DE19860696B4 - Light source element with lateral oblique Lichteinkopplung - Google Patents
Light source element with lateral oblique Lichteinkopplung Download PDFInfo
- Publication number
- DE19860696B4 DE19860696B4 DE1998160696 DE19860696A DE19860696B4 DE 19860696 B4 DE19860696 B4 DE 19860696B4 DE 1998160696 DE1998160696 DE 1998160696 DE 19860696 A DE19860696 A DE 19860696A DE 19860696 B4 DE19860696 B4 DE 19860696B4
- Authority
- DE
- Germany
- Prior art keywords
- light source
- light
- source element
- optical waveguide
- exit surface
- 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.)
- Expired - Lifetime
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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
- G02B6/0013—Means for improving the coupling-in of light from the light source into the light guide
- G02B6/0015—Means for improving the coupling-in of light from the light source into the light guide provided on the surface of the light guide or in the bulk of it
- G02B6/0018—Redirecting means 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
-
- 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
- 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
- G09F9/35—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 liquid crystals
-
- 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
-
- 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
- G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
- G02B6/0061—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to provide homogeneous light output intensity
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/2804—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers
- G02B6/2852—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals forming multipart couplers without wavelength selective elements, e.g. "T" couplers, star couplers using tapping light guides arranged sidewardly, e.g. in a non-parallel relationship with respect to the bus light guides (light extraction or launching through cladding, with or without surface discontinuities, bent structures)
-
- 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
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
-
- 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
- G02F1/133615—Edge-illuminating devices, i.e. illuminating from the side
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
Abstract
Lichtquellenelement (10, 20, 30 40) mit einem Lichtwellenleiter (1, 21, 31), der eine Lichtaustrittsfläche (1A, 21A, 31A), eine der Lichtaustrittsfläche (1A) gegenüberliegende Oberfläche (1B, 21B, 31B) und die Lichtaustrittsfläche (1A, 21A, 31A) und die gegenüberliegende Oberfläche (1B, 21B, 31B) verbindende Längsseitenflächen (1C, 1D) aufweist, wobei die der Lichtaustrittsfläche (1A) gegenüberliegende Oberfläche (1B, 21B, 31B) und die Längsseitenflächen (1C, 1D) jeweils mit Licht reflektierenden oder diffus zurückwerfenden Reflektoren (4, 24, 34) bedeckt sind, dadurch gekennzeichnet, daß an den Längsseitenflächen (1C, 1D) des Lichtwellenleiters (1, 21, 31) mindestens eine Lichteinkopplungseinheit (5, 25, 35, 45) angeordnet ist, welche einen Öffnungsbereich (5B, 25B, 35B) des jeweiligen Reflektors (4, 24, 34) und eine vor dem Öffnungsbereich (5B) angeordnete Lichtquelle (5A, 25A, 35A) derart aufweist, daß die im Betrieb von der Lichtquelle (5A) emittierte Lichtstrahlung mit einem schiefen Winkel in den Lichtwellenleiter (1, 21, 31) eindringt.Light source element (10, 20, 30 40) with an optical waveguide (1, 21, 31) having a light exit surface (1A, 21A, 31A), one of the light exit surface (1A) opposite surface (1B, 21B, 31B) and the light exit surface ( 1A, 21A, 31A) and the longitudinal surfaces (1C, 1D) connecting the opposite surface (1B, 21B, 31B), the surface (1B, 21B, 31B) facing the light exit surface (1A) and the longitudinal side surfaces (1C, 1D) each with light reflecting or diffusely reflecting reflectors (4, 24, 34) are covered, characterized in that at the longitudinal side surfaces (1C, 1D) of the optical waveguide (1, 21, 31) at least one light coupling unit (5, 25, 35, 45 ), which has an opening region (5B, 25B, 35B) of the respective reflector (4, 24, 34) and a light source (5A, 25A, 35A) arranged in front of the opening region (5B), such that, in operation, the light source Light source (5A) emitted Lichtstra penetrates at an oblique angle in the optical waveguide (1, 21, 31).
