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WO1998020380A1 - Affichage frontal pour voitures - Google Patents

Affichage frontal pour voitures Download PDF

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Publication number
WO1998020380A1
WO1998020380A1 PCT/GB1997/002902 GB9702902W WO9820380A1 WO 1998020380 A1 WO1998020380 A1 WO 1998020380A1 GB 9702902 W GB9702902 W GB 9702902W WO 9820380 A1 WO9820380 A1 WO 9820380A1
Authority
WO
WIPO (PCT)
Prior art keywords
combiner
display
head
prism
coating
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/GB1997/002902
Other languages
English (en)
Inventor
Philip Parr-Burman
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 Ltd
Original Assignee
Pilkington PE Ltd
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 Pilkington PE Ltd filed Critical Pilkington PE Ltd
Priority to AU47151/97A priority Critical patent/AU4715197A/en
Publication of WO1998020380A1 publication Critical patent/WO1998020380A1/fr
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
    • G02B27/0149—Head-up displays characterised by mechanical 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
    • 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
    • G02B2027/0138—Head-up displays characterised by optical features comprising image capture systems, e.g. camera
    • 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
    • G02B2027/0156—Head-up displays characterised by mechanical features with movable elements with optionally usable elements

Definitions

  • This invention relates to head up displays (HUDs) suitable for use in mass-produced vehicles, and to mass-produced motor vehicles fitted with such HUDs.
  • HUDs head up displays
  • HUDs are already known for use with military vehicles and particularly military aircraft but in these vehicles which are fitted out for either a particular notional operator or for small variations to such notional operator the human operator is comparatively immobilised in his seat such that his head and eyes are confined to a comparatively small region of space.
  • the HUD includes a transparent combiner onto which is projected information to be reflected for viewing by the operator in super- imposition with his view of the outside world as he looks through the transparent combiner.
  • the combiner is factory-set to be critically located in the operator's line of sight, when in use.
  • a head up display suitable for use in a mass-produced motor vehicle, comprising a display source, a powered optical transmitting train including a beam- folding prism and a transparent combiner for reflecting information projected by the display source and transmitted through the optical transmitting train along an optical axis towards an operator's viewing station in super- imposition with the operators' view cf the outside world as he looks through the transparent combiner, wherein the transparent combiner comprises a plate carried by a parallel linkage arranged such that the plate may take up any one of a plurality of different positions in space respectively providing parallel optical axes towards the operator's viewing station, whereby the operator's viewing station may be located at any one of a plurality of different positions in space.
  • HUD head up display
  • the combiner is mounted between a pair of similar parallel linkages at each lateral edge of the combiner.
  • the parallel linkages include articulation joints provided with friction-grip elements, whereby an infinitely variable number of different positions in space can be achieved by manual adjustment.
  • the articulation joints may include friction-grip detent elements, whereby only a selected number of different positions in space can be achieved by manual adjustment between detent element positions.
  • the display source projects selected monochromatic light and the reflecting surface of the combiner is provided with an optical coating which selectively reflects the selected monochromatic light and transmits other wavelengths.
  • the reverse surface of the combiner is provided with an optical coating which is anti-reflective across the visible spectrum.
  • the combiner and the two coatings thereon have an average transmission across the visible spectrum of at least 80%, more preferably at least 85%. This arrangement enables the HUD to be used with a motor vehicle having a windscreen which imposes a 10% transmission loss across the visible spectrum whilst maintaining an overall 75% transmission performance.
  • the combiner plate itself may be made of glass or plastics such as CR-39 or polycarbonate.
