EP2195695A2 - Dispositif d'affichage tête haute destiné en particulier à un véhicule automobile - Google Patents

Dispositif d'affichage tête haute destiné en particulier à un véhicule automobile

Info

Publication number
EP2195695A2
EP2195695A2 EP08805005A EP08805005A EP2195695A2 EP 2195695 A2 EP2195695 A2 EP 2195695A2 EP 08805005 A EP08805005 A EP 08805005A EP 08805005 A EP08805005 A EP 08805005A EP 2195695 A2 EP2195695 A2 EP 2195695A2
Authority
EP
European Patent Office
Prior art keywords
head
combiner
display according
display
manginspiegel
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Withdrawn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
EP08805005A
Other languages
German (de)
English (en)
Inventor
Hans-Georg Heckmann
Johannes Dumanski
Friedrich Neuner
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.)
Qioptiq Photonics GmbH and Co KG
Original Assignee
LINOS Photonics GmbH and Co KG
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 LINOS Photonics GmbH and Co KG filed Critical LINOS Photonics GmbH and Co KG
Publication of EP2195695A2 publication Critical patent/EP2195695A2/fr
Withdrawn legal-status Critical Current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
    • G02B27/0101—Head-up displays characterised by optical features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
    • B60K35/21—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor using visual output, e.g. blinking lights or matrix displays
    • B60K35/22—Display screens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
    • B60K35/50—Instruments characterised by their means of attachment to or integration in the vehicle
    • B60K35/53—Movable instruments, e.g. slidable
    • 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
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
    • B60K2360/60—Structural details of dashboards or instruments
    • B60K2360/66—Projection screens or combiners
    • 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
    • G02B2027/0118—Head-up displays characterised by optical features comprising devices for improving the contrast of the display / brillance control visibility
    • 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
    • G02B27/0179—Display position adjusting means not related to the information to be displayed
    • G02B2027/0181—Adaptation to the pilot/driver
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • G02B5/26—Reflecting filters

