New! View global litigation for patent families

WO2007101834A1 - Lighting system and method for operating a lighting system - Google Patents

Lighting system and method for operating a lighting system

Info

Publication number
WO2007101834A1
WO2007101834A1 PCT/EP2007/052044 EP2007052044W WO2007101834A1 WO 2007101834 A1 WO2007101834 A1 WO 2007101834A1 EP 2007052044 W EP2007052044 W EP 2007052044W WO 2007101834 A1 WO2007101834 A1 WO 2007101834A1
Authority
WO
Grant status
Application
Patent type
Prior art keywords
light
source
temperature
detector
unit
Prior art date
Application number
PCT/EP2007/052044
Other languages
German (de)
French (fr)
Inventor
Felix Franck
Andreas Huber
Peter Niedermeier
Oskar Schallmoser
Original Assignee
Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH
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

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00Electroluminescent light sources
    • H05B33/02Details
    • H05B33/08Circuit arrangements not adapted to a particular application
    • H05B33/0803Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials
    • H05B33/0842Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control
    • H05B33/0857Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light
    • H05B33/0872Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving load external environment sensing means
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR
    • H05B33/00Electroluminescent light sources
    • H05B33/02Details
    • H05B33/08Circuit arrangements not adapted to a particular application
    • H05B33/0803Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials
    • H05B33/0842Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control
    • H05B33/0857Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light
    • H05B33/0866Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving load characteristic sensing means
    • H05B33/0869Circuit arrangements not adapted to a particular application for light emitting diodes (LEDs) comprising only inorganic semi-conductor materials with control of the color point of the light involving load characteristic sensing means optical sensing means

Abstract

The invention relates to a lighting system having at least one light source (31, 41, 51), which has at least one temperature-dependent photometric characteristic variable, an open-loop and/or closed-loop control circuit (2), which is designed for the closed-loop control of the photometric characteristic variable of the light source (31, 41, 51), and at least one detector unit (32, 42, 52) which is designed to detect light signals from the light source (31, 41, 51), wherein the temperature of the detector unit (32, 42, 52) and/or the light source (31, 41, 51) can be determined and, as a function of the temperature information and information on the detected light signals, the closed-loop control of the photometric characteristic variable of the light source (31, 41, 51) can be implemented. The invention also relates to a method for operating a lighting system.

Description

description

Illumination system and method for operating a lighting system

technical field

The present invention relates to an illumination system having at least one light source which is operable by means of a control and / or regulating circuit. Furthermore, the invention relates to a method for operating such an illumination system.

State of the art

There are known lighting systems, which comprise at least ei ¬ ne light source, said light source photo ¬ metric data comprises, which are temperature dependent. This temperature dependence leads during operation of the light source to the fact that the emission behavior of the light source and thus vary the generated light signals from a desired emission behavior. A light generated image no longer corresponds to a desired photo. In known systems expensive and cumbersome to implement color sensors are furthermore used in order to compensate for the light image distortion based on the obtained information by means of this color sensors.

Summary of the Invention

The present invention is therefore based on the object, a lighting system and a method for

fen to sheep operating such an illumination system, with which a light image change of the illumination system can be little effort and accurately compensated.

This object is achieved by an illumination system having the features according to patent claim 1, and drive a comparison which has the features according to claim 19. ¬.

A solution according to illumination system comprises at least one light source, wherein the light source comprises at least one temperature-dependent photometric characteristic. The illumination system further comprises a control and / or regulating circuit, which is designed to control the photometric characteristic of the light source. In addition, the lighting system comprises at least egg ¬ ne detector unit which is designed to detect light signals of the light source and arranged, with a temperature of the detector unit and / or a temperature of the light source is determined, and depending on this temperature information, and information of the detected light signals, and thus at least of these two parameters of the temperature information and the light signal information, the regulation of the photometric characteristic of the light source is feasible. The lighting system thus Be ¬ central parameter in the form of temperature information on the one hand and the detected light signal information on the other hand carried out for an accurate and low-complexity compensation of the light image formed by the illumination system. The desired Emis ¬ reflectance behavior of the light source, and thus the emitted light signals can be achieved in a precise manner, and a relatively simple and inexpensive arrangement of the respective components of the system can be made possible. By capturing and basis important parameters influencing the temperature dependent photo ¬ metric characteristic of the light source these very pre ¬ zise can be controlled with regard to a desired emission behavior.