  • the beam folding prism of the optical transmitting train is arranged to provide a multiple reflection of the beam within its volume to provide for beam folding whilst minimising the input aperture of the prism. It is particularly preferred to arrange the prism to have three internal reflections to maximise the advantages of multiple reflections, by providing the output face of the prism with a coating which is reflective or transmissive according to angle of incidence.
  • the display source may for example be a cathode ray tube (CRT) , a liquid crystal display (LCD) or another type of flat panel display, the latter being preferred because of its comparatively small bulk.
  • CTR cathode ray tube
  • LCD liquid crystal display
  • the present invention also provides a mass-produced motor vehicle including a head up display as previously set forth.
  • the vehicle further includes vehicle headlamps arranged to floodlight the field of view with radiation in the near infra-red waveband (750 to lOOOnm) and in the absence of visible radiation, a camera which is sensitive in the near infrared waveband mounted on the vehicle, preferably inboard of the vehicle, and adapted to collect an infra-red image of the field of view, signal processing circuitry adapted to enhance the infra-red image and arranged to drive the display source of the head up display to project the enhanced image towards the combiner .
  • vehicle headlamps arranged to floodlight the field of view with radiation in the near infra-red waveband (750 to lOOOnm) and in the absence of visible radiation
  • a camera which is sensitive in the near infrared waveband mounted on the vehicle, preferably inboard of the vehicle, and adapted to collect an infra-red image of the field of view
  • signal processing circuitry adapted to enhance the infra-red image and arranged to drive the display source of the
  • Fig 1 shows a diagram of a head-up display (HUD) in accordance with the present invention, and the environment in which it is housed;
  • HUD head-up display
  • Fig 2 shows a block diagram of the components of the HUD
  • Fig 3 shows part of the apparatus of Fig 1, namely, the display, projecting optics, linkages and combiner;
  • Fig 4a shows a graph of the reflected radiation as a percentage of the incident radiation versus the wavelength of the radiation, for the coating applied to the combiner;
  • Fig 4b shows a graph of the transmitted radiation as a percentage of the incident radiation versus the wavelength of the radiation, for the coating applied to the combiner;
  • Fig 5a shows the arrangement of the parallel linkages connecting the housing and the combiner when the combiner is in the retracted position
  • Fig 5b shows the arrangement of the parallel linkages connecting the housing and the combiner when the combiner is in use .
  • Fig 1 shows a diagram of a head-up display (HUD) 16 in accordance with the present invention housed in the environment of a car 8
  • the parts of the car 8 that are shown are: a body 10, a windscreen 12, and a roof 14.
  • the HUD 16 is mounted on the roof 14 and is arranged to project an image to a driver 18 and to permit the driver 18 to view the outside world 9 through the HUD 16.
  • the components of the HUD 16 are shown in Fig 2, which also shows two infra-red radiation (IRR) sources 30 located in the headlights of the car 8. These IRR sources 30 are located to irradiate an area corresponding to the area illuminated by the headlights when the headlights are on the main beam setting.
  • the IRR sources 30 emit radiation in the wavelength range 750 to lOOOnm which corresponds to the near infra-red.
  • the detector 32 is particularly sensitive to radiation in the wavelength range from 750 to lOOOnm.
  • the detector 32 generates an electrical signal corresponding to the IRR received.
  • the electrical signal from the detector 32 is transferred to a signal processor 34 via a signal carrier 36.
  • the signal processor 34 receives the electrical signal and processes the signal using standard techniques to produce an enhanced image which represents the objects in front of the car 8.
  • the image enhancing process involves adjusting the contrast of the image and "sharpening" the edges of objects, such as roads, signposts, and pedestrians, which appear in the image.
  • the enhanced image is then transferred to the HUD 16 in a suitable format. In particular, the image is transferred to a flat-panel display device 40 in the correct format to drive that device 40.
  • the flat-panel display device 40 is chosen because of its small size, low weight, and low operating current requirements. These advantages are particularly suitable for a HUD 16 which is to be used in a car, because of the limited space available inside a car.
  • the flat-panel display 40 displays the image received from the signal processor 34.
