EP1696171A1 - Dispositif d'affichage à DEL - Google Patents

Dispositif d'affichage à DEL Download PDF

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Publication number
EP1696171A1
EP1696171A1 EP06003202A EP06003202A EP1696171A1 EP 1696171 A1 EP1696171 A1 EP 1696171A1 EP 06003202 A EP06003202 A EP 06003202A EP 06003202 A EP06003202 A EP 06003202A EP 1696171 A1 EP1696171 A1 EP 1696171A1
Authority
EP
European Patent Office
Prior art keywords
display device
lens array
led display
leds
lenses
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.)
Granted
Application number
EP06003202A
Other languages
German (de)
English (en)
Other versions
EP1696171B1 (fr
Inventor
Mario Wanninger
Matthias Hofer
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.)
Ams Osram International GmbH
Original Assignee
Osram Opto Semiconductors 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 Osram Opto Semiconductors GmbH filed Critical Osram Opto Semiconductors GmbH
Publication of EP1696171A1 publication Critical patent/EP1696171A1/fr
Application granted granted Critical
Publication of EP1696171B1 publication Critical patent/EP1696171B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/008—Combination of two or more successive refractors along an optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
    • G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
    • G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
    • G09F9/33—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements being semiconductor devices, e.g. diodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2111/00—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00
    • F21W2111/02—Use or application of lighting devices or systems for signalling, marking or indicating, not provided for in codes F21W2102/00 – F21W2107/00 for roads, paths or the like
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • G—PHYSICS
    • G08—SIGNALLING
    • G08G—TRAFFIC CONTROL SYSTEMS
    • G08G1/00—Traffic control systems for road vehicles
    • G08G1/09—Arrangements for giving variable traffic instructions
    • G08G1/095—Traffic lights

