EP2361489A1 - Led array comprising a light sensor - Google Patents

Led array comprising a light sensor

Info

Publication number
EP2361489A1
EP2361489A1 EP09799100A EP09799100A EP2361489A1 EP 2361489 A1 EP2361489 A1 EP 2361489A1 EP 09799100 A EP09799100 A EP 09799100A EP 09799100 A EP09799100 A EP 09799100A EP 2361489 A1 EP2361489 A1 EP 2361489A1
Authority
EP
European Patent Office
Prior art keywords
led
light
light sensor
exit surface
arrangement according
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
EP09799100A
Other languages
German (de)
French (fr)
Other versions
EP2361489B1 (en
Inventor
Eduardo Pereira
Michael Zimmermann
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.)
Tridonic AG
Original Assignee
Tridonic AG
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 Tridonic AG filed Critical Tridonic AG
Publication of EP2361489A1 publication Critical patent/EP2361489A1/en
Application granted granted Critical
Publication of EP2361489B1 publication Critical patent/EP2361489B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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]
    • H05B45/20—Controlling the colour of the light
    • H05B45/22—Controlling the colour of the light using optical feedback
    • 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]
    • H05B45/30—Driver circuits
    • 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]
    • H05B45/40—Details of LED load circuits
    • 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]
    • H05B45/30—Driver circuits
    • H05B45/32—Pulse-control circuits
    • H05B45/325—Pulse-width modulation [PWM]

Definitions

  • the present invention generally relates to the operation of organic or inorganic LEDs or OLEDs. More specifically, the invention relates to a ⁇ nêtung such LEDs or OLEDs with the aid of a light sensor.
  • a light sensor 1 inside or outside the LED light detects the light of the at least one LED 2 before or after the light mixture.
  • a feedback signal 22 from the light sensor 1 is fed back to a control unit 23 as an actual value signal of the light generation. This signal is at least the amplitude again and may possibly also Freguenz or spectrum-specific statements.
  • the control unit for example internally or externally a dimming value signal 24 may be specified.
  • the control unit 23 controls the operation of the at least one LED 2 starting from a voltage supply shown as a converter in FIG. 7, which is supplied with a DC or AC input voltage Ui.
  • the control unit 23 can, for example, control the power of one or more individual LEDs by PWM modulation.
  • This described principle can be adopted in the present invention.
  • Em such a structure is already known in principle from EP 1 399 694 (WO 2202/099333), which relates to a lighting device with light-emitting diodes and light sensor arrangements for optical feedback.
  • FIG. 1 shows an LED lamp 12 which has one or more LEDs 2.
  • the lamp 12 has a housing
  • Light exit surface is provided, to which the light cone 7 of the LED 2 strikes.
  • the light cone 7 can be limited by a reflector wall.
  • the light exit surface has transparent regions 4 for the exit of the light from the LED 2 and at least one darkened region 5.
  • the reference numeral 6 for example by reflection on the reflector wall 7
  • light from the LED 2 can be reflected in such a way so as to strike the side of the darkened area 5 facing the LEDs.
  • the rear side of the darkened region 5 is designed such that the reflected light (reference numeral 6 in FIG. 1) is guided into a reflector 25 associated with a light sensor 1.
  • part of the light emitted thereby by the LED namely the part 6 in FIG. 1, is desired fed to the light sensor 1.
  • FIG. 2 illustrates a further problem of this arrangement of the light sensor 1.
  • Ambient light which is designated by the reference numeral 9 in FIG. 2, can pass from the outside of the LED light 12 through the transparent areas 4 to the rear side 26 of the darkened area, thus entering the area of the light sensor reflector 25 and is referred to as Fault on the sensor 1 perceived.
  • the first aspect of the invention relates to an LED arrangement, comprising: at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
  • a housing accommodating the at least one LED with a light exit surface
  • the light sensor is arranged outside the space defined by the light exit surface and the carrier.
  • a further aspect of the invention relates to an LED arrangement, comprising: at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
  • a housing accommodating the at least one LED with a light exit surface
  • At least one light sensor and a control unit functionally connected to the at least one LED and the light sensor, shading means being provided which prevent ambient light incident on the light sensor from outside the housing from passing through the light exit surface.
  • the at least one LED can be placed on a support and the light sensor behind the formed by en Trager
  • Another aspect of the invention relates to a
  • LED arrangement comprising: at least one LED arranged on a carrier, preferably a plurality of LEDs of at least two different colors,
  • a housing accommodating the at least one LED with a light exit surface through which a main light cone of the at least one LED passes,
  • the control unit operatively connected to the at least one LED and the light sensor, wherein the light sensor is hit by secondary light which is not generated directly or indirectly from the main light cone.
  • the secondary light can strike the light sensor from a further light exit surface of the at least one LED.
  • the further light exit surface is spatially separated from a light exit surface of the at least one LED, at which the main light cone exits.
  • the further light exit surface can be arranged on the rear side facing away from the main light cone of the LED chip.
  • the secondary light can pass through at least one recess in a carrier on which the LED is mounted to the back of the carrier.
  • the light sensor is preferably arranged in a region on the rear side of the carrier.
  • Light from an LED in particular an OLED (organic LED), can reach the back of the carrier through several recesses.
  • OLED organic LED
  • the secondary light may emanate from another LED which is aligned with that at least one LED from which the main light cone exits.
  • the further LED can be arranged on the same side or on the backside of a carrier on which at least one main light cone LED is arranged.
  • the LED array may include a plurality of LEDs of different colors, preferably at least one in the green, red, and blue spectrum, respectively.
  • the LED assembly may include a lens.
  • the LED array may comprise at least one color conversion material converted white LED.
  • the light sensor may have one or more photodiodes, which are preferably color-specific.
  • a lighting system may have an LED arrangement according to the invention.
  • Fig. 2 illustrates the negative influence of
  • 3 shows a first embodiment of the present invention with matched LEDs
  • 4 shows a further embodiment of the invention with matched LEDs arranged spatially separated from the main illumination LEDs
  • FIG. 5 shows a further embodiment of the invention, in which the light sensor is set back compared to a carrier plane of at least one LED
  • FIG. 6 shows a modification of the embodiment of FIG. 5 in that a single LED or OLED supplies a plurality of recesses in a set-back space with the light sensor 1, and FIG. 6
  • Fig. 7 shows schematically the basic operation of a fed back
  • Light sensor in the LED drive as can also be used in the present invention.
  • an LED lamp 12 is provided with a housing 3 and an LED 2 or an LED arrangement. It can be provided a reflector 7 to direct the beam of light from the LED 2 to a light exit surface 10 of the LED light.
  • the light exit surface 10 is preferably transparent throughout. Thus, it has no darkened areas compared to the prior art, ie at least no darkened areas which are surrounded by transparent areas and thus represent "dark islands" of the light exit area.
  • This light exit surface 10 may be formed, for example, as a diffuser, which is only one example of a light mixing element. This will preferably be the case if several differently colored LEDs 2 are provided for example in the spectra red, green, blue. Alternatively or additionally, the LED arrangement 2 can also have one or more dye-converted white LEDs.
  • the LED or LED arrangement 2 is arranged on a support 8, which can also achieve, for example, several functions such as the electrical supply (board) or a cooling effect or heat dissipation.
  • This exemplary embodiment of FIG. 3 is provided for the light-pressure coupling to the control unit (see FIG. 7) and the secondary LEDs 11. These secondary LEDs 11 are matched to the main illumination LEDs 2 in such a way that they have the same spectrum and preferably also the same temperature characteristics.
  • the secondary elements 11 are preferably located in the immediate vicinity of the LEDs 2 and therefore within the housing 3 of the LED lamp 12. Particularly preferred is the arrangement of the elements 11 on the same carrier 8 and preferably there on the back of the carrier. 8 Thus, the secondary LEDs 11 radiate into a region provided on the rear side 27 of the carrier 8. In this area, as shown, the light sensor 1 is arranged.
  • the light sensor 1 is therefore sealed off by the non-transparent carrier 8 from the space defined between the carrier 8 or the LED 2 and the light exit surface 10.
  • ambient light which as schematically shown, and provided with a reference numeral 6 can fall from the outside through the light exit surface 10 in the space between the carrier 8 and the light exit surface 10, do not fall on the light sensor 1 and thus can not represent a Storsignal.
  • the secondary LEDs 11 are preferably driven by the control unit (23 in FIG. 7) in the same way as the main light LEDs 2. Thus, a secondary light is generated purely for measurement purposes, which is not affected by the ambient light.
  • secondary LEDs 16 are provided, which are now, however, provided spatially separated from the LED lamp 12.
  • these secondary light LEDs 16 and also the light sensor 1 are assigned to the control / converter unit 14, 15.
  • This unit is connected to the LED lamp 12, for example via a supply cable 13 for driving the LEDs 12.
  • the measurement of Light characteristics on the one hand indirectly via the secondary light LEDs 16 and on the other hand in a spatially separated location with respect to the LED lamp 12 and the main light LEDs provided there 2.
  • an LED lamp 12 is preferably a Temperature sensor 28 is provided, the output of the control / drive unit 14, 15 is supplied, since yes, the temperature of the secondary LED 16 may differ significantly due to the spatial separation of the main light LEDs 2.
  • FIG. 5 now shows an exemplary embodiment in which the light incident on the light sensor 1 is not generated by secondary-light LEDs 11, 16 but by the main-light LEDs 2.
  • the one or more LEDs 2 have, in addition to the LED outlet surface 29 facing the light exit surface 10, a further outlet surface 30.
  • the exit surface 30 of the at least one LED 2 is arranged on the back side.
  • the support which may be formed as auxiliary support 17, one or more recesses 19 (for example bores) are provided, through which the light passes from the further exit surfaces 30 of the LED 2 into the region behind the auxiliary support 17.
  • the rear side of the LED 2 overlaps one or more recesses 19.
  • FIG. 6 shows a modification of the exemplary embodiment of FIG. 5 in that a flat-shaped LED 21, preferably an OLED, covers a plurality of recesses 19.
  • a flat-shaped LED 21 preferably an OLED
  • the light sensor can be provided to detect characteristics of the LED 2, since these can depend on the temperature, the aging, etc. of the LED.
  • the light sensor can in particular be color or spectrum-selective, so that a return signal for color value stabilization (color coordinate in the CIE system) can be used by selective activation of LEDs of different colors.
  • the invention proposes a sensor arrangement which ensures that the light sensor is not actually detected by the LED and not a combination of, for example, the light from the LED with ambient light.
  • the exemplary embodiment of Figure 5 and 6 are also modified so that the light sensor 1 is not located in a room behind the carrier 17, but rather in the carrier 17 is provided a recess that he thus also detect light from the LED 2 can, without the recesses 30 are necessary.