  • the display 40 is in close proximity to projection optics 42 which receive the displayed image, fold the projection path of the received image, and project a collimated image onto a planar plastic combiner optic or plate 44 made of polycarbonate which is located between the driver 18 and the windscreen 12.
  • One side of the combiner 44 (the side facing the driver 18) is coated with a partially reflective coating 46 (which is explained in more detail below) which reflects the collimated image to a viewspace 48.
  • a partially reflective coating 46 which is explained in more detail below.
  • the normal view is the view that the driver 18 has through the combiner 44 with no superimposed image present, that is, the forward view of the outside world 9 through the combiner 44.
  • the other side of the combiner 44 (the side facing the windscreen 12) is coated with an anti-reflective coating 50.
  • the anti-reflective coating 50 operates on all wavelengths across the visible spectrum, which reduces any spurious reflections that might otherwise be transmitted.
  • the HUD is shown in more detail in Fig 3, which shows a housing 58 for the flat-panel display 40, collecting optics 60, a beam-folding prism 62, and an exit optic 64.
  • the collecting optics 60 are adjacent to the flat-panel display 40 to collect the emission from the flat-panel display 40 and to guide the collected radiation into an entrance face 66 of the prism 62.
  • An optical filter 68 is located near the display 40 and is arranged to transmit a selected monochromatic wavelength.
  • the filter 68 is coated with a transparent electrically conducting coating (indium tin oxide) to eliminate EMC noise generated by the display 40.
  • the prism 62 provides an axis deviation arrangement which provides multiple reflection of incident rays within its volume to provide for beam folding.
  • the prism 62 has an entrance face 66 which is coated with an anti-reflection coating, a first surface 70 which is mirrored for reflecting incident radiation and a second surface 72 which has a dichroic coating for reflecting or transmitting incident radiation depending on the angle of incidence of the incident radiation.
  • the first and second surfaces 70,72 are mutually inclined at an acute angle.
  • the second surface 72 reflects selectively only a precisely defined spectral or angular bandwidth, radiation outside of that bandwidth being transmitted.
  • the second surface 72 acts as an angular edge filter that has a very fast transition between reflection and transmission, reflection occurring at lower angles of incidence and transmission occurring at higher angles of incidence.
  • the two surfaces 70,72 together function to produce an angular bend in the optical axis without significant loss of radiation by the second surface 72 selectively transmitting radiation at angles of incidence outside those required for reflection.
  • the exit optic 64 Adjacent to the second surface 72 is the exit optic 64 which is an aspheric lens.
  • the aspheric lens 64 collimates the radiation transmitted from the second surface 72 and guides the collimated radiation to the combiner 44.
  • the combiner 44 is pivotably connected to the housing 58 by means of parallel linkages 75 (as will be explained) .
  • Figure 3 also illustrates the paths taken by optical rays emergent from the flat panel display 40 in their passage to the viewspace 48.
  • a first ray 76 and a second ray 78 are shown radiating from point A.
  • the first ray 76 passes through the collecting optics 60 with little or no change in the direction of the ray and is incident on the first surface 70 where it is reflected to the second surface 72.
  • the first ray 76 is reflected back to the first surface 70 because the angle of incidence at surface 72 is not sufficiently acute.
  • the first ray 76 is reflected back to the second surface 72 and is transmitted through the second surface 72 because the angle of incidence is now sufficiently acute.
  • the second ray 78 is also reflected by the first surface 70 to the second surface 72, where it is reflected back to the first surface 70 because the angle of incidence is not sufficiently acute. At the first surface 70 the second ray 78 is reflected back to the second surface 72 where it is transmitted through the second surface 72 because the angle of incidence is now sufficiently acute.
  • Both rays 76,78 on emerging from the prism 62 are collimated and guided by the aspheric lens 64 towards the combiner 44.
  • the partially reflective coating 46 on the combiner 44 reflects the rays 76,78 towards the viewspace 48.
  • Figs 4a and 4b show graphs of the reflection and transmission characteristics of the trichroic coating 46, respectively.
