WO2009115976A1 - Système d'éclairage comprenant un élément luminescent avec un dissipateur thermique - Google Patents

Système d'éclairage comprenant un élément luminescent avec un dissipateur thermique Download PDF

Info

Publication number
WO2009115976A1
WO2009115976A1 PCT/IB2009/051075 IB2009051075W WO2009115976A1 WO 2009115976 A1 WO2009115976 A1 WO 2009115976A1 IB 2009051075 W IB2009051075 W IB 2009051075W WO 2009115976 A1 WO2009115976 A1 WO 2009115976A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
sub
light source
illumination system
luminescent element
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.)
Ceased
Application number
PCT/IB2009/051075
Other languages
English (en)
Inventor
Marcellinus P.C.M. Krijn
Adriaan Valster
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
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Publication of WO2009115976A1 publication Critical patent/WO2009115976A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0095—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with ultraviolet radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V9/00—Elements for modifying spectral properties, polarisation or intensity of the light emitted, e.g. filters
    • F21V9/30—Elements containing photoluminescent material distinct from or spaced from the light source
    • F21V9/32—Elements containing photoluminescent material distinct from or spaced from the light source characterised by the arrangement of the photoluminescent material
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0004—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed
    • G02B19/0028—Condensers, e.g. light collectors or similar non-imaging optics characterised by the optical means employed refractive and reflective surfaces, e.g. non-imaging catadioptric systems
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B19/00—Condensers, e.g. light collectors or similar non-imaging optics
    • G02B19/0033—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use
    • G02B19/0047—Condensers, e.g. light collectors or similar non-imaging optics characterised by the use for use with a light source
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/005—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping
    • H01S5/0087—Optical components external to the laser cavity, specially adapted therefor, e.g. for homogenisation or merging of the beams or for manipulating laser pulses, e.g. pulse shaping for illuminating phosphorescent or fluorescent materials, e.g. using optical arrangements specifically adapted for guiding or shaping laser beams illuminating these materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/02—Structural details or components not essential to laser action
    • H01S5/022—Mountings; Housings
    • H01S5/0225—Out-coupling of light
    • H01S5/02251—Out-coupling of light using optical fibres
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
    • H01S5/00—Semiconductor lasers
    • H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
    • H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar

