EP3086624A1 - Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage - Google Patents

Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage Download PDF

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Publication number
EP3086624A1
EP3086624A1 EP16166130.1A EP16166130A EP3086624A1 EP 3086624 A1 EP3086624 A1 EP 3086624A1 EP 16166130 A EP16166130 A EP 16166130A EP 3086624 A1 EP3086624 A1 EP 3086624A1
Authority
EP
European Patent Office
Prior art keywords
circuit
module
driver
resistor
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP16166130.1A
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German (de)
English (en)
Inventor
Wouter Oepts
Haibo Qiao
Duo L. LI
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.)
Signify Holding BV
Original Assignee
Philips Lighting Holding BV
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 Philips Lighting Holding BV filed Critical Philips Lighting Holding BV
Priority to EP16166130.1A priority Critical patent/EP3086624A1/fr
Publication of EP3086624A1 publication Critical patent/EP3086624A1/fr
Withdrawn legal-status Critical Current

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    • 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
    • H05B47/00—Circuit arrangements for operating light sources in general, i.e. where the type of light source is not relevant
    • H05B47/10—Controlling the light source
    • H05B47/175—Controlling the light source by remote control
    • 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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/18—Controlling the intensity of the light using temperature feedback

Definitions

  • This invention relates to the control of a lighting unit.
  • LED lighting is transforming the lighting industry, such that light products are no longer merely on/off devices, but have become sophisticated devices with more elaborate control options, made possible by the easy controllability of LEDs.
  • the required current to be supplied by a driver circuit varies for different lighting units/modules, and for different configurations of lighting unit.
  • the latest LED driver circuits are designed to have sufficient flexibility that they can be used for a wide range of different lighting units, and for a range of numbers of lighting units.
  • an intelligent electronic driver circuit in a LED lighting fixture (often called "ballast") is now frequently separate from the lighting module itself, to enable this flexibility in the design of a lighting system.
  • an operating window defines a relationship between the output voltage and output current that can be delivered by the driver circuit. Providing the requirements of a particular lighting load fall within this operating window, the driver circuit is able to be configured for use with that particular lighting load, giving the desired driver circuit flexibility. This means a driver circuit is able to be used for LED units of different design and from different manufacturers and for a wide range of applications, providing that the required current and voltage setting fits the operating window. It also enables lighting generation upgrades without changing the driver circuit.
  • the driver circuit needs to have its output current set to the desired level within its operating window. This can be achieved by programming the driver circuit to deliver a specific current.
  • an alternative solution which enables a less complicated interface for the user is to provide current setting using a setting component, such as a resistor, outside the driver circuit.
  • a setting component such as a resistor
  • This resistor can for example be placed on a PCB which provides the interface between the driver circuit and the LED terminals, or the resistor can be integrated as part of a connection cable or connector unit. The value of the resistance is detected for subsequent control of the output of the driver circuit.
  • the value of the current setting resistor influences the behavior of the driver circuit, which can then be used to configure its output accordingly, so that the output current is determined by the resistance value. Once the current has been set, the voltage delivered by the driver circuit will vary depending on the load presented to it (since the LEDs are current driven), but the driver circuit will maintain this voltage within the operating window.
  • a lighting module of this type is referred to as an analog module, and there is an analog interface, with the lighting module having a passive component with a value which indicates its power requirement.
  • the average LED current is controlled and the LED current is maintained continuously.
  • the driver circuit is for example based on a switched mode power converter architecture.
  • This known system does not allow the end user to change the current (and light output flux) of the lighting module. If a different current is needed, the setting resistor needs to be modified. Typically, the current setting resistor of the module cannot be changed by the customer.
  • An alternative to placing a setting resistor in the driver is to have a remotely settable drive current, which involves wireless communication with the driver to program the driver. The drive current is then set by the driver and no additional components in the lighting module are required.
  • This approach consists of many driver types (fixed output, dimming, DALI dimming, different housings, different power).
  • Examples according to an aspect of the invention provide a solid state lighting module, comprising:
  • This approach involves integrating the configuration function in the lighting module instead of in the driver.
