EP2690355A1 - Lamp - Google Patents
Lamp Download PDFInfo
- Publication number
- EP2690355A1 EP2690355A1 EP13167901.1A EP13167901A EP2690355A1 EP 2690355 A1 EP2690355 A1 EP 2690355A1 EP 13167901 A EP13167901 A EP 13167901A EP 2690355 A1 EP2690355 A1 EP 2690355A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- optical disk
- projections
- section
- cross
- prismatic
- 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- Withdrawn
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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
- F21V5/02—Refractors for light sources of prismatic shape
-
- 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
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/405—Lighting for industrial, commercial, recreational or military use for shop-windows or displays
-
- 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
- F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
- F21Y2103/10—Elongate light sources, e.g. fluorescent tubes comprising a linear array of point-like light-generating elements
-
- 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
- F21Y2105/00—Planar light sources
- F21Y2105/10—Planar light sources comprising a two-dimensional array of point-like light-generating elements
-
- 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]
Definitions
- the present invention relates to a luminaire having a light source and a transparent optical disk array disposed opposite to the light source for directing the light emitted from the light source, the optical disk array each having a main surface at its side facing the light source and at its opposite side and having prismatic structures on at least one of the major surfaces. Furthermore, the present invention relates to an optical disk assembly for such a luminaire.
- Goods presentation areas such as refrigerated counters, fruit pots, shelves, etc. are usually artificially illuminated.
- the aim is to illuminate the surfaces as evenly as possible, which is due to the usual elongated rectangular shape of the sales furniture partly only partially possible.
- the present invention has the object, a luminaire of the type mentioned in such a way that a Batwing light distribution curve can also be generated when using LEDs in a simple manner.
- a luminaire and an optical disk arrangement of the type mentioned above in that the optical disk arrangement at its one major surface a prismatic structure and with a plurality of mutually parallel projections which extend in a straight line substantially over the length of the plate and in particular, having an isosceles triangular cross section, and on the other major surface, a prism-like structure having a plurality of mutually parallel protrusions extending substantially the length of the major surface and forming a uniform undulating structure in cross-section; extending directions the projections on the opposite major surfaces of the plate assembly are offset by 90 ° to each other.
- the desired - in particular symmetrical - Batwing light distribution curve automatically adjusts when the light emitted by a light source passes through a plate arrangement according to the invention formed, which has on their main surfaces the proposed and offset by 90 ° to each other prism structures. This is especially true when LEDs or LED arrays are used as the light sources, which couple their light straight into the optical disk array.
- the prism-like structures on the two major surfaces are uniform, i. E. the respective projections and intermediate recesses extend in a straight line and continuously over the plate.
- the projections and intermediate recesses should form a regular contour in cross-section, in which the cross-section of adjacent projections and adjacent recesses is identical and does not change over the length of the projections and recesses.
- the cross-section of the projections of the prismatic structure on the one major surface of the optical disk assembly is in the form of right-angled, isosceles triangles. It is also advantageous if the projections of triangular cross-section directly adjoin one another without intermediate regions.
- the wave-like structure on the other major surface of the optical disc array is preferably formed by wave crests and wave troughs which are continuous with each other.
- the Wave crests and troughs formed by circular arc and in particular semi-circular sections.
- the plate assembly by a single transparent optical plate, in which case the prismatic or prism-like structures are provided on the opposite major surfaces of the optical disc.
- the optical disk arrangement can also be formed from two transparent optical disks lying one behind the other in the direction of emission, the main surfaces with the prismatic structures then being provided on the main surfaces of the two optical disks facing away from one another.
- the optical disk array is conveniently located in close proximity to the LEDs.
- a reflector may be provided, in which case an optical disk arrangement is positioned in the region of a light exit opening of the reflector.
- the luminaire comprises a main body 1, which carries on its upper side an LED module 2 and is provided along its periphery with a plurality of cooling fins 3 protruding outwards.
