WO2013017339A1 - Wellenlängenkonversionskörper und verfahren zu dessen herstellung - Google Patents
Wellenlängenkonversionskörper und verfahren zu dessen herstellung Download PDFInfo
- Publication number
- WO2013017339A1 WO2013017339A1 PCT/EP2012/062245 EP2012062245W WO2013017339A1 WO 2013017339 A1 WO2013017339 A1 WO 2013017339A1 EP 2012062245 W EP2012062245 W EP 2012062245W WO 2013017339 A1 WO2013017339 A1 WO 2013017339A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light
- phosphor
- wavelength conversion
- light guide
- wavelength
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
- F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
- F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
- F21K9/64—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
-
- 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
- F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
- F21V13/02—Combinations of only two kinds of elements
- F21V13/08—Combinations of only two kinds of elements the elements being filters or photoluminescent elements and reflectors
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49826—Assembling or joining
Definitions
- Wavelength conversion body and method for its
- the invention relates to a wavelength conversion body for generating wavelength-converted light from the primary light irradiated into the wavelength conversion body.
- the invention further relates to methods for producing a wavelength conversion body.
- LARP Laser Activated Remote Phosphor
- the phosphor converts at least a portion of the primary light into wavelength-converted light, typically in light of a larger wavelength (“down-converting") the energy difference between the primary light and the "phosphor"
- Wavelength-converted light is emitted as "Stokes heat,” which causes the phosphor to heat up, and this heating of the phosphor can turn into a “stokes heat.”
- One way to better heat-dissipate a phosphor is to position the phosphor in a window of a rotating light-emitting wheel, which window can be irradiated by the laser.
- Laser beam is a time-average irradiation and thus limited heat generation.
- the use of a color wheel is comparatively expensive, less effective and does not allow continuous generation of the
- the phosphor can be embedded in water glass.
- a phosphor layer is made as thin as possible. In this case, the phosphor layer is located between the laser and the
- Fluorescent combined with a high luminous efficacy.
- Wavelength conversion body i.e., a body for
- Wavelength conversion body irradiated primary light comprising one for the primary light and the
- Phosphor body is connected monolithically.
- the monolithic compound a particularly stable wavelength conversion body is provided, which also no or no significant thermal resistance between the light guide on the one hand and the at least one phosphor body on the other hand more
- the light guide body can serve as a heat conduction body or heat sink, so that the at least one phosphor body can be cooled with the same effectiveness.
- the Lichtleitkorper is transparent to both the primary light and the wavelength-converted light, the Lichtleitkorper between a primary light
- the primary light can be radiated into the Lichtleitkorper and are directed by the Lichtleitkorper to the at least one phosphor body.
- the primary light is at least partially wavelength converted or wavelength-converted and following at least the wavelength-converted light again from the Lichtleitkorper and thus from the wavelength conversion body
- the Lichtleitkorper is transparent in particular for the primary light and / or the wavelength-converted light.
- the at least one phosphor body may have one or more phosphors.
- the plurality of phosphors may convert the primary light into wavelength-converted light of different colors (e.g., different
- Peak wavelength So likes the at least one phosphor body in a development exactly
- Be phosphor body in particular exactly one
- This development may be particularly suitable to partially convert blue primary light into yellow light or convert and so a blue / yellow
- a luminescent substance can be understood in particular to be a luminescent material which comprises an or contains several host lattices as well as activators incorporated therein and possibly also sensitizers.
- the structure and mode of action of a phosphor are well known and
- phosphor as such may be added to a base material.
- an activator can be added, which is in the lattice of the base material of
- Fluorescent body as the host grid incorporates.
- at least one activator may be included under a phosphor
- a phosphor may be understood to mean an activator incorporated in a host lattice or an activator as such (or primary materials thereof), if not
- the phosphor may also include at least one sensitizer (or a precursor thereof).
- the light guide body and the at least one phosphor body can also be used as light guide region or as
- the light guide body may in particular be a light-conducting body based on an internal total reflection (TIR body).
- the light guide for example, in the form of a
- optical concentrator in particular in the form of a CPC ("Compound Parabolic Concentrator", composite parabolic concentrator) body.