  • the trichroic coating 46 is sensitive to a small wavelength range of radiation, similar to a band-pass filter and only permits radiation within the small range to be reflected; the other wavelengths not in the small range are transmitted.
  • the use of a trichroic coating 46 increases the average amount of radiation transmitted (the average transmission across the visible spectrum) from the outside world 9 through the combiner 44 to the driver 18.
  • the flat-panel display device 40 in combination with the filter 68 is also adapted to emit radiation only in the wavelength range to which the trichroic coating 46 is sensitive, namely, green light (approximately 520nm to 560nm) .
  • Fig 4b shows an average transmission of visible (white) light
  • the combiner 44 will have a less drastic effect on light reduction than if the partially reflective coating 46 reflected equally across the entire wavelength range of visible light. This is important because in some countries it is mandatory to have at least 75% of the light incident on the windscreen of a vehicle transferred to the driver .
  • the location of the viewspace 48 is determined by the relative position of the combiner 44 with respect to the projection optics 42.
  • the combiner is adjustable so that it can be used by drivers 18 of different heights.
  • Fig 5a shows the arrangement of the parallel linkages 75 connecting the housing 58 and the combiner 44 when the combiner 44 is in the retracted position
  • Fig 5b shows the linkages extended.
  • the combiner 44 is mounted between a pair of such linkages 75, i.e. there is a linkage 75 at each lateral edge of the combiner 44.
  • the combiner 44 is sufficiently light in weight only one linkage 75 will be required.
  • the first limb 75a is mounted on the housing 58 by means of a first pin joint 96, and is mounted on the combiner 44 by means of a second pin joint 98.
  • the second limb 75b is mounted on the housing 58 at the same point as the first limb 75a by means of the same first pin joint 96.
  • the second limb 75b and the third limb 75c are connected by means of a third pin joint 100.
  • the third limb 75c is connected to the combiner 44 by means of a fourth pin joint 102. Joints 98 and 102 are spaced apart on the combiner 44 by the same distance as joints 96 and 100. Limbs 75a and 75c are of equal length.
  • the four pin joints 96, 98, 100, 102 are articulated joints, that is, the limbs are capable of rotating about these pin joints.
  • a locking device 104 in the first pin joint 96 which locks the second limb 75b (but not limb 75a) in either one of two positions, these two positions are the retracted linkages position and the extended linkages position of Figs 5a and 5b respectively.
  • the driver 18 can overcome the effect of the locking device 104 and manually move the combiner 44 from its retracted position to its in-use position by pulling the combiner away from the HUD 16.
  • the position of the combiner 44 can then be varied to an infinite number of positions in space by moving the combiner 44 towards or away from the driver 18.
  • Friction-grip elements 106 are associated with some or all of the pin joints to ensure that the limbs will not move as a result of the weight of the combiner 44 or the limbs 75a, b,c, or as a result of sudden vertical movement of the car 8 caused by an uneven road surface. The friction-grip elements 106 also ensure that the angle between the second limb 75b and the third limb 75c will be maintained until the combiner 44 is moved by the driver 18.
  • the viewspace 48 is increased because the combiner 44 can be adjusted to reflect the collimated image from the flat- panel display 40 to a variety of positions in space, enabling drivers 18 of different heights to use the HUD 16.
  • the combiner 44 can be moved towards the housing 58 to the Figure 5a position by overcoming the effect of the locking device 104, thus removing the combiner 44 from the field of view of the driver 18.
  • the HUD may be used in man- produced vehicles other than cars, such as lorries.
  • Two infra-red radiation sources 30 are used in the above embodiment, however, in other embodiments more or less than two sources 30 may be used. In particular, if the detector 32 is sensitive to wavelengths in the thermal infra-red range (3 to 5 micrometres, or 8 to 12 micrometres) then no sources 30 are required.
  • detector 32 may be located in parts of the vehicle body other than the headlights, for example, in the front bumper.
  • a source 30 (and detector 32) may be located at the rear of the vehicle to provide a rear view to facilitate reversing of the vehicle .
  • the display device 40 is not necessarily an Flat-panel

