WO2008090507A1 - Dispositif d'éclairage et luminaire comprenant un tel dispositif d'éclairage - Google Patents

Dispositif d'éclairage et luminaire comprenant un tel dispositif d'éclairage Download PDF

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Publication number
WO2008090507A1
WO2008090507A1 PCT/IB2008/050202 IB2008050202W WO2008090507A1 WO 2008090507 A1 WO2008090507 A1 WO 2008090507A1 IB 2008050202 W IB2008050202 W IB 2008050202W WO 2008090507 A1 WO2008090507 A1 WO 2008090507A1
Authority
WO
WIPO (PCT)
Prior art keywords
light
illumination device
light source
guiding means
foregoing
Prior art date
Application number
PCT/IB2008/050202
Other languages
English (en)
Inventor
Jacobus J. Van Loon
Denis J. C. Van Oers
Original Assignee
Koninklijke Philips Electronics N.V.
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 N.V. filed Critical Koninklijke Philips Electronics N.V.
Priority to JP2009546056A priority Critical patent/JP2010517217A/ja
Publication of WO2008090507A1 publication Critical patent/WO2008090507A1/fr

Links

Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0058—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide
    • G02B6/006—Means for improving the coupling-out of light from the light guide varying in density, size, shape or depth along the light guide to produce indicia, symbols, texts or the like
    • 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
    • F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/04—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages the fastening being onto or by the light source
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0033—Means for improving the coupling-out of light from the light guide
    • G02B6/0035—Means for improving the coupling-out of light from the light guide provided on the surface of the light guide or in the bulk of it
    • G02B6/0038—Linear indentations or grooves, e.g. arc-shaped grooves or meandering grooves, extending over the full length or width of the light guide
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0011—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being planar or of plate-like form
    • G02B6/0075—Arrangements of multiple light guides
    • G02B6/0076—Stacked arrangements of multiple light guides of the same or different cross-sectional area
    • 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
    • H05B35/00—Electric light sources using a combination of different types of light generation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2113/00—Combination of light sources
    • F21Y2113/20—Combination of light sources of different form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr

Definitions

  • Illumination device and luminaire comprising such an illumination device
  • the invention relates to an illumination device.
  • the invention also relates to a lamp fitting comprising such an illumination device.
  • variable-color lamp systems In the field of lighting, in particular lighting for offices and homes or for the illumination of sales displays, in practice a number of known light sources are used, such as filament lamps, halogen lamps, low-pressure and high-pressure gas discharge lamps and of late also light-emitting diodes (LEDs). By means of such light sources and sometimes by mixing multiple individual sources it is possible to produce lamp systems of widely varying light colorations, light outputs and color renditions. In addition to the suitable choice of light coloration, light output and color rendition combined with high efficiency, variable-color lamp systems have recently been proposed, which allow a user, at least to some extent, to control in particular the light coloration of the lamp systems.
  • LEDs light-emitting diodes
  • Philips has developed a dynamic lighting system, also known as the Carpe Diem lighting system, comprising two TL5 lamps contained by a reflective luminaire.
  • the Carpe Diem lighting system has the capacity to animate a space by changing the very character of light - the light can be adjusted in level and color temperature - providing a pleasing, natural lighting rhythm that will stimulate and inspire both home and office users.
  • this solution in dynamic lighting reduces light output to about 50% compared to the light output of the individual TL5 lamps to realize a satisfying color-mix and color uniformity.
  • an illumination device comprising: at least one first light source, said first light source comprising: an at least partially light-transmissive discharge vessel filled with an ionisable substance, and discharge means for maintaining a gas discharge in the discharge vessel during operation of the first light source, light-guiding means surrounding the discharge vessel of the first light source at least partially, said light-guiding means being made of an optically substantially transparent material; and at least one second light source optically coupled with the light- guiding means such that light emitted by the at least one second light source is coupled into the light-guiding means during operation of the second light source, wherein at least one surface of the light-guiding means is provided with at least one optical emission structure for mixing light emitted by the at least one first light source and by the at least one second light source such that said mixed light is emitted by the illumination device.
  • Reflection of light within the hybrid illumination device according to the invention is reduced significantly with respect to the reflections required within the known Carpe Diem lighting system, as a result of which the hybrid illumination device according to the invention is adapted to realize an increased overall mixed light output in a relatively efficient manner, which makes the improved illumination system relatively beneficially and versatilely.
  • a user can influence the overall light output and hence also the color temperature of the illumination device as such.
  • a relatively homogeneous mixing of light emitted by the first light source(s) and the second light source(s) can be achieved by means of the illumination device according to the invention.
  • a further advantage of the illumination device according to the invention is that the illumination device does not require a particularly shaped luminaire, and may hence be constructed in a relatively simple manner.
  • the illumination device will commonly be applied as lighting for offices and homes, for the illumination of sales displays, and/or for the illumination of public places both indoor and outdoor.
  • the discharge means comprise multiple electrodes inside the discharge vessel for maintaining a gas discharge, or multiple external electrodes for maintaining a gas discharge, or a coil provided outside the discharge vessel with a winding of an electric conductor.
  • the light-guiding means or light conductor will commonly act as a waveguide for light emitted by the second light source(s) to guide this light in the direction of the discharge vessel of the first light source to enable efficient mixing of light emitted by both light sources.
  • the light-guiding means may partially surround the discharge vessel to realize partial color-mixing, wherein commonly a part of the light emitted by the first light source will be mixed by light coupled into and subsequently out of the light-guiding means. It may be conceivable that a part of the discharge vessel not being covered by the light-guiding means is covered by a reflective layer to reflect this light towards the light-guiding means to improve the color-mixing efficiency. More preferably, the light-guiding means substantially completely surrounds the discharge vessel to facilitate mixing of light of the different light sources.
  • the light-guiding means comprises at least one (transparent) jacket surrounding the discharge vessel at least partially.