- the light guide body has a light entry surface for entry of the primary light and a light exit surface for exit of at least the wavelength converted light, and the at least one phosphor body of the light entry surface optically is arranged downstream. Consequently, the primary light initially enters the light entry surface, is guided by the light guide body to the at least one phosphor body, there by means of at least one phosphor
- the light entry surface is arranged optically downstream, includes that the at least one phosphor body is arranged at a distance from the light entry surface. This in turn supports effective light extraction.
- the light guide is in the form of a CPC-shaped body
- the light entrance surface corresponds to a larger top surface of both top surfaces and the at least one phosphor body is arranged on the smaller top surface of the two top surfaces.
- Light entry surface and the light exit surface at least partially coincide and at least one phosphor body of the light entry surface
- a coincident region of the light entry surface and the light exit surface may also be referred to as
- Phosphor bodies may be present in particular at opposite ends of the light guide body, which enables a simple shaping and effective irradiation of the at least one phosphor body with the primary light.
- the light guide is in the form of a CPC-shaped body, a preferred development, that the light transmission surface corresponds to the larger top surface of the two top surfaces and the at least one
- Fluorescent body is arranged on the smaller top surface of the two top surfaces or a part thereof.
- the at least one phosphor body is covered by an (outer) reflective cover.
- the reflective cover may be specular or diffusely reflective.
- a diffusely reflecting cover offers the advantage that endless passages are prevented. There are then no closed light paths in the
- Wavelength conversion body since the diffuse reflectivity breaks up these light paths.
- a thermal connection of such a reflector is also not relevant because it has no optically active material.
- the specular reflective reflector is formed by means of a reflective layer.
- the specular reflective reflector is formed by means of a reflective layer.
- reflective reflector comprises a high scattering material embedded in a binder or matrix, e.g.
- Titanium dioxide
- permeable connection between the light guide and the at least one phosphor body generally advantageous Training that the bodies have a same base material.
- the bodies have a same base material.
- Base material (without phosphor) and consist of at least one phosphor body made of a phosphor mixed base material. So can in particular a
- the light guide body (or region) and the at least one phosphor body (or region) are or are garnet-based bodies (or regions).
- a garnet-based body can be
- a garnet-based body can be doped with an activator of a phosphor, with the base material (the garnet or garnetoid) providing the host lattice.
- a garnet-based body is also good thermal conductivity.
- a garnet-based body can be advantageously carried out except by single crystal growth
- the base material of the garnet-based body (s) may, in particular, comprise YAG, YAGaG, LuAG or LuAGaG, etc.
- the light guide is a (translucent) ceramic light guide and the at least one phosphor body at least one
- a ceramic is good heat-conducting and robust.
- the wavelength conversion body can be produced in particular by the fact that the light guide body and the at least one phosphor body are manufactured separately, a respective contact surface of the Body is smoothed and the light guide body and the
- At least one phosphor body are brought together at their contact surfaces. It is a further development that the two contact surfaces or facets to be united are planarized,
- bred light guide is blown up. It is also a development that at least one single crystal
- bred light guide is blown up.
- the preparation may comprise at least the following steps: filling a slurry of a green body of the light-conducting body or of the at least one phosphor body into a mold; Following filling of a slurry from a green body of the other body into the mold; and sintering the combined green body.
- a wavelength conversion body can be obtained by combining the green bodies before sintering. If, for example, slip is poured into a mold, then advantageously one first
- the remainder of the mold may be filled, at least in part, with undoped or phosphor-free green body material.
- the order of filling the slip is not
- Wavelength conversion body determined.
- the resulting (total) green body is then densely sintered.
- nitride-based ceramic has nitrogen as a main component, e.g. A1N, SiN or AlSiN.
- Nitride-based ceramics have the advantage of being in
- translucent, e.g. translucent, variants can be produced.
- Sialon is a mixed ceramic of Si 3 N 4 , A1 2 0 3 and A1N (SiAlON). Sialons have an improved sintering behavior compared to a pure nitride-based ceramic, in particular a lower sintering temperature at atmospheric pressure. Of the various modifications of the sialon, the so-called sialon is preferred here, among other things because of its
- a dense, transparent ceramic can be produced.
- a sialon is particularly preferred having a comparatively low proportion of A1 2 0. 3
- the green body may have sintering aids, e.g. based on alkaline earth metals and / or rare earths.