Definitions

  • the invention relates to a head-up display, in particular for a motor vehicle, according to the preamble of claim 1.
  • head-up displays the driver of a motor vehicle relevant information is displayed while driving. These are displayed in the area of the windshield in the driver's field of vision. In order to impede the driver's view as little as possible, the displayed image is displayed as a virtual image in front of the windshield, so that the driver can observe the surroundings and the displayed data as simultaneously as possible without having to accommodate the eye differently.
  • the image information should be displayed in multiple colors.
  • the system must therefore be chromatically corrected over the entire visible spectral range.
  • a head-up display that essentially meets these requirements is known from DE 101 57 605 C1.
  • the image displayed on a display is projected over a two-stage optical structure, that is via an intermediate image and a separate combiner, which is in front of the windshield in the field of view of the viewer.
  • the imaging beam path is folded by multiple reflections on various mirrors to allow a compact design of the head-up display.
  • further increased requirements with respect to the visual field and specific installation space conditions also require alternative solutions, as described below.
  • the invention has for its object to provide a fully color-capable head-up display with large field of view and high magnification while requiring little space.
  • the folding of the beam path is performed by means of a Mangin mirror and lenses arranged in the beam path before and after the Mangin mirror.
  • the lenses are each arranged as a next element in the beam path, seen from the manganese mirror.
  • the manganese level is preferably in the aperture diaphragm.
  • the lenses before and after the Manginapt and the refractive element of the manganese mirror itself are made of plastic.
  • plastics are by far not as precise as glass in terms of their optical material properties.
  • the potential of the structure according to the invention comes to full advantage.
  • the lenses in combination with the Manginador color error and temperature response can partially compensate each other , For example, the color transverse aberration is corrected by the arrangement of the lenses on both sides of the Mangin mirror.
  • the correction of the longitudinal chromatic aberration is achieved essentially by the combination of the Mangin Weg vomanniLites with lenses of positive refractive power.
  • the combination of similar lens materials, the arrangement of a lens before and after the Manginapt with each positive refractive power thus offers the effect of an intrinsic correction of the system.
  • Even secondary spectra (color aberrations) are reduced by this design principle with the simplest means.
  • the Manginapt is arranged to correct the longitudinal chromatic aberration of the other lens elements in a pupil position.
  • the correction is facilitated by the fact that in a further preferred embodiment, the dispersions of the lenses before and after the Mangins- and the refractive refractive element Manginadors itself by less than 20% diverge. It is usually the practice to achieve chromatic aberrations using materials of widely differing dispersion. However, this would be problematic for plastics, since optically high-quality materials with high dispersion are hardly available. For this reason, it is particularly advantageous to use materials of similar dispersion and to realize the color aberration correction by the structure itself. Furthermore, with this design principle, negative influences due to temperature or production-specific tolerances or changes in the optical material properties (refractive index, dispersion) are partially compensated.
  • the lenses in the beam direction before and after the mangle mirror and the refractive element of the Manginapts made of the same or similar material. This makes it possible in the simplest way to achieve good color-error correction and insensitivity to optical material tolerances.
  • the Mangin mirror itself is designed as a negative lens with a mirrored Konvexseite. If the lens in front of the Mangin mirror and the lens according to the Mangin mirror positive refractive power, this system can avoid color aberrations particularly advantageous in the vote by color errors that are generated by one component, are immediately offset by the other again in opposite directions.
  • the beam path in the projection unit is constructed so that the rays leading to the Mangin mirror and those leading away from the Mangin mirror are so close to each other that a single lens can be used as a lens before and after the Mangin mirror ,
  • a separate combiner which has a partially reflecting concave side with the aid of which the image with the background is superimposed.
  • a separate combiner offers the possibility of being provided with a greater curvature or refractive power compared to a windshield and of optimal design with regard to image quality. Only then is it possible to realize a large field angle with small optical elements. Due to the greater refractive power of the combiner, problems with the sun's focus can also be reduced at the same time, which would become apparent when using the windshield as a combiner due to the large inlet opening. In particular, it is also possible and advantageous for a separate combiner to apply special coatings which suppress double images and bring about the partial reflectivity.
  • a so-called triple-notch coating which is specially adapted to the color spectra, ie a coating which reflects the projection unit light projected onto the combiner only in three narrow wavelength ranges, is applied to the reflective concave side of the combiner , This makes it possible to realize a multi-color head-up display, which allows maximum amount of light from the environment to pass through the combiner and still provides a color display image.
  • the combiner is preferably designed as a freeform surface. This also supports the compact design of the optical projection unit with a large eye box. In a further advantageous embodiment, in addition to the combiner, which is preferably realized as a free-form surface, further free-form surfaces are provided below the optical units of the projection unit. This allows a further space savings in the projection unit and thus achieve a more compact design.
  • a plane mirror is still arranged between the projection unit and the combiner, which throws the projected image on the combiner.
  • both plane mirror and combiner are movably mounted so that a coupled movement of only these components height adjustment of the eye box to the driver or the seat adjustment is possible without affecting the quality of the image.
