer for the mirror, which are arranged between the support surfaces and the mirror. It is next to or additionally useful if the mirror optionally only point or line-like with bearing surfaces has a firm connection, and in the remaining area, preferably ¬ in the edge or corner area, for example by means of shims or actuators can be deformed so that the Shape and position of the windshield is compensated with the aim ei ¬ ner distortion-free display of the virtual image of the shape of the mirror. Particularly useful is an embodiment of a holder with at least one Stellele ¬ ment, by means of which the mirror is deformable. The actuator may ¬ element in this case, for example, comprise a piezoelectric actuator on ¬, be an electromagnetic actuator or equipped with a servo motor, preferably which drives ¬ instance from a central controller controlled deformation of the mirror for an approximation to a virtual image target state cause , In addition to or in addition, the adjusting element can have an adjusting screw, possibly driven by the drives mentioned above by way of example, which enables a precise adjustment of the mirror shape and the mirror position. Also, electromagnetic control elements are inexpensive and convenient.
Eine besonders kompakte Ausbildung des Head-Up-Displays er¬ gibt sich, wenn der Halter Bestandteil eines Gehäuses ist, in dem die Bilderzeugungseinheit angeordnet ist . Hierbei können an dem Gehäuse direkt Auflageflächen für den Spiegel und Vor- kehrungen für ein Stellelement ausgebildet sein, was die Bau¬ teilevielfalt günstig reduziert . Darüber hinaus wirkt sich die Steifigkeit eines regelmäßig und vorzugsweise kastenför¬ migen Gehäuses positiv auf die Lagestabilität des Spiegels aus . Die Anforderungen an die Toleranzen des Gehäuses im Bereich des Spiegels sind hierbei verhältnismäßig gering, da die erfindungsgemäße Beweglichkeit bzw . eine Verformbarkeit des Spiegels in die Lage versetzt, Ungenauigkeiten des Gehäu¬ ses ohne Mehraufwand auszugleichen . Eine Kompensation nahezu aller denkbaren Verformungen einer Windschutz scheibe ist möglich, wenn der Spiegel eine Freiformoberfläche aufweist . Die¬ se Freiformoberfläche kann hierbei in der Weise auf die Fix¬ punkte des Spiegels und die Lagerpunkte des Spiegels an Stellelementen abgestimmt sein, das s sich typische Verzerrun- gen aus Verformungen der Windschutz scheibe beim Einbau der¬ selben mittels nur weniger, gegebenenfalls nur eines Stell¬ elementes korrigieren lassen . Besonders sinnvoll ist eine er¬ findungsgemäße Vorrichtung, wenn eine Steuerung vorgesehen ist, die anhand eines vorgegebenen Korrekturparametersatzes die Stellelemente ansteuert, so das s der Spiegel eine be¬ stimmte Verformung erfährt .A particularly compact design of the head-up display he ¬ gives, if the holder is part of a housing in which the image forming unit is arranged. In this case, bearing surfaces for the mirror and front can be directly attached to the housing. be designed for a control element, which reduces the construction ¬ variety of parts low. In addition, the rigidity of a regular, and preferably kastenför ¬-shaped housing has a positive effect on the positional stability of the mirror. The demands on the tolerances of the housing in the region of the mirror are hereby relatively low, since the mobility according to the invention resp. a deformability of the mirror in a position to compensate for inaccuracies of the hous ¬ ses without additional effort. A compensation of almost all conceivable deformations of a windscreen is possible if the mirror has a freeform surface. The ¬ se free-form surface can be based on the Fix ¬ points of the mirror and the bearing points of the mirror tuned to actuators in such a way to be that s is typical distortions from deformations of the windscreen, when installing the ¬ same with just a few, possibly only one Have adjusting element corrected. Particularly useful is a ¬ he invention proper device when a controller is provided which controls the adjusting elements on the basis of a predetermined correction parameter set so that undergoes s the mirror agreed be a ¬ deformation.
Der Korrekturparametersatz kann hierbei Ergebnis einer Analyse von Messwerten sein, die die tatsächliche individuelle Ge- ometrie der Relativlage der Auflagerpunkte eines Head-Up-The correction parameter set can be the result of an analysis of measured values which determine the actual individual geometry of the relative position of the support points of a head-up.
