WO2014023658A2 - Head-up-display - Google Patents

Head-up-display Download PDF

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Publication number
WO2014023658A2
WO2014023658A2 PCT/EP2013/066278 EP2013066278W WO2014023658A2 WO 2014023658 A2 WO2014023658 A2 WO 2014023658A2 EP 2013066278 W EP2013066278 W EP 2013066278W WO 2014023658 A2 WO2014023658 A2 WO 2014023658A2
Authority
WO
WIPO (PCT)
Prior art keywords
light
head
display
intermediate screen
screen
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/EP2013/066278
Other languages
German (de)
English (en)
French (fr)
Other versions
WO2014023658A3 (de
Inventor
Zhao YANNING
Frank Schliep
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
Priority to DE201311003876 priority Critical patent/DE112013003876A5/de
Priority to JP2015524802A priority patent/JP2015524944A/ja
Priority to US14/419,420 priority patent/US10261314B2/en
Priority to CN201380041248.6A priority patent/CN104520752B/zh
Publication of WO2014023658A2 publication Critical patent/WO2014023658A2/de
Publication of WO2014023658A3 publication Critical patent/WO2014023658A3/de
Anticipated expiration legal-status Critical
Ceased 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
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B5/00—Optical elements other than lenses
    • G02B5/20—Filters
    • 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
    • G02B27/0101—Head-up displays characterised by optical features
    • G02B2027/0145—Head-up displays characterised by optical features creating an intermediate image
    • 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
    • G02B27/10—Beam splitting or combining systems
    • G02B27/14—Beam splitting or combining systems operating by reflection only