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

Abstract

La présente invention a trait à un affichage frontal conçu pour être utilisé dans un véhicule à moteur fabriqué en série (8), qui se compose d'une source d'affichage (40) produisant une image générée par un détecteur infrarouge (32) à l'intention du conducteur (18) du véhicule, image se superposant au champs de vision du conducteur (9). L'affichage frontal se compose d'un combineur (44) monté sur un bras articulé parallèle (75) pour que, lorsque le combineur (44) est en fonction, et non pas en position de repos, il puisse être déplacé dans une position offrant une grande variété d'axes parallèles dirigés vers le poste d'observation de l'opérateur, poste pouvant par conséquent être aménagé dans différentes positions dans l'espace pour permettre son utilisation par des conducteurs (18) de différentes tailles.
PCT/GB1997/002902 1996-11-07 1997-10-24 Affichage frontal pour voitures Ceased WO1998020380A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU47151/97A AU4715197A (en) 1996-11-07 1997-10-24 Car hud

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9623216.0 1996-11-07
GBGB9623216.0A GB9623216D0 (en) 1996-11-07 1996-11-07 Car HUD

Publications (1)

Publication Number Publication Date
WO1998020380A1 true WO1998020380A1 (fr) 1998-05-14

Family

ID=10802602

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1997/002902 Ceased WO1998020380A1 (fr) 1996-11-07 1997-10-24 Affichage frontal pour voitures

Country Status (3)

Country Link
AU (1) AU4715197A (fr)
GB (1) GB9623216D0 (fr)
WO (1) WO1998020380A1 (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348858A (en) * 1999-04-14 2000-10-18 Barr & Stroud Ltd A head up display (HUD) for a mass-produced motor vehicle
FR2818393A1 (fr) * 2000-12-19 2002-06-21 Thomson Csf Procede de fabrication d'un ensemble de viseurs tete haute adaptes a des equipements de type donne
US6791760B2 (en) * 2001-07-24 2004-09-14 Itt Manufacturing Enterprises, Inc. Planar diffractive relay
US7271960B2 (en) * 2005-07-25 2007-09-18 Stewart Robert J Universal vehicle head up display (HUD) device and method for using the same
EP2045647A1 (fr) * 2007-10-02 2009-04-08 LINOS Photonics GmbH & Co. KG Affichage tête haute
EP2339392A1 (fr) * 2009-11-12 2011-06-29 Johnson Controls Technology Company Dispositif d'affichage, notamment pour véhicule automobile
WO2012035140A1 (fr) 2010-09-17 2012-03-22 Johnson Controls Gmbh Système pour déplacer des écrans de projection pour des affichages tête haute
DE102011118853A1 (de) * 2011-08-18 2013-02-21 Johnson Controls Gmbh Anzeigevorrichtung
EP4575609A1 (fr) * 2023-12-21 2025-06-25 BAE SYSTEMS plc Sécurité lumineuse pour visiocasques
WO2025133562A1 (fr) * 2023-12-21 2025-06-26 Bae Systems Plc Sécurité lumineuse pour visiocasques
GB2636990A (en) * 2023-12-21 2025-07-09 Bae Systems Plc Light security for head mounted displays

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802764A (en) * 1971-07-23 1974-04-09 Elliott Bros Combiner mounting for head-up display
US4188090A (en) * 1977-06-01 1980-02-12 Elliott Brothers (London) Limited Retractable head-up displays
FR2594563A1 (fr) * 1986-02-14 1987-08-21 Thomson Csf Dispositif de visualisation collimatee tete haute, compact et escamotable
EP0479439A2 (fr) * 1990-09-29 1992-04-08 Pilkington P.E. Limited Appareil d'affichage optique
FR2679046A1 (fr) * 1991-07-12 1993-01-15 Sextant Avionique Dispositif de visualisation tete haute.
EP0679549A1 (fr) * 1994-04-27 1995-11-02 Nippondenso Co., Ltd. Collimateur de pilotage pour véhicules

