EP3221738A1 - Système de projection pour afficheur, notamment tête haute, et afficheur associé - Google Patents
Système de projection pour afficheur, notamment tête haute, et afficheur associéInfo
- Publication number
- EP3221738A1 EP3221738A1 EP15817942.4A EP15817942A EP3221738A1 EP 3221738 A1 EP3221738 A1 EP 3221738A1 EP 15817942 A EP15817942 A EP 15817942A EP 3221738 A1 EP3221738 A1 EP 3221738A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- projection system
- screen
- filter
- display
- 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- Withdrawn
Links
Classifications
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133528—Polarisers
- G02F1/133536—Reflective polarizers
-
- 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
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133603—Direct backlight with LEDs
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133605—Direct backlight including specially adapted reflectors
-
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
-
- 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
- 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
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/1336—Illuminating devices
- G02F1/133602—Direct backlight
- G02F1/133606—Direct backlight including a specially adapted diffusing, scattering or light controlling members
- G02F1/133607—Direct backlight including a specially adapted diffusing, scattering or light controlling members the light controlling member including light directing or refracting elements, e.g. prisms or lenses
Definitions
- the invention relates to projection systems, especially for head-up displays.
- the invention relates to a projection system and a head-up display for a motor vehicle.
- This type of head-up display for a motor vehicle requires obtaining an image with a sufficient brightness so that the user, and in particular the driver of the vehicle, can sufficiently see the image, and in any situation, according to the weather conditions and / or time.
- the backlighting device 14 comprises in particular at least one light source.
- the light source is composed of at least one and preferably a set of light-emitting diodes 16, here two in number, also called LEDs or LEDs (for Light Emitting Diodes in English, and used in the following description), placed on a support plate.
- the support plate consists of a printed circuit 18, also called PCB (for Printed Circuit Board in English).
- the printed circuit used may for example be type F 4 (for Flame Resistant 4 in English) or IMS (for Insulated Metal Substrate in English).
- 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 screen 12, are:
- the reflecting means 26, the optical system and the housing 28 make it possible, owing to the reflection of the light on or through their respective surfaces, to modify the characteristics of the recycled light, in particular its polarization and its direction of propagation.
- the recycled light which is reflected by the reflective means 26 and which propagates towards the screen 12 has a different polarization and an angle of incidence with the recycling filter or filters different, and therefore can cross the one or more recycling filters 24 if these characteristics allow the passage of light through the recycling filter or filters 24. If the light still does not have the characteristics necessary for crossing the recycling filter or filters, the light is recycled again and the cycle described above is repeated.
- FIG. 2 schematically shows a more detailed view of the backlight device according to one embodiment of the invention.
- the backlighting device comprises the LEDs 16, a first lens array 38 and for example a second lens array 40.
- the lighting device comprises two LEDs 16, and each lens array comprises two lenses 38a, 38b, 40a, 40b, each of the lenses being disposed above an LED 16.
- the light emitted by the LEDs passes through successively the two networks 38, 40 of lenses and allow, as visible in the figure, to collimate the luminous rays 42 by successive recovery of these luminous rays 42 through the lenses of the lens arrays.
- the reflective means 26 are arranged, in this embodiment, on the face of the lenses 38a, 38b located on the side of the LEDs 16, and on the surface of the support means 44. To maximize the reflection of the light recycled to the screen, the largest possible surface area of the lenses 38a, 38b and lens support means 44 is covered by the reflective means 26. As shown in FIG. 2, the reflecting means 26 cover the entire surface of the first lens array 38 situated on the side of the LEDs 16, with the exception of a hole 46a, 46b on each lens 38a, 38b allowing the light coming from the LED located in front of the lens to cross the lens 38a, 38b. The size of this hole 46a, 46b depends on the distance between the LEDs 16 and the first lens array 38 and the angular aperture of the illumination of the LEDs 16.
- the projection system 10 described with reference to FIG. 1 forms an image using the TFT-LCD screen 12.