Displays zu der Windschutz scheibe eines Kraftfahrzeuges be¬ schreibt . Eine derartige Messung kann unmittelbar erfolgen oder indirekt , indem zunächst das Head-Up-Display in einer ersten Lage eingebaut wird und ein Referenzbild in die Wind- schutzscheibe einspiegelt, welches mittels Referenzpunkten die Feststellung relevanter Geometrieverhältnisse der Rela¬ tivlage des Head-Up-Displays zu der Windschutzscheibe ermög¬ licht . Dies kann beispielsweise mittels einer aufnehmenden Sensorik im Wahrnehmungsbereich (Eye-Box) für das Head-Up- Display und einer auswertenden Recheneinheit erfolgen, die aus den Messwerten den Korrekturparametersatz zur Ansteuerung von Stellelementen ermittelt .Displays to the windshield disc of a motor vehicle be ¬ writes. Such a measurement can be made directly or indirectly by the head-up display is incorporated in a first position, first and windshield, a reference image in the wind einspiegelt which the determination of relevant means of reference points geometry ratios of the Real ¬ tivlage of the head-up display to the windshield made ¬ light. This can be done, for example, by means of a receiving Sensors in the perception area (eye-box) for the head-up display and an evaluating arithmetic unit take place, which determines from the measured values the correction parameter set for the control of actuators.
Im Folgenden ist die Erfindung anhand eines speziellen Ausführungsbeispiels unter Bezugnahme auf schematische Darstel¬ lungen zur Verdeutlichung erläutert . Es zeigen :In the following, the invention is based on a specific embodiment with reference to schematic depicting ¬ lungs explained for clarity. Show it :
Figur 1 eine schematische Darstellung eines speziellenFigure 1 is a schematic representation of a special
Aus führungsbeispiels der Erfindung .From exemplary embodiment of the invention.
Figur 2 eine schematische räumliche Darstellung eines ver¬ formbaren Spiegels mit Stellelementen .Figure 2 is a schematic spatial representation of a ver ¬ mouldable mirror with actuators.
Die Darstellung der Figur 1 zeigt ein Head-Up-Display 1 imThe representation of Figure 1 shows a head-up display 1 in
Zusammenwirken mit einer Windschutz scheibe WS , an welcher ein Strahlengang 2 in der Weise eingespiegelt wird, dass sich ei¬ nem Betrachter 3 ein virtuelles Bild 4 darstellt . Die Wind¬ schutzscheibe WS weist Verformungen 5 auf, die dem Montage- und Herstellungsprozes s entstammen . Diese Verformungen 5 ha¬ ben zur Folge, das s dem Betrachter 3 ein virtuelles Bild 4 angezeigt wird, welches unter Verwendung eines herkömmlichen Head-Up-Displays verzerrt und schräg ist .Cooperation with a windshield WS, to which a beam path 2 is reflected in such a way that ei ¬ nem observer 3 is a virtual image 4. The wind protection ¬ disc WS has deformations 5, which come s the Assembly and Herstellungsprozes. These deformations 5 ha ¬ ben result, the s a virtual image 4 is displayed to the viewer 3, which distorted using a conventional head-up displays and obliquely.
Das vereinfacht dargestellte Head-Up-Display 1 weist als we¬ sentliche Module eine Steuerung 6, eine Lichtquelle 7 , ein von der Lichtquelle 7 durchleuchtetes Display 8 und zwei den Strahlengang 2 umlenkende Spiegel 9 , 10 auf . Die Lichtquel¬ le 7 erzeugt das zur Durchleuchtung des Displays 8 erforder- liehe Licht mittels mehrerer Leuchtdioden 11 , die in einem Reflektor 12 einstrahlen, der aus dem eingekoppelten Licht einen im Wesentlichen parallelen Strahlengang 2 erzeugt . Die Lichtquelle 7 und das Display 8 bilden in Kombination mitein- ander eine Bilderzeugungseinheit 13 , die mittels der Steue¬ rung 6 angesteuert wird.The simplified illustrated head-up display 1 has as we ¬ sentliche modules a controller 6, a light source 7, one of the light source 7 through-lit display 8 and two the beam path 2 deflecting mirror 9, 10. The Lichtquel ¬ le 7 generates the neces sary for fluoroscopy of the display 8 Liehe light by means of several light-emitting diodes 11, which radiate in a reflector 12, which generates a substantially parallel beam path 2 from the coupled light. The light source 7 and the display 8 form in combination with each other. Other an image generating unit 13, which is controlled by means of 6 Steue ¬ tion.