- the LED module 2 comprises, in a manner known per se, a substrate which is made of aluminum or another good heat-conducting material, and a plurality of LEDs, which are fastened to the substrate and arranged there in regular rows and columns.
- an optical disk 4 is provided, which consists of a transparent material.
- the optical disk 4 is provided with prismatic or prism-like structures both at its underside facing the LED module 2 and at its upper side.
- the prismatic structure on the top ie the upper main surface of the optical disk 4, formed by a plurality of projections 5 and intermediate recesses 6, which extend over the entire plate 4 in a straight line and parallel to each other are aligned.
- the protrusions 5 all have an identical cross-section in the shape of a right-angled, isosceles triangle, with the exception of the protrusion shown on the left-hand side, and immediately adjoin one another.
- the prism-like structure on the lower surface of the optical disk 4 is also formed by a plurality of projections 7 extending straight along the length of the disk 4 and extending parallel to each other with their extension direction offset by 90 ° from the extending direction the projections on the top of the plate runs.
- FIG. 7 can recognize, form the protrusions 7 and the intermediate recesses 8 on the underside of the plate a wave-like structure in which the wave crests and wave troughs merge into each other.
- the projections 7 and the recesses 8 are each formed identically, so that a uniform wave structure results, which is consistent over the length of the projections 7.
- the wave troughs or depressions 8 and the wave crests or projections 7 are formed by semicircles merging into one another.
- FIGS. 4 to 6 a second embodiment of a luminaire according to the invention is provided.
- This also includes a base body 1 with cooling fins 3 provided thereon, which carries an LED module 2 on its upper side.
- an optical disk 9 having on its upper side a prismatic structure having a plurality of mutually parallel projections 10 extending rectilinearly the length of the disk and a cross section in the form of right-angled, isosceles triangles own, has.
- This optical disk serves to light emitted from the LED module 2 to radiate uniformly in a reflector 11, which is provided at the top of the optical disk 9.
- an optical disk 4 is provided, which is formed in the same way as the optical disk 4 in the first embodiment and carries on its top and on its underside different prismatic structures. So much prism structure at the top of the plate 4 is formed by a plurality of projections 5 having a cross section in the shape of right-angled isosceles triangles and immediately adjoining each other. The projections 5 extend over the length of the plate 4 parallel to each other, wherein the cross section over the length of the projections 5 remains unchanged.
- the prism structure is formed by projections 7 and intermediate recesses 8 which form a corrugated structure as already discussed in detail in the first embodiment.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Leuchte, mit einer Lichtquelle und einer der Lichtquelle gegenüberliegend angeordneten transparenten optischen Plattenanordnung, um das von der Lichtquelle abgestrahlte Licht zu lenken, wobei die optische Plattenanordnung an ihrer zu der Lichtquelle weisenden Seite und an ihrer gegenüberliegenden Seite jeweils eine Hauptfläche besitzt und an zumindest einer der Hauptflächen prismatische Strukturen aufweist. Des Weiteren betrifft die vorliegende Erfindung eine optische Plattenanordnung für eine solche Leuchte.The present invention relates to a luminaire having a light source and a transparent optical disk array disposed opposite to the light source for directing the light emitted from the light source, the optical disk array each having a main surface at its side facing the light source and at its opposite side and having prismatic structures on at least one of the major surfaces. Furthermore, the present invention relates to an optical disk assembly for such a luminaire.
Warenpräsentationsflächen wie beispielsweise Kühltheken, Obstschütten, Verkaufsregale etc. werden in der Regel künstlich beleuchtet. Ziel ist es dabei, die Oberflächen möglichst gleichmäßig auszuleuchten, was aufgrund der üblichen langgezogenen Rechteckform der Verkaufsmöbel zum Teil nur bedingt möglich ist.Goods presentation areas such as refrigerated counters, fruit pots, shelves, etc. are usually artificially illuminated. The aim is to illuminate the surfaces as evenly as possible, which is due to the usual elongated rectangular shape of the sales furniture partly only partially possible.