  • the output resistance can be adapted within the lighting module, and then determined by existing driver architectures without modification, while at the same time the ability of the user to tailor individual lighting modules to their needs is enabled.
  • the driver portfolio thus does not have to change.
  • the output resistance of the resistor circuit is independent of light source drive signals from the connected driver to power the solid state light source.
  • the resistor circuit is not part of a power (or current) sensing arrangement for feedback control of the driver.
  • the resistor circuit is used to convey information on a desired power level rather than providing feedback information.
  • the resistor circuit is for conveying the information on the desired power according to the manufacturer design of the LED module design or a user's preference, rather than conveying information about actual power delivered to the light source.
  • the control interface may comprise a NFC receiver, comprising a NFC antenna and a NFC receiver circuit.
  • the lighting module may be configured wirelessly by a NFC configuration device of the end customer.
  • a power supply circuit may be provided for generating a power supply for the control circuit from light source drive signals received from a connected driver.
  • the lighting module does not require a dedicate power source, but can extract any required power from the lighting signal (i.e. the drive current).
  • the power supply circuit may for example comprise a transistor circuit having an output transistor and a threshold element applied to the control terminal of the output transistor thereby to set an output voltage of the output transistor.
  • the advantage of this example is low cost due to the simplicity of the linear power supply.
  • power supply circuit is a switch mode power supply circuit. This can also generate a supply voltage from a current input tapped from the lighting unit terminals.
  • the advantage of this example is the switched mode power supply provides a high efficiency and low power loss.
  • Another example of power supply circuit is a voltage line in parallel with a certain number of solid state light sources wherein a forward voltage of said certain number of solid state light sources corresponds to an output voltage as the power supply.
  • the advantage of this example is low cost while high efficiency since the solid state light source provides a stable forward voltage across itself.
  • the NFC receiver may comprise a power harvesting circuit may be provided for generating a power supply for the control interface from a wireless signal received from the external configuration device.
  • the external configuration device may provide the required power wirelessly.
  • the output resistance may be defined between:
  • the interface for conveying the output resistance may be totally different from the power interface to drive the light source.
  • the output resistance may share one terminal of the light source, such as using a common ground terminal.
  • the resistor circuit comprises a set of resistor branches, each comprising a resistor and a switch in series, and the branches being in parallel, wherein the control circuit is adapted to control the settings of the switches thereby defining the configuration of the resistor circuit.
  • the resistor circuit comprises first and second terminals for connection to the driver, wherein the resistor circuit comprises:
  • the switching circuit may comprise a transistor which operates in a linear control mode. According to the sensed voltage and current, the transistor base (or gate) may be dynamically regulated. This sets the equivalent resistance to the desired level.
  • the resistor circuit comprises first and second terminals for connection to the driver and for receiving a voltage, wherein the resistor circuit comprises a current sensor for sensing the current flowing between the first and second terminals,
  • control circuit comprises a current control unit for controlling the current through the resistor circuit using the configuration information as well as feedback of the sensed current.
  • the circuit functions as a current source, and the current delivered is interpreted by the driver. Again, a feedback mechanism is defined for controlling the effective resistance presented by providing control of the current delivered.
  • the control methods may be based on analogue or digital control.
  • the module may further comprise a temperature sensor for sensing temperature, wherein the control circuit is adapted for controlling the configuration of the resistor circuit thereby to set the output resistance further in response to the sensed temperature.
  • a thermal function can be built into the module. This for example allows the possibility to program the module to stay below a maximum temperature (equal to a minimum lifetime).
  • the driver will for example continuously measure the current setting resistor, so that any time the current setting resistor value is changed, the driver will respond by changing its output current.
  • the control interface may be adapted to receive the configuration information before the module is driven by the connected driver. This enables the module to configured in a factory or during installation.
  • the invention also provides a lighting module system comprising:
  • This configuration device may be used by the end user when determining how to use the lighting module.
  • the desired power for example comprises the rated power of the lighting module.
  • This rated power defines the normal current/power that is required by the lighting module.
