EP1997353A2 - Dispositif lumineux - Google Patents

Dispositif lumineux

Info

Publication number
EP1997353A2
EP1997353A2 EP07710710A EP07710710A EP1997353A2 EP 1997353 A2 EP1997353 A2 EP 1997353A2 EP 07710710 A EP07710710 A EP 07710710A EP 07710710 A EP07710710 A EP 07710710A EP 1997353 A2 EP1997353 A2 EP 1997353A2
Authority
EP
European Patent Office
Prior art keywords
light
emitting elements
carrier
light unit
unit 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.)
Withdrawn
Application number
EP07710710A
Other languages
German (de)
English (en)
Other versions
EP1997353A4 (fr
Inventor
Kwong Man
Ion Toma
Edward Jordan
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.)
Koninklijke Philips NV
Original Assignee
TIR Systems Ltd
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 TIR Systems Ltd filed Critical TIR Systems Ltd
Publication of EP1997353A2 publication Critical patent/EP1997353A2/fr
Publication of EP1997353A4 publication Critical patent/EP1997353A4/fr
Withdrawn legal-status Critical Current

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]
    • H05B45/10—Controlling the intensity of the light
    • H05B45/14—Controlling the intensity of the light using electrical feedback from LEDs or from LED modules
    • 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]
    • 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
    • H05B45/12—Controlling the intensity 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
    • 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