  • the movement is preferably carried out by means of a linkage.
  • the invention is not limited thereto.
  • the invention can be realized as well when the manganese level is replaced by a combination of a concave mirror with a negative lens placed in front of it.
  • the combiner of the head-up display is at the height of the windshield. It would also be possible to provide a combiner advantageously fully mirrored height of the dashboard. This has the advantage that the entire windscreen is available for visibility to the outside.
  • FIG. 1 Schematically an inventive head-up display in a first
  • FIG. 2 shows a detail of FIG. 1 and FIG. 3 shows schematically a head-up display according to the invention in a second embodiment
  • Embodiment. 1 shows a schematic representation of the structure of a head-up display according to the invention, which is installed in a motor vehicle.
  • the head-up display has a projection unit 1 and a combiner unit 2.
  • a plane mirror 3 which is connected via a coupling gear 4 and an extension 5 with the combiner 2 and a cover 6, which includes the optical unit of the head-up display in the cockpit of the motor vehicle.
  • Projection unit 1, plane mirror 3 and coupling gear 4 are located below the cover 6, the combiner unit 2 is located above the cover in front of the windshield. 7
  • the projection unit 1 of the head-up display according to the invention has an image generating device 8, which is designed as illuminated by light emitting diodes or other light sources light modulator such as. LCD or DMD or as a self-luminous display. Furthermore, the projection unit 1 has a combination of a first lens 9, a second lens 10 and a manganese mirror 11 arranged between these two lenses 9, 10.
  • the image to be displayed by the head-up display is generated by means of an LCD 8 illuminated by tricolor LED 's .
  • This image to be displayed is imaged via the optical elements 9, 10 and 11 of the projection unit 1 into an intermediate image 12.
  • a manganese mirror 11 is arranged between the positive lenses 9 and 10, via which both a folding of the beam path and a correction of the chromatic aberrations caused by the lenses 9 and 10 are undertaken.
  • the Manginapt 11 was positioned so that it lies in the aperture.
  • further EIe- elements, for. B. be avoided with other dispersions or diffractive optical elements for color correction.
  • the color correction is ensured solely by the combination of positive lens 9 for the telecentric imaging of the image produced on the display 8, the Mangin mirror 11 with its negative lens and another positive lens 10 arranged in the beam path after the Mangin mirror. This is done essentially by the selection of similar or identical materials for the lenses and the selected position of the Manginapts 11. Only then is it possible to produce a multi-color system with a large field of view and such a large eye-box.
  • the intermediate image 12 is projected via a plane mirror 3 and a combiner 2 in a virtual image, where it can be viewed by the driver of the motor vehicle.
  • the Combiner 2 is relatively strongly curved, it has a high refractive power. As a result, it is also possible to detect the rays running from the edge of the eye box to the edge of the virtual image without having to use extremely large optical elements in the projection unit 1.
  • the Combiner 2 is designed as a freeform surface and coated several times. Double-image suppression, reflectivity and transmission are ensured by this coating. In particular, mention should be made here of the so-called triple-notch coating, a coating which permits increased reflectivity with constant average transmission for three specific wavelength ranges. These spe- The coating adapted to the color spectra is mounted on the reflective concave side of the combiner 2.
  • Both plane mirror 3 and combiner 2 are movably mounted and connected via a coupling gear 4 and an extension 5 of the same.
  • the image or the eye box of the observer is adjusted in height and can thus be adapted to the seat adjustment or the size of the viewer.
  • the plane mirror 3 must be turned at half the angular speed.
  • the combiner 2 and the plane mirror 3 should rotate about the same axis, which should preferably lie on the surface of the plane mirror 3. This is made possible by the coupling mechanism 4 shown in FIG.
  • a multi-link coupling gear 4 is connected to the plane mirror 3 and moves over an extension 5 also not seen in this figure combiner 2.
  • a gear member 41 is fixedly connected to the plane mirror 3, another gear member 42 with the extension. 5
  • the articulation point 42 is as fixed as the articulation point 44. All other articulation points are movable and can change their position.
  • the joint member 45 which motivates the movement of the plane mirror 3 is only half as long as the joint member 46, which causes the movement of the combiner 2. This ensures that the combiner 2 is always rotated by twice the angular range of the plane mirror 3, so that the beam incidence angle does not change.
  • the glass cover 6 is not moved during the height adjustment. She can stay in her position.
  • FIG. 3 shows a variant of the head-up display according to the invention, which represents a further optimization with regard to the smallest possible realization of the projection unit 1 with a simultaneously large field of view.
  • a Positive lens 13 is arranged in the beam path between the display 8, Manginapt 11 and the position of the intermediate image 12 and the plane mirror 3 that both the beam path from the display 8 to Manginapt 11 and the Manginapt 11 to the intermediate image 12 and plane mirror 4, the positive lens 13th goes through.
  • the lens 13 is therefore passed through by the projection beam path twice, wherein the rays between the passages through the lens 13 on the manganese mirror 11 are reflected.
  • a single positive lens 13 takes over the functionality of the two lenses 9 and 10, that is, the image generated on the display 8 is imaged by them in an intermediate image 12 and thereby enlarged.
  • lens 13 and manganese mirror 11 whose negative lens is preferably made of the same material as the lens 13, color aberrations and other aberrations are corrected.
  • further lenses 9 and 10 can be provided, which offer further degrees of freedom, whereby an enlargement of the visual field is simplified.
  • One of these lenses 9 and 10 may also be designed as a free-form surface, which again allows an optimization of the compactness of the structure of the projection unit 1.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Instrument Panels (AREA)