Abstract

The invention proposes an LED array, comprising: at least one LED disposed on a support, preferably a plurality of LEDs of at least two different colors, a housing for accommodating the at least one LED, said housing having a light exit surface, at least one light sensor, and a control unit that is functionally connected to the at least one LED and to the light sensor, wherein the light sensor is located outside the area defined by the light exit surface and the support.

Description

LED-Anordnung mit Lichtsensor LED arrangement with light sensor
Die vorliegende Erfindung bezieht sich allgemein auf den Betrieb von organischen oder anorganischen LEDs bzw. OLEDs. Genauer gesagt bezieht sich die Erfindung auf eine Änsteuerung derartiger LEDs bzw. OLEDs unter Zuhilfenahme eines Lichtsensors.The present invention generally relates to the operation of organic or inorganic LEDs or OLEDs. More specifically, the invention relates to a Änsteuerung such LEDs or OLEDs with the aid of a light sensor.
In Figur 7 ist eine Anordnung für einen solchen Betrieb schematisch dargestellt.In Figure 7, an arrangement for such operation is shown schematically.
Licht von einer oder mehreren LEDs 2, beispielsweise RGB- LEDs, wird vorzugsweise einer Streuscheibe oder einem anderen lichtmischenden Element zugeführt. Ein Lichtsensor 1 innerhalb oder ausserhalb der LED-Leuchte erfasst das Licht der wenigstens einen LED 2 vor oder nach der Lichtmischung. Ein Rückführsignal 22 von dem Lichtsensor 1 wird einer Steuereinheit 23 als Istwertsignal der Lichterzeugung zurückgeführt. Dieses Signal gibt wenigstens die Amplitude wieder und kann ggf. auch Freguenz bzw. Spektrum-spezifische Aussagen treffen.Light from one or more LEDs 2, for example RGB LEDs, is preferably supplied to a diffusing screen or to another light-mixing element. A light sensor 1 inside or outside the LED light detects the light of the at least one LED 2 before or after the light mixture. A feedback signal 22 from the light sensor 1 is fed back to a control unit 23 as an actual value signal of the light generation. This signal is at least the amplitude again and may possibly also Freguenz or spectrum-specific statements.
Als Sollwertsignal kann der Steuereinheit beispielsweise intern oder extern ein Dimmwertsignal 24 vorgegeben sein.As a setpoint signal, the control unit, for example internally or externally a dimming value signal 24 may be specified.
Die Steuereinheit 23 steuert den Betrieb der wenigstens einen LED 2 ausgehend von einer als Konverter in Figur 7 dargestellten Spannungsversorgung, die mit einer DC- oder AC-Eingangsspannung Ui versorgt ist. Die Steuereinheit 23 kann bspw. die Leistung einer oder individuell mehrerer LEDs durch PWM-Modulation steuern. Dieses geschilderte Prinzip kann bei der vorliegenden Erfindung übernommen werden. Em derartiger Aufbau ist grundsätzlich bereits aus der EP 1 399 694 (WO 2202/099333) bekannt, die eine Beleuchtungsvorrichtung mit Leuchtdioden und Lichtsensoranordnungen für optische Ruckkopplung betrifft.The control unit 23 controls the operation of the at least one LED 2 starting from a voltage supply shown as a converter in FIG. 7, which is supplied with a DC or AC input voltage Ui. The control unit 23 can, for example, control the power of one or more individual LEDs by PWM modulation. This described principle can be adopted in the present invention. Em such a structure is already known in principle from EP 1 399 694 (WO 2202/099333), which relates to a lighting device with light-emitting diodes and light sensor arrangements for optical feedback.
Bezug nehmend auf Figuren 1 und 2 soll nunmehr die Problematik der raumlichen Anordnung eines Lichtsensors erläutert werden.Referring to Figures 1 and 2, the problem of the spatial arrangement of a light sensor will now be explained.
In Figur 1 ist eine LED-Leuchte 12 gezeigt, die eine oder mehrere LEDs 2 aufweist. Die Leuchte 12 weist ein GehäuseFIG. 1 shows an LED lamp 12 which has one or more LEDs 2. The lamp 12 has a housing
('Luminaire') auf, an dessen Vorderseite eine('Luminaire') on whose front a
Lichtaustrittsflache vorgesehen ist, auf die der Lichtkegel 7 der LED 2 trifft. Der Lichtkegel 7 kann dabei durch eine Reflektorwand begrenzt sein.Light exit surface is provided, to which the light cone 7 of the LED 2 strikes. The light cone 7 can be limited by a reflector wall.
Die Lichtaustrittsflache weist genauer gesagt transparente Bereiche 4 zum Austritt des Lichts von der LED 2 sowie wenigstens einen abgedunkelten Bereich 5 auf. Wie durch das Bezugszeichen 6 angedeutet, kann beispielsweise durch Reflektion an der Reflektorwand 7 Licht von der LED 2 derart reflektiert werden, um somit auf die LEDs zugewandte Seite des abgedunkelten Bereichs 5 zu treffen. Die Ruckseite des abgedunkelten Bereichs 5 ist derart ausgebildet, dass das reflektierte Licht (Bezugszeichen 6 in Figur 1) in einen Lichtsensor 1 zugeordneten Reflektor 25 geleitet wird. Somit wird ein Teil des von der LED dabei ausgestrahlten Lichts, nämlich der Teil 6 in Figur 1, gewünscht dem Lichtsensor 1 zugeführt.More precisely, the light exit surface has transparent regions 4 for the exit of the light from the LED 2 and at least one darkened region 5. As indicated by the reference numeral 6, for example by reflection on the reflector wall 7, light from the LED 2 can be reflected in such a way so as to strike the side of the darkened area 5 facing the LEDs. The rear side of the darkened region 5 is designed such that the reflected light (reference numeral 6 in FIG. 1) is guided into a reflector 25 associated with a light sensor 1. Thus, part of the light emitted thereby by the LED, namely the part 6 in FIG. 1, is desired fed to the light sensor 1.
Wie sich unweigerlich bereits aus Figur 1 ergibt, weist diese Anordnung indessen den Nachteil auf, dass der abgedunkelte Bereich 5 sich in der Lichtaustrittsflache einerseits ästhetisch, andererseits aber auch hinsichtlich der erzielten Beleuchtungswirkung nachteilig auswirkt. Schließlich stellt dieser Bereich eine Unterbrechung der transparenten und somit auch lichtabstrahlenden Bereiche 4 der Lichtaustrittsflache dar.As inevitably results from Figure 1, however, this arrangement has the disadvantage that the darkened area 5 in the light exit surface on the one hand aesthetically, on the other hand, but also adversely affects the lighting effect achieved. Finally, this area constitutes an interruption of the transparent and thus also light-emitting areas 4 of the light exit surface.
