JP7479382B2 - レーザベースのファイバ結合白色光システム - Google Patents
レーザベースのファイバ結合白色光システム Download PDFInfo
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- JP7479382B2 JP7479382B2 JP2021541538A JP2021541538A JP7479382B2 JP 7479382 B2 JP7479382 B2 JP 7479382B2 JP 2021541538 A JP2021541538 A JP 2021541538A JP 2021541538 A JP2021541538 A JP 2021541538A JP 7479382 B2 JP7479382 B2 JP 7479382B2
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- white light
- fiber
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- phosphor
- radiation
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Images
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- 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
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Description
本出願は、2019年4月10日に出願された米国特許出願第16/380,217号明細書の一部継続出願であり、この出願は2019年1月18日に出願された米国特許出願第16/252,570号明細書の一部継続出願であり、これら各出願の内容は、全ての目的のためにその全体が参照により本明細書に組み込まれる。
リーキーファイバは、方向性側方散乱によって部分的に白色光を放射して、リーキーファイバの表面の35%を超える光学効率で、25ルーメンより大きい、または50ルーメンより大きい、または150ルーメンより大きい、または300ルーメンより大きい、または600ルーメンより大きい、または800ルーメンより大きい、または1200ルーメンより大きい有効光束を発生するように構成されている。他の実施形態では、輸送ファイバは、コリメートされた白色光を結合し、車両のヘッドライト用のフィーチャ位置に白色光を送達するように構成され、フィーチャ位置に配置されたヘッドライトモジュールは、輸送ファイバから白色光を受け取り、35%を超える光学効率で、150ルーメンより大きい、または300ルーメンより大きい、または600ルーメンより大きい、または800ルーメンより大きい、または1200ルーメンより大きい有効光束を有する白色光のビームを道路上に投影するように構成されたビーム投影ユニットを構成する。
もちろん、図2は単なる一例であり、表面実装パッケージされた白色光源の1つの可能な簡単な構成を示すことを目的としている。
なる。ファイバ設計は、導波路の軸に沿った屈折率の摂動を導入して白色光の散乱を助長する、気泡、ボイド、複合材料、または他の設計を含むことができる。
Claims (25)
- 白色光を放出する透明な蓋部材を有するパッケージを含むレーザベースのファイバ結合白色光システムであって、前記パッケージは、
ガリウムおよび窒素含有材料を含み、励起源として構成されたレーザデバイスであって、385nmから495nmまでの範囲にある第1の波長を有するレーザ電磁放射を出力するように構成された出力ファセットを含む、当該レーザデバイスと、
波長変換器および放射体として構成された蛍光体部材であって、レーザ電磁放射が前記蛍光体部材の主表面に光学的に結合されるように配置された当該蛍光体部材と、
前記レーザ電磁放射のビームと前記蛍光体部材の前記主表面との間に構成されたビーム入射角であって、前記蛍光体部材が、前記主表面上の5μmよりも大きいスポットに到達した前記第1の波長を有する前記レーザ電磁放射の少なくとも一部を、前記第1の波長よりも長い第2の波長を有する蛍光体放射に変換するように構成された、入射角と、
前記レーザ電磁放射と前記主表面から放射される前記蛍光体放射との相互作用から白色光放射を生成するように、前記蛍光体部材を特徴付ける反射モードであって、前記白色光放射が、少なくとも前記蛍光体部材からの前記第2の波長によって特徴付けられる波長の混合からなる、当該反射モードと、
レーザデバイスおよび/または蛍光体部材を支持するように構成された支持部材と、
白色光放射を送達または分配するために少なくとも20%の効率で白色光放射を捕捉するために蛍光体部材に結合されたファイバと、
