EP2513691A1 - Panneau a diodes electroluminescentes - Google Patents
Panneau a diodes electroluminescentesInfo
- Publication number
- EP2513691A1 EP2513691A1 EP10805807A EP10805807A EP2513691A1 EP 2513691 A1 EP2513691 A1 EP 2513691A1 EP 10805807 A EP10805807 A EP 10805807A EP 10805807 A EP10805807 A EP 10805807A EP 2513691 A1 EP2513691 A1 EP 2513691A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- panel
- face
- diffusion means
- diodes
- 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
Links
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/02—Diffusing elements; Afocal elements
- G02B5/0205—Diffusing elements; Afocal elements characterised by the diffusing properties
- G02B5/021—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures
- G02B5/0226—Diffusing elements; Afocal elements characterised by the diffusing properties the diffusion taking place at the element's surface, e.g. by means of surface roughening or microprismatic structures having particles on the surface
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0051—Diffusing sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/005—Means for improving the coupling-out of light from the light guide provided by one optical element, or plurality thereof, placed on the light output side of the light guide
- G02B6/0055—Reflecting element, sheet or layer
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0081—Mechanical or electrical aspects of the light guide and light source in the lighting device peculiar to the adaptation to planar light guides, e.g. concerning packaging
- G02B6/0095—Light guides as housings, housing portions, shelves, doors, tiles, windows, or the like
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0041—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided in the bulk of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0033—Means for improving the coupling-out of light from the light guide
- G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/004—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles
- G02B6/0043—Scattering dots or dot-like elements, e.g. microbeads, scattering particles, nanoparticles provided on the surface of the light guide
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0068—Arrangements of plural sources, e.g. multi-colour light sources
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
- G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
- G02B6/0066—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form characterised by the light source being coupled to the light guide
- G02B6/0073—Light emitting diode [LED]
Definitions
- the invention relates to the field of light panels, in particular light-emitting diode panels.
- LEDs Light-emitting diodes
- LEDs are their long service life, luminous efficiency, robustness and compactness, making equipment more durable and requiring less maintenance. Recently their use has developed especially in the interior design.
- the document FR2891608 proposes for example a luminous facade of furniture or wall covering or credence comprising a panel receiving at the periphery a frame profile incorporating diodes arranged for an injection of light by the edge.
- the panel diffuses the light received transversely for uniform illumination.
- Such a panel is inefficient.
- the light is evenly diffused into the space, making the light aggressive for someone who is facing it, when it is used as a lighting fixture with high light intensity.
- the invention aims to provide a more efficient light panel and providing better visual comfort, for lighting the interior. It is simple and compatible with industrial requirements (ease and speed of production, reliability, ).
- the invention can also make it possible to widen the range of applications of the luminous panels.
- the invention proposes a light panel, especially for the arrangement (interior or even exterior, domestic or professional), and / or for commercial equipment, comprising:
- a transparent, flat, mineral glass sheet having a first main face, said front face, and a second main face, said rear face, and a wafer, a plurality of electroluminescent diodes each emitting light (monochromatic or polychromatic) with a given emission spectrum in the given visible, arranged facing the wafer or in a hole bordering one of the main faces, for propagation light in the thickness of the sheet, the sheet then acting as a light guide,
- - Guided light diffusion means for an extraction of said light via (through or through) the front face, which are surface diffusion means preferably occupying the majority of the first face; or volume diffusion means whose projected surface on the front face preferably occupies the majority of the front face,
- a specular reflector facing the diffusion means and on the rear face, and with a specular reflection coefficient at least equal to 80%, preferably greater than or equal to 90%, and even more preferably greater than or equal to 95% for the set of wavelengths of said emission spectrum of the diodes in the visible.
- the use of the specular reflector ensures greater luminous efficiency. Indeed, thanks to its high reflection coefficient, all light is returned to the first side, thus reducing the loss (light leakage) of the rear face.