In Figur 2 ist eine weitere Problematik dieser Anordnung des Lichtsensors 1 illustriert. Umgebungslicht , das mit dem Bezugszeichen 9 in Figur 2 bezeichnet ist, kann von außerhalb der LED-Leuchte 12 kommend durch die transparenten Bereiche 4 hindurch auf die Ruckseite 26 des abgedunkelten Bereichs gelangen, gerat somit in den Bereich des Lichtsensor-Reflektors 25 und wird als Störung an dem Sensor 1 wahrgenommen.FIG. 2 illustrates a further problem of this arrangement of the light sensor 1. Ambient light, which is designated by the reference numeral 9 in FIG. 2, can pass from the outside of the LED light 12 through the transparent areas 4 to the rear side 26 of the darkened area, thus entering the area of the light sensor reflector 25 and is referred to as Fault on the sensor 1 perceived.
Es ist Aufgabe der Erfindung, eine LED-Anordnung mit Lichtsensor zur Steuerung und/oder Regelung des Betriebs wenigstens einer LED bereitzustellen, die weniger durch auf die LED-Anordnung fallendes Umgebungslicht beemflusst ist.It is an object of the invention to provide an LED array with light sensor for controlling and / or regulating the operation of at least one LED, which is less affected by ambient light falling on the LED array.
Diese Aufgabe wird erfmdungsgemass durch die Merkmale der unabhängigen Ansprüche gelost. Die abhangigen Ansprüche bilden den zentralen Gedanken der Erfindung besonders vorteilhaft weiter.This object is achieved erfmdungsgemass by the features of the independent claims. The dependent claims further form the central idea of the invention particularly advantageous.
Em erster Aspekt der Erfindung bezieht sich auf eineLED- Anordnung, aufweisend: wenigstens eine auf einem Trager angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,The first aspect of the invention relates to an LED arrangement, comprising: at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsflache, unda housing accommodating the at least one LED with a light exit surface, and
- wenigstens einen Lichtsensor, und - eine mit der wenigstens einen LED und dem Lichtsensor funktionell verbundene Steuereinheit, wobei der Lichtsensor ausserhalb des durch die Lichtaustrittsflache und dem Trager definierten Raums angeordnet ist.- at least one light sensor, and - A functionally connected to the at least one LED and the light sensor control unit, wherein the light sensor is arranged outside the space defined by the light exit surface and the carrier.
Ein weiterer Aspekt der Erfindung bezieht sich auf eine LED-Anordnung, aufweisend: wenigstens eine auf einem Trager angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,A further aspect of the invention relates to an LED arrangement, comprising: at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsflache, unda housing accommodating the at least one LED with a light exit surface, and
- wenigstens einen Lichtsensor, und - eine mit der wenigstens einen LED und dem Lichtsensor funktionell verbundene Steuereinheit, wobei Abschattungsmittel vorgesehen sind, die verhindern, dass auf den Lichtsensor von ausserhalb des Gehäuses durch die Lichtaustrittsflache einfallendes Umgebungslicht fallt.at least one light sensor, and a control unit functionally connected to the at least one LED and the light sensor, shading means being provided which prevent ambient light incident on the light sensor from outside the housing from passing through the light exit surface.
Die wenigstens eine LED kann auf einem Trager angeordnet und der Lichtsensor hinter die durch en Trager gebildeteThe at least one LED can be placed on a support and the light sensor behind the formed by en Trager
Ebene zurückversetzt sein.Be set back.
Ein weiterer Aspekt der Erfindung bezieht sich auf eineAnother aspect of the invention relates to a
LED-Anordnung, aufweisend: wenigstens eine auf einem Trager angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,LED arrangement, comprising: at least one LED arranged on a carrier, preferably a plurality of LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsflache, durch die ein Hauptlichtkegel der wenigstens einen LED tritt,a housing accommodating the at least one LED with a light exit surface through which a main light cone of the at least one LED passes,
- wenigstens einen Lichtsensor, und - eine mit der wenigstens einen LED und dem Lichtsensor funktionell verbundene Steuereinheit, wobei auf den Lichtsensor Sekundärlicht trifft, das nicht direkt oder indirekt von dem Hauptlichtkegel aus erzeugt ist.- at least one light sensor, and a control unit operatively connected to the at least one LED and the light sensor, wherein the light sensor is hit by secondary light which is not generated directly or indirectly from the main light cone.
Das Sekundärlicht kann dabei von einer weiteren Lichtaustrittsfläche der wenigstens einen LED aus auf den Lichtsensor treffen. Die weitere Lichtaustrittsfläche ist räumlich von einer Lichtaustrittsfläche der wenigstens einen LED getrennt, an der der Hauptlichtkegel austritt.In this case, the secondary light can strike the light sensor from a further light exit surface of the at least one LED. The further light exit surface is spatially separated from a light exit surface of the at least one LED, at which the main light cone exits.
Die weitere Lichtaustrittsfläche kann auf der von dem Hauptlichtkegel abgewandten Rückseite des LED-Chips angeordnet sein. Das Sekundärlicht kann durch wenigstens eine Ausnehmung in einem Träger, auf der die LED angebracht ist, zu der Rückseite des Trägers gelangen. Der Lichtsensor ist vorzugsweise in einem Bereich auf der Rückseite des Trägers angeordnet.The further light exit surface can be arranged on the rear side facing away from the main light cone of the LED chip. The secondary light can pass through at least one recess in a carrier on which the LED is mounted to the back of the carrier. The light sensor is preferably arranged in a region on the rear side of the carrier.