Definitions

  • the invention relates to an LED display device according to the preamble of patent claim 1.
  • LED arrays are characterized by a high luminance with comparatively low power consumption, a long service life, a fast response time and a comparatively low sensitivity to shocks and vibrations. For this reason, LED arrays are particularly suitable for reproducing static or moving images in large-format display devices, for example video displays, information panels for road traffic or variable message signs.
  • a light information system in which to reduce the phantom light a Arrangement of a plurality of fins is provided, wherein the lamellae extend substantially parallel to the beam direction of the radiation emitted by the light source.
  • the radiation should be made substantially forward and downward while light emitted upward is uselessly lost.
  • the invention has for its object to provide an improved LED display device, which is characterized in particular by an advantageous suppression of phantom light, an anisotropic emission characteristics and high mechanical stability.
  • An LED display device with a plurality of LEDs and a first lens array, which contains a plurality of lenses for collimating and / or focusing the radiation emitted by the LEDs comprises a second lens array of a plurality of lenses, which follows the first lens array in a radiation direction of the LEDs wherein a lens of the first lens array is associated with each lens of the second lens array, and wherein the lens of the first lens array each has an optical axis offset from an optical axis of the associated lens of the second lens array, and an aperture array interposed between the first lens array and the second lens array is arranged.
  • the inventive arrangement of the first lens array, the second lens array and the diaphragm arrangement advantageously both a suppression of phantom light and a beam shaping of the useful radiation emitted by the plurality of LEDs is achieved.
  • the display device includes, for example, a matrix-like arrangement of LEDs. Each LED represents a pixel of the display device.
  • the LEDs may comprise one or more radiation-emitting semiconductor chips.
  • the LED display device may be a full-color display, in which the LEDs comprise, for example, at least one semiconductor chip emitting in the red, one in the green and one in the blue spectral region.
  • the LEDs of the display device may also each containing one or more monochrome light or white light emitting semiconductor chips.
  • the LED display device is advantageously composed of a multiplicity of individual modules, each module comprising a certain number of LEDs.
  • a single module may comprise a matrix array of 8 x 8 LEDs.
  • the modular design of the LED display device assembly and service are advantageously simplified.
  • a defect within a single module can be remedied by replacing the respective module.
  • each LED of the display device is assigned in each case a lens of the first lens array and a lens of the second lens array.
  • the number of lenses of the first lens array and the second lens array in this case is equal to the number of pixels of the LED display device, respectively.
  • the second lens array is a transparent cover of the display device.
  • the lenses of the second lens array thus advantageously constitute an outer cover facing the viewer of the display device.
  • the lenses of the second lens array are preferably curved on the side facing away from the LEDs. This is particularly advantageous when the second lens array is a transparent outer cover of the LED display device. Due to the curvature of the outwardly facing surfaces of the lenses of the second lens array is a specular reflection of interfering extraneous light, the otherwise especially with a planar windshield can be pronounced, effectively reduced.
  • the lenses of the second lens array are particularly preferably designed in such a way that ambient light impinging on the display device from the outside, such as sunlight, for example, is deflected substantially onto light-absorbing regions of the diaphragm arrangement. In this way, a reduction in contrast of the display or even a glare of a viewer by reflected extraneous light is advantageously reduced.
  • the diaphragm arrangement is preferably aligned perpendicular to a main radiation direction of the LEDs.
  • the diaphragm arrangement is a structured disk.
  • the diaphragm arrangement has a planar structure and can be positioned between the lens arrays with comparatively little production effort.
  • the first lens array and the second lens array may each be spaced from the aperture array by a honeycomb spacer.
  • the LEDs are advantageously spaced from the first lens array by a honeycomb spacer.
  • the honeycomb spacers are advantageously made of a blackened plastic.
  • the diaphragm arrangement is advantageously formed from a blackened plastic.
  • the use of plastic is particularly advantageous for large-area displays, since in this way the weight of the display device can be reduced.
  • metal parts can alternatively be used, which are preferably blackened to improve the absorption of extraneous light.
  • the diaphragm arrangement may be a structured thin metal sheet.
  • the first lens array and the second lens array are advantageously made of a plastic.
  • the lens arrays can be produced with a comparatively low production outlay by means of an injection molding process. In addition to the relatively low production cost, this has the advantage that the weight of the LED display device is reduced compared to the use of glass lens arrays.
  • the LED display device preferably has a main emission direction that is not parallel to a main emission direction of the individual LEDs.
  • the emission characteristic of the LED display device is thus not symmetrical with respect to the main emission direction of the LEDs.
  • Such an asymmetrical emission characteristic is particularly advantageous for change traffic displays.
  • radiation into the traffic space is usually required downwards or forwards, since upwardly emitted radiation could not be perceived by a road user who views the display.
  • the efficiency of the light emission is advantageously improved.
  • the asymmetrical emission characteristic is advantageously achieved in that the optical axis of a lens of the first lens array in each case with respect to the optical axis of associated lens of the second lens array is arranged offset in the direction of the main emission of the LED display device.
  • the optical axes of the lenses of the second lens array are offset downwardly relative to the optical axes of the lenses of the first lens array from the position of a viewer of the display device.
  • the radiation collimated and / or focused by the lenses of the first lens array strikes the lenses of the second lens array in this embodiment at least predominantly above the optical axis of the lenses of the second lens array.