Description
Die Erfindung bezieht sich auf ein Lichtquellenelement gemäß dem Oberbegriff des Patentanspruchs 1 zur Hinterleuchtung von Flüssigkristall-Displays und zur ambienten Beleuchtung oder Umgebungsbeleuchtung.The The invention relates to a light source element according to the preamble of the patent claim 1 for the backlighting of liquid crystal displays and to ambient lighting or ambient lighting.
Bei der Hinterleuchtung von Flüssigkristall-Displays besteht eine wichtige Aufgabe darin, die Flüssigkristall-Anzeigefläche mit einer möglichst homogenen monochromen oder polychromen Lichtstrahlung ausreichend hoher Leuchtdichte auszuleuchten. Dazu muß die aus einer oder mehreren Lichtquellen emittierte Lichtstrahlung einerseits möglichst homogen auf die Anzeigefläche verteilt werden, wobei andererseits die Verluste möglichst minimiert werden sollten.at the backlighting of liquid crystal displays is an important task in the liquid crystal display area with one possible homogeneous monochrome or polychromatic light radiation sufficient to illuminate high luminance. This must be from one or more light sources emitted light radiation on the one hand as homogeneously distributed on the display surface On the other hand, the losses should be minimized as possible.
In
der
In
der
In
der
Bei der beschriebenen Anordnung muß die Lichtstrahlung an einer Stirnseite des Lichtquellenelements in den Lichtwellenleiter eingekoppelt werden. Bei Verwendung beispielsweise einer längs dieser Seite angeordneten Leuchtstoffröhre, die von einem metallischen Reflektor umgeben ist, läßt sich sicher in vielen Fällen eine ausreichende Leuchtdichte für die Hinterleuchtung eines Flüssigkristall-Display bereitstellen. Dennoch ist diese Anordnung relativ unflexibel, da aufgrund der Beschränkung hinsichtlich der verwendbaren Lichtquelle die Leuchtdichte nicht über ein bestimmtes Maß hinaus gesteigert werden kann. Außerdem ist die Anbringung der Lichtquelle an die seitliche Stirnfläche des Lichtquellenelements auch aus Platzgründen ungünstig, weil der hierfür benötigte Platz letztlich die Breite der Anzeigefläche des Flüssigkristall-Displays beschränkt.at the arrangement described, the light radiation on an end face of the light source element in the optical waveguide be coupled. For example, when using one along this Side arranged fluorescent tube, which is surrounded by a metallic reflector, can be certainly in many cases a sufficient luminance for provide the backlighting of a liquid crystal display. Nevertheless, this arrangement is relatively inflexible, because of the restriction with regard to the usable light source, the luminance is not over certain extent can be increased. Furthermore is the attachment of the light source to the lateral end face of Light source element also unfavorable for reasons of space, because of the space required for this purpose ultimately limits the width of the display area of the liquid crystal display.
Der vorliegenden Erfindung liegt somit die Aufgabe zugrunde, ein Lichtquellenelement, insbesondere zur Hinterleuchtung von Flüssigkristall-Displays, zu schaffen, mit welchem einerseits eine Erhöhung der Leuchtdichte ermöglicht werden kann und bei welchem andererseits die Anbringung der Lichtquellen nicht mit einer Einschränkung in der Breite der Lichtemissionsfläche des Lichtquellenelements verbunden ist.Of the The present invention is therefore based on the object, a light source element, especially for the backlighting of liquid crystal displays, to provide with which on the one hand an increase the luminance allows can be and on the other hand, the attachment of the light sources not with a limitation in the width of the light emitting surface of the light source element is.
Weiterhin ist es auch bei den im Stand der Technik bekannten Lichtquellenelementen, die die Funktion der ambienten Beleuchtung oder Umgebungsbeleuchtung haben, aufgrund der Art der Einkopplung der Lichtstrahlung an den Stirnseiten des Lichtwellenleiters ein Problem, die Leuchtdichte zu steigern. Somit ist es eine weitere Aufgabe der vorliegenden Erfindung, ein Lichtquellenelement zur Umgebungsbeleuchtung zu schaffen, welches eine höhere Leuchtdichte und/oder eine größere Lichtaustrittsfläche aufweist.Furthermore, it is also in the known in the art light source elements that have the function of ambient lighting or ambient lighting, due to the nature of the coupling of the light radiation at the end faces of the optical waveguide, a problem to increase the luminance. Thus, it is a further object of the present invention to provide a light source element for ambient lighting which has a higher luminance and / or a larger light output having footing.