Definitions

  • the invention relates to the field of illumination systems, especially to illumination systems which provide white light by conversion of laser light in a luminescent element.
  • LEDs Light Emitting Diodes
  • Technological breakthroughs in high-power LEDs have opened the door to new lighting concepts driven by miniaturization, lifetime, efficiency and sustainability.
  • lasers are their much higher brightness.
  • Semiconductor lasers have started to become available in output powers of several Watts, thus enabling high lumen output. Taking this into consideration, it is expected that lasers are the ultimate light source for several applications and, thus, it can be expected that the next generation of solid-state light sources is based on semiconductor lasers.
  • the extremely high brightness of a laser is a disadvantage when applied to lighting: lasers usually deliver a divergent beam originating from an extremely small (virtual) spot or a pencil-shaped beam. For lighting purposes, however, the beam has to be reshaped into a distribution that depends on the application. For automotive front lights or UHP-lamp replacements in projection displays, the solid angle the light is emitted into has to be greatly enlarged without spoiling the brightness too much. In other words, the properties of the source should resemble those of the filament of an incandescent lamp or the arc of a gas discharge lamp. The same holds for spotlights. On the other hand, the resulting brightness should not be too high since this would result in problems related to eye-safety. Also the annoying and persistent problem of speckle should be avoided.
  • a phosphor-based illumination system including a light source, a light guide including an output surface, emissive material positioned between the light source and the output surface of the light guide, and an interference reflector positioned between the emissive material and the output surface of the light guide is known.
  • the light source emits light having a first wavelength.
  • the emissive material emits light of a wavelength band comprising a second wavelength which is different from the first wavelength when illuminated with light coming from the light source. This way, a white light source can be achieved.
  • this object is achieved by an illumination system, with a light source emitting light of at least a first wavelength, and a luminescent element which is irradiated with the light emitted by the light source and which emits light of at least a second wavelength which is different from the first wavelength, wherein the luminescent element is comprised of a plurality of sub-elements which are each in heat conducting contact with a heat sink.
  • the luminescent element into a plurality of sub-elements, which makes it possible to effectively dissipate heat generated in the sub-elements to a heat sink.
  • the sub-elements may be separated from each other. However, it is also possible that the sub-elements are in contact with each other. In the latter case, the sub-elements can be shaped as a mesh where the holes in the mesh are filled with a heat conducting material for dissipating the heat to the heat sink.
  • Partitioning the luminescent element into a plurality of sub-elements which are each in heat conducting contact with a heat sink is advantageous since by absorbing the light emitted by the light source, the luminescent element heats up. This is due to an effect called “Stokes shift":
  • the luminescent element e.g. made of phosphor, converts the light emitted by the light source, e.g. blue or near-UV photons produced by a laser, into less energetic photons having a longer wavelength. The energy difference is converted into heat. This causes the luminescent element to heat up and to saturate. This means that at some instant, irradiating the luminescent element with more light from the light source does not result in more converted light.
  • a luminescent element made of phosphor can become very hot, i.e. above 130 0 C, the melting point of plastics such as PMMA.
  • the sub-elements can be connected to the heat sink in different ways.
  • the sub-elements are each surrounded by a heat-conducting material which is in contact with the heat sink.
  • this heat-conducting material can also be used to hold the material of the sub- elements of the luminescent element.
  • the inner side of the conducting material which faces the sub-elements is reflecting. The inner side can be specularly or diffusely reflective, in the latter case being a scatterer.
  • a tapered funnel with reflective side walls is provided for collecting and redirecting light emitted by the luminescent element.