Preferably, in one embodiment, the temperature of the detector unit or can be determined and depending formations in a further embodiment, the temperature of the detector unit and the temperature of the light ¬ source of these, temperature-and the information of the detected light signals is the control of the photometric characteristic of the light source feasible.

Preferably, the light source and the detector unit is arranged on a common carrier, in particular a thermally conductive carrier, which is preferably realized by a metallic support. In such an arrangement, it may be preferred that, as temperature information of the detector unit and / or the light source is representative of the temperature of this support can be determined and for the control of the photometric characteristic quantity, this temperature of the carrier is taken into account. Especially when the light source and the detector unit, can be relatively close to or even aneinan ¬ the positioned adjacent the temperature of the carrier in general by the Erfas- solution also a relatively precise indication of the temperature of the light source and / or the detector unit are made possible. By detecting this only a temperature of the support, a low-expenditure determination of this parameter may thus be enabled. -A-

However, it may also be provided that the light source and the detector unit are not arranged on a common Trä ¬ ger and both the temperature of the light source ¬ and the temperature of the detector unit are separate rat detectable. It may also be envisaged that only the temperature of the detector unit or only the temperature of the light source can be detected and can be set as a temperature value for the other unit or source basis in each case. It can also be provided examples play as when the temperature of the light source is detected that these can be placed as a current temperature of the detector unit is based. Ins ¬ particular when this detector unit and the light source are arranged relative ¬ adjacent to each other. this can nalogue A- also be carried out with a detected temperature of the detector unit.

Preferably, a temperature sensor for detecting the temperature of the light source is arranged and thermally coupled to the light source ¬. The temperature sensor may, in an implementation, in which the light source is arranged on a carrier, even relatively far apart to be disposed to the light source. When the carrier is formed of a highly thermally conductive material, particularly a metal support such as an aluminum support, characterized a very accurate temperature detection can be made possible even with a very distant arrangement of the light source and the temperature sensor.

This temperature information of the temperature sensor can also be placed on the temperature of the detector unit basis in particular when the detector unit and the light source on a common thermally leit ¬ capable bearer are arranged.

However, as can also be provided that a temperature sensor for detecting the temperature of the detector unit is arranged and thermally coupled to the detector unit. The temperature sensor can for example be glued to the detector unit. Here, as ¬ derum can be provided that the temperature information also is taken as a basis instantaneous temperature of the light source taken into account with respect to the detector unit, in particular if the light source and the detector ¬ unit are arranged on a common thermally conductive substrate.

However, it may also be provided that a first temperature sensor for detecting the temperature of the light source is arranged and thermally coupled to said light source, and a second temperature sensor for detecting the temperature of the detector unit is arranged and thermally coupled to the detector unit.

If the light source and / or the detector unit arranged on ei ¬ NEM carrier, the or the respective temperature sensors at different positions of the carrier to be disposed. The temperature sensor may, for example, at the edge of the carrier or on the upper surface on which the light source and / or the detector unit are arranged at ¬, or else be positioned on an opposite underside of the carrier. This much ¬ fältigen positionings may be provided on both the light source and the detector unit are positioned even at a carrier. Thus, a variety of embodiments can be realized, which can be optimally designed in each case depending on the situation with regard to space requirements, cost, and more precise temperature sensing and temperature sufficient information with regard to a regulation of the photometric characteristic of the light source.