Der im Strahlengang 2 nach der Bilderzeugungseinheit 13 fol- gende erste Spiegel ist beweglich und verformbar ausgebildet und mittels eines Stellelementes 15 nach Vorgaben aus der Steuerung 6 in eine bestimmte Form und Lage justierbar . Das Stellelement 15 ist hierbei als Piezo-Aktuator 16 ausgebildet und ermöglicht das eindimensionale Verfahren eines Stellglie- des , welches im Bereich einer Kante 18 des Spiegels 9 als la¬ gernde Auflage dient . In einem ersten Bereich 20 ist der Spiegel 9 fest an einem Halter 22 angebracht und in einem zweiten Bereich 21 an einem Stellglied des Stellelementes 15 verstellbar gelagert, welches Stellelement 15 ebenfalls an dem Halter 22 befestigt ist . In dem speziellen Aus führungs¬ beispiel ist der Halter 22 Bestandteil eines das Head-Up- Display 1 umgebenden Gehäuses 23.The first mirror following the image generation unit 13 in the beam path 2 is designed to be movable and deformable and can be adjusted to a specific shape and position by means of an adjusting element 15 in accordance with specifications from the control 6. The actuating element 15 is embodied as a piezoelectric actuator 16 and the one-dimensional method allows a final control elements of the serving 18 of the mirror 9 as la ¬-enhancing pad adjacent one edge thereof. In a first region 20, the mirror 9 is fixedly mounted on a holder 22 and adjustably mounted in a second region 21 on an actuator of the adjusting element 15, which adjusting element 15 is also attached to the holder 22. In the specific embodiment , the holder 22 is part of a housing 23 surrounding the head-up display 1.
Der dem ersten Spiegel 9 im Strahlengang nachfolgende zweite Spiegel 10 ist teilweise an einer Auflagefläche 24 befestigt und in dem nicht fixierten Bereich mittels eines Unterlegele¬ mentes 25 , welches dort lösbar befestigt ist, hinsichtlich seiner Form und Lage justiert .The first mirror 9 in the beam path subsequent second mirror 10 is partially attached to a support surface 24 and adjusted in the non-fixed area by means of a Unterlegele ¬ Mentes 25, which is releasably secured there, in terms of its shape and position.
Gemäß Vorgabe eines Korrekturparametersatzes K steuert die Steuerung 6 die Verformung des ersten Spiegels 9, indem sie das Stellelement 15 einen Verfahrweg vorgebend ansteuert .In accordance with the specification of a correction parameter set K, the controller 6 controls the deformation of the first mirror 9 by driving the actuating element 15 in a predetermined way.
Figur 2 zeigt einen verformbaren an einem Halter 22 ange- brachten rechteckigen Spiegel 9 nach der Erfindung . Im Bereich der geometrischen Mitte 31 der Spiegelfläche ist der Spiegel punktförmig statisch aber räumlich drehbar gelagert . An den Ecken befindet sich jeweils ein Lager- punkt 32 , 33, 34 , 35, an welchem mittels jeweils eines Stell¬ elements 15 die Lage des gelagerten Bereichs des Spiegels 9 den Spiegel 9 verformend in einer Richtung im Wesentlichen senkrecht zu der Ebene des unverformten Spiegels 9 veränder- bar ist . Auf diese Weise lassen sich typische Fehler der Ab¬ bildung der Einspiegelung in die Windschutzscheibe WS korrigieren . Im Bereich des Randes des Spiegels 9 befinden sich zwei Lagerungen 36 , 37 , die jeweils eine eindimensionale transversale Bewegung der gelagerten Stelle des Spiegels 9 entlang einer Kurve 38 , 39 ermöglichen und die dortigen Freiheitsgrade der Beweglichkeit im Übrigen einschränken . FIG. 2 shows a deformable rectangular mirror 9 according to the invention attached to a holder 22. In the region of the geometric center 31 of the mirror surface of the mirror is punctiform static but spatially rotatable. At each corner there is a storage point 32, 33, 34, 35, on which by means of a respective adjusting element 15, the position of the mounted region of the mirror 9 deforming the mirror 9 in a direction substantially perpendicular to the plane of the undeformed mirror 9 is changeable bar. In this way, typical errors of Ab ¬ education of the reflection in the windshield WS can be corrected. In the region of the edge of the mirror 9 are two bearings 36, 37, each of which allow a one-dimensional transverse movement of the bearing point of the mirror 9 along a curve 38, 39 and otherwise limit the degrees of freedom of mobility there.