Abstract

L'invention concerne un dispositif d'affichage tête haute, destiné en particulier à un véhicule automobile, ce dispositif comprenant une unité de projection (1) pourvue d'un générateur d'image (8) servant à générer une image virtuelle et un combineur (2) permettant de visualiser l'image virtuelle. Selon l'invention, l'unité de projection (1) présente un miroir de Mangin (11), au moins une lentille (9, 10; 13) étant placée dans la trajectoire du faisceau entre le générateur d'image (8) et le miroir de Mangin (11) et entre le miroir de Mangin (11) et le combineur (2). Cette configuration permet d'obtenir une correction des couleurs intrinsèque et d'obtenir ainsi un dispositif d'affichage tête haute en couleurs présentant un champ de vision étendu.
EP08805005A 2007-10-02 2008-10-02 Dispositif d'affichage tête haute destiné en particulier à un véhicule automobile Withdrawn EP2195695A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007047232A DE102007047232A1 (de) 2007-10-02 2007-10-02 Head-up Display für Kraftfahrzeug
PCT/EP2008/063220 WO2009047202A2 (fr) 2007-10-02 2008-10-02 Dispositif d'affichage tête haute destiné en particulier à un véhicule automobile

Publications (1)

Publication Number Publication Date
EP2195695A2 true EP2195695A2 (fr) 2010-06-16

Family

ID=39672602

Family Applications (3)

Application Number Title Priority Date Filing Date
EP08104260A Withdrawn EP2045647A1 (fr) 2007-10-02 2008-06-04 Affichage tête haute
EP08805003A Withdrawn EP2195698A1 (fr) 2007-10-02 2008-10-02 Dispositif d'affichage tête haute
EP08805005A Withdrawn EP2195695A2 (fr) 2007-10-02 2008-10-02 Dispositif d'affichage tête haute destiné en particulier à un véhicule automobile

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP08104260A Withdrawn EP2045647A1 (fr) 2007-10-02 2008-06-04 Affichage tête haute
EP08805003A Withdrawn EP2195698A1 (fr) 2007-10-02 2008-10-02 Dispositif d'affichage tête haute

Country Status (3)

Country Link
EP (3) EP2045647A1 (fr)
DE (1) DE102007047232A1 (fr)
WO (2) WO2009047202A2 (fr)

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DE102009002189A1 (de) 2009-04-03 2010-10-14 Linos Photonics Gmbh & Co. Kg Head-up Display und Beleuchtungseinheit für ein Head-up Display
WO2011111990A2 (fr) * 2010-03-10 2011-09-15 브이앤아이 주식회사 Dispositif d'affichage tête haute pour véhicule utilisant des lentilles multiples
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WO2022119993A1 (fr) 2020-12-04 2022-06-09 Solutia Inc. Système et procédé pour empêcher le visionnement non voulu d'une image projetée
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EP4256392A1 (fr) 2020-12-04 2023-10-11 Solutia Inc. Absorption sélective d'atténuation d'image secondaire dans des systèmes de hud
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Also Published As

Publication number Publication date
WO2009047202A2 (fr) 2009-04-16
WO2009047200A1 (fr) 2009-04-16
EP2045647A1 (fr) 2009-04-08
WO2009047202A3 (fr) 2009-06-04
EP2195698A1 (fr) 2010-06-16
DE102007047232A1 (de) 2009-04-16

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