Preferably, the temperature of the light source and / or the temperature of the detector unit can be determined by evaluating a temperature-dependent electrical parameter of the light source. The electrical parameter is preferably a detectable depending on the operation of the light source operating voltage or a forward voltage of the light source. In particular, when the light source is a Lichtemittie ¬ rendes semiconductor device can lung by a Flusspo- and an operating state produced thereby a forward voltage to be determined. Due based lie ¬ gender dependencies and difference values of the current temperature of the light source can be determined with an appropriate evaluation methods.

It may also be provided that the temperature of the light source and / or the temperature of the detector unit can be determined by evaluating a temperature-dependent electrical parameter of the detector unit. Insbeson ¬ particular when the detector unit is preferably configured as a photodiode, the electric flux voltage can also here again a Be ¬ drive are generated in the flow direction and depending embossed by an electric current or an embossing current in the photodiode depending be determined. Again, a temperature of the detector unit and especially the photodiode can in turn be determined by specified underlying dependencies and reference values ​​on the basis of appropriate evaluation methods based on these temperature-dependent electrical parameters.

Preferably, it may be provided that at least two Differing embossing currents are impressed successively into the run in flow ¬ direction photodiode and dependent forward voltages are determined and of the at least two determined forward voltages, the temperature of the photodiode is dependent determined.

The photometric characteristic of the light source may be the color of the light source and / or the color point of the light source and / or the efficiency of the light source. These preferably considered photometric parameters are exemplary and their mention is not meant to be limiting. Under the general specification of a photometric characteristic all parameters are understood in principle, which are photometrically detectable.

The light source may be formed instead of the aforementioned exemplary as a light-emitting semiconductor component as a light bulb. Likewise, an exporting ¬ tion can be provided as a high-pressure lamp or fluorescent lamp or the electroluminescent lamp. The at least one light source is preferably adapted to produce white light. It may also be provided that the illumination system comprises a plurality of light sources, for example, at least three light sources, where formed ¬ at a first light source for generating red light, a second light source for generating blue light and a third light source for generating green light off is. Such a plurality of light sources may also be combined to a light source module. Such a light source module may include a plurality of light sources. It can for example be provided, in addition to a light source for generating red light, a light source for generating green light and a light source for generating blue light ei ¬ ne further light source is provided at least, which as example ¬ is also configured to generate green light. Likewise, it may be provided in addition to the three light sources for generating the green, blue and red light, an additional light source for producing yellow light and / or a cyan light source is disposed. This For ¬ composition in number and also with respect to the in each case to be generated light colors can be designed depending on the situation with regard to the use and arrangement of the illumination system. The illumination system may also include a plurality of such light source modules.

It may be envisaged that in an embodiment of the illumination system, a detector unit is arranged having a plurality of light sources only, which is adapted for detecting light signals from all light sources. However, it can also be provided that the light source JE a separate detector device is allocated. Likewise, it can be provided that each light source or each detector unit is arranged on a separate carrier, in particular a thermally conductive support. It may also be envisaged that the plurality of light sources are all positioned and / or optionally also a plurality of detector units on a common thermally conductive substrate.

Also, in an embodiment of the illumination system with a plurality of light sources and / or a plurality of detector units may be provided, that only a single temperature sensor is provided. Likewise, however, can also be provided that a combination of light source and detector unit having an associated Tempe ¬ ratursensor and each of these combinations is formed with a temperature sensor.

When a plurality of light sources, these can be operated by the control and regulating circuit so that is detected in an embodiment of the illumination system with le ¬ diglich a detector unit from which the light sources and hence which wavelengths of the received light signals are detected in the detector unit. The plurality of light sources may be operated in accordance to perform such detection or evaluation. In one embodiment of a lighting system, wherein each light source is assigned its own detector unit, these units may be Detektorein ¬ basically designed such that it is only designed for the corresponding spectral region of the light emitted by this light source associated with light signals.