Die oben geschilderten Probleme des Standes der Technik werden mit einem Lichtquellenelement gemäß Patentanspruch 1 gelöst.The The above-described problems of the prior art are with a Light source element according to claim 1 solved.
Allen Ausführungsformen der vorliegenden Erfindung ist gemeinsam, daß die Lichtstrahlung nicht mehr wie beim Stand der Technik an einer oder beiden Stirnflächen in den Lichtwellenleiter eingekoppelt wird, sondern an Oberflächen, die in Längsrichtung des Lichtquellenelements verlaufen, wobei die Lichtstrahlung mit einem schiefen Winkel in den Lichtwellenleiter eingekoppelt wird. Da entlang dieser Oberflächen mehr Platz für die Positionierung der Lichtquellen vorhanden ist, kann eine Mehrzahl von Lichtquellen vorgesehen werden. Dadurch wird die Möglichkeit geschaffen, daß die Leuchtdichte eines erfindungsgemäßen Lichtquellenelements gesteigert werden kann.all embodiments The present invention has in common that the light radiation is not more like in the prior art on one or both faces in the optical waveguide is coupled, but to surfaces that longitudinal of the light source element, wherein the light radiation with is coupled at an oblique angle in the optical waveguide. Because along these surfaces more space for the positioning of the light sources is present, a plurality be provided by light sources. This will be the possibility created that the Luminance of a light source element according to the invention can be increased.
Der Lichtwellenleiter ist in allen Ausführungsformen zumindest an der der Lichtaustrittsfläche gegenüberliegenden Oberfläche und an den die Lichtaustrittsfläche und die gegenüberliegende Oberfläche verbindenden Längsseitenflächen mit einem Reflektor bedeckt, in den gegebenenfalls Öffnungsbereiche zur Anordnung von Lichteinkopplungseinheiten geformt sind.Of the Optical waveguide is in all embodiments at least at the the light exit surface opposite surface and to the light exit surface and the opposite surface connecting longitudinal side surfaces with a reflector covered in the optionally opening areas for arrangement are formed by light coupling units.
Bei einer ersten Ausführungsform eines erfindungsgemäßen Lichtquellenelements werden die Lichtquellen an den Längsseitenflächen des Lichtwellenleiters angeordnet. An den Längsseitenflächen kann eine Mehrzahl von Lichtquellen wie Lichtemissionsdioden oder dergleichen angeordnet werden und damit die Leuchtdichte des Lichtquellenelements gesteigert werden.at a first embodiment a light source element according to the invention the light sources on the longitudinal side surfaces of the Optical waveguide arranged. On the longitudinal side surfaces, a plurality of Light sources such as light emitting diodes or the like arranged and thus increase the luminance of the light source element become.
Bei einer zweiten Ausführungsform eines erfindungsgemäßen Lichtquellenelements, die vorliegend jedoch nicht beansprucht ist, werden die Lichtquellen an der der Lichtaustrittsseite gegenüberliegenden Oberfläche des Lichtquellenelements angeordnet. Eine solche Ausführungsform dient z. B. als Lichtquellenelement für die Umgebungsbeleuchtung.at a second embodiment a light source element according to the invention, however, which is not claimed herein, the light sources on the surface opposite the light exit side of the Light source element arranged. Such an embodiment serves z. B. as a light source element for the ambient lighting.
Die erfindungsgemäßen Lichtquellenelemente können z. B. flächig ausgebildet werden und somit in idealer Weise zur Hinterleuchtung von Flüssigkristall-Displays eingesetzt werden.The light source elements according to the invention can z. B. area be formed and thus ideally for backlighting of liquid crystal displays be used.
Weiterhin können die erfindungsgemäßen Lichtquellenelemente zur ambienten Beleuchtung oder Umgebungsbeleuchtung verwendet werden. Durch die Möglichkeit der Vielfacheinleuchtung wird die Dämpfung des Lichtwellenleiters praktisch ausgeschaltet, so daß Lichtwellenleiter beliebiger Länge ausgeleuchtet und für die Beleuchtung der Umgebung verwendet werden können.Farther can the light source elements according to the invention used for ambient lighting or ambient lighting. By the possibility The multiple illumination is the attenuation of the optical fiber practically turned off, so that optical fiber illuminated of any length and for the lighting of the environment can be used.