  • the sub-elements are each provided with a collimator for collecting and redirecting the emitted light back to a main emittance direction.
  • At least one of the sub-elements is, and preferably all sub-elements are, provided with a pinhole mirror arrangement with a pinhole and a light reflective side facing away from the light source, and a focusing arrangement for focusing light emitted by the light source through the pinhole onto the respective sub-element.
  • the pinhole mirror arrangement essentially acts as a mirror. This means that most of the light which reaches the pinhole mirror arrangement from the side of the luminescent element is reflected back due to the reflective side facing away from the light source. Only the least part of the light which reaches the pinhole mirror arrangement from the side of the luminescent element manages to get through the pinholes and, thus, is lost. Accordingly, a high brightness of the light output by the luminescent element is achieved.
  • the sub-elements can all be made of the same material.
  • at least two sub- elements comprise different luminescent materials which each emit light with different wavelengths when irradiated with the same light.
  • different phosphors are used instead of a "yellow" phosphor as the material for sub-elements of the luminescent element.
  • a "red” phosphor, a "green” phosphor and a transparent scattering medium transmitting the light coming from the light source are used.
  • the advantage is that a higher color-rendering-index can be obtained than when use is made of only one material for all the sub-elements.
  • the light source comprises at least two different sub-light sources which emit light of different wavelengths, wherein the light from each of the different sub-light sources is directed to a different sub-element.
  • the light source comprises at least two different sub-light sources which emit light of different wavelengths, wherein the light from the sub-light sources is directed onto at least one common sub-element.
  • a dichroic filter is provided in the optical path of the light emitted by the light source between the light source and the luminescent element, the dichroic filter being transmissive for the light of the first wavelength, i.e. the light from the light source, but being reflective for the light of the second wavelength, i.e. the light from the luminescent element, and a collimator arrangement is provided which is adapted for collecting and redirecting light emitted from the luminescent element in such a way that the collected light is redirected onto the dichroic filter.
  • this function of the dichroic filter is further improved:
  • the transmission and reflection properties of a dichroic filter are dependent on the angle of incidence of the light. Accordingly, this arrangement makes it possible to provide for an essentially perpendicular angle of incidence, yielding the highest reflection ratio.
  • the collimator arrangement can be designed in different ways.
  • the collimator arrangement comprises at least one tapered funnel with reflective sidewalls, the tapered funnel being provided on the side of the luminescent element facing the dichroic filter and corresponding to one sub-element.
  • each of the sub-elements of the luminescent element is provided with such a tapered funnel.
  • an illumination system with a light source emitting light of at least a first wavelength, a luminescent element which is irradiated with the light emitted by the light source and which emits light of at least a second wavelength which is different from the first wavelength, a dichroic filter which is provided between the light source and the luminescent element in the optical path of the light emitted by the light source, and a collimator arrangement, wherein the dichroic filter is transmissive for the light of the first wavelength but is reflective for the light of the second wavelength, and wherein the collimator arrangement is adapted for collecting and redirecting light emitted from the luminescent element in such a way that the collected light is redirected onto the dichroic filter.
  • the function of the dichroic filter is further improved: Due to the collimator arrangement an essentially perpendicular angle of incidence on the dichroic filter is achieved, thus providing the best reflection ratio.
  • the collimator arrangement is adapted for redirecting the collected light in a predefined range of angles onto the dichroic filter.
  • the incidence angle deviates less than 30°, more preferably less than 20°, and most preferably less than 10° from a perpendicular incidence.