Preferably, the control of the photometric characteristic all light sources depending on the temperature information of a light source and / or a detector unit is feasible. In this configuration, a re- can be achieved tively low-effort control, in which a minimum number of information to be collected is required.

It may also be provided that the control of the photometric characteristic of a light source is dependent on the temperature information of said light source and / or detector unit and the detected light signals from these light source separately from the control of the photometric characteristic of the other light sources. It is thus preferred formation of each light source and / or any associated detector unit and the detected light signals from these light source carried out, temperature-in this embodiment, and in particular independently carried out a control of the photometric characteristic of the other light sources and / or other detector units. Although this design requires a higher on ¬ but wall collects the information, ensures ande ¬ hand, a more precise adjustment of the Be ¬ lighting system in terms of an optimal light ¬ image.

In a according to the solution method of operating a lighting system having at least one light source, wel ¬ surface has at least one temperature-dependent photometric characteristic, this photometric characteristic can be changed by means of a control and regulating circuit of the illumination system. Light signals of the light source are ¬ ER by means of at least one detector unit and holds a temperature of the detector unit and / or a temperature of the light source can be determined. Depending on this temperature information and additional infor- mation of the detected light signals of the light source, the temperature-dependent characteristic variable of the photometric light source is controlled. By taking into account at least ¬ two parameters, temperature information and traffic signal information, a low-complexity and precise control can be made possible.

Advantageous embodiments of the lighting system are to be regarded as advantageous embodiments of lösungsgemä ¬ SEN procedure.

Brief Description of Drawing

An embodiment of the present invention is explained in detail below with reference to a schematic drawing. The only figure 1 shows a simplified representation of one embodiment of an illumination system according to Inventive ¬.

Preferred embodiments of the invention

1 shows a lighting system 1 is shown, comprising a control and / or regulating circuit. 2 In addition, the illumination system 1 comprises a first module 3, a second module 4 and a third module 5. The first module 3 comprises a light source 31 which is formed in the exporting ¬ approximately example for generating red light. Furthermore, the module 3 comprises a detector unit 32 which is designed as a photodiode. However, the Detektorein ¬ standardized 32 may be formed for example as a camera or a CCD sensor.

The light source 31 and the detector unit 32 are arranged on a common carrier 33, which guide, for example in the off is designed as a aluminum plate. In addition, a temperature sensor ¬ 34 is attached to a lateral edge of the carrier 33 in the embodiment. The temperature sensor 34 is positioned spaced apart from the light source 31 and ¬ to the detector unit 32nd Trains t forthcoming this temperature sensor 34 is spaced relatively far from the light source 31 and the Detektorein ¬ standardized 32. It is essential only that the temperature sensor has a sufficiently good thermal coupling to the light source 31 and the detector unit 32 34th As can be seen from the illustration in Figure 1, the light source 31 and the detector unit 32 spaced apart from each other, but nevertheless positioned relatively close to each other. The light source 31 and the detector unit 32 are positioned on a same surface of the support 33rd

Both the arrangement of the temperature sensor 34 and the positioning of the light source 31 and the detector unit 32 is merely exemplary.

The light source 31 and the detector unit 32 are electrically connected in the exemplary embodiment each have separate electrical connections to the control and / or regulating circuit. 2