- the specular reflector according to the invention on the rear face with the diffusion means sufficiently wide and facing the reflector, an extraction of the light is obtained which is preferably in the direction of propagation of the guided rays.
- the normal luminance (perpendicular to the front face of the panel) may be less than 2000 cd / m 2 , or even less than or equal to 1000 cd / m 2 , or better still less than or equal to 500 cd / m 2 , in a luminous area functional (visible) reference, for example in the center of the panel, or in all visible light areas, visible panel according to the invention.
- the reference zone is not the "hot spots" area, which is the well-known alternation of dark and bright areas in the immediate vicinity of the LEDs. It is arranged to hide this area of hot spots for example by an opaque strip (layer, adhesive tape, piece ...) on the front face, for example of rectangular shape.
- an opaque strip layer, adhesive tape, piece Certainly it is a metal strip that can be part of a profile, including aluminum, surrounding and / or supporting diodes.
- the width of the strip can be for example at least 10 mm.
- the luminance can be measured by means of a luminance meter (for example the LS-100 model from Konica-Minolta).
- a luminance meter for example the LS-100 model from Konica-Minolta.
- the total power and the density of the diodes are chosen according to the applications.
- the luminance in the oblique direction equal to 45 ° relative to the normal to the sheet, measured in a visible, so-called reference, functional zone, for example in the center of the panel, is at least five times, or at least ten times higher than the normal luminance measured at said center of the panel.
- This high ratio is found in any visible functional light zone, with an intensity that varies according to the distance to the diodes.
- the luminance at 30 °, or even 45 °, preferably ranging from 30 ° to 45 ° or even 60 °, relative to the normal to the sheet, measured in a visible, visible optical reference zone, by example in the center of the panel, is at least equal to 1500 Cd / m 2 or even at least 2000 Cd / m 2 .
- the oblique light intensity is much greater than that perpendicular to the sheet, giving a new optical functionality.
- the light panel according to the invention emits softer light and more relaxing for the eyes of a person who looks at it in front.
- the greater light intensity at the oblique is a true inclined lighting. This is particularly interesting for lighting a horizontal worktop attached to or near the panel.
- the specular reflector may be an element attached to the rear face, but is preferably a layer, especially a metallic reflective layer, which layer may be deposited by any conventional technique (physical vapor deposition "PVD”, chemical vapor deposition “CVD “, liquid channel, etc.), in particular silvering with an overcoat of protection against oxidation.
- PVD physical vapor deposition
- CVD chemical vapor deposition
- liquid channel etc.
- the specular reflector must necessarily be at least facing the diffusion means. For simplicity of manufacture, it covers (almost) completely the back side.
- the diffusion means may be on one or more diffusing zones of distinct or identical extent, be arranged in patterns, geometric or otherwise, especially in bands of widths and / or equal or distinct lengths, distributed randomly or ( pseudo) periodically.
- the dark zone or zones are preferably reduced as much as possible.
- the surface diffusion means in one or more zones cover at least 80%, even 90% and even 100% of the front face, or the projected area of the volume diffusion means on the front face occupies at least less than 80% or even 90% of the front panel.
- the surface diffusion means are formed by at least one of the following means: a treatment of the first face of the sandblasting type, acid etching, enamel or diffusing paste deposit, or the volume diffusion means are formed by laser engraving in the glass sheet.
- Laser etching in the thickness of the glass may thus be preferred as diffusion means, in planes extending parallel to the main faces of the glass sheet. Indeed this type of treatment is in the mass, it is not sensitive to soiling, and the glass is easy to clean.
- the panel is monolithic, it comprises a single sheet of glass preferably of thickness less than or equal to 8 mm or even less than or equal to 6 mm.
- the panel can be laminated (rear face forming lamination face) or be part of a double glazing. It can also provide flipping or double glazing with two monolithic panels according to the invention (by the rear faces), preferably identical, to form a double illuminating panel.
- the glass has the lowest possible absorption level including a clear glass or extra-clear.