  • the lenses of the second lens array are preferably converging lenses that deflect light incident outside the optical axis toward the optical axis.
  • the LEDs of the display device are preferably surface mount LEDs.
  • the LEDs can be mounted on a mounting surface, for example a PCB (Printed Circuit Board), in an automated process.
  • the assembly cost is advantageously low compared to wired LEDs, which are usually mounted manually.
  • the distance between adjacent LEDs is preferably 12 mm or less, for example 10 mm to 12 mm. As a result, a comparatively high image resolution is achieved for large-area display devices, in particular traffic signal systems.
  • the lenses of the first lens array advantageously have a TIR (Total Internal Reflection) structure on an LED-facing side.
  • TIR Total Internal Reflection
  • Such TIR lenses are known for example from WO00 / 24062 and are therefore not explained in detail at this point.
  • the lenses of the second lens array are advantageously aspherically curved.
  • the lenses of the second lens array may have an elliptical shape.
  • the LED display device comprises LEDs arranged on a carrier body, the first lens array, the second lens array, the diaphragm arrangement, honeycomb spacers between the LEDs and the first lens array and between the diaphragm arrangement and the lens arrays, as well as further housing parts, for example metal sheets and seals.
  • the LED display device is advantageously constructed substantially in a mechanical sandwich construction, i. the aforementioned components are layered on top of each other. The assembly and adjustment effort is advantageously low. With this design, a corresponding rigidity and resistance to temperature and wind pressure is further achieved, so that the LED display device is particularly suitable for use in outdoor areas, such as for change traffic announcements.
  • the LED display device shown in Figure 1 includes a plurality of LEDs 2, which are mounted on a common carrier 1, for example, a PCB (Printed Circuit Board).
  • the LEDs 2 are preferably surface mount LEDs and each form one pixel of the LED display device. To simplify the illustration, only three pixels of the LED display device are shown in FIG. Of course, further pixels can connect in a vertical direction parallel to the drawing plane of FIG. 1 as well as in a horizontal direction perpendicular to the drawing plane of FIG.
  • the LEDs 2 each contain one or more radiation-emitting semiconductor chips (not shown). For example, each LED 2 contains three radiation-emitting semiconductor chips which emit light in the three primary colors red, green and blue.
  • the radiation emitted by the LEDs 2 is focused by a first lens array 3 containing a plurality of TIR lenses 4.
  • the LED display device has a second lens array 5, which contains a plurality of lenses 6 and follows the first lens array 3 in a main beam direction 7 of the LEDs 2.
  • the optical axes 8 of the lenses 4 of the first lens array 3 are parallel to the main beam direction 7 of the LEDs 2.
  • the optical axes 9 of the lenses 6 of the second lens array 5 are offset from the optical axes 8 of the lenses 4 of the first lens array 3.
  • the light emitted in the main beam direction 7 of the LEDs 2 therefore strikes a large part beyond the optical axis 9 on the lenses 6 of the second lens array 5. This causes the light emitted by the LEDs 2 radiation 10 from the lenses 6 of the second lens array 5 in one Main beam direction 11 is deflected, which is not parallel to the main beam direction 7 of the LEDs 2.
  • the optical axes 9 of the lenses 6 are advantageously offset from the optical axes 8 of the lenses 4 in a direction from which the LED display device is preferably viewed.
  • the optical axes 9 of the lenses 6 of the second LED array 5 are opposite to the optical axis 8 of the lenses 4 of the first LED array 3 in FIG offset vertically downwards.
  • the aperture assembly 12 is preferably in the form of a disk containing absorbent regions 13 and apertures 14 disposed therebetween. Instead of openings 14, alternatively, transparent regions may also be provided, in particular of a transparent plastic.
  • the absorbent areas 13 of the panel assembly 12 are preferably formed of a black plastic or metal.
  • External light 15 incident from outside on the LED display device is advantageously deflected by the lenses 6 of the second lens array 5 onto the absorbing regions 13 of the diaphragm arrangement 12. In this way it is achieved that the contrast of the LED display device is not reduced by reflected toward a viewer extraneous light (phantom light).
  • the suppression of the phantom light is further improved in the LED display device in that the second lens array 5 constitutes an outer cover of the LED display device in which the occurrence of specular reflections by the convexly outwardly curved lenses 6 is reduced.
  • the lenses 6 advantageously have an aspherical curvature, in particular an elliptical curvature.
  • a spacer 16, 17, 18 is advantageously provided between the carrier 1 and the first lens array 3, between the first lens array 3 and the diaphragm assembly 12, as well as between the diaphragm assembly 12 and the second lens array 5, a spacer 16, 17, 18 is advantageously provided.
  • the spacers 16, 17, 18 are structured, for example, in honeycomb or matrix form, wherein each honeycomb or matrix cell comprises one pixel of the LED display device. Of course, this structure does not necessarily have to be hexagonal honeycomb.
  • the spacers 16, 17, 18 and the lens arrays 3, 5 are preferably each plastic parts produced by injection molding. Furthermore, the diaphragm arrangement 12 may be a plastic disc produced by injection molding.
  • the distance between adjacent LEDs 2 of the LED display device is preferably 12 mm or less. In this way, a comparatively high image resolution is achieved for large-area display devices.
  • the manufacturing cost is comparatively low in the LED display device according to the invention by the comparatively simple mechanical construction, in which the spacers 16, 17, 18, the lens arrays 3, 5 and the diaphragm assembly 12 are stacked on top of each other, comparatively low. It is particularly advantageous that the optical relevant parts, in particular the lens arrays 3, 5 and the diaphragm assembly 12 are each formed as arrays, so that a complex assembly of the LED display device with individual optical components that would have to be adjusted individually to each other is not required.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Led Device Packages (AREA)
  • Control Of El Displays (AREA)
EP06003202A 2005-02-28 2006-02-16 Dispositif d'affichage à DEL Not-in-force EP1696171B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005009058 2005-02-28