Definitions

  • the present invention pertains to the field of lighting and in particular to a light unit designed for ease of replacement within a lighting device.
  • LEDs organic light-emitting diodes
  • LEDs can vary in production. For example, raw light output from a group of LED chips grown on the same wafer manufactured by the same equipment may have as much as about a 3:1 variation in their luminous flux output over the same wafer. This fact gives rise to a binning strategy which is commonly used in the industry, whereby LEDs are individually tested and binned into categories of luminous flux output that represent about 30% intervals. Likewise, forward voltage, dominant wavelength and beam spread may be other factors that are considered during the binning process.
  • chromaticity and luminous flux output of LEDs can depend on junction temperature, which can have undesirable effects on the correlated colour temperature (CCT) and more generally the chromaticity of the emitted light. LED junction temperature variations can also cause undesired effects in the spectral power distribution of the resultant output light. Variations injunction temperature not only can reduce the luminous flux output, but can also cause undesirable variations in the CCT of mixed light.
  • a control system associated with a LED based lighting device typically comprises calibration data regarding the LEDs within the lighting device. In this manner the control system is capable of adjusting the operation of the LEDs associated with the lighting device based on their respective predetermined emission characteristics.
  • the resulting light pattern after replacement of the LEDs can remain incorrect, unbalanced or undesired until the lighting device is recalibrated, which may entail waiting for a service technician.
  • United States Patent No. 6,806,659 describes a lighting apparatus comprising a control module and a light module, wherein the light module is interchangeable.
  • the control module comprises a switch, and microcontroller.
  • Memory which is contained within the microcontroller, is used for storing the level of intensity at which the LED(s) are driven. Therefore, upon replacement of a light module of this lighting apparatus, the control module would require recalibration to account for the emission characteristics of the LEDs associated with the new light module.
  • United States Patent No. 6,965,205 discloses a lighting system containing a system memory for controlling a processor, and discloses that the memory may contain calibration data associated with the control signals for driving the LEDs.
  • This memory is configured for use by the system as a whole, and therefore any calibration data relating to a specific LED must be input to the memory in an additional step if a LED is replaced. Therefore this system requires recalibration after the replacement of one or more LEDs.
  • United States Patent Application Publication No. 2006/0002110 describes lighting units which contain light sources such as LEDs.
  • the lighting units described may also optionally include data storage facilities, which may be used for storing calibration information.
  • the data storage facilities are configured to be accessible by the processors of the lighting units. This configuration of data storage facilities are provided for an entire light system, and therefore upon replacement of one or more light sources, new calibration data is to be input into the data storage facilities for use by the appropriate processor. Therefore this system also requires recalibration after the replacement of one or more light sources.
  • United States Patent Nos. 6,411,046 and 6,441,558 disclose luminaires in which information for the variation in colour coordinates as a function of temperature are stored in a memory coupled to the control unit. In this configuration of the luminaire, if one or more LEDs are replaced, the recalibration of the luminaire is required, wherein appropriate new calibration information is entered into the memory associated with the control unit.
  • An object of the present invention is to provide a light unit.
  • a light unit adapted for connection to a lighting device, the lighting device including a control system for controlling activation of one or more light-emitting elements, the control system adapted for connection to a source of power, the light unit comprising: one or more carriers; one or more light-emitting elements operatively coupled to one or more of the carriers, the one or more light-emitting elements for generating electromagnetic radiation; a memory device operatively coupled to one or more of the carriers, the memory device including information representative of operational characteristics of the one or more light- emitting elements, the memory device adapted for connection to the control system; wherein the control system provides control signals to the one or more light-emitting elements and wherein said control signals are dependent on the operational characteristics.
  • Figure 1 illustrates a light unit according to one embodiment of the present invention, wherein the light unit is operatively coupled to a control system of a lighting device.
  • light-emitting element is used to define any device that emits radiation in any region or combination of regions of the electromagnetic spectrum for example, the visible region, infrared and/or ultraviolet region, when activated by applying a potential difference across it or passing a current through it, for example. Therefore a light-emitting element can have monochromatic, quasi-monochromatic, polychromatic or broadband spectral emission characteristics. Examples of light- emitting elements include semiconductor, organic, or polymer/polymeric light-emitting diodes, optically pumped phosphor coated light-emitting diodes, optically pumped nano- crystal light-emitting diodes or other similar devices as would be readily understood by a worker skilled in the art.
  • the present invention provides a light unit that is interchangeable within a lighting device.
  • the light unit comprises a carrier to which one or more light-emitting elements are connected.
  • the light unit further comprises a memory device operatively coupled to the carrier, wherein the memory device includes information representative of the operational characteristics of the one or more light-emitting elements.
  • a control system associated with the lighting device can access the memory device to obtain operational characteristics of the one or more light-emitting elements associated with the carrier. In this manner, the operational characteristics of the light-emitting elements can be immediately available to the control system, without the need for calibration of the lighting device subsequent to the replacement or changing of the light unit with the lighting device.
  • Figure 1 illustrates a light unit 5 according to one embodiment of the present invention, wherein the light unit 5 is operatively coupled to the control system of a lighting device.
  • the memory device 10 and the one or more light-emitting elements 20 are mounted on a single carrier 60.
  • the memory device 10 is configured to carry the operational characteristics of the one or more light-emitting elements 20 mounted on the carrier 60.
  • the control system 40 of the lighting device to which the light unit 5 is operatively coupled accesses the memory device in order to extract or write 30 information relating to the operational characteristics of the one or more light-emitting elements 20 or other information on the memory device.
  • control system 40 can provide control signals 50 to the one or more light-emitting elements 20 in order that the one or more light emitting elements emit the desired electromagnetic radiation, for example the desired colour of light.
  • the control system 40 is adapted for connection to a source of power thereby enabling desired activation of the one or more light-emitting elements 20.
  • the memory device may comprise information relating to date of manufacture, date of calibration, manufacturer's reference information, serial numbers, model numbers, bin information of the light-emitting elements and the like.
  • operational characteristics can be updated according to the number of hours of operation of the one or more light-emitting elements associated with the light unit.