In der
Zwischenzeitlich gehen die Bestrebungen im zunehmenden Maß dahin, konventionelle Lichtquellen durch LEDs zu ersetzen. Bei der Verwendung solcher LEDs ist der Einsatz der herkömmlichen Batwing-Reflektoren jedoch nicht ohne weiteres möglich, da bei diesen Reflektoren das Leuchtmittel in liegender Brennlage innerhalb des Reflektors angeordnet und gleichmäßig Licht in alle Richtungen abstrahlen muss, um die gewünschte Batwing-Lichtverteilungskurve zu erzeugen. Dies ist mit LEDs kaum möglich. Ein weiteres Problem besteht darin, dass LEDs als Punktlichtquellen Licht geradlinig abstrahlen, so dass eine hohe Blendwirkung auftreten kann. Aus diesem Grund wird in der
Vor diesem Hintergrund liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine Leuchte der eingangs genannten Art so auszugestalten, dass eine Batwing-Lichtverteilungskurve auch beim Einsatz von LEDs auf einfache Weise erzeugt werden kann.Against this background, the present invention has the object, a luminaire of the type mentioned in such a way that a Batwing light distribution curve can also be generated when using LEDs in a simple manner.
Diese Aufgabe ist be einer Leuchte sowie einer optischen Plattenanordnung der eingangs genannten Art dadurch gelöst, dass die optische Plattenanordnung an ihrer einen Hauptfläche eine prismatische Struktur und mit einer Vielzahl von parallel zueinander verlaufenden Vorsprüngen, die sich geradlinig im Wesentlichen über die Länge der Platte erstrecken und insbesondere einen Querschnitt in Form eines gleichschenkligen Dreiecks besitzen, und an der anderen Hauptfläche eine prismaähnliche Struktur mit einer Vielzahl von parallel zueinander verlaufenden Vorsprüngen, die sich im Wesentlichen über die Länge der Hauptfläche erstrecken und im Querschnitt eine gleichmäßige wellenartige Struktur bilden, aufweist, wobei die Erstreckungsrichtungen der Vorsprünge an den gegenüberliegenden Hauptflächen der Plattenanordnung um 90° zueinander versetzt sind.This object is achieved by a luminaire and an optical disk arrangement of the type mentioned above in that the optical disk arrangement at its one major surface a prismatic structure and with a plurality of mutually parallel projections which extend in a straight line substantially over the length of the plate and in particular, having an isosceles triangular cross section, and on the other major surface, a prism-like structure having a plurality of mutually parallel protrusions extending substantially the length of the major surface and forming a uniform undulating structure in cross-section; extending directions the projections on the opposite major surfaces of the plate assembly are offset by 90 ° to each other.
Es hat sich gezeigt, dass sich die gewünschte - insbesondere symmetrische - Batwing-Lichtverteilungskurve automatisch einstellt, wenn das von einer Lichtquelle abgestrahlte Licht durch eine erfindungsgemäß ausgebildete Plattenanordnung tritt, welche an ihren Hauptflächen die vorgeschlagenen und um 90° zueinander versetzten Prismenstrukturen besitzt. Dies gilt insbesondere, wenn als Lichtquellen LEDs oder LED-Arrays eingesetzt werden, die ihr Licht geradlinig in die optische Plattenanordnung einkoppeln.It has been shown that the desired - in particular symmetrical - Batwing light distribution curve automatically adjusts when the light emitted by a light source passes through a plate arrangement according to the invention formed, which has on their main surfaces the proposed and offset by 90 ° to each other prism structures. This is especially true when LEDs or LED arrays are used as the light sources, which couple their light straight into the optical disk array.