  • the luminescent element comprises a luminescent ceramic, preferably comprising phosphor.
  • the light from the light source can be directed freely onto the luminescent element.
  • an optical fiber is provided for guiding the light generated by the light source to the luminescent element.
  • the laser is geometrically separated from the phosphor conversion. The advantage is that in this way the generation of the light by the light source and, thus the generation of heat, is decoupled from the actual light source, i.e. the luminescent element which acts as conversion system.
  • the light source is a laser, especially a blue or near-UV diode laser.
  • Fig. 1 shows an illumination system according to a first embodiment of the invention
  • Fig. 2 shows an alternative layout according to a second embodiment of the invention
  • Fig. 3 shows a third embodiment of the invention
  • Fig. 4 shows a fourth embodiment of the invention
  • Fig. 5 shows a fifth embodiment of the invention
  • Fig. 6 shows a sixth embodiment of the invention
  • Fig. 7 shows a seventh embodiment of the invention
  • Fig. 8 shows an eighth embodiment of the invention
  • Fig. 9 shows a ninth embodiment of the invention.
  • Fig. 10 shows a tenth embodiment of the invention.
  • a light source 1 which is a blue diode laser
  • a luminescent element 2 which is a thin ceramic- like platelet of phosphor which measures 1 mm x 1 mm x 0.13 mm.
  • the luminescent element 2 converts the blue laser light into a broad band of wavelengths in the yellow part of the spectrum. Most of the blue light is converted by the luminescent element 2 into yellow. Some of the blue light is transmitted by the luminescent element 2.
  • the ratio of converted and transmitted blue light is chosen such that their combination results in white light.
  • Half of the yellow light generated travels in the wrong direction, i.e. is directed back towards the light source 1. According to the first preferred embodiment of the invention, this light is redirected in the following manner:
  • a collimator arrangement 3 is used which in this case is a so-called concentric parabolic concentrator (CPC) as shown in detail in Fig. 1 , in order to collimate the light directed back to the light source 1.
  • CPC concentric parabolic concentrator
  • a dichroic filter 4 is located at the exit of the collimator 3.
  • This dichroic filter 4 is a multilayer stack of thin dielectric layers, designed such as to transmit the blue part of the spectrum and reflect the complementary part, including yellow. In this manner, the dichroic filter 4 reflects the yellow light and sends it back towards the luminescent element 2.
  • the collimator is advantageous in that it ensures that the yellow light hits the dichroic filter 4 nearly perpendicularly:
  • the behavior of dichroic filters in general is very angular-dependant; the angular range of the rays hitting the dichroic filter 4 should therefore be limited to a small range around a perpendicular incidence. In this manner, the light originally sent into the wrong direction is redirected, thereby improving the efficiency by a factor of almost two.
  • FIG. 2 An alternative layout according to a second embodiment of the invention is shown in Fig. 2. It is advantageous that the phosphors of the luminescent element 2 are cooled to avoid thermal quenching, i.e. saturation due to overheating. To this end, the total volume of phosphor is divided into sub-elements 5. Each sub-element is surrounded by a heat-conducting material 6, e.g. a metal such as copper, gold, diamond, graphite, or ceramic that is heat-conducting and opaque or optically transparent. The heat accumulating in the heat-conducting material 6 is guided to a heat sink 7. The laser- light is guided to each sub-element of phosphor by a tapered funnel 8 with reflecting sidewalls 9.
  • a heat-conducting material 6 e.g. a metal such as copper, gold, diamond, graphite, or ceramic that is heat-conducting and opaque or optically transparent.
  • the heat accumulating in the heat-conducting material 6 is guided to a heat
  • tapered funnels 8 collimate the phosphor-converted yellow light going back in the direction of the light source 1. Again a dichroic filter 4 is used to redirect this yellow light.
  • the heat-conducting material 6 surrounding the phosphors and holding it in place may be specularly reflecting or diffusely reflecting, e.g. a scatterer.
  • Fig. 3 Another embodiment of the invention is shown in Fig. 3.
  • the sub- elements 5 of phosphor are located at the end of the tapered funnel 8.