  • the lighting module requires a current or a current window which defines the rated power.
  • the invention also provides a lighting circuit comprising:
  • the driver may comprise:
  • the invention also provides a method of controlling a solid state lighting module which comprises a solid state light source and a resistor circuit, wherein an output resistance of the resistor circuit is for conveying to a connected driver information on a desired power to be applied to the solid state light source, wherein the method comprises:
  • a solid state lighting module may be driven by:
  • the invention provides a solid state lighting module, comprising a solid state light source and a resistor circuit, wherein an output resistance of the resistor circuit is for conveying to a connected driver information on a desired power to be applied to the solid state light source.
  • a control interface is provided for receiving configuration information from an external configuration device; and a control circuit configures the resistor circuit thereby to set the output resistance in response to received configuration information.
  • Down lighting and accent lighting solutions are typically based on LED modules, where each module combines a LED light engine and an LED driver.
  • the light engine may for example be based on Chip on Board (CoB) LEDs. Holders are used to mount the CoB LEDs and a cable passes from the holder to the driver.
  • the total system thus consists of a driver, cable and light engine.
  • driver flexibility means that there is a large range of drivers that can drive the same light engine. For instance there are fixed output current drivers, dimming drivers and programmable drivers. There are also different housing types.
  • the PCB may for example provide a circuit that allows the driver to sense the temperature of the module as well as having a setting resistor used by the driver to know and set the correct current.
  • the LED module 10 comprises the light engine 12 (i.e. the LED string), a current setting resistor 14 and a thermal protection circuit 16.
  • the module 10 connects to a driver 18 using only three terminals. Terminals LED+ and LED- connect to the ends of the LED string 12, and a third terminal LEDset enables the driver 18 to measure the resistance of the current setting resistor 14 by injecting a measurement current Iset. With a certain resistance of the current setting resistor in the LED module, a certain voltage occurs across the setting resistor and is detected by the driver 18, and in turn the driver 18 is aware of how much current/power the LED module requires.
  • This arrangement does not allow the end user to change the current (and therefore light output flux) of the light module 10. If a different current is needed, the setting resistor 14 needs to be modified.
  • a customer using the modules to build luminaires may desire to optimize their luminaire light output to their preferences, without being limited to a fixed light output, temperature or power. For instance, their own optical design may require less light output from the module. Alternatively, due to the use of a miniaturized heat sink, a reduced power may be desired to prevent the module reaching too high temperatures.
  • a setting resistor may be inserted into the driver by the customer. The driver then uses this setting resistor to define the output current.
  • NFC near field communication
  • Philips Trade Mark
  • SimpleSet Trade Mark
  • the invention is based on the integration of configuration functionality in a lighting module (instead of in the driver).
  • a PCB may be provided as part of the LED holder, which implements an NFC antenna and an NFC chip.
  • FIG. 2 shows a first example of a lighting module coupled to a driver 22, with a first interface type.
  • the driver interface comprises terminals LED+ and LED- for the LED string, and a separate pair of terminals RSET2 and SGND for measuring the external current setting resistor in the light module. This is known as an RSET2 interface.
  • the driver 22 has a power unit 220 for providing power to the lighting module, and a sensing unit 222 for coupling to the resistor circuit for detecting the output resistance.
  • a controller 224 is used for controlling the power applied to the lighting module by the power unit 220 in dependence on the desired power conveyed by the detected output resistance.
  • the controller 224 should take the information on the desired power as a reference to determine the operation behavior of the power unit 220 to provide actual power in accordance with the desired power.
  • the controller 224 should sense the actual power provided by the power unit and compare the actual power with the desired power, and in turn the error therebetween can be used for tuning the power unit 220 so as to reduce the error.
  • the controller of the driver may comprise a feedback loop independent from said resistor network, for sensing the actual light source drive signals provided by the power unit 220 to the lighting module and providing the sensed light source drive signals to the controller 224.
  • This feedback path includes the current sensor 226 within the light module or alternatively within the driver.
  • the controller 224 of the driver is then further adapted to control the light source drive signals provided by the power unit 220 according to the rated power of the lighting module and the sensed light source drive signals.
  • This provides a regulation of the power supply delivered to the lighting module.
  • the LED module 20 comprises a power supply 23 which provides the power for a microprocessor 24.