- Reference WO04 / 025334 can be referred to for the composition of an extra-clear glass.
- a silico-soda-lime glass with less than 0.05% Fe III or Fe 2 O 3 .
- You can choose for example SAINT-GOBAIN GLASS DIAMANT ® , SAINT-GOBAIN GLASS glass or DIAMANT SOLAR ® , PILKINGTON Optiwhite glass, SCHOTT B270 glass.
- LEDs can be simple chips or with low volume encapsulation. It is not necessary to use lenses. For more compactness, when LEDs are next to the slice, there is no constraint on the minimum distance between the LEDs and the slice.
- the LEDs may be conventional, ie with a normal emitter face to the carrier substrate, or else to a side emitter face; said face being preferably opposite the wafer.
- the diodes can emit any type of light: monochromatic, polychromatic, especially white, and it can provide an electronic control to vary the intensity and / or color in time (depending on the time of day, season, etc.).
- the panel is for example used (substantially) vertically (or more widely inclined, following a support wall ...), forming itself a wall (partition, partition panel etc.) or reported (glued, fixed by any known means) to a partition, a wall wall.
- the panel according to the invention can be arranged in particular above a worktop (substantially) horizontal: desk, kitchen plan, laboratory, preferably with diodes with an emitting face facing the highest edge - in the case of a rectangular or square sheet, (slice or face) longitudinal or side edge (slice or face), depending on the installation-
- the panel according to the invention can be used in particular in interior design:
- the panel according to the invention can also be used in exterior design: wall cladding, reading areas, works, events ...
- the panel can also be used horizontally for example, as a display shelf, jewelry showcase or other store, especially commercial refrigerator shelf.
- the light panel according to the invention makes it possible to better highlight the objects presented (accent lighting).
- the panel can also be used horizontally, especially as floor tile, podium, exhibition space ....
- FIG. 1 represents a schematic longitudinal sectional view of the light panel of the invention
- FIG. 2 is a schematic longitudinal sectional view of the panel according to the invention in a vertical position and above a work plane
- FIG. 3 is a curve of the luminance as a function of the angle of observation
- FIG. 4 is a curve showing the relationship between the oblique luminance and the normal luminance as a function of the angle of observation
- FIG. 5 shows a first curve of the illumination as a function of the distance to the working plane illustrated in FIG. 2, for a glass extra-clear, and a second curve of the illumination as a function of the distance to the working plane illustrated in FIG. 2 for a clear glass
- FIGS. 6 and 7 show photos of the light panels according to the invention in a vertical position and in front of a worktop, one with a fully acidic front face, the other with a front face with acidic rectangular strips.
- the light panel 100 of the invention illustrated in FIGS. 1 and 2 comprises a transparent sheet 1 made of mineral glass, and light-emitting diodes 2.
- the arrangement of the diodes 2 at the edge of the glass sheet produces light rays introduced via the edge of the glass sheet, as schematically represented by the arrows in FIG.
- the transparent glass sheet 1 consists for example of a glass clear words, such as glass PLANILUX ® marketed by the company SAINT-Gobain Glass, or preferably an extra-clear glass or said DIAMOND DIAMOND ® SOLAR ® marketed by the company SAINT-GOBAIN GLASS.
- a glass clear words such as glass PLANILUX ® marketed by the company SAINT-Gobain Glass, or preferably an extra-clear glass or said DIAMOND DIAMOND ® SOLAR ® marketed by the company SAINT-GOBAIN GLASS.
- the transparent glass sheet 10 is for example rectangular, it has two opposite main faces, a front face 11 and a rear face 12.
- the rear face 12 is provided with a specular reflector with a specular reflection coefficient of at least 80% or even 90% or 95% for all the wavelengths of the emission spectrum of the diodes in the visible.
- the front face 11 is entirely provided with diffusion means 3 for extracting the light towards the outside of the glass sheet in which the light emitted by the LEDs is guided.