  • the geometry of the surroundings of the phosphor can be straight as can be seen from Fig. 2, or tapered and funnel-shaped as can be seen from Fig. 3. Further, other different shapes are possible too, giving more design freedom.
  • Fig. 4 demonstrating that also at the exit side of the sub-elements 5 of phosphor there is a tapered funnel 10 with reflective side walls 11.
  • the tapered funnel 10 at the exit collimates the light and seamlessly couples the light of different sub-elements 5 of phosphors. In other words, the light leaving the illumination system as a whole is collimated and has a homogeneous emission pattern.
  • FIG. 5 Another embodiment of the invention is shown in Fig. 5.
  • a pinhole mirror arrangement 15 which comprises a plurality of lenses 21, each corresponding to one respective sub- element 5, the laser light is focused through pinholes 13 in a mirror 14 onto the sub- elements 5 of phosphor. In this manner, all the blue light is directed onto the phosphor. However, most of the phosphor-converted yellow light going backwards will be reflected by the reflective side 12 of the pinhole mirror arrangement 15 and, thus, only a small fraction will escape through the pinhole 13.
  • Fig. 6 depicts yet another embodiment of the invention.
  • a "yellow” phosphor different phosphors are used.
  • the advantage is that a higher color-rendering-index can be obtained than when only a "yellow” phosphor is used.
  • the sub-elements, i.e. the phosphors 16, 17 and the transparent scattering medium 18 are in optical contact with elements 41, 42, 43 of a transparent medium with, preferably, a high index of refraction. Further, it is preferred that this medium is a transparent heat-conducting ceramic.
  • this extra transparent medium is that it is easier for the light generated inside the phosphors 16, 17 to escape towards a medium with a high index of refraction than it is to escape towards air.
  • this transparent medium has a convex shape to ensure that most of the light leaves this medium at near normal angles with respect to its surface. In this case the chance of being reflected back is lowest.
  • the second purpose of this extra medium is to conduct heat away from the sub-elements.
  • such elements 41, 42, 43 can also be provided for embodiments of the invention other than those shown in the other Figures.
  • Fig. 7 and 8 show further embodiments of the invention.
  • a different sub-light source 22, 23, 24, i.e. a different laser is used for each sub-element 5 of phosphor .
  • different types of phosphor 25, 26, 27 are used for the respective sub-elements 5 in such a way that each phosphor 25, 26, 27 is illuminated by a laser 28, 29, 30 with an optimum pump wavelength.
  • An optimum pump wavelength for each phosphor 25, 26, 27 is advantageous since this is the most efficient way of producing light and at the same time minimizes heating of the phosphors 25, 26, 27.
  • the color can be tuned by tuning the output of the individual lasers 28, 29, 30.
  • Yet another embodiment is shown in Fig. 9.
  • Each sub-element 5 of phosphor is illuminated by two different lasers 31, 32 and, thus with different pump wavelengths.
  • the ratio of the output of the two beams from laser 31 and laser 32 the color temperature of the resulting phosphor-converted light can be tuned.
  • the light source 1 is geometrically separated from the phosphor conversion.
  • the laser light is guided towards the phosphor conversion system by means of a fibre 19.
  • the advantage is that in this way the generation of laser light and heat is decoupled from the actual light source, i.e. the phosphor conversion system.
  • the light sources based on phosphors that convert the light from blue or near- UV pump lasers, have the following characteristics:
  • the light converted by the phosphors and going in the wrong direction, i.e. backwards is redirected, thereby almost doubling the brightness.
  • an entrance mirror with a pinhole or a tapered funnel the light converted by the phosphors and going in the wrong direction, i.e. backwards, is redirected, thereby almost doubling the brightness.
  • an array of sub-light-sources, i.e. the sub-elements of the luminescent element are provided with a collimator at the exit and seamlessly combined into one light source. Heat is conducted away from the phosphor by using small sub-elements of phosphor in combination with a heat conductor. Combining different pump lasers and different phosphors, a color-adjustable or color-temperature-adjustable light source is obtained by adjusting the relative power of the different pump lasers.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