Wesentlich ist, dass die prismenartigen Strukturen an den beiden Hauptflächen gleichmäßig ausgebildet sind, d.h. die jeweiligen Vorsprünge und dazwischenliegenden Vertiefungen sich geradlinig und kontinuierlich über die Platte erstrecken. Dabei sollten die Vorsprünge und dazwischenliegenden Vertiefungen im Querschnitt eine regelmäßige Kontur bilden, bei welcher der Querschnitt benachbarter Vorsprünge und benachbarter Vertiefungen jeweils identisch ist und sich auch über die Länge der Vorsprünge und Vertiefungen nicht ändert.It is essential that the prism-like structures on the two major surfaces are uniform, i. E. the respective projections and intermediate recesses extend in a straight line and continuously over the plate. In this case, the projections and intermediate recesses should form a regular contour in cross-section, in which the cross-section of adjacent projections and adjacent recesses is identical and does not change over the length of the projections and recesses.
Gemäß einer Ausführungsform der Erfindung ist vorgesehen, dass der Querschnitt der Vorsprünge der prismatischen Struktur an der einen Hauptfläche der optischen Plattenanordnung die Form von rechtwinkligen, gleichschenkligen Dreiecken besitzt. Ebenso ist es vorteilhaft, wenn die Vorsprünge dreieckigen Querschnitts ohne Zwischenbereiche unmittelbar aneinander anschließen.According to an embodiment of the invention, it is provided that the cross-section of the projections of the prismatic structure on the one major surface of the optical disk assembly is in the form of right-angled, isosceles triangles. It is also advantageous if the projections of triangular cross-section directly adjoin one another without intermediate regions.
Die wellenartige Struktur an der anderen Hauptfläche der optischen Plattenanordnung wird vorzugsweise durch Wellenberge und Wellentäler gebildet, die sich stetig aneinander anschließen. In bevorzugter Weise werden die Wellenberge und Wellentäler durch kreisbogenförmige und insbesondere halbkreisförmige Abschnitte gebildet.The wave-like structure on the other major surface of the optical disc array is preferably formed by wave crests and wave troughs which are continuous with each other. Preferably, the Wave crests and troughs formed by circular arc and in particular semi-circular sections.
Grundsätzlich ist es möglich, die Plattenanordnung durch eine einzige transparente optische Platte auszubilden, wobei dann die prismatischen bzw. prismaähnlichen Strukturen an den gegenüberliegenden Hauptflächen der optischen Platte vorgesehen sind. Alternativ kann die optische Plattenanordnung auch aus zwei in Ausstrahlrichtung hintereinander liegende transparente optische Platten gebildet sein, wobei dann die Hauptflächen mit den prismatischen Strukturen an den voneinander weg weisenden Hauptflächen der beiden optischen Platten vorgesehen sind.In principle, it is possible to form the plate assembly by a single transparent optical plate, in which case the prismatic or prism-like structures are provided on the opposite major surfaces of the optical disc. Alternatively, the optical disk arrangement can also be formed from two transparent optical disks lying one behind the other in the direction of emission, the main surfaces with the prismatic structures then being provided on the main surfaces of the two optical disks facing away from one another.
Wenn die Lichtquelle durch mehrere LEDs gebildet wird, ist die optische Plattenanordnung zweckmäßigerweise in unmittelbarer Nähe vor den LEDs angeordnet. Alternativ oder zusätzlich kann ein Reflektor vorgesehen sein, wobei dann eine optische Plattenanordnung im Bereich einer Lichtaustrittsöffnung des Reflektors positioniert ist.When the light source is formed by a plurality of LEDs, the optical disk array is conveniently located in close proximity to the LEDs. Alternatively or additionally, a reflector may be provided, in which case an optical disk arrangement is positioned in the region of a light exit opening of the reflector.
