JP6818168B2 - 集光器モジュール - Google Patents
集光器モジュール Download PDFInfo
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- JP6818168B2 JP6818168B2 JP2019572390A JP2019572390A JP6818168B2 JP 6818168 B2 JP6818168 B2 JP 6818168B2 JP 2019572390 A JP2019572390 A JP 2019572390A JP 2019572390 A JP2019572390 A JP 2019572390A JP 6818168 B2 JP6818168 B2 JP 6818168B2
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- light
- elongated
- luminescence
- radiation
- light transmissive
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Images
Classifications
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- 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
- G02B6/0003—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 doped with fluorescent agents
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- G02B6/0005—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 of the fibre type
- G02B6/0006—Coupling light into the fibre
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- 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
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- G02B6/0005—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 of the fibre type
- G02B6/0008—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 of the fibre type the light being emitted at the end of the fibre
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- 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
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- G02B6/0096—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the lights guides being of the hollow type
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- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B21/00—Projectors or projection-type viewers; Accessories therefor
- G03B21/14—Details
- G03B21/20—Lamp housings
- G03B21/208—Homogenising, shaping of the illumination light
-
- 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
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/40—Lighting for industrial, commercial, recreational or military use
- F21W2131/406—Lighting for industrial, commercial, recreational or military use for theatres, stages or film studios
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Planar Illumination Modules (AREA)
- Light Guides In General And Applications Therefor (AREA)
- Optical Filters (AREA)
Description
1.ルミネッセンスロッドは、例えば、後続の研削及び研磨を伴う切断によって大きな単結晶体から製造される場合があり、非常に高い加工コストをもたらす。
2.ロッドの4つの側部に関連する4つのエスケープコーンにより、光損失が比較的多い。
3.他の用途は、光源の他の形状の発光表面領域を必要とする。これは、例えば、(例えば、顕微鏡照明のために)(円形の)光ファイバへの効率的なインカップリングのために、又は(画像の追加投影による)照明へのコンテンツ追加のために、スポットランプの場合に円形ビームが好まれるからである。
4.矩形ロッドの位置決めが困難である。これは、適度に高いカップリング効率を達成するために、矩形ロッドがポンプLEDから非常に近い距離に取り付けられる必要があるからである。
5.ポンプLEDの最大輝度が、複数のチップスケールパッケージLEDのアレイによって達成され得、これらのダイは全て、トップ放出に隣接するサイド放出を示すので、横方向に放出された光の比較的高い損失により、カップリング効率の固有の不利益が存在する。
6.光源スペクトルを全体的に調整するためにスペクトル的に異なる変換器を適用するのは、変換器の配置に関する実際的な問題により、非常に緻密である。
−変換器の線形空洞内にポンプLED及び/又はレーザダイオードを埋め込むこと(及びそれによって、ルミネッセンス変換器へのポンプ光のカップリング効率を向上させる)、
−高輝度モジュール内に変換器本体を位置決め/位置合わせすること、
−ポンプLED及び/又はレーザダイオードから変換器までの距離を規定すること(例えば、ルミネッセンス変換器内へのポンプ光のカップリング効率を最適化するために、及び/又はルミネッセンス変換器からLDのLEDを経てヒートシンクに至る熱伝達を最適化するため)、
光抽出コーンを4つから2つに減らし、光損失を減らし、よってモジュール性能を高めること、