  • a record of operational history of the one or more light-emitting elements can be useful for the investigation of malfunctioning of the light-emitting elements or deterioration in operating parameters thereof which may provide a means for determining operating conditions under which the light-emitting elements may have the greatest lifetime.
  • the carrier provides a support mechanism for the one or more light-emitting elements and/or the memory device.
  • a single carrier provides a unitary support to both the one or more light-emitting elements and the memory device, which can provide a means for ease of changability of the light unit.
  • a carrier is used as a support mechanism for the one or more light-emitting elements, and a second carrier is used as the support mechanism for the memory device.
  • a particular carrier is used as a support mechanism for a particular format of one or more light-emitting elements. For example, red light- emitting elements are operatively coupled to one carrier, green light-emitting elements are operatively coupled to a second carrier and blue light-emitting elements are operatively coupled to a third carrier.
  • the light unit when the light unit comprises multiple carriers, these multiple carriers can be structurally connected by frame system, in order to produce a unitary carrier component.
  • the configuration of the frame system can be dependent on the configuration of the light unit, the lighting device and the number of carriers within the light unit.
  • the carrier is made from a standard printed circuit board (PCB) type material, for example, an FR4 compound material or other PCB format as would be readily understood by a worker skilled in the art.
  • PCB printed circuit board
  • the carrier is made of a thermally conductive material, for example, ceramic such as AlN, Al 2 O 3 , BeO, metal core printed circuit board (MCPCB), direct bond copper (DBC), CVD diamond or other suitable thermally conductive material as would be known to a worker skilled in the art.
  • the substrate can be fabricated from a metal, for example Olin 194, Cu, CuW or any other thermally conductive alloy.
  • the substrate may be coated with a dielectric for electrical isolation of one or more light-emitting elements, and/or electrical contacts.
  • electrical traces can be deposited onto a dielectric coated substrate to allow electrical connectivity.
  • the carrier can be designed such that traces provide electrical connections from the one or more light-emitting elements and the memory device to the control system associated with the lighting device.
  • the traces are formed on one side of the carrier.
  • the carrier can have electrical connections or traces on both sides thereof. This configuration of the traces can be based on the design of the light-emitting element, the memory device and/or the lighting device.
  • the carrier can be designed to comprise multiple electrically conducting planes in order to reduce the size of the carrier and potentially increase the potential density of devices, for example light-emitting elements, thereon due to the reduction of circuit traces for example.
  • the carrier can comprise one or more connectors, plugs or interconnectors which provide for the operative connection between the light unit and the lighting device.
  • a worker skilled in the art would readily understand configuration of plugs which would provide the desired operative connection between the carrier and the lighting device.
  • the one or more carriers are electrically configured to operatively connect to the control system of the lighting device which would be readily understood by a worker skilled in the art.
  • the carrier can be formed into a variety of desired shapes, for example flat, curved, square, circular, elliptical or other desired shape or other desired shape as would be readily understood.
  • the configuration and shape of the carrier can be dependent on the design of the lighting device, which can determine the shape and size restrictions that may be placed on the carrier.
  • the memory device is operatively coupled to a carrier and provides a means for the storing of operational characteristics of the one or more light-emitting elements with which it is associated. In this manner, upon the operational coupling of the light unit to the lighting device, the operational characteristics of each of the one or more light- emitting elements of the lighting unit, are accessible to the control system of the lighting device.
  • the operational characteristics of the one or more light-emitting elements can be representative of the wavelength and intensity emission spectrum of the one or more light-emitting elements.
  • the operational characteristics are further representative of the temperature dependence of the wavelength and intensity emission spectrum of the one or more light-emitting elements. As would be known to a worker skilled in the art, different colours of light-emitting elements have varying temperature dependencies and therefore appropriate operational characteristics are required to represent this varying dependency.
  • the operational characteristics are polynomial expressions or algorithms for the evaluation of the wavelength and intensity emission spectrum of the one or more light-emitting elements.
  • the operational characteristics represent the peak wavelength emission, peak intensity emission and spectral line width of the one or more light- emitting elements as a function of operational temperature of the one or more light- emitting elements.
  • the representation of the spectral output for each of the one or more light-emitting elements can be represented by polynomial expression with predetermined parameters.
  • the operational characteristics stored in the memory device can be linear or exponential temperature dependent expressions that represent the predetermined parameters of the suitable numerical approximation for the one or more light-emitting elements.
  • the operational characteristics are configured in a tabular format, for example in a look-up table configuration.
  • the control system can be a computing device or microcontroller having a central processing unit (CPU) and peripheral input/output devices (such as A/D or D/ A converters) to monitor parameters from one or more peripheral devices that are operatively coupled to the control system, for example a temperature determination mechanism.
  • the controller can optionally include one or more storage media collectively referred to herein as "memory".
  • the memory can be volatile and nonvolatile computer memory such as RAM, PROM, EPROM, and EEPROM, flash, compact disks, optical disks, or the like, wherein control programs (such as software, microcode or firmware) for monitoring or controlling the one or more light-emitting elements and peripheral devices coupled to the control system are stored and executed by the CPU.
  • the memory device can be configured as electronically erasable programmable read only memory (EEPROM), electronically programmable read only memory (EPROM), non-volatile random access memory (NVRAM), read-only memory (ROM), programmable read-only memory (PROM), flash memory or other non-volatile memory for storing data as would be readily understood by a worker skilled in the art.
  • EEPROM electronically erasable programmable read only memory
  • EPROM electronically programmable read only memory
  • NVRAM non-volatile random access memory
  • ROM read-only memory
  • PROM programmable read-only memory
  • flash memory or other non-volatile memory for storing data as would be readily understood by a worker skilled in the art.
  • the memory device can be configured as a dip-switch package for storing the operational characteristics.
  • the dip-switch package can be set during the calibration stage of the light-emitting elements, for example during the manufacture of the light unit.
  • the memory device is configured as an addressable device.
  • the address of the memory device can be stored in a dip-switch package, or can be stored within the memory device for example defined by firmware thereon. Other suitable methods for defining the address of a memory device would be readily understood by a worker skilled in the art.