Hinsichtlich weiterer vorteilhafter Ausgestaltungen der Erfindung wird auf die Unteransprüche sowie die nachfolgende Beschreibung eines Ausführungsbeispiels unter Bezugnahme auf die beiliegende Zeichnung verwiesen. In der Zeichnung zeigt
- Figur 1
- eine erste Ausführungsform einer erfindungsgemäßen Leuchte in perspektivischer Darstellung,
Figur 2- die Leuchte aus
Figur 1 in Vorderansicht, Figur 3- die Leuchte aus
Figur 1 in Seitenansicht, Figur 4- eine zweite Ausführungsform einer erfindungsgemäßen Leuchte in perspektivischer Darstellung,
Figur 5- die Leuchte aus
in Vorderansicht,Figur 4 - Figur 6
- die Leuchte aus
in Seitenansicht undFigur 4 Figur 7- eine schematische Darstellung einer optischen Platte für eine erfindungsgemäße Leuchte, bei welcher die obere Plattenhälfte und die untere Plattenhälfte um 90° zueinander versetzt dargestellt sind.
- FIG. 1
- a first embodiment of a lamp according to the invention in perspective view,
- FIG. 2
- the light off
FIG. 1 in front view, - FIG. 3
- the light off
FIG. 1 in side view, - FIG. 4
- a second embodiment of a lamp according to the invention in a perspective view,
- FIG. 5
- the light off
FIG. 4 in front view, - FIG. 6
- the light off
FIG. 4 in side view and - FIG. 7
- a schematic representation of an optical disk for a lamp according to the invention, in which the upper plate half and the lower plate half are shown offset by 90 ° to each other.
In den
An der Lichtaustrittsseite des LED-Moduls 2 ist eine optische Platte 4 vorgesehen, die aus einem transparenten Material besteht. Die optische Platte 4 ist sowohl an ihrer zu dem LED-Modul 2 weisenden Unterseite, als auch an ihrer Oberseite mit prismatischen bzw. prismaähnlichen Strukturen versehen.At the light exit side of the
Wie die
Die prismaähnliche Struktur an der Unterseite bzw. der unteren Hauptfläche der optischen Platte 4 wird ebenfalls durch eine Vielzahl von Vorsprüngen 7 gebildet, die sich geradlinig über die Länge der Platte 4 erstrecken und parallel zueinander verlaufen, wobei Ihre Erstreckungsrichtung um 90° versetzt zu der Erstreckungsrichtung der Vorsprünge an der Plattenoberseite verläuft. Wie insbesondere die
In den
An der Lichtaustrittsöffnung des Reflektors 11 wiederum ist eine optische Platte 4 vorgesehen, welche in gleicher Weise wie die optische Platte 4 bei der ersten Ausführungsform ausgebildet ist und an ihrer Oberseite und an ihrer Unterseite unterschiedliche Prismastrukturen trägt. So viel Prismastruktur an der Oberseite der Platte 4 wird durch eine Vielzahl von Vorsprüngen 5 gebildet, welche einen Querschnitt in der Form von rechtwinkligen, gleichschenkligen Dreiecken besitzen und unmittelbar aneinander anschließen. Die Vorsprünge 5 erstrecken sich über die Länge der Platte 4 parallel zueinander, wobei der Querschnitt über die Länge der Vorsprünge 5 unverändert bleibt.At the light exit opening of the reflector 11, in turn, an
An der Plattenunterseite wird die Prismenstruktur durch Vorsprünge 7 und dazwischen liegende Vertiefungen 8 gebildet, die eine Wellenstruktur bilden, wie sie anhand der ersten Ausführungsform bereits ausführlich erörtert wurde.At the bottom of the plate, the prism structure is formed by
Claims (15)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE202012102810U DE202012102810U1 (en) | 2012-07-26 | 2012-07-26 | lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2690355A1 true EP2690355A1 (en) | 2014-01-29 |
Family
ID=48444173