Claims

Patentansprüche claims
1. Head-Up-Display ( 1 ) mit einer Bilderzeugungseinheit ( 13 ) und mindestens einem Spiegel ( 9 , 10 ) , der im Strahlen¬ gang (2 ) nach der Bilderzeugungseinheit ( 13 ) angeordnet ist, d a d u r c h g e k e n n z e i c h n e t , dass der Spiegel ( 9, 10 ) verformbar ausgebildet ist .1. Head-up display (1) with an image forming unit (13) and at least one mirror (9, 10) which is arranged in the beam ¬ gang (2) after the image forming unit (13), characterized in that the mirror (9 , 10) is deformable.
2. Head-Up-Display ( 1 ) nach Anspruch 1 , d a d u r c h g e k e n n z e i c h n e t , dass mindestens ein Stell¬ element ( 15 ) an dem Spiegel ( 9, 10 ) angebracht ist , mit¬ tels dessen der Spiegel ( 9 , 10 ) verformbar ist .2. Head-Up Display (1) according to claim 1, characterized in that at least one adjusting ¬ element (15) on the mirror (9, 10) is mounted, with ¬ means of which the mirror (9, 10) is deformable.
3. Head-Up-Display ( 1 ) nach Anspruch 2 , d a d u r c h g e k e n n z e i c h n e t , dass mehrere Stellelemen¬ te ( 15 ) an dem Spiegel ( 9, 10 ) an Lagerpunk¬ ten (32 , 33, 34 , 35 ) angebracht sind, so dass der Spie¬ gel ( 9, 10 ) im Bereich mindestens einer Kante ( 18 ) oder Ecke relativ zu den übrigen Bereichen des Spiegels ( 9, 10 ) bewegbar und auf diese Weise verformbar ist .3. Head-Up Display (1) according to claim 2, characterized in that a plurality of Stellelemen ¬ te (15) on the mirror (9, 10) at bearing points ¬ (32, 33, 34, 35) are mounted, so that SPIE ¬ gel (9, 10) in the region of at least one edge (18) or corner (10 9) is deformable relative to the remaining regions of the mirror and is movable in this way.
4. Head-Up-Display (1) nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , dass der Spiegel (9, 10) an einer Stelle räumlich fixiert i st .4. Head-Up Display (1) according to claim 3, characterized in that the mirror (9, 10) is spatially fixed at one point.
5. Head-Up-Display ( 1 ) nach Anspruch 3 oder 4 , d a ¬ d u r c h g e k e n n z e i c h n e t , das s der Spie¬ gel ( 9 , 10 ) rechteckig ausgebildet ist .5. head-up display (1) according to claim 3 or 4, since ¬ characterized , the s of Spie ¬ gel (9, 10) is rectangular.
6. Head-Up-Display (1) nach Anspruch 3, 4 oder 5, d a ¬ d u r c h g e k e n n z e i c h n e t , dass der Spie¬ gel (9, 10) an fünf Lagerpunkten (32, 33, 34, 35) gela- gert ist, wobei mindestens vier Lagerpunk¬ te ( 32 , 33, 34 , 35 ) mit jeweils mindestens einem Stell¬ element ( 15 ) in Verbindung stehen und mittels des Stell¬ elementes ( 15 ) relativ zueinander bewegbar sind.6. Head-Up Display (1) according to claim 3, 4 or 5, since ¬ characterized in that the Spie ¬ gel (9, 10) at five bearing points (32, 33, 34, 35) loaded gela- Gert is, wherein at least four Lagerpunk ¬ te (32, 33, 34, 35) with at least one adjusting ¬ element (15) are in communication and by means of the adjusting ¬ element (15) are relatively movable.