L'invention porte sur un système d'éclairage, ayant une source de lumière (1) émettant de la lumière d'au moins une première longueur d'onde, et un élément luminescent (2) qui est irradié par la lumière émise par la source de lumière (1) et qui émet de la lumière d'au moins une seconde longueur d'onde qui est différente de la première longueur d'onde, l'élément luminescent (2) étant composé d'une pluralité de sous-éléments (5) qui sont chacun en contact conduisant la chaleur avec un dissipateur thermique (7). De cette façon, un système d'éclairage est proposé, lequel peut être utilisé en tant que source de lumière blanche avec une brillance élevée et une absence de tache.
PCT/IB2009/051075 2008-03-20 2009-03-16 Système d'éclairage comprenant un élément luminescent avec un dissipateur thermique Ceased WO2009115976A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP08102815.1 2008-03-20
EP08102815 2008-03-20

Publications (1)

Publication Number Publication Date
WO2009115976A1 true WO2009115976A1 (fr) 2009-09-24

Family

ID=40790907

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/051075 Ceased WO2009115976A1 (fr) 2008-03-20 2009-03-16 Système d'éclairage comprenant un élément luminescent avec un dissipateur thermique

Country Status (1)

Country Link
WO (1) WO2009115976A1 (fr)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2477569A (en) * 2010-02-09 2011-08-10 Sharp Kk Lamp having a phosphor.
DE102012005654A1 (de) 2011-10-25 2013-04-25 Schott Ag Optischer Konverter für hohe Leuchtdichten
AT512589A1 (de) * 2012-03-12 2013-09-15 Zizala Lichtsysteme Gmbh Lichtleitelement für einen Laser-Fahrzeugscheinwerfer sowie Fahrzeugscheinwerfer
EP2518838A3 (fr) * 2011-04-28 2014-01-22 Sharp Kabushiki Kaisha Unité de projection de lumière et dispositif de projection de lumière
JP2014022084A (ja) * 2012-07-13 2014-02-03 Koito Mfg Co Ltd 車両用灯具
DE102013013296A1 (de) 2013-08-12 2015-02-12 Schott Ag Konverter-Kühlkörperverbund mit metallischer Lotverbindung
EP2733753A4 (fr) * 2011-07-14 2015-11-25 Koito Mfg Co Ltd Module électroluminescent
DE102014107345A1 (de) * 2014-05-26 2015-11-26 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
US20150345728A1 (en) 2013-02-18 2015-12-03 Koito Manufacturing Co., Ltd. Automotive lamp
EP2985524A1 (fr) * 2014-08-12 2016-02-17 Zizala Lichtsysteme GmbH Phase pour vehicules automobiles dote d'unite laser
EP3021041A1 (fr) * 2012-03-12 2016-05-18 Zizala Lichtsysteme GmbH Module d'éclairage pour phare de véhicule
WO2016087076A1 (fr) * 2014-12-02 2016-06-09 Robert Bosch Gmbh Dispositif d'éclairage pour un véhicule, système d'éclairage à deux dispositifs d'éclairage et procédé pour faire fonctionner le système d'éclairage
EP3065187A1 (fr) * 2015-03-05 2016-09-07 Christie Digital Systems USA, Inc. Réseau de matériau de conversion de longueur d'onde
DE102015113562A1 (de) 2015-08-17 2017-02-23 Schott Ag Konverter-Kühlkörperverbund mit metallischer Lotverbindung
AT517693B1 (de) * 2015-11-11 2017-04-15 Zkw Group Gmbh Konverter für Leuchtvorrichtungen
CN107076388A (zh) * 2014-11-25 2017-08-18 罗伯特·博世有限公司 具有射束转向装置和发光物质的探照灯模块
WO2017157705A1 (fr) * 2016-03-15 2017-09-21 Philips Lighting Holding B.V. Dispositif électroluminescent
US10374137B2 (en) * 2014-03-11 2019-08-06 Osram Gmbh Light converter assemblies with enhanced heat dissipation
US10698150B2 (en) 2016-03-15 2020-06-30 Signify Holding B.V. Compound parabolic collimator array for high intensity lighting
US10900651B2 (en) 2015-08-17 2021-01-26 Schott Ag Method for aligning a light spot produced on an optical converter, device comprising a light spot and use thereof, and converter-cooling body assembly with metallic solder connection
WO2023057312A1 (fr) * 2021-10-08 2023-04-13 Ams-Osram International Gmbh Élément convertisseur optoélectronique, dispositif semi-conducteur optoélectronique et procédé de fabrication d'un composant optoélectronique

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646210A (en) * 1984-06-20 1987-02-24 Donnelly Corporation Vehicular mirror and light assembly
US6350041B1 (en) * 1999-12-03 2002-02-26 Cree Lighting Company High output radial dispersing lamp using a solid state light source
US20050270775A1 (en) * 2004-06-04 2005-12-08 Lumileds Lighting U.S., Llc Remote wavelength conversion in an illumination device
US20060002101A1 (en) * 2004-06-30 2006-01-05 Wheatley John A Phosphor based illumination system having a long pass reflector and method of making same
WO2008018002A2 (fr) * 2006-08-09 2008-02-14 Koninklijke Philips Electronics N.V. Dispositif d'éclairage avec dissipateur thermique maintenant latéralement un élément de conversion de longueur d'ondes

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4646210A (en) * 1984-06-20 1987-02-24 Donnelly Corporation Vehicular mirror and light assembly
US6350041B1 (en) * 1999-12-03 2002-02-26 Cree Lighting Company High output radial dispersing lamp using a solid state light source
US20050270775A1 (en) * 2004-06-04 2005-12-08 Lumileds Lighting U.S., Llc Remote wavelength conversion in an illumination device
US20060002101A1 (en) * 2004-06-30 2006-01-05 Wheatley John A Phosphor based illumination system having a long pass reflector and method of making same
WO2008018002A2 (fr) * 2006-08-09 2008-02-14 Koninklijke Philips Electronics N.V. Dispositif d'éclairage avec dissipateur thermique maintenant latéralement un élément de conversion de longueur d'ondes