−複数の変換器を互いに隣接して又は互いの内部に取り付け、光源出力のスペクトル調整を可能にすること、
−ルミネッセンス変換器に対してポンプLED又はポンプLDを位置合わせすること、
−ルミネッセンス変換器からポンプLED又はポンプLDの基材への熱伝達(を制御すること)、
−ルミネッセンス変換器からポンプLED又はポンプLDを経てヒートシンクに至る熱伝達(を制御すること)(これらの構成要素間の熱接触を確実にすることによる)。
−細長い光透過性本体は、細長い光透過性本体の長さ(L)を規定する第1の面及び第2の面を有し、第2の面は、第1の放射出射窓を有し、
−第1の反射器は、第1の面に構成され、放射を反射して細長い光透過性本体に戻すように構成され、
−第2の反射器は、放射出射窓よりも小さな断面を有し、第2の反射器は、放射を反射して光透過性本体に戻すように構成される。
−光源光を供給するように構成された光源と、
−本明細書に規定されるルミネッセンス要素と、を備え、細長い光透過性本体が、放射入力面及び第1の放射出射窓を有し、ルミネッセンス材料が、放射入力面で受光された光源光の少なくとも一部をルミネッセンス材料放射に変換するように構成されており、ルミネッセンス要素が、ルミネッセンス材料放射の少なくとも一部を第1の放射出射窓で変換器放射としてアウトカップルするように構成されている、照明デバイスを提供する。
I.4つの長側面のうちの1つを直接透過したコーンの非TIR光。
II.ロッドの長軸(z軸)と位置合わせされたコーンの光、この光は、CPCに当たるまでロッド内でTIR状態にあるので、TIR−突端光と呼ばれることがあり、CPCを透過する。CPCに入る光線は、n_rod−n_CPCの組み合わせを保持する臨界TIR角度よりも小さい、z軸との角度を有する。尾部に向けられたコーンの光は、TIRによって、又はミラーによって尾部で反射し、またCPCにてロッドから離れる。
III.残りの光部分は、TIR状態にあり、理論上は完全にロッド内にあり、これらの光線はロッドから出ることができない。この部分は、(閉じ込め症候群にちなんで)閉じ込められたTIR光と呼ばれることがある。
−中実ロッド:外部断面が円形、卵形、又は楕円形、吸収長≦0.4ロッド半径となるのに十分な蛍光体含有量を有する、あるいは、
−断面が円形、卵形、又は楕円形、内側半径≧0.6外側半径を有するなど、限定された壁厚を有する、管状ロッド、吸収長≦壁厚となるのに十分な蛍光体含有量を有する。
−光源光11を供給するように構成された光源10と、
−先行する請求項のいずれか一項に記載のルミネッセンス要素5と、を備え、細長い光透過性本体100は、放射入力面111及び第1の放射出射窓112を有し、ルミネッセンス材料120は、放射入力面111で受光された光源光11の少なくとも一部をルミネッセンス材料放射8に変換するように構成されており、ルミネッセンス要素5は、ルミネッセンス材料光8の少なくとも一部を第1の放射出射窓112で変換器放射101としてアウトカップルするように構成されている。
Claims (15)
- 光源光を供給するように構成された光源と、
細長い光透過性本体を備えるルミネッセンス要素であって、前記細長い光透過性本体が側面を有する、ルミネッセンス要素と、を備える照明デバイスであって、
前記細長い光透過性本体が、UV、可視光、及びIRのうちの1つ以上から選択された、前記細長い光透過性本体によって受光された光源光の少なくとも一部をルミネッセンス材料放射に変換するように構成されたルミネッセンス材料を含み、
前記側面が、半径rを有する曲率を有し、
前記細長い光透過性本体が、放射入力面及び第1の放射出射窓を有し、前記ルミネッセンス材料が、前記放射入力面で受光された光源光の少なくとも一部をルミネッセンス材料放射に変換するように構成されており、前記ルミネッセンス要素が、内部全反射によって前記ルミネッセンス材料放射の少なくとも一部を前記第1の放射出射窓に誘導し、前記ルミネッセンス材料放射の少なくとも一部を前記第1の放射出射窓で変換器放射としてアウトカップルするように構成されており、
前記細長い光透過性本体が、前記細長い光透過性本体の長さを規定する第1の面及び第2の面を有し、前記側面が前記放射入力面を有し、前記第2の面が前記放射出射窓を有し、
前記ルミネッセンス材料の密度は、前記光源光の少なくとも80%が前記側面から第1の長さx内で吸収されるように選択され、x/r≦0.4が適用される、照明デバイス。 - 前記半径rは、0.25〜50mmの範囲から選択される、請求項1に記載の照明デバイス。
- 前記ルミネッセンス材料の密度は、青色の光の少なくとも90%が、前記側面から前記第1の長さx内で吸収されるように選択され、x/r≦0.4が適用され、前記第1の長さxは、5mm以下である、請求項1又は2に記載の照明デバイス。
- 前記側面は、凸形状を有する、請求項1乃至3のいずれか一項に記載の照明デバイス。
- 前記細長い光透過性本体は、前記細長い光透過性本体によって囲まれた空洞を有する管形状を有する、請求項1乃至4のいずれか一項に記載の照明デバイス。
- 前記空洞の少なくとも一部が、前記細長い光透過性本体の光透過性材料の組成とは組成が異なる光透過性材料を含み、前記空洞内の前記光透過性材料は、前記細長い光透過性本体の前記光透過性材料以下の屈折率を有する、請求項5に記載の照明デバイス。
- 前記細長い光透過性本体は、伸長軸と、前記伸長軸と垂直な円形断面とを有する、請求項1乃至4のいずれか一項に記載の照明デバイス。
- 前記第1の面及び前記第2の面の1つ以上が、表面変調を含む平面を有し、それによって、それぞれの前記平面に対する異なる変調角度を作り出している、請求項1乃至7のいずれか一項に記載の照明デバイス。
- 前記表面変調は、半径方向よりも接線方向の反射を促進するように構成されている、請求項8に記載の照明デバイス。
- 前記細長い光透過性本体に光学的に結合された光学要素を更に備える、請求項1乃至9のいずれか一項に記載の照明デバイス。
- 前記細長い光透過性本体と前記光学要素は、単一体である、請求項10に記載の照明デバイス。
- 前記光学要素は、複合放物面集光器、適合された複合放物面集光器、ドーム、楔形構造、及び円錐形構造からなる群から選択され、前記細長い光透過性本体は、押出成形、射出成形、プレス成形、及び注入成形のうちの1つ以上と、焼結と、を含むプロセスによって得ることができる、請求項10又は11に記載の照明デバイス。
- x/r≦0.3である、請求項1乃至12のいずれか一項に記載の照明デバイス。
- 光学要素を更に備え、前記光学要素は、前記ルミネッセンス放射をコリメートすること、及び前記細長い光透過性本体からルミネッセンス放射を抽出することのうちの1つ以上を行うように構成されており、前記光学要素は、前記細長い光透過性本体に光学的に結合されるか、又は前記光学要素と前記細長い光透過性本体は、単一体によって構成されている、請求項1乃至13のいずれか一項に記載の照明デバイス。
- 請求項1乃至14のいずれか一項に記載の照明デバイスを備える、投影システム又は照明器具。
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