7. Head-Up-Display ( 1 ) nach Anspruch 1 oder 2 , d a ¬ d u r c h g e k e n n z e i c h n e t , das s die Lagerung des Spiegels ( 9, 10 ) derart ausgebildet ist, dass der Spiegel ( 9, 10 ) in einer vorgegebenen Form gehalten wird .7. Head-Up Display (1) according to claim 1 or 2, characterized ¬ characterized , the s the storage of the mirror (9, 10) is designed such that the mirror (9, 10) is held in a predetermined shape.
8. Head-Up-Display (1) nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , dass das Stellelement (15) einen Piezo-Aktuator (16) aufweist.8. Head-Up Display (1) according to claim 5, characterized in that the actuating element (15) has a piezoelectric actuator (16).
9. Head-Up-Display ( 1 ) nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , dass das Stellelement ( 15 ) einen Servomotor aufweist .9. Head-Up Display (1) according to claim 5, characterized in that the actuating element (15) has a servo motor.
10. Head-Up-Display ( 1 ) nach Anspruch 5, d a d u r c h g e k e n n z e i c h n e t , dass das Stellelement ( 15 ) eine Stellschraube aufweist .10. Head-up display (1) according to claim 5, d a d u r c h e c e n e z e i c h e n e that the adjusting element (15) has an adjusting screw.
11. Head-Up-Display ( 1 ) nach Anspruch 3, d a d u r c h g e k e n n z e i c h n e t , dass ein Halter (22 ) für den Spiegel ( 9, 10 ) vorgesehen ist und der Halter (22 ) Auf¬ lageflächen ( 24 ) für den Spiegel ( 9 , 10 ) aufweist und an den Auflageflächen (24 ) Unterlegelemente (5 ) für den Spiegel ( 9, 10 ) vorgesehen sind, die zwischen den Aufla- geflächen (24 ) und dem Spiegel ( 9, 10 ) angeordnet sind .11. Head-Up Display (1) according to claim 3, characterized in that a holder (22) for the mirror (9, 10) is provided and the holder (22) on ¬ bearing surfaces (24) for the mirror (9, 10) and on the bearing surfaces (24) shims (5) for the mirror (9, 10) are provided, which are arranged between the Aufla- surfaces (24) and the mirror (9, 10).
12. Head-Up-Display (1) nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t , dass der HaI- ter (22 ) Bestandteil eines Gehäuses (23 ) ist, in dem die Bilderzeugungseinheit ( 13 ) angeordnet ist .12. Head-Up Display (1) according to claim 1 or 2, characterized in that the HaI- ter (22) is part of a housing (23) in which the image-forming unit (13) is arranged.
13. Head-Up-Display ( 1 ) nach Anspruch 1 oder 2 , d a - d u r c h g e k e n n z e i c h n e t , das s der Spie¬ gel ( 9, 10 ) eine Freiformoberfläche aufweist .13. Head-Up Display (1) according to claim 1 or 2, characterized - characterized in that s the Spie ¬ gel (9, 10) has a free-form surface.
14. Head-Up-Display (1) nach Anspruch 1 oder 2, d a ¬ d u r c h g e k e n n z e i c h n e t , dass eine Steue- rung ( 6 ) vorgesehen ist, die anhand eines vorgegebenen Korrekturparametersatzes (K) die Stellelemente ( 15 ) an¬ steuert, so dass der Spiegel ( 9 , 10 ) eine bestimmte Ver¬ formung erfährt . 14 head-up display (1) is provided according to claim 1 or 2, since ¬ by in that a Steue- tion (6) which controls, using a predetermined correction parameter set (K) the adjusting elements (15) on ¬ so that the mirror (9, 10) undergoes a certain Ver ¬ modeling.
EP05816221A 2005-01-05 2005-12-09 Head-up display comprising a deformable mirror Withdrawn EP1834204A1 (en)

Applications Claiming Priority (2)

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DE102005000871 2005-01-05
PCT/EP2005/056628 WO2006072529A1 (en) 2005-01-05 2005-12-09 Head-up display comprising a deformable mirror

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