Publications (2)

Publication Number Publication Date
EP1696171A1 true EP1696171A1 (fr) 2006-08-30
EP1696171B1 EP1696171B1 (fr) 2010-09-15

Family

ID=36498885

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06003202A Not-in-force EP1696171B1 (fr) 2005-02-28 2006-02-16 Dispositif d'affichage à DEL

Country Status (3)

Country Link
EP (1) EP1696171B1 (fr)
AT (1) ATE481600T1 (fr)
DE (1) DE502006007871D1 (fr)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102339A1 (fr) * 2007-02-20 2008-08-28 Camtek Ltd. Eclairage par led pour une caméra de balayage en ligne
DE102007040573A1 (de) * 2007-08-28 2009-03-05 Christian Bartenbach Beleuchtungsvorrichtung
EP2184530A2 (fr) * 2008-11-10 2010-05-12 Hyundai Telecommunication Co., Ltd. Dispositif d'éclairage DEL
CN101182904B (zh) * 2007-11-30 2010-06-09 中国计量学院 一种以大功率led为光源的交通信号灯
EP2226780A1 (fr) * 2009-03-02 2010-09-08 Textmate Limited Affichage électronique d'autoroute
WO2011031170A1 (fr) * 2009-09-09 2011-03-17 Instytut Optyki Stosowanej Système optique à ensemble de distribution de lumière
WO2011117217A1 (fr) * 2010-03-24 2011-09-29 Siemens Aktiengesellschaft Élément d'affichage optique ainsi que dispositif d'affichage
WO2010150149A3 (fr) * 2009-06-25 2011-12-01 Koninklijke Philips Electronics N.V. Système d'éclairage multifaisceau, et procédé d'éclairage
CN102770896A (zh) * 2010-02-24 2012-11-07 西门子公司 符号显示器
EP2860719A1 (fr) * 2013-10-10 2015-04-15 Ortana Elektronik Yazilim Taah. San. ve Tic. A.S. Fourniture d'informations à l'aide d'un élément optique
CN105605484A (zh) * 2016-01-29 2016-05-25 欧普照明股份有限公司 背光灯
WO2021083800A1 (fr) * 2019-10-28 2021-05-06 Signify Holding B.V. Dispositif d'éclairage permettant de produire un aspect scintillant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905439A2 (fr) * 1997-09-24 1999-03-31 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Indicateur optique de signaux à sources lumineuses multiples
EP0930600A1 (fr) * 1998-01-19 1999-07-21 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Elément optique ayant DEL et deux lentilles pour la génération des points de lumière pour panneaux de signalisation et d'affichage
DE10022712A1 (de) * 1999-12-07 2001-06-21 Osram Opto Semiconductors Gmbh Signalgebereinsatz für Verkehrssignale
WO2002082398A2 (fr) * 2001-01-09 2002-10-17 Gelcore Llc Feu de circulation a del, fantome solaire
EP1541920A1 (fr) * 2003-12-10 2005-06-15 Sagem SA Feu de signalisation à diodes electroluminescentes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0905439A2 (fr) * 1997-09-24 1999-03-31 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Indicateur optique de signaux à sources lumineuses multiples
EP0930600A1 (fr) * 1998-01-19 1999-07-21 SWARCO FUTURIT Verkehrssignalsysteme Ges.m.b.H. Elément optique ayant DEL et deux lentilles pour la génération des points de lumière pour panneaux de signalisation et d'affichage
DE10022712A1 (de) * 1999-12-07 2001-06-21 Osram Opto Semiconductors Gmbh Signalgebereinsatz für Verkehrssignale
WO2002082398A2 (fr) * 2001-01-09 2002-10-17 Gelcore Llc Feu de circulation a del, fantome solaire
EP1541920A1 (fr) * 2003-12-10 2005-06-15 Sagem SA Feu de signalisation à diodes electroluminescentes