- Phosphor which has activators or activator elements Eu, Ce, Yb, Mn and / or Nd. These activators can be easily incorporated into many ceramics and garnet-based bodies and precisely dosed. Thus, Eu typically gives amber wavelength converted light and Ce gives emission of yellow wavelength converted light. Yellow wavelength-converted light is e.g. also from Eu, Yb and Mn.
- a garnet-based body can be used as such as a host lattice and with at least one
- Activator in particular Ce
- offset in particular doping, e.g. to YAG: Ce.
- Ceramic bodies may, for example, be suitable starting materials, e.g. Oxides, nitrides or fluorides of the phosphors the
- Green body be added.
- Eu is provided as an activator
- Eu is reduced as the activator, etc., and is present in the finished ceramic body as Eu2 +.
- Ce3 +, Yb2 +, Mn2 +, etc. can be introduced as activators.
- a sialon, in particular - sialon, as such already can be introduced as activators.
- an activator can be incorporated in the lattice of the ceramic as a host lattice, or the ceramics can become a (finished) luminescent substance (or, in particular, prior to sintering or the like) suitable starting material) which has or generates its own host lattice.
- the invention is not limited to systems in which the light guide body and the at least one
- Fluorescent body are designed as sialons. So may only consist of the light guide of sialon and the at least one phosphor body from another
- nitride-based ceramics It is exploited that a lattice mismatch of nitride-based ceramics is rather low.
- a material of a phosphor-added or doped nitride-based ceramic having Ca as the activator has AlSiN or SiAlN offset,
- Fig.l shows a sectional view in side view a
- Wavelength conversion body according to a first embodiment
- Wavelength conversion body according to a second embodiment.
- Fig.l shows a sectional view in side view of a wavelength conversion body 1 according to a first
- the wavelength conversion body 1 serves to generate wavelength-converted light from the wavelength conversion body 1 irradiated Primary light P.
- the primary light P may be, for example, laser light generated by a laser or narrow-band light generated by a light emitting diode.
- the type of light source generated by the primary light P is basically not limited and may include, for example, a broadband radiating light source with or without a downstream filter, or a discharge lamp with line emission or a pressure broadened wavelength emission region.
- a corpuscular radiator for example, a
- Electron beam or an ion beam
- the wavelength conversion body 1 has a
- the light guide 2 here has the shape of a truncated cone with a larger top surface 3, a smaller top surface 4 and a
- the larger cover surface 3 serves as a light entry surface for entry of the primary light P.
- the light guide 2 is configured as a TIR body, so that at the larger top surface 3 irradiated primary light P is passed directly or by total internal reflection to the smaller top surface 4.
- the smaller top surface 4 is covered with a phosphor body 6, wherein the light guide body 2 and the phosphor body 6 are connected to each other monolithically.
- Phosphor body 6 is a thin disc-shaped body of a translucent base material
- Fluorescent body 6 and is there at least partially converted into wavelength-converted (secondary) light S.
- the phosphor body 6 is therefore as the
- the phosphor body 6 is formed by a specularly reflecting cover 7 in the form of a metal layer applied externally to the phosphor body 6
- the light guide body 2 is also transparent to the wavelength-converted light S,
- the larger top surface 3 also serves as a light exit surface and thus also as a combined light transmission surface.
- Top surface 3 and phosphor body 6 obstructs the
- Wavelength conversion body 1 not.
- the light guide body 2 and the phosphor body 6 are here purely by way of example embodied as garnet-based body, which differ in particular in that the
- Phosphor body 6 with e.g. Ce or Eu activated phosphor is doped or staggered.
- the light guide body 2 and the phosphor body 6 may be e.g. be joined by sintering or bursting. In the case of blasting, the smaller top surface 4 of the
- Fig. 2 shows a sectional side view of a wavelength conversion body 11 according to a second
- the wavelength conversion body 11 is constructed similarly to the wavelength conversion body 1.
- the light guide 12 now has at least approximately a CPC shape with a larger top surface 13, a
- the phosphor body 16 is also here as a thin,
- the reflective cover 17 is here configured as a diffusely reflecting cover 17 to provide endless light paths in the wavelength conversion body 11
- the cover 17 may, for example, have diffusely reflecting TiO 2 , which is contained as filler in a suitable binding material, eg silicone.
- a suitable binding material eg silicone.