The light source 31 is arranged such that emitted light signals 31a emit advantage in the direction of a display surface 6 and can pass therethrough. The detector unit 32 is arranged such that light signals are formatted ¬ Reflectors 31b detectable. The detector ¬ unit 32 is designed in particular for the detection of Hel ¬ ligkeit of light emitted from the light source 31 light. Furthermore, the illumination system 1 comprises the module 4 which is constructed analogously to the module. 3 The module 4 comprises a light source 41 which is formed in the Ausführungsbei ¬ game for generating green light. Representation beyond the module also has a 4 Detektorein ¬ standardized 42, wherein said detector unit 42 and the light source 41 are arranged on a common thermally conductive substrate 43rd A temperature sensor 44 is secured to the carrier 43 and via this support 43 with the light source 41 and the detector unit 42 ther ¬ mixed coupled. The carrier 43 is also formed here as an aluminum plate. As can be seen, the light source 41 is oriented such that emitted light signals from their emittier ¬ tes light respectively are emitted in the direction of the display 6 and 41 pass through this through ¬. A portion of this emitted light signals 41a is reflected, said reflected Lichtsig ¬ dimensional 41b are detected by the detector unit 42nd As can in particular ¬ by the brightness of the source of the light 41 emitted light to be detected. Also, the ¬ ses module 4 and in particular the light source 41 and the detector unit 42 are electrically connected to the control and / or regulating circuit ¬. 2

In addition, the illumination system 1 comprises third parties th module 5, which also comprises a light source 51 on ¬ formed to produce blue light. Moreover, the module 5 to a Detektorein ¬ standardized 52, which at a distance from the light source 51 on a common carrier 53, which in turn is formed as aluminum niumplatte are arranged. A temperature ¬ tursensor 54 is fixed to the support 53 and thermally coupled by that carrier 53 with the light source 51 and the detector unit 52nd The light source 51 is arranged for emitting light signals 51 towards the display. 6 Reflected light signals 51b are detected by the detector unit 52nd

In operation of the illumination system 1, white light can be generated by the light sources 31, 41 and 51st The light sources 31, 41 and 51 have a temperaturab ¬ dependent photometric characteristic quantity which is in the exemplary embodiment, the color locus. To control this Far ¬ Borts the light sources 31, 41 and 51 can be adjusted by means of the control and / or regulating circuit. 2

In operation of the illumination system 1, the light sources 31, 41 and 51 and the detector units 32, 42 and 52. Due to this heating temperature influence än ¬ the color location and a color location shift changed occurs. In order to avoid this and compensate for the instantaneous temperature of the substrate 33 is detected by the temperature sensor 34th This temperature of the support 33 ensures in the embodiment, a sufficiently ge ¬ precise indication of the temperature of the light source 31 and the detector unit 32. Thus, it is a single Tempe ¬ temperature, namely, detects the temperature of the support 33 by means of the temperature sensor 34 and this as a current set temperature for the light source 31 and the detector unit 32 is based. This temperature Informa ¬ tion is transmitted by a respective signal connection from the temperature sensor 34 to the control and / or regulating circuit. 2 The control and / or regulating circuit 2 is preferably designed as a microprocessor, which may include for example, memory units and evaluation units. In addition to these temperature information of the temperature sensor 34, the detector unit communicates 32 information about the detected light signals 31b to the control and / or regulating circuit 2. Depending on this temperature information and the information of the detected light signals 31b and comparing this information with reference values ​​is carried out a control of the color location of the light source 31 by the control and / or regulating circuit. 2

In an analogous manner, such a control of the color location for the light source 41 and the light ¬ source is 51. Again, each Temperaturinformatio ¬ NEN the handles 43 and 53 detected by the temperature sensors 44 and 54, and as instantaneous temperatures of the light source 41 and the detector unit 42 and the light source 51 and the detector unit 52 as a basis.

Taking into account these temperature information and the information about the detected light signals 41b and light signals 51b, then a separate control of the color location of the light source 41 and on the other hand, a control of the color location of the light source 51 is carried ¬ one hand.

A due to the temperature effect which may arise, color locus drift can be little effort, yet very quickly and accurately compensated.

Each of the modules 3 to 5 can also comprise a plurality of light sources. Such a module comprises a 3 to 5, a plurality of light sources, these can also be formed for producing respectively different colors of light off. For example, the module 3 adjacent to the light source 31 is also formed a further light source aufwei ¬ sen which green or example, to generate blue light.

