WO2016092221A1 - Dispositif de génération d'images et afficheur tête haute de véhicule automobile - Google Patents
Dispositif de génération d'images et afficheur tête haute de véhicule automobile Download PDFInfo
- Publication number
- WO2016092221A1 WO2016092221A1 PCT/FR2015/053423 FR2015053423W WO2016092221A1 WO 2016092221 A1 WO2016092221 A1 WO 2016092221A1 FR 2015053423 W FR2015053423 W FR 2015053423W WO 2016092221 A1 WO2016092221 A1 WO 2016092221A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- housing
- light
- reflecting surface
- generating device
- display
- Prior art date
Links
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 31
- 239000004033 plastic Substances 0.000 claims description 5
- 238000002347 injection Methods 0.000 claims description 4
- 239000007924 injection Substances 0.000 claims description 4
- 229910052751 metal Inorganic materials 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 230000003287 optical effect Effects 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
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- 238000005516 engineering process Methods 0.000 description 2
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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- 230000031700 light absorption Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Classifications
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- B60R11/0229—Arrangements for holding or mounting articles, not otherwise provided for for radio sets, television sets, telephones, or the like; Arrangement of controls thereof for displays, e.g. cathodic tubes
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- B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
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-
- 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
- G02B2027/0167—Emergency system, e.g. to prevent injuries
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
- G02F1/1362—Active matrix addressed cells
- G02F1/1368—Active matrix addressed cells in which the switching element is a three-electrode device
Definitions
- the invention relates to an image generation device for a motor vehicle head-up display for informing users of the vehicle, in particular its driver.
- HUD head-up display
- This type of head-up display for a motor vehicle requires obtaining an image with sufficient brightness so that the user, and in particular the driver of the vehicle, can sufficiently see the image, and this in any situation, day and night and according to the weather conditions.
- TFT liquid crystal screen technology
- -LCD for "Thin-Film Transistor Liquid Crystal Display”
- LED light-emitting diodes
- LED Light-Emitting Diode
- the image generation device comprises various elements for processing and / or filtering the light in order to optimize the backlighting, called in their optical system assembly.
- These elements successively traversed by the light coming from the LEDs toward the liquid crystal screen are generally a lens array, a collimator and a diffuser for the collimation and homogenization of the light coming from the LEDs.
- the collimator is formed of a cylindrical biconvex lens extending transversely over a dimension at least equal to the width of the liquid crystal screen, such as of the order of 30 millimeters, so as to illuminate the LCD screen over the entire width. It is therefore a lens of significant size, usually made specifically.
- the image generation device can be installed under the vehicle dashboard. However, the available space under the dashboard is reduced. It is particularly occupied by the ventilation duct, the steering column and other components of the vehicle so that it is not always possible to integrate an image generation device.
- An object of the present invention is to provide an image generation device that is better adapted to the space available in the vehicle.
- the subject of the invention is an image generation device for a motor vehicle head-up display, comprising a liquid crystal screen and a backlighting device, said backlight device comprising:
- At least one electroluminescent diode At least one electroluminescent diode
- the image generating device further comprising a reflective surface arranged in a bent portion of the housing and oriented to reflect light emitted from the at least one light emitting diode towards the screen.
- the reflecting surface is concave.
- a concave reflecting surface makes it possible to form an additional collimation stage of the light, making it possible to obtain a beam of parallel light rays at the level of the liquid crystal screen, without requiring the additional use of an additional collimating lens, particularly bulky and expensive.
- the reflective surface can be defined by the sum of the equation of a conic and a series of polynomials.
- the parameters of the equation of the Reflective surface can be optimized by software simulation.
- the reflecting surface is an inclined flat surface.
- the image generation device comprises a support fixed to the housing, the reflecting surface being formed by a metal coating deposited on the support,
- the support is obtained by plastic injection
- the reflecting surface is formed by an inner surface of the bent portion of the housing,
- the reflecting surface is a mirror surface
- the housing elbow forms an angle between 30 and 120 °.
- the invention also relates to a head-up display, characterized in that it comprises an image generating device as described above.
- FIG. 1 is a schematic perspective view of a first exemplary embodiment of an image generation device
- FIG. 2 shows a schematic view of a head-up display
- FIG. 3 is a schematic perspective view of a second exemplary embodiment of an image generating device
- FIG. 4 is a view of the image generation device of FIG. a view substantially from below.