- the light guide body 12 and the phosphor body 16 are formed here as a sialon body, which thereby
- the light guide body 12 and the phosphor body 16 may be e.g. be joined by sintering or bursting. In the case of blasting are the smaller ones
- Top surface 14 of the light guide and the smaller top surface 14 facing side of the phosphor body 16 has been planarized and connected to each other as contact surfaces.
- sintering using slip as a green body it is also manufacturing technology here
- Phosphor body 16 is filled first.
- the wavelength conversion body 1 may consist of a ceramic and the wavelength conversion body 11 may be a garnet-based body. Also, in both
- reflective cover can be used.
- Wavelength conversion body is not limited to the shapes shown.
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Luminescent Compositions (AREA)
- Optical Filters (AREA)
- Semiconductor Lasers (AREA)
- Led Device Packages (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/236,593 US20140166902A1 (en) | 2011-08-01 | 2012-06-25 | Wavelength Conversion Body And Method For Manufacturing Same |
| CN201280038604.4A CN103733363B (zh) | 2011-08-01 | 2012-06-25 | 波长转换体及其制造方法 |
| JP2014523248A JP5984932B2 (ja) | 2011-08-01 | 2012-06-25 | 波長変換部材及び該部材の製造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102011080179A DE102011080179A1 (de) | 2011-08-01 | 2011-08-01 | Wellenlängenkonversionskörper und Verfahren zu dessen Herstellung |
| DE102011080179.0 | 2011-08-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013017339A1 true WO2013017339A1 (de) | 2013-02-07 |
Family
ID=46614434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2012/062245 Ceased WO2013017339A1 (de) | 2011-08-01 | 2012-06-25 | Wellenlängenkonversionskörper und verfahren zu dessen herstellung |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20140166902A1 (de) |
| JP (1) | JP5984932B2 (de) |
| DE (1) | DE102011080179A1 (de) |
| WO (1) | WO2013017339A1 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3220963B1 (de) * | 2014-11-18 | 2019-01-23 | Tetra Laval Holdings & Finance SA | Elektronenstrahler mit dosimeteranordnung |
| CN108235720B (zh) * | 2015-05-26 | 2020-08-11 | 亮锐控股有限公司 | 用于产生高亮度光的光学设备 |
| WO2017053233A1 (en) | 2015-09-24 | 2017-03-30 | Osram Sylvania Inc. | Stable red ceramic phosphors and technologies including the same |
| JP6469893B2 (ja) * | 2016-01-26 | 2019-02-13 | シャープ株式会社 | 発光装置および照明装置 |
| JP6852976B2 (ja) * | 2016-03-29 | 2021-03-31 | 日本特殊陶業株式会社 | 波長変換部材、その製造方法および発光装置 |
| JP6867870B2 (ja) | 2017-05-18 | 2021-05-12 | スタンレー電気株式会社 | 車両用灯具 |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303549A (en) * | 1964-03-23 | 1967-02-14 | Sanders Associates Inc | Method of making semiconductor devices utilizing vacuum welding |
| US3497944A (en) * | 1967-04-28 | 1970-03-03 | Boeing Co | Devices for vacuum brazing |
| US6366018B1 (en) * | 1998-10-21 | 2002-04-02 | Sarnoff Corporation | Apparatus for performing wavelength-conversion using phosphors with light emitting diodes |
| EP1528603A2 (de) * | 2003-10-31 | 2005-05-04 | Osram Opto Semiconductors GmbH | Lumineszenzdiodenchip |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100288751B1 (ko) * | 1997-02-24 | 2001-05-02 | 윤종용 | 광페롤용슬리브의제조방법 |
| US6350041B1 (en) * | 1999-12-03 | 2002-02-26 | Cree Lighting Company | High output radial dispersing lamp using a solid state light source |
| DE10006286C1 (de) * | 2000-02-14 | 2001-10-18 | 3M Espe Ag | Lichtwellenkonvertervorrichtung und deren Verwendung im Dentalbereich |