  • This power supply is tapped from the LED string. It may be tapped only from a portion of the LED string in order to minimize the power loss from the power supply. Alternatively, this power supply can be a more complicated switch mode power supply or a simple linear power supply.
  • the microprocessor 24 includes a near field communication integrated circuit (IC), in particular an NFC reader, which translates NFC commands into a signal for controlling a resistor circuit 26.
  • the microprocessor 24 also functions as a control circuit for controlling a configuration of the resistor circuit 26 thereby to set the output resistance.
  • the output resistance is defined between a ground terminal of the module SGND and a resistor output terminal RSET2.
  • the near field communication signal is received using an antenna 28.
  • the resistor circuit 26 is an electronic circuit which is used to simulate a physical resistor that is used by the LED driver for current setting.
  • the output resistance of the resistor circuit is conveyed to the connected driver 22 and encodes information about the desired power to be applied to the LED string.
  • the module optionally includes a temperature sensor 29 which may be used for setting a maximum temperature or for controlling the lifetime of the module as discussed below.
  • the NFC IC functions as a control interface for receiving configuration information from an external configuration device 30.
  • the external configuration device provides configuration information which is received by the microprocessor 24.
  • the external configuration device 30 comprises an NFC IC 32, in particular an NFC transmitter, and an antenna 34.
  • a user interface 36 enables a user to select a desired output flux which is translated into a corresponding value of the resistor which is to be simulated by the resistor circuit 26.
  • the output resistance of the resistor network is independent of the light source drive signals from the connected driver 22 used to power the LED string.
  • the desired output may be the rated power of the lighting module.
  • the control interface i.e. the NFC receiver of the microprocessor 24
  • the control interface is adapted to receive the configuration information from the external configuration device 30 before the module is driven by the connected driver. This can be carried out by a customer before the lighting system is installed.
  • the NFC communication can be used to set the desired flux lighting to the controller 24 using wireless power transfer from the external configuration device 30, with no other power provided to the module.
  • the NFC reader may comprise a power harvesting circuit to harvest enough energy to receive the NFC command and store the signal in a nonvolatile RAM, even before the LED module is powered by the driver. After the LED module is powered by the driver, the microcontroller reads the signal in the RAM and set the output resistance of the resistor circuit. In this case, only when the driver is powered, does the resistor circuit need to be controlled.
  • FIG 3 shows a second example of a lighting module coupled to a driver 22, with a second interface type.
  • the module 20 includes the same components as in Figure 2 and they are given the same reference numbers. The only difference is that the current setting resistor and the LED string 12 shares a common terminal such as the ground terminal. The temperature sensor is not shown, and the external configuration element is also omitted from Figure 3 .
  • the LED string is between terminals LED+ and LED-, and the setting resistor is between a light source terminal LED- and a resistor output terminal REST3. This is known as an RSET3 interface.
  • the terminal LED- serves as the ground terminal for the resistor circuit 26.
  • the same module may function with both RSET2 and RSET3 drivers.
  • the module of Figure 2 with four output terminals may be used with the RSET3 driver of Figure 3 simply by connecting the LED- and SGND terminals together, i.e. connecting two of the LED module connections to the single LED- driver connection.
  • the LED module circuit may be implemented in a small space provided by an LED holder.
  • the circuit is used to mimic a current setting resistor.
  • the module is then programmed with a desired value of the current setting resistor, and it can be connected to any driver that has RSET2 or RSET3 functionality.
  • the invention enables an existing driver portfolio to be used, whilst still providing a simple user capability to set the desired output of the light engine.
  • the module may also implement a thermal function by including a temperature sensor which is used to adapt the simulated resistance value in dependence on the temperature level. This may be used to program the module to reduce its desired power to make it stay below a maximum temperature, which may for example enable implementation of a minimum lifetime.
  • the power supply 23 is used to generate a power supply for the control circuit 24, such as 5V, from the LED+ and LED- module inputs or from a portion of the LED string.
  • a power supply for the control circuit 24 such as 5V
  • Figure 4 shows a first example which comprises a transistor circuit having an output transistor 40 coupled to the light source drive signals and a threshold element 42 in the form of a diode applied to the control terminal of the output transistor 40 thereby to set an output voltage of the output transistor as said power supply.
  • the transistor is turned on and delivers current through a diode 44 to charge an output capacitor 46, until an output voltage is reached corresponding to the threshold element voltage less the base-emitter voltage drop.