Licht von einer LED, insbesondere einer OLED (organische LED) , kann durch mehrere Äusnehmungen auf die Rückseite des Trägers gelangen.Light from an LED, in particular an OLED (organic LED), can reach the back of the carrier through several recesses.
Das Sekundärlicht kann von einer weiteren LED aus austreten, die mit derjenigen wenigstens einen LED abgeglichen ist, von der aus der Hauptlichtkegel austritt.The secondary light may emanate from another LED which is aligned with that at least one LED from which the main light cone exits.
Die weitere LED kann auf der gleichen Seite oder auf der Rückseite eines Trägers angeordnet sein, auf dem wenigstens eine Hauptlichtkegel-LED angeordnet. Die LED-Anordnung kann mehrere LEDs unterschiedlicher Farbe aufweisen, vorzugweise wenigstens eine in dem grüne, roten bzw. blauen Spektrum.The further LED can be arranged on the same side or on the backside of a carrier on which at least one main light cone LED is arranged. The LED array may include a plurality of LEDs of different colors, preferably at least one in the green, red, and blue spectrum, respectively.
Die LED-Anordnung kann eine Streuscheibe aufweisen.The LED assembly may include a lens.
Die LED-Anordnung kann wenigstens eine Farbkonversionstoff-konvertierte weisse LED aufweisen.The LED array may comprise at least one color conversion material converted white LED.
Der Lichtsensor kann eine oder mehrere Photodioden aufweist, die vorzugsweise farbspezifisch ausgebildet sind.The light sensor may have one or more photodiodes, which are preferably color-specific.
Eine Beleuchtungsanlage kann eine erfindungsgemäße LED- Anordnung aufweisen.A lighting system may have an LED arrangement according to the invention.
Weitere Vorteile, Eigenschaften und Merkmale der Erfindung sollen nunmehr Bezug nehmend auf die Figuren der begleitenden Zeichnungen erläutert werden.Further advantages, characteristics and features of the invention will now be explained with reference to the figures of the accompanying drawings.
Dabei zeigen:Showing:
Fig. 1 zeigt eine aus dem Stand der Technik bekannte Anordnung eines Lichtsensors in einer LED-Leuchte,1 shows a prior art arrangement of a light sensor in an LED light,
Fig. 2 illustriert den negativen Einfluss vonFig. 2 illustrates the negative influence of
Umgebungslicht bei einerAmbient light at one
Lichtsensoranordnung gemäß dem Stand der Technik,Light sensor arrangement according to the prior art,
Fig. 3 zeigt ein erstes Ausführungsbeispiel der vorliegenden Erfindung mit abgeglichenen LEDs, Fig. 4 zeigt ein weiteres Ausführungsbeispiel der Erfindung mit abgeglichenen LEDs, die räumlich getrennt zu den Hauptbeleuchtungs- LEDs angeordnet sind,3 shows a first embodiment of the present invention with matched LEDs, 4 shows a further embodiment of the invention with matched LEDs arranged spatially separated from the main illumination LEDs,
Fig. 5 zeigt ein weiteres Ausführungsbeispiel der Erfindung, bei der der Lichtsensor im Vergleich zu einer Trägerebene wenigstens einer LED zurückversetzt ist,5 shows a further embodiment of the invention, in which the light sensor is set back compared to a carrier plane of at least one LED,
Fig. 6 zeigt eine Abwandlung des Ausführungsbeispiels von Figur 5 dahingehend, dass eine einzige LED bzw. OLED mehrere Ausnehmungen in einen zurückversetzten Raum mit dem Lichtsensor 1 mit Licht versorgt, undFIG. 6 shows a modification of the embodiment of FIG. 5 in that a single LED or OLED supplies a plurality of recesses in a set-back space with the light sensor 1, and FIG
Fig. 7 zeigt schematisch die grundsätzliche Wirkungsweise eines rückgekoppeltenFig. 7 shows schematically the basic operation of a fed back
Lichtsensors bei der LED-Ansteuerung, wie sich auch bei der vorliegenden Erfindung verwendet werden kann.Light sensor in the LED drive, as can also be used in the present invention.
Bezug nehmend auf Figur 3 soll nunmehr ein erstes Ausführungsbeispiel der vorliegenden Erfindung erläutert werden.Referring to Figure 3, a first embodiment of the present invention will now be explained.
Wiederum ist eine LED-Leuchte 12 mit einem Gehäuse 3 und einer LED 2 bzw. einer LED-Anordnung vorgesehen. Es kann ein Reflektor 7 vorgesehen sein, um den Lichtkegel von der LED 2 zu einer Lichtaustrittsfläche 10 der LED-Leuchte zu lenken. Die Lichtaustrittsfläche 10 ist dabei vorzugsweise durchgehend transparent. Sie weist also im Vergleich zum Stand der Technik keine abgedunkelten Flachen auf, d.h. zumindest keine abgedunkelten Flachen, die von transparenten Bereichen umgeben werden und somit „dunkle Inseln" der Lichtaustrittsflache darstellen.Again, an LED lamp 12 is provided with a housing 3 and an LED 2 or an LED arrangement. It can be provided a reflector 7 to direct the beam of light from the LED 2 to a light exit surface 10 of the LED light. The light exit surface 10 is preferably transparent throughout. Thus, it has no darkened areas compared to the prior art, ie at least no darkened areas which are surrounded by transparent areas and thus represent "dark islands" of the light exit area.
Das Licht von der LED 2 wird nicht zu dem Lichtsensor 1 hin reflektiert. Somit ergibt sich eine ästhetisch und beleuchtungstechnisch bevorzugte gleichmaßige Lichtaustrittsflache 10. Diese Lichtaustrittsflache 10 kann als beispielsweise als Streuscheibe ausgebildet sein, was nur ein Beispiel zu einem Lichtmischelement darstellt. Dies wird vorzugsweise der Fall sein, wenn mehrere unterschiedlich farbige LEDs 2 beispielsweise in den Spektren rot, grün, blau vorgesehen sind. Alternativ oder zusatzlich kann die LED-Anordnung 2 auch eine oder mehrere Farbstoffkonvertierte weiße LED aufweisen. Die LED bzw. LED-Anordnung 2 ist auf einem Trager 8 angeordnet, der beispielsweise auch mehrere Funktionen wie die elektrische Versorgung (Platine) oder auch eine Kuhlwirkung bzw. Wärmeableitung erzielen kann. Diesem Ausfuhrungsbeispiel von Figur 3 sind zur Lichtruckkopplung zu der Steuereinheit (siehe Figur 7) und der Sekundar-LEDs 11 vorgesehen. Diese Sekundar-LEDs 11 sind zu den