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

L'invention concerne un dispositif lumineux interchangeable à l'intérieur d'un dispositif d'éclairage. Le dispositif lumineux comprend un support auquel un ou plusieurs éléments émettant de la lumière sont connectés. Un dispositif de mémoire est en outre couplé fonctionnel au support, le dispositif de mémoire comprenant des informations représentatives des caractéristiques fonctionnelles d'un ou plusieurs éléments émettant de la lumière associés au support. Lors du couplage fonctionnel du dispositif lumineux avec le dispositif d'éclairage, un système de commande associé au dispositif d'éclairage permet d'accéder au dispositif de mémoire afin d'obtenir des caractéristiques fonctionnelles du ou des éléments émettant de la lumière associés au support. De cette manière, les caractéristiques fonctionnelles des éléments émettant de la lumière peuvent être immédiatement disponibles au système de commande, sans nécessiter de calibrage du dispositif d'éclairage ultérieur au remplacement ou au changement du dispositif lumineux par le dispositif d'éclairage.
EP07710710A 2006-03-13 2007-03-08 Dispositif lumineux Withdrawn EP1997353A4 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US78190606P 2006-03-13 2006-03-13
PCT/CA2007/000376 WO2007104137A2 (fr) 2006-03-13 2007-03-08 Dispositif lumineux

Publications (2)

Publication Number Publication Date
EP1997353A2 true EP1997353A2 (fr) 2008-12-03
EP1997353A4 EP1997353A4 (fr) 2011-01-05

Family

ID=38509825

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07710710A Withdrawn EP1997353A4 (fr) 2006-03-13 2007-03-08 Dispositif lumineux

Country Status (6)

Country Link
EP (1) EP1997353A4 (fr)
JP (1) JP2009529769A (fr)
KR (1) KR20090008220A (fr)
CN (1) CN101406109B (fr)
CA (1) CA2643114A1 (fr)
WO (1) WO2007104137A2 (fr)