Definitions

  • the invention relates to a head-up display, in particular for use in a vehicle, having a light source and a projection screen, wherein an intermediate screen is provided for aligning a light emitted by a light source and a consequent shaping of an image to be displayed on the projection screen.
  • Head-up displays are used to display a
  • a virtual image is output to a driver of the vehicle in this area.
  • these virtual images are output at a certain distance from the eyes of the observer, the distance being selected such that the refocusing of the eyes is reduced when the view changes from the display of the information into an external environment of the vehicle.
  • Such a representation of the information by means of the head-up display reduces the observer's effort required to acquire the information and allows a pictorial representation which conforms to the surroundings of the vehicle.
  • Such head-up displays include a
  • the intermediate screen on which the information to be displayed is projected.
  • the intermediate screen is transparent and designed for
  • Alignment of a light emitted by a light source provided.
  • the transmitted through the intermediate screen light is displayed by means of a projection screen as an image to be displayed.
  • a projection screen is formed as a separate screen or is formed by a windshield or designated as a combiner area this, which is partially transparent and partially reflective formed.
  • WO 2001/009709 A1 discloses a head-up display with a light source and a display for generating images, wherein these images are projected into a field of view of a user through an optical system.
  • the optical system comprises a diffractive combiner for introducing computer-generated holograms.
  • the light source and the display are controllable by means of an electronic control circuit.
  • Light source unit comprises successively arranged in the direction of the light beam, a non-coherent light generator, a device for increasing the coherence and a beam shaping device for scattering the light coming from the device for increasing the coherence on the back of the display.
  • Object of the present invention is to provide a comparison with the prior art improved head-up display.
  • the head-up display includes a light source and a
  • Projection screen wherein an intermediate screen for aligning a light emitted from a light source and a subsequent shaping of an image to be displayed on the projection screen is provided.
  • the intermediate screen is at least partially
  • Ambient light resulting backlighting of the image to be displayed is minimized. From this minimization, in turn, it follows that illumination of the image to be displayed with ambient light is also minimized in a particularly advantageous manner and, consequently, a contrast of the image to be displayed is increased. In this way it is further achieved that a representation of the image, in which this by a
  • Windshield of a vehicle superimposed visible environment is particularly realistic feasible.
  • the intermediate screen is
  • the intermediate screen comprises an optical filter, so that a further reduction of an influence of the
  • the optical filter according to a development is designed such that only the light generated by the light source can be reflected by the intermediate screen.
  • the optical filter for reducing the influence of the ambient light on the virtual image is designed such that
  • Ambient light can be absorbed, transmitted or reflected in a predetermined direction.
  • the intermediate screen is designed to be partially reflective in such a way that the backlighting of the image to be displayed resulting from ambient light is minimized.
  • the intermediate screen for this purpose comprises an optical filter which, according to a further embodiment, is designed such that only the light generated by the light source can be transmitted from the intermediate screen and according to another
  • Embodiment is designed such that ambient light is reflected, absorbable or deflected in a predetermined direction.
  • the projection screen also comprises an optical filter, which is designed such that only the light generated by the light source from the projection screen in the direction of
  • FIG. 1 shows schematically a first embodiment of a
  • FIG. 2 shows a reflection behavior of the intermediate screen according to FIG. 1 with respect to FIG. 1, by means of a light source of FIG Head-up displays generated light as a function of a frequency or wavelength of light, schematically a second embodiment of a head-up display according to the invention with an intermediate screen, the intermediate screen is transparent,
  • FIG. 4 schematically shows a transmission behavior of the
  • Light source of the head-up display generated light in
  • FIG. 5 shows schematically a reflection behavior of the intermediate screen according to FIG. 3 with respect to the light generated by means of the light source of the head-up display as a function of a light source
  • FIG. 1 shows schematically a first embodiment of a
  • the head-up display 1 comprises an imaging unit 2, which has a light source 2.1 and at least one so-called microsystem 2.2, in the
  • MEMS micro-electro-mechanical system
  • the light source 2.1 which is for example a laser
  • light L is generated with the colors red, green and blue.
  • an intermediate screen 3 which aligns the light and shaped so that an image to be displayed on a projection screen is created.
  • the disadvantage here is that existing ambient light leads to a backlighting of the intermediate screen, resulting in a reduction in the contrast of the image to be displayed. It follows, in turn, that an effect of the effect of a realistic representation in a superimposed representation of the visible environment is reduced by means of the image.
  • an intermediate screen 3 is in the
  • the intermediate screen 3 is formed reflective.
  • the reflection of the aligned light L takes place by means of
  • Tilt adjustable mirror 4 from which the light L is reflected onto another mirror 5.
  • the virtual image B is detected by a reflection of the light L by means of the
  • the projection screen 6 is formed for example as a separate screen and arranged in the area between a dashboard of the vehicle and a windshield. It is also possible for at least one section of the windshield, a so-called combiner, to form the projection screen 6.
  • the intermediate screen 3 in a further embodiment not shown in addition an optical filter which is designed such that only the light L generated by the light source 2.1 from the intermediate screen 3 in the direction of the mirror 4 is reflected, whereas ambient light is absorbed, transmitted or reflected in a direction other than mirror 4.
  • the optical filter is formed of a photoactive and / or photorefractive material, for example a polymer.
  • a holographic structure is preferably introduced into this material. This introduction takes place for example by means of one or more laser beams, so that by means of the intermediate screen 3 an amplitude and / or
  • Phase modulation of the incident light L and the ambient light takes place and the ambient light is filtered out.
  • the filtering takes place as a function of the wavelength and / or the angle of incidence of the
  • FIG. 2 schematically shows a reflection behavior R of FIG.
  • Light source 2.1 of the head-up display 1 generated light L as a function of a frequency f and a wavelength ⁇ of the light L.
  • the illustration illustrates that only the light L generated by the light source 1 is reflected.
  • FIG. 3 schematically shows a second exemplary embodiment of the invention
  • Head-up displays 1 according to the invention shown.
  • the intermediate screen 3 is partially transparent and is arranged such that it is transilluminated by the emitted light L, aligns it in a defined manner and transmits it to the mirror 4.
  • the intermediate screen 3 is likewise designed in such a way that the backlighting of the image B resulting from ambient light is minimized.
  • the intermediate screen 3 comprises an optical filter 7, wherein of the filter 7 only the light L generated by the light source 2.1 is transmitted. Ambient light is reflected, absorbed, or deflected in a direction other than mirror 4.
  • the optical filter 7, which is shown schematically in FIG. 4, is formed from a photoactive and / or photorefractive material, for example a polymer.
  • a holographic structure is preferably introduced into this material. This introduction takes place, for example, by means of one or more laser beams, so that an amplitude and / or phase modulation of the light L and of the ambient light impinging on it takes place by means of the intermediate screen 3 and the ambient light is filtered out.
  • the filtering takes place as a function of the wavelength ⁇ and / or the angle of incidence of the incident light L and ambient light.
  • FIG. 5 schematically shows a reflection behavior R of FIG.
  • Light source 2.1 of the head-up display 1 generated light L in dependence represented by a frequency f and a wavelength ⁇ of the light L.
  • the diagram illustrates that only the light L generated by the light source 1 is transmitted in the direction of the mirror 4.
  • the projection screen 6 comprises an optical filter according to the description of the first embodiment, so that only the light L is reflected from the projection screen 6 in the direction of the viewer, which was generated by the light source 2.1.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Instrument Panels (AREA)
PCT/EP2013/066278 2012-08-04 2013-08-02 Head-up-display Ceased WO2014023658A2 (de)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE201311003876 DE112013003876A5 (de) 2012-08-04 2013-08-02 Head-up Display
JP2015524802A JP2015524944A (ja) 2012-08-04 2013-08-02 ヘッドアップディスプレイ
US14/419,420 US10261314B2 (en) 2012-08-04 2013-08-02 Head-up display
CN201380041248.6A CN104520752B (zh) 2012-08-04 2013-08-02 平视显示器