  • This embodiment is a typical linear power supply. It should be understood that other types of linear power supply are also applicable.
  • FIG. 5 shows a second example based on a switch mode power supply circuit.
  • the circuit comprises a switching transistor, an inductor 52 and a diode 54, in this example forming a buck converter.
  • the output is provided across an output capacitor 56.
  • boost and buck boost converter are also applicable.
  • a third example may be based on a voltage line in parallel with a certain number of solid state light sources.
  • a forward voltage of the set number of solid state light sources then corresponds to a desired output voltage as the power supply.
  • two series 3.3V LEDs may be used to provide a 6.6V supply for the controller.
  • the resistor circuit comprises an electronic circuit used to generate a controllable output resistance in the view of the connected driver. There are various options for the resistor circuit, some of which are discussed below.
  • Figure 6 shows a first example in which the resistor circuit 26 comprises a set of resistor branches 60, 62, 64, each comprising a resistor 60a, 62a, 64a and a switch 60b, 62b, 64b in series.
  • the branches are in parallel.
  • the control circuit 24 is adapted to control the settings of the switches thereby defining the configuration of the resistor circuit.
  • Figure 7 shows a second example in which the resistor circuit comprises first and second terminals 70, 72 for connection to the driver, wherein the resistor circuit comprises a current sensor 74 for sensing the current flowing between the first and second terminals (based on the voltage across a sense resistor 75), and a voltage sensor 76 for sensing the voltage between the first and second terminals.
  • the control circuit 24 has a unit for calculating the equivalent resistance of the resistor circuit according to the sensed voltage and the sensed current.
  • the resistor circuit has a switching element 78 between the first and second terminals for controlling the equivalent resistance using the configuration information as well as the calculated equivalent resistance.
  • the switching element is a transistor which has its output resistance controlled in a dynamic way.
  • the controller 24 provides a desired resistance value 80 based on the current setting value as programmed into it, and a comparator 82 is used to compare this with a value generated by unit 84, to provide feedback control.
  • This approach is based on simulating the characteristics of a physical resistor.
  • the switching element 78 provides dynamic control of the current and voltage levels so that the equivalent resistor becomes equal to the expected physical resistor.
  • Unit 84 is a divider element whose function is to provide a value of voltage/current (i.e. resistance). In a digital method, this could be implemented by a microcontroller, so that the unit 84 would not be required as a separate component.
  • Figure 8 shows a third example in which the resistor circuit comprises first and second terminals 90, 92 for connection to the driver and for receiving a voltage, wherein the resistor circuit comprises a current sensor 94 for sensing the current flowing between the first and second terminals (based on the voltage across a sense resistor 95).
  • the control circuit comprises a current control unit for controlling the current through the resistor circuit using the configuration information as well as feedback of the sensed current. The current is controlled using a switching element in the form of transistor 96.
  • This provides a controllable current source, which is specifically the input required by the RSET3 interface.
  • the transistor is dynamically controlled to make the current is equal to that which a physical resistor would insert into the RSET3 port of the driver.
  • the module may be used with existing types of temperature overload protection.
  • a thermal component (negative temperature coefficient - NTC) may be connected to the NFC IC. In the event of high temperatures, the circuit will signal to the driver that the module is at too high temperature and the driver can dim or shut down.
  • temperature sensing may also be used to enable control of the lifetime of the module. Beyond a certain temperature, a lifetime of less than 50khrs is predicted. If the customer, building a luminaire using the module, wants to apply the module in a limited heat sink luminaire, the power (current) must be reduced to meet this temperature. Instead of performing extensive testing, the NFC chip may be programmed to a particular lifetime such as 50khr. The circuit can then internally compare a threshold value with the on-board thermal component, and if it exceeds the maximum temperature a lower drive current can be communicated to the driver.
  • the invention may be is used in a variety of lighting applications.
  • the lighting modules may be indoor point sources, down lighting units or spot lighting units.
  • the invention can also be used in linear LED applications (as used in offices), and also outdoor lighting for road and streets. In down lighting and office systems, often a well-defined flux is needed making an easy to implement flux setting highly desirable.
  • the invention has been described in connection with an LED lighting arrangement. However, it can be applied to a driver arrangement for other types of lighting technology. It can be applied to any driver which is adapted to communicate with an external sensing resistor for controlling the driver circuit configuration. For example, other solid state lighting technologies may be used.