- the identical elements bear the same reference numbers.
- FIG. 1 represents a first embodiment of a device of image generation 10.
- the image generation device 10 comprises a liquid crystal screen 12 and a backlighting device 14.
- the LCD 12 is for example a thin-film transistor liquid crystal display, commonly called TFT-LCD screen (for "Thin-Film Transistor Liquid Crystal Display”).
- the backlighting device 14 comprises in particular at least one and preferably a set of light-emitting diodes 16, also called LEDs or LEDs (for "Light Emitting Diodes” in English), and used in the following description ), placed on a support plate 18 of the backlighting device 14.
- the support plate 18 comprises a printed circuit, also called PCB (for "Printed Circuit Board” in English).
- the printed circuit used can be for example of type FR4 (for "Flame Resistant” in English) or IMS (for "Insulated Metal Substrate” in English).
- FR4 for "Flame Resistant” in English
- IMS for "Insulated Metal Substrate” in English.
- the use of an IMS circuit notably allows better heat dissipation.
- the printed circuit allows both the physical medium and the electrical connection (to a power supply and to any other electronic components not shown) of the LEDs 16.
- these elements forming part of the backlighting device 14 and successively traversed by the light coming from the LEDs 16 in the direction of the liquid crystal screen 12, are a network of lenses 20 and a diffuser 22.
- the lens array 20 makes it possible to form a first collimation stage of the light coming from the LEDs 16 to limit the losses of light power if a portion of light is not directed towards the liquid crystal screen 12.
- the network 20 comprises an LED lens 16, each lens being disposed above each LED 16.
- the diffuser 22, arranged upstream of the liquid crystal screen 12 in the propagation direction of the light, allows the homogenization of the light, so as to illuminate the liquid crystal screen 12 to allow the formation of a light. image of good quality, that is to say substantially uniform brightness.
- the diffuser 22 makes it possible to mask the inside of the backlighting device 14.
- the backlighting device 14 also comprises a housing 28 surrounding the space contained between the LEDs 16 and the liquid crystal screen 12, generally called a light box, in particular in the automotive field.
- the housing 28 allows in particular that the light propagating from the LEDs 16 to the liquid crystal screen 12 remains in the backlighting device 14.
- the housing 28 is bent, that is to say that its main orientation is not rectilinear but has at least one inclination.
- the elbow of the housing 28 forms an angle, for example between 30 and 120 °.
- the housing 28 has a bend forming an angle of the order of 90 °.
- the bent portion 28c of the housing 28 may be inclined in the space in one or more directions of the mark (X, Y, Z), depending on the available space.
- the image generation device 10 further comprises a reflecting surface 31 arranged in the bent portion 28c of the housing 28.
- the reflecting surface 31 is oriented to reflect the light emitted by the LEDs 16 towards the liquid crystal screen 12.
- the reflecting surface 31 may be a mirror surface which reflects the light rays symmetrically, the angle of incidence of the light rays being equal to the angle of reflection so that all the light rays can be directed towards the diffuser 22.
- the reflection coefficient of the mirror surface concave 31 is for example greater than or equal to 90%.
- the reflecting surface 31 is concave.
- a concave reflecting surface 31 makes it possible to form a second collimation stage of the light, making it possible to obtain a beam of parallel light rays at the level of the liquid crystal screen 12, without requiring the additional use of an additional collimating lens. particularly cumbersome and expensive.
- the concave reflecting surface 31 may have a portion of sphere, ellipse, parabola or hyperbola.
- the reflecting surface 31 is defined by the sum of the equation of a conic and a series of polynomials.
- This surface can be defined by computer program, such as a "Freeform Surface” in English obtained by an optical design program such as "Zemax”.
- the equation of the reflecting surface 31 can thus be defined in the reference (X, Y, Z) by the following equation: or
- N is the number of polynomial coefficients
- k is the taper (or constant of the conic)
- E is the term of the polynomial in x and y of degree i.
- the maximum order of the series of polynomials is twenty for a maximum of 230 polynomial coefficients.
- the values of positions x and y are divided by a normalized radius value so that the polynomial coefficients are dimensionless.
- the parameters of the equation of the reflecting surface 31 can thus be optimized by software simulation.
- the housing 28 is for example of plastic material. It is for example obtained by injection.
- the housing 28 may be made of a reflective material, such as polycarbonate, to prevent losses of light power by light absorption.