Hauptbeleuchtungs-LEDs 2 derart abgeglichen, dass sie das gleiche Spektrum und vorzugsweise auch die gleichen Temperatureigenschaften aufweisen .The light from the LED 2 is not reflected toward the light sensor 1. This results in an aesthetically and lighting technically preferred gleichmaßige light exit surface 10. This light exit surface 10 may be formed, for example, as a diffuser, which is only one example of a light mixing element. This will preferably be the case if several differently colored LEDs 2 are provided for example in the spectra red, green, blue. Alternatively or additionally, the LED arrangement 2 can also have one or more dye-converted white LEDs. The LED or LED arrangement 2 is arranged on a support 8, which can also achieve, for example, several functions such as the electrical supply (board) or a cooling effect or heat dissipation. This exemplary embodiment of FIG. 3 is provided for the light-pressure coupling to the control unit (see FIG. 7) and the secondary LEDs 11. These secondary LEDs 11 are matched to the main illumination LEDs 2 in such a way that they have the same spectrum and preferably also the same temperature characteristics.
Wie in Figur 3 dargestellt, sind die Sekundarelemente 11 bevorzugt in der unmittelbaren Nahe der LEDs 2 und daher innerhalb des Gehäuses 3 der LED-Leuchte 12 angeordnet. Besonders bevorzugt ist die Anordnung der Elemente 11 auf den gleichen Trager 8 und vorzugsweise dort auf der Ruckseite des Tragers 8. Somit strahlen die Sekundar-LEDs 11 in einen auf der Ruckseite 27 des Tragers 8 vorgesehenen Bereich. In diesem Bereich ist wie dargestellt der Lichtsensor 1 angeordnet.As shown in Figure 3, the secondary elements 11 are preferably located in the immediate vicinity of the LEDs 2 and therefore within the housing 3 of the LED lamp 12. Particularly preferred is the arrangement of the elements 11 on the same carrier 8 and preferably there on the back of the carrier. 8 Thus, the secondary LEDs 11 radiate into a region provided on the rear side 27 of the carrier 8. In this area, as shown, the light sensor 1 is arranged.
Der Lichtsensor 1 ist also durch den nicht-transparenten Trager 8 von dem Raum abgeschottet, der zwischen dem Trager 8 bzw. der LED 2 und der Lichtaustrittsflache 10 definiert ist.The light sensor 1 is therefore sealed off by the non-transparent carrier 8 from the space defined between the carrier 8 or the LED 2 and the light exit surface 10.
Somit kann Umgebungslicht, das wie schematisch dargestellt, und mit einem Bezugszeichen 6 versehen, von außen durch die Lichtaustrittsflache 10 in den Raum zwischen dem Trager 8 und der Lichtaustrittsflache 10 fallen kann, nicht auf den Lichtsensor 1 fallen und kann somit kein Storsignal darstellen.Thus, ambient light, which as schematically shown, and provided with a reference numeral 6 can fall from the outside through the light exit surface 10 in the space between the carrier 8 and the light exit surface 10, do not fall on the light sensor 1 and thus can not represent a Storsignal.
Die Sekundar-LEDs 11 werden vorzugsweise von der Steuereinheit (23 in Figur 7) in der gleichen Weise wie die Hauptlicht-LEDs 2 angesteuert. Somit wird rein zu Messzwecken ein Sekundarlicht erzeugt, das vom Umgebungslicht nicht beeinflusst ist.The secondary LEDs 11 are preferably driven by the control unit (23 in FIG. 7) in the same way as the main light LEDs 2. Thus, a secondary light is generated purely for measurement purposes, which is not affected by the ambient light.
Bezug nehmend auf Figur 4 soll nunmehr ein Ausfuhrungsbeispiel erläutert werden, dass in gewisser Weise eine Abwandlung des Ausfuhrungsbeispiels von Figur 3 zeigt. Wiederum sind Sekundarlicht-LEDs 16 vorgesehen, die nunmehr indessen raumlich getrennt von der LED-Leuchte 12 vorgesehen sind. Im dargestellten Beispiel sind diese Sekundarlicht-LEDs 16 und auch der Lichtsensor 1 der Steuer/Konvertereinheit 14, 15 zugeordnet. Diese Einheit ist mit der LED-Leuchte 12 beispielsweise über ein Versorgungskabel 13 zur Ansteuerung der LEDs 12 verbunden. In diesem Beispiel erfolgt also die Messung von Lichtcharakteristiken einerseits indirekt über die Sekundarlicht-LEDs 16 und andererseits an einem raumlich getrennten Ort bezuglich der LED-Leuchte 12 und den dort vorgesehenen Hauptlicht-LEDs 2. In diesem Fall ist wie schematisch in Figur 4 dargestellt, an einer LED-Leuchte 12 vorzugsweise ein Temperatursensor 28 vorgesehen, dessen Ausgangssignal der Steuer/Treibereinheit 14, 15 zugeführt ist, da sich ja die Temperatur der Sekundarlicht-LED 16 aufgrund der raumlichen Trennung von der der Hauptlicht- LEDs 2 deutlich unterscheiden kann.With reference to FIG. 4, an exemplary embodiment will now be explained, which in a certain way shows a modification of the exemplary embodiment of FIG. Again, secondary LEDs 16 are provided, which are now, however, provided spatially separated from the LED lamp 12. In the example shown, these secondary light LEDs 16 and also the light sensor 1 are assigned to the control / converter unit 14, 15. This unit is connected to the LED lamp 12, for example via a supply cable 13 for driving the LEDs 12. In this example, therefore, the measurement of Light characteristics on the one hand indirectly via the secondary light LEDs 16 and on the other hand in a spatially separated location with respect to the LED lamp 12 and the main light LEDs provided there 2. In this case, as shown schematically in Figure 4, an LED lamp 12 is preferably a Temperature sensor 28 is provided, the output of the control / drive unit 14, 15 is supplied, since yes, the temperature of the secondary LED 16 may differ significantly due to the spatial separation of the main light LEDs 2.
Figur 5 zeigt nunmehr ein Ausfuhrungsbeispiel, bei denen das zu dem Lichtsensor 1 einfallende Licht nicht von Sekundarlicht-LEDs 11, 16, sondern von den Hauptlicht-LEDs 2 erzeugt wird.FIG. 5 now shows an exemplary embodiment in which the light incident on the light sensor 1 is not generated by secondary-light LEDs 11, 16 but by the main-light LEDs 2.