  • the light-guiding means comprises multiple jackets oriented concentrically with respect to each other. In this orientation e.g. a first jacket may enclose a second jacket. Commonly, each jacket will be optically coupled to a separate (second) light source, which light sources may have mutually different characteristics. In this manner, different optical dynamic and/or static optical effects can be realized in a relatively efficient manner.
  • the first light source may have an arbitrary shape, the first light source preferably comprises an elongated light source discharge vessel. Tubed light sources, like for example TL5 lamps, are well known and relatively cheap.
  • the first light source is a low- pressure discharge lamp which will commonly not affect and deteriorate the light-guiding means and/or the second light source(s).
  • An important advantage of a low-pressure discharge lamp is a relatively low operating temperature of the lamp.
  • a tubular low- pressure mercury- vapor discharge lamp for example one or more cold-cathode fluorescent (CCFL), hot-cathode fluorescent lamps HCFL), or external electrode fluorescent lamps (EEFL) may be employed as the first light source in the illumination device according to the invention.
  • Beside QL lamps induction lamps
  • the means for maintaining a gas discharge are situated outside the discharge space surrounded by the discharge vessel.
  • said means are provided by a coil provided with a winding of an electric conductor, with a high- frequency voltage, for example having a frequency of approximately 3 MHz, being supplied to said coil in operation.
  • said coil surrounds a core of a soft-magnetic material.
  • a phosphorous coating is applied for allowing low-pressure mercury vapor discharge lamps being able to convert UV light to visible radiation for the specific illumination purpose.
  • the at least one second light source is optically coupled to an end surface of the light-guiding means.
  • Coupling light emitted by the second light source(s) via an end surface into the light-guiding means will be an efficient manner to couple light into the light-guiding means, wherein the second light source(s) can be oriented adjacent to an electrode of the first light source. It is, however, also conceivable that particular provisions are employed to couple light emitted by the second light source(s) via another surface and/or element into the light-guiding means.
  • Light of a single second light source may be coupled into the light-guiding means at least partially.
  • the second light source is formed by a light emitting diode (LED).
  • a LED is a relatively small light source, wherein the LED commonly has a relatively durable life expectancy. Moreover, merely a small voltage is required for LED operation.
  • the at least one LED is adapted to emit light with a substantially blue color to generate mixed light with a cool white or warm white color temperature.
  • Application of one or more LEDs as second light source will commonly lead to a relatively broad color temperature mixing range of approximately between 2700 and 17000 Kelvin, depending on the initial color temperature of the first light source. Beside monochromatic LEDs it is also imaginable to apply polychromatic (multicolor) LEDs.
  • Other kind of light sources like e.g. an organic LED (OLED) or a laser may also be employed as second light source.
  • the light-guiding means is preferably partially provided with a reflective layer.
  • emission of light at the location of said reflective layer can be prevented, while emission of light at an opposite side or part of the light-guiding means can be optimized.
  • the luminance of light emitted by the second light source preferably a LED
  • the second light source preferably a LED
  • the position-selective light emitting capacity of the optical emission structure increases in a direction away from the at least one light source to realize a relatively uniform and homogenous light output along the light-guiding means, and hence along the illumination device.
  • the optical emission structure preferably comprises at least one outcoupling element.
  • the outcoupling element can be of various nature and is preferably chosen from the group of outcoupling elements consisting of: prism-rings, gravures, in particular grooves, or scattering dots printed (coated) onto an inner surface and/or outer surface of the light-guiding means. More preferably, the optical emission structure comprises multiple outcoupling elements to enhance the light outcoupling capacity of the light-guiding means.
  • the outcoupling elements may even form a diffuse-reflective character, which may be an image or a symbol. In this manner, e.g. advertorials or other commercial expressions may be visualized.
  • the light-guiding means preferably one or more jackets, is preferably made of glass or plastic, in particular polymethylmethacrylate (PMMA) or polycarbonate (PC). Both materials have or may have the characteristic to be at least partially transparent for light.
  • the light-guiding means may be positioned at a distance from the first light source.
  • the light-guiding structure and the discharge vessel are mutually coupled to provide a relatively solid construction of the illumination device according to the invention. Coupling may be achieved by means of a transparent adhesive and/or by conventional mechanical means.