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13167901.1A Withdrawn EP2690355A1 (en) | 2012-07-26 | 2013-05-15 | Lamp |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP2690355A1 (en) |
DE (1) | DE202012102810U1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106500069A (en) * | 2015-09-06 | 2017-03-15 | 胡祖华 | LED lamp is heat radiator dedicated |
US10215350B2 (en) | 2014-05-22 | 2019-02-26 | Philips Lighting Holding B.V. | Luminaire, especially for road lighting |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2551954A (en) * | 1947-02-21 | 1951-05-08 | John L Lehman | Lighting device having a lens which gives a long and relatively narrow area of illumination |
EP1225390B1 (en) | 2001-01-19 | 2005-09-14 | BÄ*RO GmbH & Co. KG | Interior lamp, in particular for illuminating good displays |
US20080232093A1 (en) * | 2007-03-22 | 2008-09-25 | Led Folio Corporation | Seamless lighting assembly |
US20100246161A1 (en) * | 2007-02-02 | 2010-09-30 | Dai Nippon Printing Co., Ltd. | Optical sheet, surface light source device, and transmission display device |
US20110134648A1 (en) * | 2009-12-08 | 2011-06-09 | Industrial Technology Research Institute | Light uniformization structure and light emitting module |
US20110156584A1 (en) * | 2008-08-08 | 2011-06-30 | Solarkor Company Ltd. | Led lighting device |
DE102010014209A1 (en) | 2010-04-08 | 2011-10-13 | Siteco Beleuchtungstechnik Gmbh | Luminaire with optical plate |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69736578T2 (en) * | 1996-02-07 | 2007-08-30 | Nitto Jushi Kogyo K.K. | SURFACE LIGHT SOURCE, LIQUID CRYSTAL DISPLAY DEVICE AND ASYMMETRIC PRISM PLATE |
DE50106927D1 (en) * | 2000-03-03 | 2005-09-08 | Siteco Beleuchtungstech Gmbh | Hollow-light luminaire with lamp integrated in the cavity |
JP4035998B2 (en) * | 2002-01-23 | 2008-01-23 | オムロン株式会社 | Surface light source device, diffusion plate, and liquid crystal display device |
-
2012
- 2012-07-26 DE DE202012102810U patent/DE202012102810U1/en not_active Expired - Lifetime
-
2013
- 2013-05-15 EP EP13167901.1A patent/EP2690355A1/en not_active Withdrawn
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2551954A (en) * | 1947-02-21 | 1951-05-08 | John L Lehman | Lighting device having a lens which gives a long and relatively narrow area of illumination |
EP1225390B1 (en) | 2001-01-19 | 2005-09-14 | BÄ*RO GmbH & Co. KG | Interior lamp, in particular for illuminating good displays |
US20100246161A1 (en) * | 2007-02-02 | 2010-09-30 | Dai Nippon Printing Co., Ltd. | Optical sheet, surface light source device, and transmission display device |
US20080232093A1 (en) * | 2007-03-22 | 2008-09-25 | Led Folio Corporation | Seamless lighting assembly |
US20110156584A1 (en) * | 2008-08-08 | 2011-06-30 | Solarkor Company Ltd. | Led lighting device |
US20110134648A1 (en) * | 2009-12-08 | 2011-06-09 | Industrial Technology Research Institute | Light uniformization structure and light emitting module |
DE102010014209A1 (en) | 2010-04-08 | 2011-10-13 | Siteco Beleuchtungstechnik Gmbh | Luminaire with optical plate |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10215350B2 (en) | 2014-05-22 | 2019-02-26 | Philips Lighting Holding B.V. | Luminaire, especially for road lighting |
RU2689329C2 (en) * | 2014-05-22 | 2019-05-27 | Филипс Лайтинг Холдинг Б.В. | Lighting device, especially for road lighting |
CN106500069A (en) * | 2015-09-06 | 2017-03-15 | 胡祖华 | LED lamp is heat radiator dedicated |
Also Published As
Publication number | Publication date |
---|---|
DE202012102810U1 (en) | 2013-10-29 |
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