Gemäß diesem Ausfuhrungsbeispiel weist die eine oder mehrere LEDs 2 neben der der Lichtaustrittsflache 10 zugewandten LED-Austrittsflache 29 eine weitere Austrittsflache 30 auf. Im dargestellten Beispiel ist die Austrittsflache 30 der wenigstens einen LED 2 auf der Ruckseite angeordnet. In dem Trager, der als Hilfstrager 17 ausgebildet sein kann, sind eine oder mehrere Ausnehmungen 19 (beispielsweise Bohrungen) vorgesehen, durch die das Licht von den weiteren Austrittsflachen 30 der LED 2 in den Bereich hinter den Hilfstrager 17 gelangt. Die Ruckseite der LED 2 überlappt dabei eine oder mehrere Ausnehmungen 19.According to this exemplary embodiment, the one or more LEDs 2 have, in addition to the LED outlet surface 29 facing the light exit surface 10, a further outlet surface 30. In the example shown, the exit surface 30 of the at least one LED 2 is arranged on the back side. In the support, which may be formed as auxiliary support 17, one or more recesses 19 (for example bores) are provided, through which the light passes from the further exit surfaces 30 of the LED 2 into the region behind the auxiliary support 17. The rear side of the LED 2 overlaps one or more recesses 19.
In dem dargestellten Beispiel ist ein Raum zwischen dem Hilfstrager 17 und einem Haupttrager 18 vorgesehen, in den also das Licht von den weiteren Austrittsflachen 30 durch die Ausnehmungen 19 gelangt. In diesem Raum ist der Lichtsensor 1 angeordnet. Figur 6 zeigt eine Abwandlung des Ausfuhrungsbeispiels von Figur 5 dahingehend, dass eine flachig ausgebildete LED 21, vorzugsweise eine OLED mehrere Ausnehmungen 19 überdeckt. Somit gelangt das Licht von der Austrittsflache 30 auf der Ruckseite der flachigen LED 21 durch mehrere Ausnehmungen 19 in den Raum, in dem der Lichtsensor 1 angeordnet ist, was zu einer gewissen Mittelung der Messung der Lichtcharakteristik der LED 21 fuhrt.In the example shown, a space is provided between the auxiliary support 17 and a main support 18, in which the light thus passes from the further exit surfaces 30 through the recesses 19. In this room, the light sensor 1 is arranged. FIG. 6 shows a modification of the exemplary embodiment of FIG. 5 in that a flat-shaped LED 21, preferably an OLED, covers a plurality of recesses 19. Thus, the light passes from the exit surface 30 on the rear side of the flat LED 21 through a plurality of recesses 19 in the space in which the light sensor 1 is arranged, which leads to a certain averaging of the measurement of the light characteristic of the LED 21.
Wie auch beim Stand der Technik üblich, kann der Lichtsensor dazu vorgesehen sein, Charakteristiken der LED 2 zu erfassen, da diese von der Temperatur, der Alterung etc. der LED abhangen können. Dabei kann der Lichtsensor insbesondere färb- bzw. spektrumselektiv sein, so dass ein Ruckfuhrsignal zur Farbwertstabilisierung (Farbkoordinate im CIE-System) durch selektive Ansteuerung von LEDs unterschiedlicher Farbe verwendet werden kann.As usual in the prior art, the light sensor can be provided to detect characteristics of the LED 2, since these can depend on the temperature, the aging, etc. of the LED. In this case, the light sensor can in particular be color or spectrum-selective, so that a return signal for color value stabilization (color coordinate in the CIE system) can be used by selective activation of LEDs of different colors.
Die Erfindung schlagt eine Sensoranordnung vor, bei der sichergestellt ist, dass der Lichtsensor tatsachlich nicht von der LED und nicht etwa eine Kombination beispielsweise des Lichts von der LED mit ümgebungslicht erfasst.The invention proposes a sensor arrangement which ensures that the light sensor is not actually detected by the LED and not a combination of, for example, the light from the LED with ambient light.
Dabei kann das Ausfuhrungsbeispiel von Figur 5 und 6 auch dahingehend abgewandelt werden, dass der Lichtsensor 1 nicht in einem Raum hinter dem Trager 17 angeordnet ist, sondern vielmehr in dem Trager 17 eine Vertiefung vorgesehen ist, dass er auch somit Licht von der LED 2 erfassen kann, ohne dass die Ausnehmungen 30 notwendig sind.In this case, the exemplary embodiment of Figure 5 and 6 are also modified so that the light sensor 1 is not located in a room behind the carrier 17, but rather in the carrier 17 is provided a recess that he thus also detect light from the LED 2 can, without the recesses 30 are necessary.
Es ist darauf hinzuweisen, dass unter dem Begriff 'Lichtsensor' im Rahmen der vorliegenden Beschreibung und auch in den Ansprüchen stets eine oder mehrere Lichtsensoren zu verstehen sind, die jeweils beispielsweise eine oder mehrere Fotodioden aufweisen können . It should be noted that the term 'light sensor' in the present description and Also in the claims always one or more light sensors are to be understood, each of which may have, for example, one or more photodiodes.
Bezugszeichenliste :List of reference numbers:
I Lichtsensor 2 LEDsI light sensor 2 LEDs
3 Leuchtengehäuse3 luminaire housing
4 Transparente Scheibe, bspw. Streuscheibe4 Transparent pane, eg diffuser
5 Abgedunkelter Bereich der Lichtaustrittsfläche5 Darkened area of the light exit surface
6 Reflektiertes Licht 7 Hauptlichtkegel6 Reflected light 7 Main light cone
8 LED-Träger8 LED carriers
9 Umgebungslicht9 ambient light
10 Durchgehende Streuscheibe10 Continuous diffuser
II Abgeglichene („matched") LEDs 12 LED-LeuchteII Matched LEDs 12 LED light
13 Versorgungskabel13 supply cable
14 Separate Sensor- und ggf- Treiber- /Konvertereinheit14 Separate sensor and optional driver / converter unit
15 Treiber-/Konverterschaltung 16 Abgeglichene LEDs15 Driver / converter circuit 16 Balanced LEDs
17 Hauptplatine17 motherboard
18 Hilfsträger18 subcarriers
19 Ausnehmungen19 recesses
20 Sekundärlicht 21 OLED20 secondary light 21 OLED
22 Rückführsignal vom Lichtsensor22 Feedback signal from the light sensor
23 Steuereinheit23 control unit
24 Sollwertvorgabe DIMM24 Setpoint input DIMM
25 Lichtsensor-Reflektor 26 Rückseite des abgedunkelten Bereichs 525 Light sensor reflector 26 Back of the darkened area 5
27 Rückseite des Trägers 827 Rear of the carrier 8
28 Temperatursensor28 temperature sensor
29 Erste Lichtaustrittfläche29 First light exit surface
30 Weitere Lichtaustrittsfläche 30 Further light exit surface