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DE102007031801A1 (de) * 2007-07-07 2009-01-08 Bayerische Motoren Werke Aktiengesellschaft Kraftfahrzeugleuchtensystem
WO2009117681A1 (fr) * 2008-03-20 2009-09-24 Illumitron International Dispositif d'éclairage et fixation
JP5313711B2 (ja) * 2009-01-29 2013-10-09 株式会社ミツトヨ 光学式測定装置
FR2944637B1 (fr) * 2009-04-21 2011-05-06 Peugeot Citroen Automobiles Sa Dispositif et procede de gestion du fonctionnement d'organe(s) electrique(s) remplace(s) dans un systeme
DE102010009718A1 (de) * 2010-03-01 2011-09-01 Osram Opto Semiconductors Gmbh Verfahren zur Gruppierung oder Kennzeichnung von Lumineszenzdiodenbauelementen und Lumineszenzdiodenbauelement
DE102010031242B4 (de) 2010-03-19 2023-02-23 Tridonic Ag LED-Beleuchtungssystem mit Betriebsdatenspeicher
NL2005929C2 (en) * 2010-12-28 2012-07-02 Eldolab Holding Bv Led driver, lighting device and led based lighting application.
DE102011103907A1 (de) * 2011-02-17 2012-08-23 Siteco Beleuchtungstechnik Gmbh LED-Leuchte
EP2581311B1 (fr) * 2011-10-10 2013-12-11 Hella KGaA Hueck & Co Éclairage par DEL de champ d'aviation
DE102013212895A1 (de) * 2013-07-02 2015-01-08 Lemförder Electronic GmbH Beleuchtungsvorrichtung
WO2016107632A1 (fr) * 2014-12-29 2016-07-07 Fagerhults Belysning Ab Procédé de commande de l'émission lumineuse d'un luminaire par un terminal de commande
CN112954860A (zh) * 2019-12-10 2021-06-11 群燿光学股份有限公司 控制装置
CN114992609A (zh) * 2022-06-16 2022-09-02 深圳市思坎普科技有限公司 一种泛光灯

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EP0702347A1 (fr) * 1994-07-18 1996-03-20 Kabushiki Kaisha Toshiba Dispositif d'affichage à matrice de points à diodes électroluminescentes et méthode pour le réglage de sa luminosité
EP0914024A1 (fr) * 1997-11-03 1999-05-06 Mannesmann VDO Aktiengesellschaft Dispositif pour commander des diodes électroluminescentes
WO2001045471A1 (fr) * 1999-12-14 2001-06-21 Efos Inc. Lampe intelligente
EP1363451A1 (fr) * 2002-05-16 2003-11-19 NEC Viewtechnology, Ltd. Projecteur et méthode de traitement de l'information relative à la lampe utilisée pour ce projecteur
DE202004006292U1 (de) * 2004-04-21 2004-07-22 Knobel Ag Lichttechnische Komponenten Kennung für LED-Module
EP1696711A2 (fr) * 2005-02-25 2006-08-30 ERCO Leuchten GmbH Luminaire

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JPH11266049A (ja) * 1998-03-17 1999-09-28 Fujitsu Ltd 発光素子駆動装置
JPH11274630A (ja) * 1998-03-20 1999-10-08 Fujitsu Ltd 発光素子制御装置
JP4878096B2 (ja) * 2001-09-04 2012-02-15 キヤノン株式会社 発光素子の駆動回路
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EP0702347A1 (fr) * 1994-07-18 1996-03-20 Kabushiki Kaisha Toshiba Dispositif d'affichage à matrice de points à diodes électroluminescentes et méthode pour le réglage de sa luminosité
EP0914024A1 (fr) * 1997-11-03 1999-05-06 Mannesmann VDO Aktiengesellschaft Dispositif pour commander des diodes électroluminescentes
WO2001045471A1 (fr) * 1999-12-14 2001-06-21 Efos Inc. Lampe intelligente
EP1363451A1 (fr) * 2002-05-16 2003-11-19 NEC Viewtechnology, Ltd. Projecteur et méthode de traitement de l'information relative à la lampe utilisée pour ce projecteur
DE202004006292U1 (de) * 2004-04-21 2004-07-22 Knobel Ag Lichttechnische Komponenten Kennung für LED-Module
EP1696711A2 (fr) * 2005-02-25 2006-08-30 ERCO Leuchten GmbH Luminaire

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Title
See also references of WO2007104137A2 *

Also Published As

Publication number Publication date
CN101406109A (zh) 2009-04-08
CN101406109B (zh) 2012-07-18
CA2643114A1 (fr) 2007-09-20
JP2009529769A (ja) 2009-08-20
WO2007104137A2 (fr) 2007-09-20
KR20090008220A (ko) 2009-01-21
WO2007104137A3 (fr) 2007-11-01
EP1997353A4 (fr) 2011-01-05

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