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008102339A1 (fr) * 2007-02-20 2008-08-28 Camtek Ltd. Eclairage par led pour une caméra de balayage en ligne
CN101675330B (zh) * 2007-02-20 2013-01-02 卡姆特有限公司 用于线扫描相机的led照明
DE102007040573A1 (de) * 2007-08-28 2009-03-05 Christian Bartenbach Beleuchtungsvorrichtung
CN101182904B (zh) * 2007-11-30 2010-06-09 中国计量学院 一种以大功率led为光源的交通信号灯
EP2184530A3 (fr) * 2008-11-10 2012-04-25 Hyundai Telecommunication Co., Ltd. Dispositif d'éclairage DEL
EP2184530A2 (fr) * 2008-11-10 2010-05-12 Hyundai Telecommunication Co., Ltd. Dispositif d'éclairage DEL
EP2226780A1 (fr) * 2009-03-02 2010-09-08 Textmate Limited Affichage électronique d'autoroute
CN102668696B (zh) * 2009-06-25 2016-01-20 皇家飞利浦电子股份有限公司 多光束照射系统和照射方法
WO2010150149A3 (fr) * 2009-06-25 2011-12-01 Koninklijke Philips Electronics N.V. Système d'éclairage multifaisceau, et procédé d'éclairage
CN102668696A (zh) * 2009-06-25 2012-09-12 皇家飞利浦电子股份有限公司 多光束照射系统和照射方法
US8783904B2 (en) 2009-06-25 2014-07-22 Koninklijke Philips N.V. Multi-beam illumination system and method of illumination
WO2011031170A1 (fr) * 2009-09-09 2011-03-17 Instytut Optyki Stosowanej Système optique à ensemble de distribution de lumière
CN102770896A (zh) * 2010-02-24 2012-11-07 西门子公司 符号显示器
CN102770896B (zh) * 2010-02-24 2015-11-25 西门子公司 符号显示器
US9171488B2 (en) 2010-03-24 2015-10-27 Siemens Aktiengesellschaft Optical display element and display device
RU2546486C2 (ru) * 2010-03-24 2015-04-10 Сименс Акциенгезелльшафт Оптический элемент отображения, а также устройство отображения
WO2011117217A1 (fr) * 2010-03-24 2011-09-29 Siemens Aktiengesellschaft Élément d'affichage optique ainsi que dispositif d'affichage
CN102812507A (zh) * 2010-03-24 2012-12-05 西门子公司 光学指示部件和指示设备
CN102812507B (zh) * 2010-03-24 2016-04-13 西门子公司 光学指示部件和指示设备
EP2860719A1 (fr) * 2013-10-10 2015-04-15 Ortana Elektronik Yazilim Taah. San. ve Tic. A.S. Fourniture d'informations à l'aide d'un élément optique
US9443452B2 (en) 2013-10-10 2016-09-13 Ortana Elektronik Yazilim Taah. San. ve Tic. A.S. Providing information using an optical element
EP3267427A1 (fr) * 2013-10-10 2018-01-10 Ortana Elektronik Yazilim Taah. San. ve Tic. A.S. Élément optique pour un système d'informations permettant d'afficher des informations
CN105605484A (zh) * 2016-01-29 2016-05-25 欧普照明股份有限公司 背光灯
CN105605484B (zh) * 2016-01-29 2024-02-23 欧普照明股份有限公司 背光灯
WO2021083800A1 (fr) * 2019-10-28 2021-05-06 Signify Holding B.V. Dispositif d'éclairage permettant de produire un aspect scintillant
CN114585856A (zh) * 2019-10-28 2022-06-03 昕诺飞控股有限公司 用于提供闪光外观的照明设备
US11821608B2 (en) 2019-10-28 2023-11-21 Signify Holding B.V. Lighting device having light-transmissive cover layer between a lens array and a light source array

Also Published As

Publication number Publication date
ATE481600T1 (de) 2010-10-15
DE502006007871D1 (de) 2010-10-28
EP1696171B1 (fr) 2010-09-15

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