Likewise, it can be provided that all the light sources 31, 41 and 51 and all of the detector units 32, 42 and 52 on a single common carriers are arranged. These are then placed relatively close to each other can be provided, that a single temperature sensor is provided for the entire arrangement only.

It can also be provided in the representation shown in Figure 1 that although the light sources 31, 41 and 51 shown are formed, but only a single detector unit is arranged. This single detector ¬ unit can be positioned in such a way then, that they detektie- the reflected light signals 31b, 41b and 51b can ren.

In addition to the embodiment illustrated in Figure 1 embodiment is that the temperature information will hold ER without an arrangement of the temperature sensors 34, 44 and 54 can also be provided. In such an embodiment 41, a temperature detection can be made possible based on temperature-dependent electrical parameters of the light sources 31, 51 and / or by temperature-dependent electrical parameters of the detector units 32, 42 and 52nd Here, for example according to a discontinuing operation state ¬ a forward voltage of the light source 31 are determined and stored on the basis in the control and / or regulating circuit 2 calculation method based on this forward voltage of the temperature of the light source are determined 31st Such a temperature detection can be performed even when the detector unit 32, if this is designed for example as a photodiode and is poled in the flow direction. By embossing an embossing stream and measuring the forward voltage of a temperature determination may also be made possible again based on this electrical parameter values ​​in the control and / or regulating circuit. 2 Analogously, this is also possible for the other light sources and further detector units.

It can also be provided that the light sources 31, 41 and 51 and the detector units 32, 42 and 52 respectively arranged on separate carriers.

In addition to the embodiment shown in the embodiment of Figure 1 indirect temperature measurement of the temperatures of the light sources 31, 41 and 51 and the temperatures of the detector units 32, 42 and 52, a direct temperature measurement of these components can be made possible. It may be provided that the temperature of these components is measured directly and not through the carrier 33, takes place 43 and 53rd

The temperature sensors 34, 44 and 54 may be ausgebil ¬ det example, as NTC-resistors or PTC resistors.