Die Erfindung wird im Folgenden anhand von Ausführungsbeispielen in den Zeichnungen näher beschrieben. In den Zeichnungen zeigen:The Invention will be described below with reference to embodiments in the drawings described in more detail. In the drawings show:
In
der
Das
Kernstück
des Lichtquellenelements
Die
Lichteinkopplung erfolgt über
Lichteinkopplungseinheiten
Die
Das
Ausführungsbeispiel
der
In
dem Ausführungsbeispiel
der
Die
Reflektoren
Die
Homogenisierung der Leuchtdichte wird im Prinzip ebenso wie bei
der
In
der
In
der
In
der
Wie
im ersten Ausführungsbeispiel
sind die der Lichtaustrittsfläche
Auch bei dieser Ausführungsform können zur Homogenisierung der Lichtstrahlung lichtstreuende und ebene Flächen in einem variablen Verhältnis auf der Lichtaustrittsfläche vorgesehen sein, wie dies im Zusammenhang mit der ersten Ausführungsform beschrieben wurde. Die Lichtquellen können LEDs oder polychrome Weißlichtquellen sein.Also in this embodiment can scatter to homogenize the light radiation de and flat surfaces may be provided in a variable ratio on the light-emitting surface, as described in connection with the first embodiment. The light sources may be LEDs or polychrome white light sources.
Das
in
Ein
weiteres Ausführungsbeispiel
ist in
In
Als
besonders vorteilhaft hat es sich erwiesen, wenn der Reflektor
Auch bei dieser Art von Lichtquellenelementen spielt die Lichtdämpfung praktisch keine Rolle mehr und es können Lichtquellenelemente beliebiger Form und Länge geformt werden.Also In this type of light source elements, the light attenuation plays practically no longer matter and it can Be formed light source elements of any shape and length.
In
- 11
- Lichtwellenleiteroptical fiber
- 1A1A
- LichtaustrittsflächeLight-emitting surface
- 1B1B
- Oberflächesurface
- 1C1C
- LängsseitenflächeLongitudinal side face
- 1D1D
- LängsseitenflächeLongitudinal side face
- 1E1E
- Stirnflächeface
- 1F1F
- Stirnflächeface
- 44
- Reflektorreflector
- 55
- LichteinkoppeleinheitLichteinkoppeleinheit
- 5A5A
- Lichtquellelight source
- 5B5B
- Öffnungsbereichopening area
- 1010
- LichtquellenelementLight source element
- 2020
- LichtquellenelementLight source element
- 2121
- Lichtwellenleiteroptical fiber
- 2424
- Reflektorreflector
- 2525
- LichteinkoppeleinheitLichteinkoppeleinheit
- 25A25A
- Lichtquellelight source
- 25B25B
- Öffnungsbereichopening area
- 3030
- Lichtwellenleiteroptical fiber
- 3434
- Reflektorreflector
- 3535
- LichteinkoppeleinheitLichteinkoppeleinheit
- 35A35A
- Lichtquellelight source
- 35B35B
- Öffnungsbereichopening area
- 4040
- LichtquellenelementLight source element
- 4545
- LichteinkoppeleinheitLichteinkoppeleinheit
Claims (12)
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998160696 DE19860696B4 (en) | 1998-12-29 | 1998-12-29 | Light source element with lateral oblique Lichteinkopplung |
AT99966896T ATE340967T1 (en) | 1998-12-29 | 1999-12-29 | LIGHT SOURCE ELEMENT WITH SIDED OBLIQUE LIGHT COUPLING |
TW088123204A TW454100B (en) | 1998-12-29 | 1999-12-29 | Light-source element with inclined light-coupling in side |
PCT/DE1999/004125 WO2000039501A1 (en) | 1998-12-29 | 1999-12-29 | Light source element with lateral, angular light injection |
EP99966896A EP1141623B1 (en) | 1998-12-29 | 1999-12-29 | Light source element with lateral, angular light injection |
CN99815213A CN1120327C (en) | 1998-12-29 | 1999-12-29 | Light source element with lateral, angular light injection |
KR10-2001-7008367A KR100402718B1 (en) | 1998-12-29 | 1999-12-29 | Light source element with lateral, angular light injection |
US09/868,364 US7688400B1 (en) | 1998-12-29 | 1999-12-29 | Light source element with lateral, angular light injection |