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Liquid Crystal (AREA)
- Projection Apparatus (AREA)
- Instrument Panels (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1402638A FR3028963B1 (fr) | 2014-11-21 | 2014-11-21 | Systeme de protection pour afficheur, notamment tete haute, et afficheur associe |
PCT/FR2015/053164 WO2016079457A1 (fr) | 2014-11-21 | 2015-11-20 | Système de projection pour afficheur, notamment tête haute, et afficheur associé |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3221738A1 true EP3221738A1 (fr) | 2017-09-27 |
Family
ID=52339206
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP15817942.4A Withdrawn EP3221738A1 (fr) | 2014-11-21 | 2015-11-20 | Système de projection pour afficheur, notamment tête haute, et afficheur associé |
Country Status (6)
Country | Link |
---|---|
US (1) | US10295825B2 (fr) |
EP (1) | EP3221738A1 (fr) |
JP (1) | JP2018502759A (fr) |
CN (1) | CN107257940B (fr) |
FR (1) | FR3028963B1 (fr) |
WO (1) | WO2016079457A1 (fr) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR3054328B1 (fr) * | 2016-07-22 | 2019-08-16 | Valeo Comfort And Driving Assistance | Dispositif de generation d'image et afficheur tete haute |
CN113434051B (zh) * | 2017-12-13 | 2024-01-19 | 上海耕岩智能科技有限公司 | 一种生理特征侦测识别方法和光侦测装置 |
FR3078570B1 (fr) * | 2017-12-20 | 2020-06-19 | Valeo Comfort And Driving Assistance | Dispositif d'affichage tete haute |
CN108594433A (zh) * | 2018-04-02 | 2018-09-28 | 东莞广辰光电科技有限公司 | 一种使用偏极光转换器的高效率抬头显示器照明系统 |
DE102018207516B3 (de) * | 2018-05-15 | 2019-11-14 | Continental Automotive Gmbh | Head-Up-Display mit einer von mehreren verteilt angeordneten Lichtquellen beleuchteten Anzeige |
EP3575846A1 (fr) * | 2018-05-30 | 2019-12-04 | Visteon Global Technologies Inc. | Unité de génération d'image pour affichage tête haute |
FR3082630B1 (fr) * | 2018-06-13 | 2020-07-10 | Valeo Comfort And Driving Assistance | Appareil de projection destine a un systeme d'affichage tete haute pour conducteur de vehicule automobile et systeme correspondant |
FR3093195B1 (fr) * | 2019-02-21 | 2021-01-29 | Valeo Comfort & Driving Assistance | dispositif d’affichage avec protection contre une surchauffe de l'écran, et afficheur tête haute comprenant un tel dispositif |
CN113109940A (zh) * | 2020-01-10 | 2021-07-13 | 未来(北京)黑科技有限公司 | 一种高亮度的抬头显示系统 |
DE102020103967A1 (de) * | 2020-02-14 | 2021-08-19 | Bayerische Motoren Werke Aktiengesellschaft | Blickfeldanzeigevorrichtung mit einem hellen energieeffizienten Backlight für ein Fahrzeug |
JP2021139956A (ja) * | 2020-03-02 | 2021-09-16 | 株式会社デンソー | 虚像表示装置 |
JP7479999B2 (ja) * | 2020-09-09 | 2024-05-09 | 株式会社小糸製作所 | 画像投影装置 |
JP2023155051A (ja) * | 2022-04-08 | 2023-10-20 | 船井電機株式会社 | バックライト装置および表示装置 |
CN115097672A (zh) * | 2022-07-25 | 2022-09-23 | 业成科技(成都)有限公司 | 背光模组、图像生成单元、抬头显示器及车辆 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10245933B4 (de) * | 2002-09-30 | 2013-10-10 | Osram Opto Semiconductors Gmbh | Einrichtung zur Erzeugung eines gebündelten Lichtstroms |
US7997771B2 (en) * | 2004-06-01 | 2011-08-16 | 3M Innovative Properties Company | LED array systems |
US7619825B1 (en) * | 2004-09-27 | 2009-11-17 | Rockwell Collins, Inc. | Compact head up display with wide viewing angle |
KR101197046B1 (ko) * | 2005-01-26 | 2012-11-06 | 삼성디스플레이 주식회사 | 발광다이오드를 사용하는 2차원 광원 및 이를 이용한 액정표시 장치 |
US20080019114A1 (en) * | 2006-07-19 | 2008-01-24 | Gert Stuyven | Light source having enhanced mixing |
JP4479805B2 (ja) * | 2008-02-15 | 2010-06-09 | ソニー株式会社 | レンズ、光源ユニット、バックライト装置及び表示装置 |
JP5674032B2 (ja) * | 2011-03-25 | 2015-02-18 | 日本精機株式会社 | ヘッドアップディスプレイ装置 |
US20120293979A1 (en) * | 2011-05-16 | 2012-11-22 | Shenzhen China Star Optoelectronics Technology Co. Ltd. | Backlight module and display apparatus |
JP2015510607A (ja) * | 2012-01-09 | 2015-04-09 | ウェヴィエン, インコーポレイテッド.Wavien, Inc. | 超高輝度バックライトlcdビデオディスプレイ |
KR102081724B1 (ko) * | 2013-03-21 | 2020-02-26 | 삼성전자주식회사 | 디스플레이 장치의 백라이트 유닛 |
KR20150111021A (ko) * | 2014-03-24 | 2015-10-05 | 삼성디스플레이 주식회사 | 광원 모듈, 이를 포함하는 백라이트 어셈블리 및 표시 장치 |
-
2014
- 2014-11-21 FR FR1402638A patent/FR3028963B1/fr active Active
-
2015
- 2015-11-20 JP JP2017527266A patent/JP2018502759A/ja active Pending
- 2015-11-20 WO PCT/FR2015/053164 patent/WO2016079457A1/fr active Application Filing
- 2015-11-20 EP EP15817942.4A patent/EP3221738A1/fr not_active Withdrawn
- 2015-11-20 CN CN201580063265.9A patent/CN107257940B/zh active Active
- 2015-11-20 US US15/526,017 patent/US10295825B2/en active Active
Non-Patent Citations (2)
Title |
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None * |
See also references of WO2016079457A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR3028963A1 (fr) | 2016-05-27 |
JP2018502759A (ja) | 2018-02-01 |
FR3028963B1 (fr) | 2016-12-23 |
WO2016079457A1 (fr) | 2016-05-26 |
CN107257940A (zh) | 2017-10-17 |
US10295825B2 (en) | 2019-05-21 |
CN107257940B (zh) | 2021-06-01 |
US20170322415A1 (en) | 2017-11-09 |
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