| DE10200243A1 (de) * | 2002-01-05 | 2003-07-17 | Zeiss Carl Smt Ag | Verfahren zum Ansprengen von optischen Elementen auf einem Gegenelement |
| DE10213294B4 (de) * | 2002-03-25 | 2015-05-13 | Osram Gmbh | Verwendung eines UV-beständigen Polymers in der Optoelektronik sowie im Außenanwendungsbereich, UV-beständiges Polymer sowie optisches Bauelement |
| WO2004005216A1 (ja) * | 2002-07-09 | 2004-01-15 | Kenichiro Miyahara | 薄膜形成用基板、薄膜基板、光導波路、発光素子、及び発光素子搭載用基板 |
| US7380962B2 (en) * | 2004-04-23 | 2008-06-03 | Light Prescriptions Innovators, Llc | Optical manifold for light-emitting diodes |
| US7070300B2 (en) * | 2004-06-04 | 2006-07-04 | Philips Lumileds Lighting Company, Llc | Remote wavelength conversion in an illumination device |
| US7543959B2 (en) * | 2005-10-11 | 2009-06-09 | Philips Lumiled Lighting Company, Llc | Illumination system with optical concentrator and wavelength converting element |
| KR101281342B1 (ko) * | 2005-11-22 | 2013-07-02 | 쓰리엠 이노베이티브 프로퍼티즈 컴파니 | 발광용품 어레이 및 이의 제조 방법 |
| EP2097935B1 (de) * | 2006-12-21 | 2016-10-05 | Koninklijke Philips N.V. | Lichtemissionsvorrichtung mit geformtem wellenlängenumrichter |
| JP5339683B2 (ja) * | 2007-03-02 | 2013-11-13 | キヤノン株式会社 | 蛍光体膜の多元真空蒸着法を用いた製造方法 |
| DE102007046611A1 (de) * | 2007-09-28 | 2009-04-02 | Osram Opto Semiconductors Gmbh | Lichtquelle mit Konversionselement und Lichtwellenleiter, Verfahren zur Herstellung der Lichtquelle und deren Verwendung |
| JP2011512037A (ja) * | 2008-02-08 | 2011-04-14 | イルミテックス, インコーポレイテッド | エミッタ層成形のためのシステムおよび方法 |
| JP2010024278A (ja) * | 2008-07-16 | 2010-02-04 | Stanley Electric Co Ltd | 蛍光体セラミック板およびそれを用いた発光素子 |
| JP5239848B2 (ja) * | 2008-12-26 | 2013-07-17 | 住友大阪セメント株式会社 | 透明セラミック成形体 |
| US20100202129A1 (en) * | 2009-01-21 | 2010-08-12 | Abu-Ageel Nayef M | Illumination system utilizing wavelength conversion materials and light recycling |
| US8648372B2 (en) * | 2009-04-14 | 2014-02-11 | Panasonic Corporation | Light-emitting device, method for adjusting optical properties, and method for manufacturing light-emitting devices |
| US8449128B2 (en) * | 2009-08-20 | 2013-05-28 | Illumitex, Inc. | System and method for a lens and phosphor layer |
| US8585253B2 (en) * | 2009-08-20 | 2013-11-19 | Illumitex, Inc. | System and method for color mixing lens array |
| US9062847B2 (en) * | 2011-04-13 | 2015-06-23 | Osram Gmbh | Method for manufacturing a phospor device and lighting apparatus comprising such phosphor device |
-
2011
- 2011-08-01 DE DE102011080179A patent/DE102011080179A1/de not_active Withdrawn
-
2012
- 2012-06-25 WO PCT/EP2012/062245 patent/WO2013017339A1/de not_active Ceased
- 2012-06-25 US US14/236,593 patent/US20140166902A1/en not_active Abandoned
- 2012-06-25 JP JP2014523248A patent/JP5984932B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3303549A (en) * | 1964-03-23 | 1967-02-14 | Sanders Associates Inc | Method of making semiconductor devices utilizing vacuum welding |
| US3497944A (en) * | 1967-04-28 | 1970-03-03 | Boeing Co | Devices for vacuum brazing |
| US6366018B1 (en) * | 1998-10-21 | 2002-04-02 | Sarnoff Corporation | Apparatus for performing wavelength-conversion using phosphors with light emitting diodes |
| EP1528603A2 (de) * | 2003-10-31 | 2005-05-04 | Osram Opto Semiconductors GmbH | Lumineszenzdiodenchip |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102011080179A1 (de) | 2013-02-07 |
| CN103733363A (zh) | 2014-04-16 |
| JP5984932B2 (ja) | 2016-09-06 |
| US20140166902A1 (en) | 2014-06-19 |
| JP2014522116A (ja) | 2014-08-28 |
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