- the light panel 100 thus produced has a relatively thin thickness slightly different from the corresponding glass sheet, for example of the order of 6 mm, or even 4 mm, to facilitate the arrangement of the light panel in its destination final.
- the alternative light panel can be laminated.
- One can even leaf through two identical monolithic light panels by their rear face.
- the front face 11 comprises the diffusion means 3 (FIG. 1) which can be at the surface, arranged on the external side of the sheet in contact with the external environment, or in volume, in the thickness of the glass.
- These surface means are for example obtained by a surface treatment of sand-blasting type glass, acid etching, enamel or diffusing paste deposit, etc.
- These volume means are for example obtained by laser etching.
- diffusion means 3 are preferably arranged in an extended manner, thus occupying the majority of the front face (or of the projected surface), or even the entire front face.
- the combination of illumination by diodes positioned on the wafer, extended diffusion means and the specular reflector, provides a very bright lighting without dazzling.
- an SGG Diamant ® extra-clear glass of the company SAINT-GOBAIN GLASS of dimension 447 mm ⁇ 147 mm and thickness 6 mm,
- silver plating such as SGG Miralite ® product of the company Saint-Gobain Glass,
- LEDs emitting in white, with a color temperature of 6500K, emitting a total flux of about 330 lumen for a power consumption of 4.2 Watt, placed to have a transmitting face opposite the wafer a longitudinal edge.
- FIG. 3 is a curve of the luminance as a function of the angle of observation, measured in the middle of such a panel 100.
- the 0 ° angle represents the normal direction of the panel surface.
- the negative angle is on the side closest to the LEDs
- the normal luminance is of the order of 200 cd / m 2 .
- the luminance from 30 ° exceeds 1500 cd / m 2 and even reaches more than 2500 cd / m 2 .
- FIG. 4 is a graph showing the relationship between the oblique luminance and the normal luminance as a function of the angle of observation measured, in a visible light zone, in the middle of said panel.
- This ratio exceeds 3 from 30 ° and goes even beyond 10 to 60 °.
- the panel is placed in a vertical position and is located at a height of
- FIG. 5 shows a first curve 10 of the illumination E as a function of the distance D to the working plane, for the extra-clear glass (SGG Diamant® glass from SAINT-GO BAI GLASS), and a second curve ( 20) of the illumination E as a function of the distance D to the worktop for a clear glass (SGG Planilux® glass from SAINT-GOBAIN GLASS), in a variant of the product.
- This measurement is performed in a conventional manner using a meter such as a model of the T-10 series of the Konica-Minolta brand positioned on the horizontal work plane.
- the illumination on the work surface is greater than 200 lux (Ix), or even 300 lux in a most used work area between 100 and 300 mm.
- FIG. 6 shows a photo of a vertical light panel 100 according to the invention in front of a (laboratory) worktop 120 with a fully acidified front face 11.
- the panel of FIG. 6 comprises an aluminum profile 130 making it possible at one and the same time to mask the zone of injection of the diodes (hot spots along the upper longitudinal edge) and to fix the panel 100 to the wall along the long longitudinal edges. .
- FIG. 7 shows a photo of a vertical light panel 100 according to the invention in front of a work surface 120 (of laboratory) with a front face 11 with acidic rectangular strips 3, parallel to the longitudinal edges and of different widths.
- An opaque adhesive tape 140 masks the injection zone of the diodes (arranged on the upper longitudinal edge).