  • the light-guiding structure and the discharge vessel are mutually integrated. Since the discharge vessel is commonly made of (quartz) glass, the light-guiding means will also be made of (quartz) glass according to the embodiment. Integration of the discharge vessel and the light-guiding means would lead to a further simplification of the construction of the illumination device according to the invention.
  • the invention also relates to a luminaire comprising an illumination device according to the invention, wherein the illumination device will be mounted in the luminaire.
  • the hybrid illumination device can be mounted in various manners.
  • a conventional TL5 luminaire may be used to mount the illumination device, provided that said luminaire also incorporates drivers for the second light source.
  • the luminaire comprises a control unit for controlling the first light source and the second light source independent of each other to regulate the color temperature and light intensity of the illumination device. Since the second light source is commonly formed by a LED, the illumination device and hence the luminaire may act as a night lighting in case the first light source, preferably a low-pressure discharge lamp, is switched off, while the LED('s) is/are switched on by the control unit.
  • Fig. 1 shows a cross section of a first embodiment of an illumination device according to the invention
  • Fig. 2a shows a side view of a second embodiment of an illumination device according to the invention
  • Fig. 2b shows a side view of a third embodiment of an illumination device according to the invention
  • Fig. 2c shows a side view of a fourth embodiment of an illumination device according to the invention
  • Fig. 3 shows a perspective view of a fifth embodiment of an illumination device according to the invention.
  • Fig. 1 shows a cross section of a first embodiment of an illumination device 1 according to the invention.
  • the illumination device comprises a fluorescent tube 2, which tube 2 comprises a discharge vessel 3 and multiple electrodes 4a, 4b connected to said vessel 3, between which electrodes 4a, 4b a discharge extends during operation of the fluorescent tube 2 leading to emission of light.
  • the discharge vessel 3 is enclosed by a substantially cilindrical jacket 5 being made of a substantially transparent material, preferably PMMA.
  • the jacket 5 is adapted to act as a waveguide for light (indicated with arrows) emitted by multiple LEDs 6 positioned adjacent to the electrodes 4a, 4b of the fluorescent tube 2. Light emitted by the LEDs 6 is coupled into the jacket 5 via end surfaces 7a, 7b of the jacket 5.
  • An outer surface of the jacket 5 is provided with multiple outcoupling elements 8, in particular grooves, which are adapted to allow light to exit the jacket 5 in a predefined direction. Since light of both the LEDs, after being led through the jacket 5, and the fluorescent tube 2 are emitted in more or less the same direction (radially away from the illumination device 1), an efficient mixing of light will occur.
  • the distance between neighboring outcoupling elements 8 is relatively large close to the LEDs 6 and is relatively small in the central region of the discharge vessel 3 to establish a relatively homogeneous light output of LED light out of the jacket 5.
  • FIG. 2a shows a side view of a second embodiment of an illumination device 9 according to the invention.
  • This illumination device 9 is constructively substantially similar to the illumination device 1 shown in Fig. 1.
  • the illumination device 9 shown in this figure comprises an elongated discharge lamp 10 being surrounded by a transparent housing 11.
  • Two LEDs 12 are provided to couple light emitted by said LEDs 12 via an end surface 13 of the housing 11 into said housing 11.
  • An optical emission structure (not shown) is used to realize an efficient mixing of light emitted by the LEDs 12 and discharge lamp 10.
  • the LEDs 12 are positioned relatively close to each other and are not positioned regularly with respect to the end surface 13 of the housing 11, in contrary to the four LEDs 14 of the illumination device 15 shown in Fig. 2b.
  • Fig. 2c shows a side view of an alternative embodiment of an illumination device 16 according to the invention, wherein a tubular discharge lamp 17 is partially surrounded by two concentrically oriented transparent jackets 18a, 18b.
  • An inner jacket 18a is optically coupled via both end surfaces 19 of said jacket 18a with a first set of LEDs 20a.
  • the outer jacket 18b is optically coupled via particular grooves 21 applied to said jacket 18b with a second set of LEDs 20b.
  • Light coupled into the jackets 18a, 18b can be emitted by the jackets 18a, 18b via optical structures 22a, 22b applied to the jackets 18a, 18b respectively.
  • FIG. 3 shows a perspective view of a fifth embodiment of an illumination device 24 according to the invention.
  • the illumination device 24 shown in this figure comprises a discharge lamp 25.
  • the discharge lamp 25 comprises a relatively thick- walled discharge vessel 26 made of glass, and multiple electrodes 27 coupled to said vessel 26.
  • LEDs 28 are provided at end surface 29 of the discharge vessel 26 to couple light into the wall of the discharge vessel 26.
  • Diffuse-reflective symbols 29 are provided to the discharge vessel 26 via which symbols 29 light initially emitted by the LEDs 28 will be emitted and mixed with light emitted by the discharge lamp 25.