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  • Circuit Arrangement For Electric Light Sources In General (AREA)
EP16166130.1A 2015-04-24 2016-04-20 Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage Withdrawn EP3086624A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP16166130.1A EP3086624A1 (fr) 2015-04-24 2016-04-20 Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IB2015077404 2015-04-24
EP15177862 2015-07-22
EP16166130.1A EP3086624A1 (fr) 2015-04-24 2016-04-20 Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage

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Publication Number Publication Date
EP3086624A1 true EP3086624A1 (fr) 2016-10-26

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EP16166130.1A Withdrawn EP3086624A1 (fr) 2015-04-24 2016-04-20 Module d'éclairage à l'état solide, circuit d'éclairage et procédés de commande d'éclairage

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EP (1) EP3086624A1 (fr)
RU (1) RU2656875C1 (fr)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
DE102017111953A1 (de) 2017-05-31 2018-12-06 Vossloh-Schwabe Lighting Solutions GmbH & Co. KG System zur Lichtstromregulierung eines Leuchtmoduls
JP2019146391A (ja) * 2018-02-22 2019-08-29 株式会社アイ・ライティング・システム 設定変更器
EP3541148A1 (fr) * 2018-03-14 2019-09-18 Siteco Beleuchtungstechnik GmbH Lampe paramétrable avec un module de del et un module de mémoire à fonction de communication en champ proche

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DE102013202282A1 (de) * 2013-02-13 2014-08-14 Continental Automotive Gmbh Lichtquelle und Verfahren zur Herstellung der Lichtquelle

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RU40568U1 (ru) * 2004-04-13 2004-09-10 Дыбушкин Анатолий Викторович Устройство автоматического регулирования освещения
US8217763B2 (en) * 2006-11-17 2012-07-10 Koninklijke Philips Electronics N.V. Lighting device for floors
ES2614894T3 (es) * 2011-11-14 2017-06-02 Philips Lighting Holding B.V. Sistema y método para controlar la tensión de un controlador de salida máxima de un dispositivo de iluminación de estado sólido
WO2013186655A2 (fr) * 2012-06-14 2013-12-19 Koninklijke Philips N.V. Commande d'éclairage à autorégulation pour commander des sources d'éclairage et unité d'éclairage comprenant une commande d'éclairage à autorégulation
JP6114546B2 (ja) * 2012-12-20 2017-04-12 ミネベアミツミ株式会社 Ｌｅｄ駆動装置及び照明器具
CN104333933B (zh) * 2013-07-22 2017-04-12 全汉企业股份有限公司 发光二极管驱动装置及应用其的发光二极管照明系统
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DE102013202282A1 (de) * 2013-02-13 2014-08-14 Continental Automotive Gmbh Lichtquelle und Verfahren zur Herstellung der Lichtquelle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017111953A1 (de) 2017-05-31 2018-12-06 Vossloh-Schwabe Lighting Solutions GmbH & Co. KG System zur Lichtstromregulierung eines Leuchtmoduls
JP2019146391A (ja) * 2018-02-22 2019-08-29 株式会社アイ・ライティング・システム 設定変更器
EP3541148A1 (fr) * 2018-03-14 2019-09-18 Siteco Beleuchtungstechnik GmbH Lampe paramétrable avec un module de del et un module de mémoire à fonction de communication en champ proche

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