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2477569A (en) * 2010-02-09 2011-08-10 Sharp Kk Lamp having a phosphor.
US8919977B2 (en) 2010-02-09 2014-12-30 Sharp Kabushiki Kaisha Lamp comprising a phosphor, radiation source, optical system and heatsink
EP2518838A3 (fr) * 2011-04-28 2014-01-22 Sharp Kabushiki Kaisha Unité de projection de lumière et dispositif de projection de lumière
US8911128B2 (en) 2011-04-28 2014-12-16 Sharp Kabushiki Kaisha Light projection unit and light projection device
EP2733753A4 (fr) * 2011-07-14 2015-11-25 Koito Mfg Co Ltd Module électroluminescent
US9349926B2 (en) 2011-07-14 2016-05-24 Koito Manufacturing Co., Ltd. Light emitting module
DE102012005654A1 (de) 2011-10-25 2013-04-25 Schott Ag Optischer Konverter für hohe Leuchtdichten
WO2013060731A2 (fr) 2011-10-25 2013-05-02 Schott Ag Convertisseur optique pour des luminances élevées
US9738828B2 (en) 2011-10-25 2017-08-22 Schott Ag Optical converter for high luminances
AT512589B1 (de) * 2012-03-12 2014-06-15 Zizala Lichtsysteme Gmbh Lichtleitelement für einen Laser-Fahrzeugscheinwerfer sowie Fahrzeugscheinwerfer
US9958125B2 (en) 2012-03-12 2018-05-01 Zkw Group Gmbh Light guiding element for a laser vehicle headlight
EP2825818B1 (fr) 2012-03-12 2016-05-04 Zizala Lichtsysteme GmbH Élément guide de lumière pour projecteur de véhicule
AT512589A1 (de) * 2012-03-12 2013-09-15 Zizala Lichtsysteme Gmbh Lichtleitelement für einen Laser-Fahrzeugscheinwerfer sowie Fahrzeugscheinwerfer
EP3021041A1 (fr) * 2012-03-12 2016-05-18 Zizala Lichtsysteme GmbH Module d'éclairage pour phare de véhicule
JP2014022084A (ja) * 2012-07-13 2014-02-03 Koito Mfg Co Ltd 車両用灯具
EP2957818A4 (fr) * 2013-02-18 2016-11-23 Koito Mfg Co Ltd Appareil de lampe de véhicule
US20150345728A1 (en) 2013-02-18 2015-12-03 Koito Manufacturing Co., Ltd. Automotive lamp
US10247381B2 (en) 2013-02-18 2019-04-02 Koito Manufacturing Co., Ltd. Automotive lamp
DE102013013296B4 (de) 2013-08-12 2020-08-06 Schott Ag Konverter-Kühlkörperverbund mit metallischer Lotverbindung und Verfahren zu dessen Herstellung
US9982878B2 (en) 2013-08-12 2018-05-29 Schott Ag Converter-cooling element assembly with metallic solder connection
DE102013013296A1 (de) 2013-08-12 2015-02-12 Schott Ag Konverter-Kühlkörperverbund mit metallischer Lotverbindung
US10374137B2 (en) * 2014-03-11 2019-08-06 Osram Gmbh Light converter assemblies with enhanced heat dissipation
DE102014107345A1 (de) * 2014-05-26 2015-11-26 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
EP2985524A1 (fr) * 2014-08-12 2016-02-17 Zizala Lichtsysteme GmbH Phase pour vehicules automobiles dote d'unite laser
CN105371205A (zh) * 2014-08-12 2016-03-02 齐扎拉光系统有限责任公司 具有激光单元的机动车的前照灯
CN105371205B (zh) * 2014-08-12 2018-06-29 Zkw集团有限责任公司 具有激光单元的机动车的前照灯
CN107076388A (zh) * 2014-11-25 2017-08-18 罗伯特·博世有限公司 具有射束转向装置和发光物质的探照灯模块
CN107110457A (zh) * 2014-12-02 2017-08-29 罗伯特·博世有限公司 用于车辆的照明装置、具有两个照明装置的照明系统和用于运行该照明系统的方法
CN107110457B (zh) * 2014-12-02 2020-01-17 罗伯特·博世有限公司 用于车辆的照明装置、具有两个照明装置的照明系统和用于运行该照明系统的方法
WO2016087076A1 (fr) * 2014-12-02 2016-06-09 Robert Bosch Gmbh Dispositif d'éclairage pour un véhicule, système d'éclairage à deux dispositifs d'éclairage et procédé pour faire fonctionner le système d'éclairage
EP3065187A1 (fr) * 2015-03-05 2016-09-07 Christie Digital Systems USA, Inc. Réseau de matériau de conversion de longueur d'onde
US9726348B2 (en) 2015-03-05 2017-08-08 Christie Digital Systems Usa, Inc. Wavelength conversion material array
US10900651B2 (en) 2015-08-17 2021-01-26 Schott Ag Method for aligning a light spot produced on an optical converter, device comprising a light spot and use thereof, and converter-cooling body assembly with metallic solder connection
DE102015113562A1 (de) 2015-08-17 2017-02-23 Schott Ag Konverter-Kühlkörperverbund mit metallischer Lotverbindung
AT517693B1 (de) * 2015-11-11 2017-04-15 Zkw Group Gmbh Konverter für Leuchtvorrichtungen
US10550320B2 (en) 2015-11-11 2020-02-04 Zkw Group Gmbh Converter for lighting devices
AT517693A4 (de) * 2015-11-11 2017-04-15 Zkw Group Gmbh Konverter für Leuchtvorrichtungen
US10606158B2 (en) 2016-03-15 2020-03-31 Signify Holding B.V. Light emitting device
US10698150B2 (en) 2016-03-15 2020-06-30 Signify Holding B.V. Compound parabolic collimator array for high intensity lighting
WO2017157705A1 (fr) * 2016-03-15 2017-09-21 Philips Lighting Holding B.V. Dispositif électroluminescent
WO2023057312A1 (fr) * 2021-10-08 2023-04-13 Ams-Osram International Gmbh Élément convertisseur optoélectronique, dispositif semi-conducteur optoélectronique et procédé de fabrication d'un composant optoélectronique

