JP7073591B2 - 切頭ボールレンズを使用するレーザベースの照明における改善された熱管理 - Google Patents
切頭ボールレンズを使用するレーザベースの照明における改善された熱管理 Download PDFInfo
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- F21V5/04—Refractors for light sources of lens shape
- F21V5/046—Refractors for light sources of lens shape the lens having a rotationally symmetrical shape about an axis for transmitting light in a direction mainly perpendicular to this axis, e.g. ring or annular lens with light source disposed inside the ring
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- 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
- F21V29/71—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements
- F21V29/713—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks using a combination of separate elements interconnected by heat-conducting means, e.g. with heat pipes or thermally conductive bars between separate heat-sink elements in direct thermal and mechanical contact of each other to form a single system
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- 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
- H01L33/58—Optical field-shaping elements
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- 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
- F21K9/69—Details of refractors forming part of the light source
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
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- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
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- 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
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- H—ELECTRICITY
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- 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
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- G—PHYSICS
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- H—ELECTRICITY
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- 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
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- Crystallography & Structural Chemistry (AREA)
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- Semiconductor Lasers (AREA)
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Description
Claims (13)
- 発光層と、第1のレンズと、熱伝導体とを備える、システムであって、
前記発光層が、ルミネッセンス材料を含み、前記ルミネッセンス材料が、前記ルミネッセンス材料が励起されることが可能な波長λ1を有する、第1のレーザ光源からの光源光で励起されると、ルミネッセンス材料光を生成するように構成されており、前記発光層が、受光領域サイズA1を有する受光領域を含み、
前記第1のレンズが、中心点に対して半径R0を有する湾曲状レンズ表面と、前記中心点から第1の距離d1の所に構成されている平面状レンズ表面とを有する、切頭ボール形状レンズを含み、前記平面状レンズ表面が、平面状レンズ表面領域サイズA2を有し、前記第1のレンズが、UV、可視、及び赤外の波長から選択される所定の波長λ1において屈折率nを有する、レンズ材料を含み、d1=x*R0/nであり、0.9≦x≦1.1であり、前記平面状レンズ表面領域サイズA2が、前記受光領域サイズA1よりも大きく、前記第1のレンズが、前記湾曲状レンズ表面で受光された光を集光して、前記平面状レンズ表面から発する光を供給するように構成されており、前記平面状レンズ表面が、前記受光領域に向けられており、
前記熱伝導体が、前記発光層及び前記第1のレンズのうちの1つ以上と熱接触するように構成されており、
前記システムは、第1の前記光源光を生成するように構成されている前記第1のレーザ光源を更に備え、前記湾曲状レンズ表面が、前記第1のレーザ光源と受光関係で構成されており、前記システムは、前記第1の光源光と異なるか又は等しく、かつ前記ルミネッセンス材料光とは異なるスペクトルパワー分布を有する、第2の光源光を生成するように構成されている、第2の光源を更に備え、前記システムは、前記ルミネッセンス材料光を含む照明システム光を生成するように構成されており、前記システムの動作モードにおいて、前記照明システム光が、前記第2の光源光を更に含む、システム。 - 前記受光領域が、前記平面状レンズ表面から、1~10μmの範囲から選択される平均の第2の距離d2aの所に構成されている、請求項1に記載のシステム。
- 前記受光領域が、前記平面状レンズ表面から、<1μmの範囲から選択される平均の第2の距離d2aの所に構成されている、請求項1に記載のシステム。
- 前記第1のレンズが、前記湾曲状レンズ表面と前記平面状レンズ表面とを含む外表面を有し、前記第1のレンズが、前記平面状レンズ表面を介して前記第1のレンズに入射するルミネッセンス材料光の光線が、前記外表面の第1の外表面部分に直接到達することができないように構成されており、前記熱伝導体が、前記第1の外表面部分を介して前記第1のレンズと熱接触している、請求項1乃至3のいずれか一項に記載のシステム。
- 前記第1のレンズが、前記湾曲状レンズ表面を有するボール部分と、前記平面状レンズ表面を有する円柱部分とを含み、前記円柱部分が、円柱形状又は先細円柱形状を有し、前記熱伝導体が、前記円柱部分と熱接触しているが、前記平面状レンズ表面とは物理的に接触していない、請求項1乃至4のいずれか一項に記載のシステム。
- 前記レンズ材料が、1.4~1.9の範囲から選択される、589.3nmにおける屈折率nを有し、前記レンズ材料が、サファイア、MgO、CaF2、石英、BaF2、M3A5O12ガーネット、ALON、MgAl2O4、及びMgF2のうちの1つ以上を含み、前記熱伝導体が、ヒートシンクを含み、前記発光層が、前記ルミネッセンス材料を含むセラミック体を含み、1.2≦A2/A1≦9である、請求項1乃至5のいずれか一項に記載のシステム。
- 前記発光層が、非受光面を含み、前記非受光面が、前記第1のレンズと受光関係では構成されておらず、前記熱伝導体が、前記発光層の前記非受光面の少なくとも一部分と物理的に接触している、請求項1乃至6のいずれか一項に記載のシステム。
- 前記第1のレーザ光源及び前記第2の光源を制御することによって、前記照明システム光を制御するように構成されている、制御システムを更に備える、請求項1乃至7のいずれか一項に記載のシステム。
- 前記第1の光源が、一緒に前記第1の光源光を生成するように構成されている、複数の固体光源を含み、前記レンズ材料が、サファイアを含む、請求項1に記載のシステム。
- 前記第1の光源から見た場合に、前記第1のレンズから上流に構成されている、非球面集光レンズを含む、第2のレンズを更に備える、請求項1乃至9のいずれか一項に記載のシステム。
- ダイクロイックビームスプリッタ光学素子を更に備え、前記第1の光源が、前記第1の光源光を、前記ビームスプリッタ光学素子を介して、前記第1のレンズの前記湾曲状レンズ表面へ、第1の光路に沿って、第1の方向に供給するように構成されており、前記ビームスプリッタ光学素子が、前記ダイクロイックビームスプリッタ光学素子によって受光されたルミネッセンス材料光を、前記第1の光路と一致しない第2の光路に沿って、第2の方向に向かわせるように構成されている、請求項1乃至10のいずれか一項に記載のシステム。
- 前記システムは、動作モードにおいて白色システム光を供給するように構成されている、請求項1乃至11のいずれか一項に記載のシステム。
- 請求項1乃至12のいずれか一項に記載の照明システムと、オプションとして、前記システム光を成形及び/又は修正するための更なる光学素子とを備える、照明デバイス。
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