Claims

claims
1. An illumination system comprising at least one light source (31, 41, 51) which has at least one temperaturabhän ¬ pendent photometric characteristic, a control and / or regulating circuit (2) which (for controlling the photometric characteristic of the light source 31, 41, 51 ) is formed, and at least one Detektorein ¬ unit (32, 42, 52) which is formed (for detecting light signals from the light source 31, 41, 51), wherein the temperature of the detector unit (32, 42, 52) and / or the light source (31, 41, 51) can be determined and depending on the temperature information and information of the detected light signals (31b, 41b, 51b) controlling the photometric characteristic of the light source (31, 41, 51) is feasible.
2. Lighting system according to claim 1, characterized in that the light source (31, 41, 51) and the detector unit (32, 42, 52) on a common carrier, in particular a thermally conductive substrate, particularly a metallic carrier (33, 43, 53) are arranged as temperature information of the detector unit (32, 42, 52) and / or the light source (31, 41, 51), the temperature of the carrier (33, 43, 53) is ermittel ¬ bar and for controlling the photometric parameter is considered.
3. The illumination system of claim 1 or 2, characterized in that a temperature sensor (34, 44, 54) for detecting the temperature of the detector unit (32, 42, 52) is angeord- net and with the detector unit (32, 42, 52) is thermally coupled.
4. Lighting system according to one of the preceding claims, characterized in that a temperature sensor (34, 44, 54) for detecting the temperature of the light source (31, 41, 51) and with the light source (31, 41, 51) thermally coupled is.
5. Lighting system according to one of the preceding claims, characterized in that the temperature of the light source (31, 41, 51) and / or the detector unit (32, 42, 52) by evaluating egg nes temperature-dependent electrical parameter of the light source (31, 41 , 51) can be determined.
6. The illumination system according to claim 5, characterized in that said electrical parameter is a function of the operation of the light source (31, 41, 51) detectable operating clamping ¬ voltage or a forward voltage of the light source (31, 41, 51).
7. Lighting system according to one of the preceding claims, characterized in that the temperature of the light source (31, 41, 51) and / or the detector unit (32, 42, 52) by evaluating a temperature-dependent electrical parameter of the detector unit (32, 42, 52 ) can be determined.
8. The illumination system of claim 7, characterized in that the electrical parameters in a predetermined operating condition of the detector unit (32, 42, 52) is ermit- telbar.
is 9. The illumination system according to one of the preceding claims, characterized in that the detector unit comprises a photodiode (32, 42, 52).
10. The illumination system of claim 8 and 9, characterized that the operating state by a polarity of the photodiode (32, 42, 52) is characterized in the flow direction and at least one embossing current in the photodiode (32, 42, 52) is embossed and, depending in which the electrical forward voltage can be determined.
11. The illumination system of claim 10, characterized in that depending on the embossing current and the determined dependent forward voltage of the temperature of the photodiode (32, 42, 52) can be determined.
12. Lighting system according to one of the preceding claims, characterized in that the photometric characteristic (the color of the light source (31, 41, 51) and / or the color point of the light source (31, 41, 51) and / or the efficiency of the light source 31 , 51), 41st
13. Lighting system according to one of the preceding claims, characterized in that the light source (31, 41, 51) is an incandescent lamp or a light emitting semiconductor device.
14. Lighting system according to one of the preceding claims, characterized in that the at least one light source (31, 41, 51) for ER- generation of white light is formed.
15. Lighting system according to one of the preceding claims, characterized in that at least three light sources (31, 41, 51) are formed, wherein a first light source for generating ro ¬ th light, a second light source for generating blue light and a third light source for the generation ¬ supply green light is formed.
16. Lighting system according to claim 15, characterized in that the detector unit (32, 42, 52) for detecting light signals from all light sources (31, 41, 51) is arranged.
17. An illumination system according to claim 15 or 16, characterized in that the control of the photometric characteristic all light sources (31, 41, 51) depending on the temperature information of a light source (31, 41, 51) and / or the detector unit (32, 42, 52) feasibility bar.
18. An illumination system according to claim 15 or 16, characterized in that the control of the photometric characteristic of a light source (31, 41, 51) depending on the temperature information of said light source (31, 41, 51) and / or the detector unit (32, 42, 52) and the detected light signals from these light source (31, 41, 51) separately (by the control of the photometric characteristic of the other light sources 31, 41, 51) takes place.
19. A method of operating an illumination system having at least one light source (31, 41, 51) to ¬ least a temperature dependent photometric characteristics ¬ size has, which is variable by means of a control and / or regulating circuit (2), wherein Lichtsigna- Ie the light source (31, 41, 51) by means of at least ei ¬ ner detector unit (32, 42, 52) are detected and a temperature of the detector unit (32, 42, 52) and / or a temperature of the light source (31, 41, 51) be determined and depending on the Temperaturinfor- mation and information of the detected light signals the photometric characteristic of the light source (31, 41, 51) is regulated.
PCT/EP2007/052044 2006-03-09 2007-03-05 Lighting system and method for operating a lighting system WO2007101834A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE102006010999.6 2006-03-09
DE200610010999 DE102006010999A1 (en) 2006-03-09 2006-03-09 Illumination system and method for operating a lighting system

Publications (1)

Publication Number Publication Date
WO2007101834A1 true true WO2007101834A1 (en) 2007-09-13

Family

ID=38162311

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/052044 WO2007101834A1 (en) 2006-03-09 2007-03-05 Lighting system and method for operating a lighting system

Country Status (2)