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102012015502.6 2012-08-04
DE102012015502 2012-08-04

Publications (2)

Publication Number Publication Date
WO2014023658A2 true WO2014023658A2 (de) 2014-02-13
WO2014023658A3 WO2014023658A3 (de) 2014-06-12

Family

ID=48918394

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/066278 Ceased WO2014023658A2 (de) 2012-08-04 2013-08-02 Head-up-display

Country Status (5)

Country Link
US (1) US10261314B2 (enExample)
JP (1) JP2015524944A (enExample)
CN (1) CN104520752B (enExample)
DE (1) DE112013003876A5 (enExample)
WO (1) WO2014023658A2 (enExample)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104765155A (zh) * 2015-03-31 2015-07-08 郭滨刚 一种虚拟影像显示系统
JP2016161773A (ja) * 2015-03-02 2016-09-05 株式会社デンソー ヘッドアップディスプレイシステム
DE102023115948A1 (de) * 2023-06-19 2024-12-19 Bayerische Motoren Werke Aktiengesellschaft Hybrider Bildgeber mit einem Auflicht- oder Rücklicht-Projektor und einer LC-Matrix für ein HUD für ein Fahrzeug

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DE102013203616B4 (de) * 2013-03-04 2019-10-24 Sypro Optics Gmbh Vorrichtung zur Projektion eines Bildes in einen Anzeigebereich mit Schirm zur Zwischenbildanzeige
DE102014217180A1 (de) * 2014-08-28 2016-03-03 Robert Bosch Gmbh Bilderzeugungsvorrichtung für ein Head-up-Display, Head-up-Display und Verfahren zum Erzeugen eines Bilds für ein Head-up-Display
CN105045027B (zh) * 2015-08-12 2017-01-04 中国人民解放军95995部队 一种正投式虚像显示方法以及显示系统
FR3054326B1 (fr) * 2016-06-29 2022-07-15 Valeo Comfort & Driving Assistance Dispositif de generation d'images comprenant une zone de contact thermique, et afficheur tete haute associe
FR3054046B1 (fr) * 2016-06-29 2018-08-17 Valeo Comfort And Driving Assistance Dispositif de generation d'images et afficheur tete haute associe
JP6604287B2 (ja) * 2016-08-05 2019-11-13 株式会社デンソー ヘッドアップディスプレイ装置
KR102509086B1 (ko) 2017-07-05 2023-03-10 삼성디스플레이 주식회사 홀로그래픽 헤드 업 표시 장치
CN109407319B (zh) * 2018-11-30 2024-06-14 深圳点石创新科技有限公司 抬头显示系统和车辆
FR3102569A1 (fr) * 2019-10-23 2021-04-30 Valeo Comfort And Driving Assistance Afficheur tête-haute
KR102508931B1 (ko) 2020-07-23 2023-03-09 현대모비스 주식회사 홀로그래픽 hud
DE102023114430A1 (de) * 2023-06-01 2024-12-05 Bayerische Motoren Werke Aktiengesellschaft Projektorbasiertes HUD mit einem hohen Dynamikbereich für ein Fahrzeug
WO2025133562A1 (en) * 2023-12-21 2025-06-26 Bae Systems Plc Light security for head mounted displays
EP4575609A1 (en) * 2023-12-21 2025-06-25 BAE SYSTEMS plc Light security for head mounted displays
GB2636990A (en) * 2023-12-21 2025-07-09 Bae Systems Plc Light security for head mounted displays

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Publication number Priority date Publication date Assignee Title
JP2016161773A (ja) * 2015-03-02 2016-09-05 株式会社デンソー ヘッドアップディスプレイシステム
CN104765155A (zh) * 2015-03-31 2015-07-08 郭滨刚 一种虚拟影像显示系统
DE102023115948A1 (de) * 2023-06-19 2024-12-19 Bayerische Motoren Werke Aktiengesellschaft Hybrider Bildgeber mit einem Auflicht- oder Rücklicht-Projektor und einer LC-Matrix für ein HUD für ein Fahrzeug
WO2024260501A1 (de) * 2023-06-19 2024-12-26 Bayerische Motoren Werke Aktiengesellschaft Hybrider bildgeber mit einem auflicht- oder rücklicht-projektor und einer lc-matrix für ein hud für ein fahrzeug

Also Published As

Publication number Publication date
CN104520752A (zh) 2015-04-15
JP2015524944A (ja) 2015-08-27
CN104520752B (zh) 2018-10-12
DE112013003876A5 (de) 2015-04-16
US20150219894A1 (en) 2015-08-06
US10261314B2 (en) 2019-04-16
WO2014023658A3 (de) 2014-06-12

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