- the one or more diffusion zones can be configured in various ways, the embodiments described above are given here by way of non-limiting example.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Planar Illumination Modules (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0959066A FR2953904B1 (fr) | 2009-12-16 | 2009-12-16 | Panneau a diodes electroluminescentes |
PCT/FR2010/052724 WO2011080454A1 (fr) | 2009-12-16 | 2010-12-14 | Panneau a diodes electroluminescentes |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2513691A1 true EP2513691A1 (fr) | 2012-10-24 |
Family
ID=42358081
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10805807A Ceased EP2513691A1 (fr) | 2009-12-16 | 2010-12-14 | Panneau a diodes electroluminescentes |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2513691A1 (fr) |
CN (1) | CN102713701B (fr) |
FR (1) | FR2953904B1 (fr) |
WO (1) | WO2011080454A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP3825605B1 (fr) * | 2014-05-15 | 2023-06-07 | Rohinni, Inc. | Diffusion de lumière au moyen de sources lumineuses |
DE202015008962U1 (de) | 2015-04-24 | 2016-04-28 | Schott Ag | Glas- oder Glaskeramikartikel |
CN108459414B (zh) * | 2017-02-17 | 2021-08-27 | 矽创电子股份有限公司 | 具投射定位的光学成像装置 |
CN115366783A (zh) * | 2021-10-29 | 2022-11-22 | 法国圣戈班玻璃公司 | 光导面板组件、发光玻璃系统和车辆 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1346672A1 (fr) * | 2002-03-20 | 2003-09-24 | Dominic Wirtz | Dispositif pour éclairer d'objets et d'intérieurs |
US20040031234A1 (en) * | 2000-12-22 | 2004-02-19 | Thomas Emde | Window element |
WO2009045750A1 (fr) * | 2007-09-30 | 2009-04-09 | 3M Innovative Properties Company | Stratifié de guide de lumière pour réduire la perte de réflecteur |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2844364B1 (fr) | 2002-09-11 | 2004-12-17 | Saint Gobain | Substrat diffusant |
FR2891608A1 (fr) | 2005-10-03 | 2007-04-06 | Salm Sa Sa | Facade lumineuse de meuble ou d'habillage de mur ou de credence |
FR2905479B1 (fr) * | 2006-08-31 | 2008-10-31 | Saint Gobain | Systeme optique pour dispositif d'eclairage, dispositif d'eclairage et procede de pilotage du dispositif |
TW200815853A (en) * | 2006-09-25 | 2008-04-01 | Jeng Shiang Prec Ind Co Ltd | High efficient backlight module |
WO2008080253A1 (fr) * | 2006-12-28 | 2008-07-10 | He Shan Lide Electronic Enterprise Company Ltd | Procédé de fabrication d'un dispositif d'éclairage à del |
KR100985358B1 (ko) * | 2007-12-10 | 2010-10-04 | 히다치 가세고교 가부시끼가이샤 | 백라이트부 |
CN201293239Y (zh) * | 2008-11-04 | 2009-08-19 | 潘定国 | 用单侧等截面三角形定向棱镜反光片和灯条制成的定向壁灯 |
-
2009
- 2009-12-16 FR FR0959066A patent/FR2953904B1/fr not_active Expired - Fee Related
-
2010
- 2010-12-14 CN CN201080061664.9A patent/CN102713701B/zh not_active Expired - Fee Related
- 2010-12-14 EP EP10805807A patent/EP2513691A1/fr not_active Ceased
- 2010-12-14 WO PCT/FR2010/052724 patent/WO2011080454A1/fr active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040031234A1 (en) * | 2000-12-22 | 2004-02-19 | Thomas Emde | Window element |
EP1346672A1 (fr) * | 2002-03-20 | 2003-09-24 | Dominic Wirtz | Dispositif pour éclairer d'objets et d'intérieurs |
WO2009045750A1 (fr) * | 2007-09-30 | 2009-04-09 | 3M Innovative Properties Company | Stratifié de guide de lumière pour réduire la perte de réflecteur |
Non-Patent Citations (1)
Title |
---|
See also references of WO2011080454A1 * |
Also Published As
Publication number | Publication date |
---|---|
CN102713701A (zh) | 2012-10-03 |
CN102713701B (zh) | 2017-03-29 |
FR2953904A1 (fr) | 2011-06-17 |
FR2953904B1 (fr) | 2012-01-13 |
WO2011080454A1 (fr) | 2011-07-07 |
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