DE59913882T DE59913882D1 (en) | 1998-12-29 | 1999-12-29 | LIGHT SOURCE ELEMENT WITH LATERAL SLIP LIGHT MOUNTING |
JP2000591363A JP2002533892A (en) | 1998-12-29 | 1999-12-29 | Light source element having an oblique light input coupling portion on the side |
US11/748,058 US7688401B2 (en) | 1998-12-29 | 2007-05-14 | Light source element with lateral, oblique light infeed |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1998160696 DE19860696B4 (en) | 1998-12-29 | 1998-12-29 | Light source element with lateral oblique Lichteinkopplung |
Publications (2)
Publication Number | Publication Date |
---|---|
DE19860696A1 DE19860696A1 (en) | 2000-07-06 |
DE19860696B4 true DE19860696B4 (en) | 2009-07-02 |
Family
ID=7893104
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE1998160696 Expired - Lifetime DE19860696B4 (en) | 1998-12-29 | 1998-12-29 | Light source element with lateral oblique Lichteinkopplung |
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DE (1) | DE19860696B4 (en) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10314525A1 (en) * | 2003-03-31 | 2004-11-04 | Osram Opto Semiconductors Gmbh | Method of manufacturing a lighting device and lighting device |
DE102005006635A1 (en) | 2005-01-31 | 2006-08-10 | Osram Opto Semiconductors Gmbh | Optical element and method for its production |
WO2008032275A1 (en) * | 2006-09-15 | 2008-03-20 | Koninklijke Philips Electronics N.V. | Flat and thin led-based luminary |
WO2008102297A1 (en) * | 2007-02-21 | 2008-08-28 | Koninklijke Philips Electronics N.V. | Lighting system with improved rigidity |
DE102007015299A1 (en) | 2007-03-27 | 2008-10-09 | Vossloh-Schwabe Optoelectronic Gmbh & Co. Kg | Lighting arrangement for colored illumination of surface arranged at distance, has light conductor and two sources of light coupled to monochrome light into light conductor |
DE202010001155U1 (en) * | 2010-01-20 | 2010-04-22 | Zumtobel Lighting Gmbh | Light guide plate with phosphorus-containing structural elements |
WO2012168839A1 (en) * | 2011-06-09 | 2012-12-13 | Koninklijke Philips Electronics N.V. | Lighting strip |
US9157582B2 (en) | 2011-06-09 | 2015-10-13 | Koninklijke Philips N.V. | Lighting strip |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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EP0500960A1 (en) * | 1990-09-12 | 1992-09-02 | Mitsubishi Rayon Co., Ltd. | Element of plane source of light |
DE4404425A1 (en) * | 1994-02-11 | 1995-08-17 | Rudolf Goeckel | Illumination system for diffuse illumination of transparent surfaces or bodies |
DE19652829A1 (en) * | 1996-04-19 | 1997-10-23 | Bosch Siemens Hausgeraete | Electrical appliance such as kettle - has indicator including optical conductor surrounding housing to project light from light emitters all around housing circumference |
-
1998
- 1998-12-29 DE DE1998160696 patent/DE19860696B4/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0500960A1 (en) * | 1990-09-12 | 1992-09-02 | Mitsubishi Rayon Co., Ltd. | Element of plane source of light |
DE4404425A1 (en) * | 1994-02-11 | 1995-08-17 | Rudolf Goeckel | Illumination system for diffuse illumination of transparent surfaces or bodies |
DE19652829A1 (en) * | 1996-04-19 | 1997-10-23 | Bosch Siemens Hausgeraete | Electrical appliance such as kettle - has indicator including optical conductor surrounding housing to project light from light emitters all around housing circumference |
Also Published As
Publication number | Publication date |
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DE19860696A1 (en) | 2000-07-06 |
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