JP2020517993A - レーザベース光源用の信頼性の高い光変換デバイス - Google Patents
レーザベース光源用の信頼性の高い光変換デバイス Download PDFInfo
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- JP2020517993A JP2020517993A JP2019556853A JP2019556853A JP2020517993A JP 2020517993 A JP2020517993 A JP 2020517993A JP 2019556853 A JP2019556853 A JP 2019556853A JP 2019556853 A JP2019556853 A JP 2019556853A JP 2020517993 A JP2020517993 A JP 2020517993A
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Images
Classifications
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
- G02B5/0816—Multilayer mirrors, i.e. having two or more reflecting layers
- G02B5/0825—Multilayer mirrors, i.e. having two or more reflecting layers the reflecting layers comprising dielectric materials only
-
- 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
- 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
-
- 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
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/40—Cooling of lighting devices
- F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
-
- 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
- F21V29/505—Cooling arrangements characterised by the adaptation for cooling of specific components of 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
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
-
- 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
- F21V7/00—Reflectors for light sources
- F21V7/22—Reflectors for light sources characterised by materials, surface treatments or coatings, e.g. dichroic 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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
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- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/30—Semiconductor lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- 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
- H01S5/0071—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 beam steering, e.g. using a mirror outside the cavity to change the beam direction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Semiconductor Lasers (AREA)
- Optical Filters (AREA)
- Led Device Packages (AREA)
Abstract
Description
laser-based light sources)に対する光変換器の信頼性は、当該光変換器の効果的な冷却に強く依存する。したがって、光変換器(例えば、蛍光体)と熱放散構造(ヒートシンク)との間の信頼性のある効果的な熱結合を可能にすることが必要である。さらに、変換器の温度を上昇させて光変換器の効率を低下させる光学的損失を回避すべきである。
<300nm、より好ましくはRa <150nm、最も好ましくはRa <30nmの表面粗さをもたらすようにする。セラミック光変換器は、焼結された「細孔密度(pore-dense)」であり、少なくとも1つの表面上で、高屈折率材料と低屈折率材料が交互になったダイクロイックコーティング(dichroic coating)で被覆されてもよい。ダイクロイック層は、一方側で、入射一次光の反射を減少させ、入射一次光に対する反射防止コーティングを生成する一方、光変換器の他方の側では、ダイクロイック層は、一次光の反射を増加させ、光変換器の結合表面上に本発明の狭帯域反射器を生成するように構成される。
Instituteによって規定された色度の規格である。ほとんどの自動車ヘッドライトは、上記のように5700 Kレンジを使用している。或いは、6000 Kの色温度を使用することも可能である。上述のようなレーザベース光源を含む車両ヘッドライトは、高品質の白色光の提供を支持することができる。
参照番号のリスト:
10 一次光
12 反射一次光
20 変換光
100 レーザベース光源
110 レーザ
130 光変換装置
131 光放射表面
132 光変換器
134 狭帯域反射構造
136 結合層
138 ミラー構造
140 ヒートシンク
Claims (9)
- 光変換装置であって:
一次光を変換光へと変換するように構成された光変換器であり、変換光のピーク放射波長が一次光のピーク放射波長よりも長い波長範囲にある、光変換器;及び
光変換器の結合表面の少なくとも一部に結合された反射構造であり、当該反射構造に衝突する前記一次光の少なくとも55%を反射し、当該反射構造に衝突する前記変換光の少なくとも50%を透過するように構成された狭帯域反射器である、反射構造;
を含む光変換装置。 - 前記光変換器は結合層によってヒートシンクに機械的に結合され、前記ヒートシンクはミラー構造を有し、前記ミラー構造は該ミラー構造に衝突する前記変換光の少なくとも90%を前記光変換器へと反射するように構成され、前記反射構造は前記光変換器の前記結合表面と前記ミラー構造との間に配置される、
ことを特徴とする請求項1に記載の光変換装置。 - 前記反射構造は、前記結合層が前記反射構造と前記ミラー構造との間に配置されるように、前記結合表面上に堆積された少なくとも1つの層を有することを特徴とする請求項2に記載の光変換装置。
- 前記反射構造は、前記結合層が前記反射構造と前記光変換器との間に配置されるように、前記ミラー構造の頂部に配置される少なくとも1つの層を備えることを特徴とする請求項2に記載の光変換装置。
- 前記結合表面は、前記光変換器の光放射表面と反対側に配置されていることを特徴とする請求項1又は2に記載の光変換装置。
- 前記反射構造は誘電体ミラーを備えることを特徴とする請求項1又は2に記載の光変換装置。
- 前記ミラー構造は、前記光変換器の隣の前記ヒートシンクの一方側上に堆積された銀層を含む、請求項2に記載の光変換装置。
- レーザベース光源であり:
前記一次光を放射するように構成された少なくとも1つのレーザ;及び
請求項1〜7のいずれか一項に記載の光変換装置;
を含む、レーザベース光源。 - 請求項8に記載のレーザベース光源を含む車両ヘッドライト。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP17167577 | 2017-04-21 | ||
EP17167577.0 | 2017-04-21 | ||
PCT/EP2018/059990 WO2018193016A1 (en) | 2017-04-21 | 2018-04-19 | Reliable light conversion device for laser-based light sources |
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JP2020517993A true JP2020517993A (ja) | 2020-06-18 |
JP7154228B2 JP7154228B2 (ja) | 2022-10-17 |
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Country Status (5)
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US (1) | US11333806B2 (ja) |
EP (1) | EP3612871A1 (ja) |
JP (1) | JP7154228B2 (ja) |
CN (1) | CN110520767B (ja) |
WO (1) | WO2018193016A1 (ja) |
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CN209926256U (zh) * | 2018-11-16 | 2020-01-10 | 华域视觉科技(上海)有限公司 | 集成LiDAR系统的照明装置及汽车 |
DE102019121518A1 (de) * | 2019-08-09 | 2021-02-11 | Schott Ag | Lichtkonversions- und Beleuchtungseinrichtung |
EP4051951B1 (en) | 2019-10-29 | 2023-12-06 | Signify Holding B.V. | High intensity light source with high cri and r9 |
CN116547571A (zh) * | 2020-11-23 | 2023-08-04 | 康宁公司 | 自对准背光反射器 |
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