- the reflective surface 31 is a separate element of the housing 28, to facilitate the realization.
- the image generation device 10 may comprise a support 26 fixed to the housing 28, for example by gluing or by force mounting, possibly with the interposition of foam.
- the support 26 is for example of plastic material. It can be obtained by plastic injection, which makes it possible to obtain any shape, including complex forms of the "Freeform Surface" type.
- the reflecting surface 31 may be formed by a metal coating, such as aluminum, deposited on the support 26.
- Figure 2 shows the image generation device 10 in a head-up display.
- the display 100 Downstream of the liquid crystal display 12, the display 100 comprises a plane mirror 126 and a combiner 125.
- the image path is symbolized by three dashed arrows 30 which, once issued from the generating device 10, is reflected on the mirror 126 before being projected on the combiner 125.
- the latter allows a magnification and / or, by transparency, a display of the image beyond the combiner 125, in particular beyond the pare -brise the vehicle in an area 128 or the windshield of the vehicle equipped with said display
- the light 30 which is projected on the combiner 125 is reflected on the eye 127 of the driver of the motor vehicle.
- FIGS. 3 and 4 illustrate a second exemplary embodiment of the image generation device 10.
- the optical system comprises a collimator
- the LEDs 16 being positioned in the focus of the collimator 21.
- the collimator 21 is for example a cylindrical biconvex lens, that is to say that the biconvex shape of the lens extends by translation in the Y direction, on a dimension at least equal to the width of the crystal screen liquid 12, for example of the order of 30 millimeters, so as to illuminate the entire width of the liquid crystal screen 12.
- the reflecting surface 32 is arranged in the bent portion of the housing 29c, and is oriented to reflect the light emitted by the LEDs 16 towards the liquid crystal screen 12.
- the reflective surface 32 is planar. It forms an angle ⁇ greater than 0 ° and less than 90 °, such that an angle between 30 and 60 °, with the main direction P of a light corridor 29b of the housing 29, located downstream of the angled portion 29c in the direction of propagation of the light beam.
- the reflecting surface 32 is inclined by 45 °.
- the reflecting surface 32 may be that of a separate element of the housing 29 or may be formed by an inner surface of the bent portion 29c of the housing 29, to reduce the number of parts and thus the cost of the image generating device . In addition, the assembly is facilitated. In the example shown, the reflective surface 32 forms the bent portion 29c of the housing 29 and connects the first light corridor 29a to the second light path 29b perpendicular.
- the liquid crystal screen 12 may be inclined in the image generation device 10. It forms an angle, for example between 0 ° and 40 °, with the main direction P of the second light corridor 28b of the housing 28.
- the inclined screen 12 makes it possible to avoid dazzling of the conductor by the sun's light rays by reflection in the mirror 126 of the display 100.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mathematical Physics (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Combustion & Propulsion (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Instrument Panels (AREA)
- Liquid Crystal (AREA)
- Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201580066764.3A CN107466377A (zh) | 2014-12-11 | 2015-12-10 | 用于生成图像和机动车辆的平视显示器的装置 |
JP2017531310A JP2018514796A (ja) | 2014-12-11 | 2015-12-10 | 画像を生成する装置および自動車のヘッドアップディスプレイ |
US15/534,398 US20170343856A1 (en) | 2014-12-11 | 2015-12-10 | Device for generating images and head-up display of automotive vehicle |