Claims

Ansprüche : Claims :
1. LED-Anordnung, aufweisend:1. LED arrangement, comprising:
- wenigstens eine auf einem Träger, insbesondere einer Platine, angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,at least one LED arranged on a carrier, in particular a printed circuit board, preferably several LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsfläche, und- An at least one LED receiving housing with a light exit surface, and
- wenigstens einen Lichtsensor, und- at least one light sensor, and
- eine mit der wenigstens einen LED und dem Lichtsensor funktionell verbundene Steuereinheit, wobei der Lichtsensor ausserhalb des durch die Lichtaustrittsfläche und dem Träger definierten Raums angeordnet ist.- A functionally connected to the at least one LED and the light sensor control unit, wherein the light sensor is arranged outside the space defined by the light exit surface and the support.
2. LED-Anordnung, aufweisend:2. LED arrangement, comprising:
- wenigstens eine auf einem Träger angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsfläche, und- An at least one LED receiving housing with a light exit surface, and
- wenigstens einen Lichtsensor, und - eine mit der wenigstens einen LED und demat least one light sensor, and one with the at least one LED and
Lichtsensor funktionell verbundene Steuereinheit, wobei Abschattungsmittel vorgesehen sind, die verhindern, dass auf den Lichtsensor von ausserhalb des Gehäuse durch die Lichtaustrittsfläche einfallendes Umgebungslicht fällt.Light sensor functionally connected control unit, wherein shading means are provided which prevent incident on the light sensor from outside the housing through the light exit surface incident ambient light.
3. LED-Anordnung nach Anspruch 1 oder 2, bei der die wenigstens eine LED auf einem Träger angeordnet ist und der Lichtsensor hinter die durch en Trager gebildete Ebene zurückversetzt ist.3. LED arrangement according to claim 1 or 2, wherein the at least one LED is arranged on a support and the light sensor behind the through In the educated plane is set back.
4. LED-Anordnung, aufweisend:4. LED arrangement comprising:
- wenigstens eine auf einem Trager angeordnete LED, vorzugsweise mehrere LEDs wenigstens zweier unterschiedlicher Farben,at least one LED arranged on a carrier, preferably several LEDs of at least two different colors,
- eine die wenigstens eine LED aufnehmendes Gehäuse mit einer Lichtaustrittsflache, durch die ein Hauptlichtkegel der wenigstens einen LED tritt, - wenigstens einen Lichtsensor, unda housing accommodating the at least one LED with a light exit surface through which a main light cone of the at least one LED passes, at least one light sensor, and
- eine mit der wenigstens einen LED und dem Lichtsensor funktionell verbundene Steuereinheit, wobei auf den Lichtsensor Sekundarlicht trifft, das nicht direkt oder indirekt von dem Hauptlichtkegel aus erzeugt ist.a control unit operatively connected to the at least one LED and the light sensor, wherein the light sensor is incident on secondary light which is not generated directly or indirectly from the main light cone.
5. LED-Anordnung nach Anspruch 4, bei der das Sekundarlicht von einer weiteren Lichtaustrittsflache der wenigstens einen LED aus auf den Lichtsensor trifft, wobei die weiteren Lichtaustrittsflache raumlich getrennt zu einer Lichtaustrittsflache der wenigstens einen LED ist, an der der Hauptlichtkegel austritt .5. LED arrangement according to claim 4, wherein the secondary light from a further light exit surface of the at least one LED from hits the light sensor, wherein the further light exit surface is spatially separated from a light exit surface of the at least one LED at which emerges the main light cone.
6. LED-Anordnung nach Anspruch 5, bei der die weitere Lichtaustrittsflache auf der von dem Hauptlichtkegel abgewandten Ruckseite des LED- Chips angeordnet ist, und das Sekundarlicht durch wenigstens ein Ausnehmung in einem Trager, auf der die LED angebracht ist, zu der Ruckseite des Tragers gelangt, wobei der Lichtsensor ebenfalls in einem Bereich auf der Ruckseite des Tragers angeordnet i st .6. LED arrangement according to claim 5, wherein the further light exit surface is arranged on the side facing away from the main light cone back side of the LED chip, and the secondary light through at least one recess in a carrier on which the LED is mounted, to the back of the Tragers arrives, wherein the light sensor also arranged in an area on the back of the carrier i st.
7. LED-Anordnung nach Anspruch 6, bei der Licht von einer LED, insbesondere einer OLED, durch mehrere Ausnehmungen auf die Ruckseite des Tragers gelangt.7. LED arrangement according to claim 6, wherein the light from an LED, in particular an OLED, passes through a plurality of recesses on the rear side of the carrier.
8. LED-Anordnung nach Anspruch A1 bei der das Sekundarlicht von einer weiteren LED aus austritt, die mit derjenigen wenigstens einen LED abgeglichen ist, von der aus der Hauptlichtkegel austritt .8. LED arrangement according to claim A 1 in which the secondary light exits from a further LED, which is matched with that at least one LED, from which emerges from the main light cone.
9. LED-Anordnung nach Anspruch 8, bei der die weitere LED mit der Hauptlichtkegel-LED abgeglichen ist.9. LED assembly according to claim 8, wherein the further LED is aligned with the main light cone LED.
10. LED-Anordnung nach Anspruch 8 oder 9, bei der die weitere LED auf der gleichen Seite oder auf der Ruckseite eines Tragers angeordnet ist, auf dem wenigstens eine Hauptlichtkegel-LED angeordnet.10. LED arrangement according to claim 8 or 9, wherein the further LED is arranged on the same side or on the back side of a carrier, arranged on the at least one main light cone LED.
11. LED-Anordnung nach einem der vorhergehenden11. LED arrangement according to one of the preceding
Ansprüche, aufweisend mehrere LEDs unterschiedlicher Farbe, vorzugweise wenigstens eine xn dem grüne, roten bzw. blauen Spektrum.Claims, comprising a plurality of LEDs of different colors, preferably at least one xn the green, red or blue spectrum.
12. LED-Anordnung nach einem der vorhergehenden Ansprüche, aufweisend eine Streuscheibe.12. LED arrangement according to one of the preceding claims, comprising a lens.
13. LED-Anordnung nach einem der vorhergehenden Ansprüche, aufweisend wenigstens eine Farbkonversionstoff- konvertierte weisse LED.13. LED arrangement according to one of the preceding claims, comprising at least one color conversion material converted white LED.
14. LED-Anordnung nach einem der vorhergehenden Ansprüche, wobei der Lichtsensor eine oder mehrere Photodioden aufweist, die vorzugsweise farbspezifisch ausgebildet sind.14. LED arrangement according to one of the preceding claims, wherein the light sensor comprises one or more photodiodes, which are preferably formed color-specific.
15. Beleuchtungsanlage aufweisend eine LED-Anordnung nach einem der vorhergehenden Ansprüche. 15. Lighting system comprising an LED arrangement according to one of the preceding claims.
EP09799100.4A 2008-12-22 2009-12-21 Led array comprising a light sensor Active EP2361489B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008064397A DE102008064397A1 (en) 2008-12-22 2008-12-22 LED arrangement with light sensor
PCT/EP2009/067676 WO2010072731A1 (en) 2008-12-22 2009-12-21 Led array comprising a light sensor