Similar Documents

Publication Publication Date Title
WO2009115976A1 (fr) Système d'éclairage comprenant un élément luminescent avec un dissipateur thermique
EP2534411B1 (fr) Lampe comprenant du phosphore, une source de rayonnement, un système optique et un puits thermique
JP4813484B2 (ja) 高性能ｌｅｄランプシステム
JP5631509B2 (ja) 蛍光体エレメントを有する照明装置
JP6697765B2 (ja) 光源装置および投光装置
JP5373742B2 (ja) 発光装置、車両用前照灯、照明装置およびレーザ素子
JP5722068B2 (ja) 光源装置、照明装置および車両用前照灯
US10436408B2 (en) Lighting device, corresponding lamp and method
JP2019521487A (ja) 熱伝導性の蛍光取り出しドームを備えたレーザベース光源
JP2013039868A (ja) 位置ずれ検出装置、発光装置、照明装置、プロジェクタ、車両用前照灯および位置ずれ調整方法
US10422487B2 (en) Fiber optic light source
CN108351075A (zh) 高亮度发光装置
US10253941B2 (en) Lighting device, corresponding lamp and method
WO2014073237A1 (fr) Dispositif d'éclairage à semi-conducteur
JP2021028907A (ja) 光変換装置および照明装置
JP5883114B2 (ja) 発光装置、車両用前照灯および照明装置
KR102071429B1 (ko) 조명 장치
JP2016028370A (ja) 固体照明装置
JP2017224528A (ja) 照明装置
JP7500572B2 (ja) 眼科用光源
CN110799877A (zh) 高亮度光转换装置
WO2024202663A1 (fr) Dispositif source de lumière
KR102127968B1 (ko) 조명장치
KR20150102275A (ko) 조명 장치
JP2013222552A (ja) 固体照明装置

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 09723228

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 09723228

Country of ref document: EP

Kind code of ref document: A1