EP15817998.6A EP3230112A1 (fr) | 2014-12-11 | 2015-12-10 | Dispositif de génération d'images et afficheur tête haute de véhicule automobile |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014118380.0A DE102014118380A1 (de) | 2014-12-11 | 2014-12-11 | Anzeigevorrichtung für ein Kraftfahrzeug mit Kraftsensor, Kraftfahrzeug sowie Verfahren |
DEDE102014118380.0 | 2014-12-11 | ||
FR1557270 | 2015-07-29 | ||
FR1557270A FR3030065B1 (fr) | 2014-12-11 | 2015-07-29 | Dispositif de generation d'images et afficheur tete haute de vehicule automobile |
Publications (1)
Publication Number | Publication Date |
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WO2016092221A1 true WO2016092221A1 (fr) | 2016-06-16 |
Family
ID=54838358
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/079086 WO2016091931A1 (fr) | 2014-12-11 | 2015-12-09 | Dispositif d'affichage pour véhicule automobile comprenant un capteur de force, véhicule automobile et procédé |
PCT/FR2015/053423 WO2016092221A1 (fr) | 2014-12-11 | 2015-12-10 | Dispositif de génération d'images et afficheur tête haute de véhicule automobile |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/EP2015/079086 WO2016091931A1 (fr) | 2014-12-11 | 2015-12-09 | Dispositif d'affichage pour véhicule automobile comprenant un capteur de force, véhicule automobile et procédé |
Country Status (7)
Country | Link |
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US (2) | US10065572B2 (fr) |
EP (1) | EP3230111B1 (fr) |
JP (1) | JP2018514796A (fr) |
CN (2) | CN107107760B (fr) |
DE (1) | DE102014118380A1 (fr) |
FR (1) | FR3030065B1 (fr) |
WO (2) | WO2016091931A1 (fr) |
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WO2019009322A1 (fr) * | 2017-07-04 | 2019-01-10 | 株式会社ホンダロック | Dispositif d'affichage de l'environnement du véhicule |
JP2020505749A (ja) * | 2017-01-13 | 2020-02-20 | ▲シー▼創電子股▲フン▼有限公司 | バックライトデバイス |
CN111712404A (zh) * | 2018-02-23 | 2020-09-25 | Zkw集团有限责任公司 | 用于机动车头灯的光模块 |
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DE102016122647A1 (de) * | 2016-11-24 | 2018-05-24 | Valeo Schalter Und Sensoren Gmbh | Vereinfachte Abdeckungs-Kinematik für eine Kopf-oben-Anzeige eines Kraftfahrzeugs |
TWI612336B (zh) * | 2016-12-01 | 2018-01-21 | 光寶電子(廣州)有限公司 | 抬頭顯示器 |
KR101912648B1 (ko) | 2017-06-02 | 2018-10-29 | 콘티넨탈 오토모티브 게엠베하 | 헤드업 디스플레이용 구동장치 |
US10625688B2 (en) * | 2017-11-06 | 2020-04-21 | Global Ip Holdings, Llc | Assembly capable of deploying an electronic device having a display screen in a vehicle |
JP7005112B2 (ja) * | 2018-03-05 | 2022-01-21 | 矢崎総業株式会社 | 表示システム、及び、車載システム |
CN111837073B (zh) * | 2018-03-20 | 2022-10-11 | 索尼公司 | 图像显示设备 |
TWI699499B (zh) * | 2018-06-26 | 2020-07-21 | 矽創電子股份有限公司 | 背光裝置 |
US10894609B2 (en) | 2018-08-10 | 2021-01-19 | Honeywell International Inc. | Flammability resistant visual display assembly |
CN109471262A (zh) * | 2018-10-16 | 2019-03-15 | 中国航空工业集团公司洛阳电光设备研究所 | 一种汽车双像源ar hud光机结构 |
JP7253717B2 (ja) | 2019-05-30 | 2023-04-07 | パナソニックIpマネジメント株式会社 | 投影装置及びヘッドアップディスプレイ |
CN111347982B (zh) * | 2020-03-25 | 2021-05-11 | 桂林电子科技大学 | 一种车载显示屏调节装置 |
CN113835283B (zh) * | 2020-06-08 | 2023-12-01 | 宁波舜宇车载光学技术有限公司 | 投影显示系统及其形成方法 |
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- 2015-12-09 US US15/534,240 patent/US10065572B2/en active Active
- 2015-12-09 EP EP15807663.8A patent/EP3230111B1/fr not_active Not-in-force
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Also Published As
Publication number | Publication date |
---|---|
JP2018514796A (ja) | 2018-06-07 |
FR3030065A1 (fr) | 2016-06-17 |
US20170343856A1 (en) | 2017-11-30 |
WO2016091931A1 (fr) | 2016-06-16 |
CN107466377A (zh) | 2017-12-12 |
US10065572B2 (en) | 2018-09-04 |
CN107107760A (zh) | 2017-08-29 |
EP3230111A1 (fr) | 2017-10-18 |
CN107107760B (zh) | 2020-04-03 |
EP3230111B1 (fr) | 2018-12-05 |
US20170341593A1 (en) | 2017-11-30 |
DE102014118380A1 (de) | 2016-06-16 |
FR3030065B1 (fr) | 2019-08-16 |
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