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3802764A (en) * 1971-07-23 1974-04-09 Elliott Bros Combiner mounting for head-up display
US4188090A (en) * 1977-06-01 1980-02-12 Elliott Brothers (London) Limited Retractable head-up displays
FR2594563A1 (fr) * 1986-02-14 1987-08-21 Thomson Csf Dispositif de visualisation collimatee tete haute, compact et escamotable
EP0479439A2 (fr) * 1990-09-29 1992-04-08 Pilkington P.E. Limited Appareil d'affichage optique
FR2679046A1 (fr) * 1991-07-12 1993-01-15 Sextant Avionique Dispositif de visualisation tete haute.
EP0679549A1 (fr) * 1994-04-27 1995-11-02 Nippondenso Co., Ltd. Collimateur de pilotage pour véhicules

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2348858B (en) * 1999-04-14 2001-06-06 Barr & Stroud Ltd Head up display
GB2348858A (en) * 1999-04-14 2000-10-18 Barr & Stroud Ltd A head up display (HUD) for a mass-produced motor vehicle
FR2818393A1 (fr) * 2000-12-19 2002-06-21 Thomson Csf Procede de fabrication d'un ensemble de viseurs tete haute adaptes a des equipements de type donne
EP1223455A1 (fr) * 2000-12-19 2002-07-17 Thales Viseur tête haute apte à s'adapter à des équipements d'un type donné
US6813086B2 (en) 2000-12-19 2004-11-02 Thales Head-up display adaptable to given type of equipment
US6791760B2 (en) * 2001-07-24 2004-09-14 Itt Manufacturing Enterprises, Inc. Planar diffractive relay
US7271960B2 (en) * 2005-07-25 2007-09-18 Stewart Robert J Universal vehicle head up display (HUD) device and method for using the same
WO2007014180A3 (fr) * 2005-07-25 2007-10-18 Robert J Stewart Dispositif universel de vision tete haute (hud) d'un vehicule et procede d'utilisation associe
EP2045647A1 (fr) * 2007-10-02 2009-04-08 LINOS Photonics GmbH & Co. KG Affichage tête haute
WO2009047200A1 (fr) * 2007-10-02 2009-04-16 Linos Photonics Gmbh & Co. Kg Dispositif d'affichage tête haute
US8477426B2 (en) 2009-11-10 2013-07-02 Johnson Controls Technology Company Display device, notably for a motor vehicle
EP2339392A1 (fr) * 2009-11-12 2011-06-29 Johnson Controls Technology Company Dispositif d'affichage, notamment pour véhicule automobile
CN102141681A (zh) * 2009-11-12 2011-08-03 江森自控科技公司 显示装置
CN102141681B (zh) * 2009-11-12 2014-12-17 江森自控科技公司 显示装置
WO2012035140A1 (fr) 2010-09-17 2012-03-22 Johnson Controls Gmbh Système pour déplacer des écrans de projection pour des affichages tête haute
JP2014500170A (ja) * 2010-09-17 2014-01-09 ジョンソン・コントロールズ・ゲー・エム・ベー・ハー ヘッドアップディスプレイ用投影スクリーンを動かすアセンブリ
KR101802306B1 (ko) * 2010-09-17 2017-11-28 존슨 컨트롤스 게엠베하 헤드 업 디스플레이용 투영 스크린을 이동시키기 위한 조립체
DE102011118853A1 (de) * 2011-08-18 2013-02-21 Johnson Controls Gmbh Anzeigevorrichtung
US9360669B2 (en) 2011-08-18 2016-06-07 Johnson Controls Gmbh Display device
EP4575609A1 (fr) * 2023-12-21 2025-06-25 BAE SYSTEMS plc Sécurité lumineuse pour visiocasques
WO2025133562A1 (fr) * 2023-12-21 2025-06-26 Bae Systems Plc Sécurité lumineuse pour visiocasques
GB2636990A (en) * 2023-12-21 2025-07-09 Bae Systems Plc Light security for head mounted displays

Also Published As

Publication number Publication date
GB9623216D0 (en) 1997-01-08
AU4715197A (en) 1998-05-29

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