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

L'invention porte sur un dispositif d'éclairage (1) comportant : au moins une première source de lumière (2) qui inclut un récipient (3) pour décharge photoémettrice rempli d'une substance ionisable ; de multiples électrodes connectées audit récipient, entre lesquelles une décharge s'étend pendant le fonctionnement de la première source de lumière, des moyens de guidage de lumière (5) entourant le récipient de décharge de la première source de lumière (2) ; au moins une seconde source de lumière (6) optiquement couplée aux moyens de guidage de lumière ; au moins une surface des moyens de guidage de lumière (5) est dotée d'au moins une structure d'émission optique (8) pour mélanger la lumière émise par la première source (2) et par la seconde source de lumière (6), de telle sorte que ladite lumière mélangée est émise par le dispositif d'éclairage. L'invention porte également sur un luminaire incluant un tel dispositif d'éclairage.
PCT/IB2008/050202 2007-01-23 2008-01-21 Dispositif d'éclairage et luminaire comprenant un tel dispositif d'éclairage WO2008090507A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2009546056A JP2010517217A (ja) 2007-01-23 2008-01-21 照明デバイス及び斯様な照明デバイスを有する照明器具

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP07100965 2007-01-23
EP07100965.8 2007-01-23

Publications (1)

Publication Number Publication Date
WO2008090507A1 true WO2008090507A1 (fr) 2008-07-31

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PCT/IB2008/050202 WO2008090507A1 (fr) 2007-01-23 2008-01-21 Dispositif d'éclairage et luminaire comprenant un tel dispositif d'éclairage

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JP (1) JP2010517217A (fr)
WO (1) WO2008090507A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010054421A1 (fr) * 2008-11-17 2010-05-20 Tridonicatco Gmbh & Co Kg Luminaire mixte
JP2010140843A (ja) * 2008-12-15 2010-06-24 Rohm Co Ltd Ｌｅｄランプ
WO2010111725A1 (fr) * 2009-04-01 2010-10-07 Tridonic Gmbh & Co Kg Moyen d'éclairage, de préférence pour l'éclairage publicitaire
WO2011124599A1 (fr) * 2010-04-09 2011-10-13 Zumtobel Lighting Gmbh Arrangement d'émission de lumière comprenant plusieurs sources de lumière et un élément diffuseur de lumière transparent
DE102010046382A1 (de) * 2010-09-24 2012-03-29 Great Top Technology Co., Ltd. Beleuchtungseinrichtung mit heterogenen Lichtquellen
US9377168B2 (en) 2011-10-31 2016-06-28 Koninklijke Philips N.V. Compact light output device with wavelength conversion
WO2018177911A1 (fr) * 2017-03-29 2018-10-04 Singulus Technologies Ag Corps d'éclairage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020126478A1 (en) * 2001-02-19 2002-09-12 Cornelissen Hugo Johan Illumination system and display device
WO2004036618A1 (fr) * 2002-10-14 2004-04-29 Philips Intellectual Property & Standards Gmbh Corps lumineux destine a generer une lumiere blanche
EP1589281A2 (fr) * 2004-04-24 2005-10-26 Diehl Luftfahrt Elektronik GmbH Dispositif d'éclairage hybride à LED et tube fluorescent

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20020126478A1 (en) * 2001-02-19 2002-09-12 Cornelissen Hugo Johan Illumination system and display device
WO2004036618A1 (fr) * 2002-10-14 2004-04-29 Philips Intellectual Property & Standards Gmbh Corps lumineux destine a generer une lumiere blanche
EP1589281A2 (fr) * 2004-04-24 2005-10-26 Diehl Luftfahrt Elektronik GmbH Dispositif d'éclairage hybride à LED et tube fluorescent

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010054421A1 (fr) * 2008-11-17 2010-05-20 Tridonicatco Gmbh & Co Kg Luminaire mixte
JP2010140843A (ja) * 2008-12-15 2010-06-24 Rohm Co Ltd Ｌｅｄランプ
WO2010111725A1 (fr) * 2009-04-01 2010-10-07 Tridonic Gmbh & Co Kg Moyen d'éclairage, de préférence pour l'éclairage publicitaire
WO2011124599A1 (fr) * 2010-04-09 2011-10-13 Zumtobel Lighting Gmbh Arrangement d'émission de lumière comprenant plusieurs sources de lumière et un élément diffuseur de lumière transparent
DE102010046382A1 (de) * 2010-09-24 2012-03-29 Great Top Technology Co., Ltd. Beleuchtungseinrichtung mit heterogenen Lichtquellen
US9377168B2 (en) 2011-10-31 2016-06-28 Koninklijke Philips N.V. Compact light output device with wavelength conversion
WO2018177911A1 (fr) * 2017-03-29 2018-10-04 Singulus Technologies Ag Corps d'éclairage
CN110462720A (zh) * 2017-03-29 2019-11-15 辛古勒斯技术股份公司 发光体
US10902758B2 (en) 2017-03-29 2021-01-26 Singulus Technologies Ag Illuminant
CN110462720B (zh) * 2017-03-29 2022-04-19 辛古勒斯技术股份公司 发光体

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