Publications (2)

Publication Number Publication Date
EP2361489A1 true EP2361489A1 (en) 2011-08-31
EP2361489B1 EP2361489B1 (en) 2018-08-29

Family

ID=41800593

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09799100.4A Active EP2361489B1 (en) 2008-12-22 2009-12-21 Led array comprising a light sensor

Country Status (3)

Country Link
EP (1) EP2361489B1 (en)
DE (2) DE102008064397A1 (en)
WO (1) WO2010072731A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2579682B1 (en) 2011-10-07 2015-09-09 Goodrich Lighting Systems GmbH Method for controlling an aircraft light
US9360174B2 (en) 2013-12-05 2016-06-07 Ketra, Inc. Linear LED illumination device with improved color mixing
EP3875851A1 (en) * 2013-12-05 2021-09-08 Lutron Ketra, LLC Linear led illumination device with improved color mixing
DE102020104776A1 (en) * 2020-02-24 2021-08-26 Tridonic Gmbh & Co Kg Ambient light detection by means of a polarization filter arranged inside a luminaire

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5471052A (en) * 1993-10-25 1995-11-28 Eaton Corporation Color sensor system using a secondary light receiver
US5783909A (en) * 1997-01-10 1998-07-21 Relume Corporation Maintaining LED luminous intensity
US6611000B2 (en) * 2001-03-14 2003-08-26 Matsushita Electric Industrial Co., Ltd. Lighting device
US6741351B2 (en) 2001-06-07 2004-05-25 Koninklijke Philips Electronics N.V. LED luminaire with light sensor configurations for optical feedback
US7473879B2 (en) * 2003-12-19 2009-01-06 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. LED illumination system having an intensity monitoring system
JP3872810B1 (en) * 2005-08-12 2007-01-24 シャープ株式会社 Light source control device, illumination device, and liquid crystal display device
CN101390451B (en) * 2006-02-23 2012-07-04 松下电器产业株式会社 Led illumination device
US7569807B2 (en) * 2006-08-22 2009-08-04 Koninklijke Philips Electronics N.V. Light source with photosensor light guide
WO2008023306A1 (en) * 2006-08-25 2008-02-28 Philips Intellectual Property & Standards Gmbh Optical lighting device

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2010072731A1 *

Also Published As

Publication number Publication date
EP2361489B1 (en) 2018-08-29
DE112009003762A5 (en) 2012-10-11
DE102008064397A1 (en) 2010-06-24
WO2010072731A1 (en) 2010-07-01

Similar Documents

Publication Publication Date Title
DE60219504T2 (en) LED CONTROL DEVICE
DE102006030890B4 (en) System and method for generating white light using a combination of white phosphor conversion LEDs and non-phosphor conversion color LEDs
DE102005001685A1 (en) System and method for generating white light using LEDs
EP2701464B1 (en) Apparatus and method for producing light of a predetermined spectrum with at least four light sources of different colours
DE202012008792U1 (en) Lighting device for a radiator cover of a vehicle
DE112011102994T5 (en) LED-based light source with decorative and lighting function
EP2578928B1 (en) Lighting device with natural and artificial light
EP2893775A1 (en) Light fitting
WO2015058940A1 (en) Lighting device for a motor vehicle, comprising a multifunctional luminaire
EP2361489B1 (en) Led array comprising a light sensor
DE102004051548A1 (en) Illumination device for microscopes
DE102010011408A1 (en) Device with a lamp and method for its control
DE102014200436A1 (en) LED module and method of operation based on the detection of ambient light
WO2010015277A1 (en) Multi-led lighting device
EP3456151A1 (en) Lighting device with consistent lighting properties
DE102012219894A1 (en) Method for regulating or controlling ceiling lamp used for illuminating working region in room, involves dimming up direct light portion and subsequently indirect light portion of lamp during reducing radiation of foreign lights in region
DE102009031403A1 (en) Light-emitting element for use in lamp, has sensors and controller formed as optical window and arranged on semiconductor substrate, and interface provided for adjustment of light intensity and/or chromaticity coordinates
EP2981760A1 (en) Led module, luminaire comprising same and method for influencing a light spectrum
EP2924354A1 (en) Sensor-controlled light device and light device system
EP3374687A1 (en) Led light, and method for influencing the spectral distribution of the led light
WO2012055058A1 (en) Method and circuit arrangement for operating an led module for lighting purposes
EP2028913B1 (en) Lighting assembly with light source and sensor for capturing light given off by the light source
EP2981759A1 (en) Led module, luminaire comprising same and method for influencing a light spectrum
EP2566300B1 (en) LED Module sytem
EP2473007B1 (en) LED module for passive lighting current stabilisation

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20110609

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
17Q First examination report despatched

Effective date: 20160704

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20180608

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 1036735

Country of ref document: AT

Kind code of ref document: T

Effective date: 20180915

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502009015243

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 502009015243

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20180829

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181129

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181229

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181129

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20181130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20190124

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502009015243

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

26N No opposition filed

Effective date: 20190531

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

REG Reference to a national code

Ref country code: BE

Ref legal event code: MM

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502009015243

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: H05B0033080000

Ipc: H05B0045000000

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 1036735

Country of ref document: AT

Kind code of ref document: T

Effective date: 20181221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20181221

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20191226

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20180829

Ref country code: MK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20180829

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20091221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191231

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20201221

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20201221

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220527

Year of fee payment: 14

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530