Country Link
DE (1) DE102006010999A1 (en)
WO (1) WO2007101834A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007059130A1 (en) * 2007-12-07 2009-06-10 Osram Gesellschaft mit beschränkter Haftung Method and apparatus for setting a color locus and lighting system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411046B1 (en) * 2000-12-27 2002-06-25 Koninklijke Philips Electronics, N. V. Effective modeling of CIE xy coordinates for a plurality of LEDs for white LED light control
US20030133491A1 (en) * 2002-01-04 2003-07-17 Kelvin Shih LED junction temperature tester
US20030230991A1 (en) * 2002-06-17 2003-12-18 Koninklijke Philips Electronics N.V. LED-based white-light backlighting for electronic displays
US20040079866A1 (en) * 2002-08-05 2004-04-29 Naoki Nishiyama Optical receiver and a method for manufacturing the same
WO2004086822A1 (en) * 2003-03-25 2004-10-07 sitronic Ges. für elektrotechnische Ausrüstung mbH & Co. KG Motor-vehicle illumination module
US20040262491A1 (en) * 2003-06-30 2004-12-30 Posamentier Joshua D. Illuminated and non-illuminated photodiodes for monitoring and controlling AC and DC components of a laser beam

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6411046B1 (en) * 2000-12-27 2002-06-25 Koninklijke Philips Electronics, N. V. Effective modeling of CIE xy coordinates for a plurality of LEDs for white LED light control
US20030133491A1 (en) * 2002-01-04 2003-07-17 Kelvin Shih LED junction temperature tester
US20030230991A1 (en) * 2002-06-17 2003-12-18 Koninklijke Philips Electronics N.V. LED-based white-light backlighting for electronic displays
US20040079866A1 (en) * 2002-08-05 2004-04-29 Naoki Nishiyama Optical receiver and a method for manufacturing the same
WO2004086822A1 (en) * 2003-03-25 2004-10-07 sitronic Ges. für elektrotechnische Ausrüstung mbH & Co. KG Motor-vehicle illumination module
US20040262491A1 (en) * 2003-06-30 2004-12-30 Posamentier Joshua D. Illuminated and non-illuminated photodiodes for monitoring and controlling AC and DC components of a laser beam

Also Published As

Publication number Publication date Type
DE102006010999A1 (en) 2007-09-13 application

Similar Documents

Publication Publication Date Title
US6448550B1 (en) Method and apparatus for measuring spectral content of LED light source and control thereof
US6753661B2 (en) LED-based white-light backlighting for electronic displays
US7521872B2 (en) Integrated lamp with feedback and wireless control
US7350933B2 (en) Phosphor converted light source
US20060256049A1 (en) Automatic photo-colorimetric paratmeter control device for light boxes with colour leds
US7323676B2 (en) Color photosensor with color filters and subtraction unit
US20020097000A1 (en) White led luminary light control system
US6611000B2 (en) Lighting device
US6844931B2 (en) Spectrophotometer and its use
US7294816B2 (en) LED illumination system having an intensity monitoring system
US7319298B2 (en) Digitally controlled luminaire system
US20080191631A1 (en) Illumination Control System for Light Emitters
US20030076056A1 (en) Method and apparatus for sensing the color point of an RGB LED white luminary using photodiodes
US20070041185A1 (en) Vehicle Lighting Device and LED Light Source Therefor
US7731387B2 (en) Lighting device with user interface for light control
US20050230600A1 (en) LED array having array-based LED detectors
US20060226336A1 (en) Apparatus and method for collecting and detecting light emitted by a lighting apparatus
US20060193133A1 (en) Lamp
US20090189530A1 (en) Method and apparatus for light intensity control
US20080093530A1 (en) Illumination System
US6498440B2 (en) Lamp assembly incorporating optical feedback
JP2002344031A (en) Illuminating unit
US20060006821A1 (en) LED-based luminaire utilizing optical feedback color and intensity control scheme
US7173384B2 (en) Illumination device and control method
US20110084615A1 (en) Led assembly, led fixture, control method and software program

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application
NENP Non-entry into the national phase in:

Ref country code: DE

122 Ep: pct app. not ent. europ. phase

Ref document number: 07726629

Country of ref document: EP

Kind code of ref document: A1