前記パッケージの外縁の周りに延在し、前記ファイバの第1の端部に結合されるカバーであって、前記ファイバの前記第1の端部は、前記カバーの第1の開口を通して延び、前記パッケージの底部が前記カバーの外側に露出するように、前記パッケージは、前記カバーの第2の開口内に配置される、当該カバーと、
を含む、レーザベースのファイバ結合白色光システム。 - 前記パッケージは、表面実装デバイス(SMD)型パッケージ、フラットパッケージ、TO9缶、TO56缶、TO-5缶、TO-46缶、CSマウント、Gマウント、Cマウント、またはマイクロチャンネル冷却パッケージである、請求項1に記載の白色光システム。
- 前記パッケージは密閉されたパッケージである、請求項1に記載の白色光システム。
- 前記レーザデバイスは、前記ファイバに結合され、10ルーメンより大きい、100ルーメンより大きい、500ルーメンより大きい、1000ルーメンより大きい、2000ルーメンより大きい、または、前記白色光放射の少なくとも20%、40%、60%または80%より大きい白色光放射のルーメンをもたらす複数のレーザダイオードを含む、請求項1に記載の白色光システム。
- 前記レーザデバイスからの第1の波長は紫または青の色範囲を含み、蛍光体部材からの第2の波長は黄色の色範囲を含む、請求項1に記載の白色光システム。
- 前記蛍光体部材は、赤、緑、黄色、および/または青の色の蛍光体放射を放出するように構成され、異なる明るさの異なるレーザ放射と組み合わせて使用され、異なる色の混合物で白色光放射を制御可能に生成するように構成される、複数の蛍光体部材の混合物を含む、請求項1に記載の白色光システム。
- 前記蛍光体部材は、Ceをドープしたセラミックイットリウム・アルミニウム・ガーネット(YAG)またはCeをドープした単結晶YAG、またはバインダ材料を含む粉末YAGから構成され、蛍光体部材は、1光学的ワット当たり50ルーメンよりも大きい、1光学的ワット当たり100ルーメンより大きい、1光学的ワット当たり200ルーメンより大きい、または1光学的ワット当たり300ルーメンより大きい光変換効率を有する、請求項1に記載の白色光システム。
- 前記蛍光体部材は、0.01%から10%の原子濃度でCe3+イオンを包含する、ランタン窒化ケイ素化合物およびランタンアルミニウムケイ素窒素酸化物化合物から選択される単結晶プレートまたはセラミックプレートから構成される、請求項1に記載の白色光システム。
- 前記白色光放射を前記ファイバに集束させ、白色光放射を捕捉するために、前記蛍光体部材とファイバの入力端との間に配置された光学部材をさらに含む、請求項1に記載の白色光システム。
- 5から50度の円錐角で開口数0.05から0.7のファイバの出力端を出る白色光放射を成形および/またはコリメートするように構成されたライトヘッド部材をさらに備える、請求項1に記載の白色光システム。
- 前記ファイバは、入力端から出力端に白色光放射を輸送するために、1メートルあたり50%より大きいまたは90%より大きい透過率を有するシングルモードまたはマルチモードのガラスファイバを含むか、またはファイバは白色光放射を入力端から出力端に輸送するための透過率が1メートルあたり50%より大きいプラスチックファイバを含む、請求項1に記載の白色光システム。
- 前記ファイバは、リーキーファイバの外面から分散光源としてファイバの長さの少なくとも一部を通して白色光放射がリークすることを可能にする長さのリーキーファイバを含み、前記リーキーファイバは白色光放射を、外面全体から、または特に外面の片側から実質的に均一にリークアウトさせるように構成される、請求項1に記載の白色光システム。
- 前記ファイバは、レンズ付きファイバを含む、請求項1に記載の白色光システム。
- 前記ファイバは、フラットパネル基板の平面導波路として構成される、請求項1に記載の白色光システム。
- 前記支持部材は、前記レーザデバイスに電気的接続を提供する電子ボード、前記レーザ電磁放射を変調するためのドライバ、およびサーミスタおよび光検出器を含む1つまたは複数のセンサを備える、請求項1に記載の白色光システム。
- 前記白色光放射は、少なくとも250ルーメン、少なくとも500ルーメン、少なくとも1000ルーメン、少なくとも3000ルーメン、または少なくとも10,000ルーメンを特徴とする、請求項1に記載の白色光システム。
- 離れた場所に配置され、白色光放射を受け取るためにファイバに結合された分散光源を含み、前記分散光源は、リーキーファイバの外面全体から、または特にリーキーファイバの外面の片側から均一に白色光放射を実質的にリークアウトさせるための、ある長さのリーキーファイバを含む、請求項1に記載の白色光システム。
- 白色光を放出する透明な蓋部材を有するパッケージを含むレーザベースのファイバ結合白色光システムであって、前記パッケージは、
ガリウムおよび窒素含有材料を含み、励起源として構成されたレーザデバイスであって、385nmから495nmまでの範囲にある第1の波長を有するレーザ電磁放射を放射するように構成された出力ファセットを含む、当該レーザデバイスと、
波長変換器および放射体として構成された蛍光体部材であって、レーザ電磁放射が前記蛍光体部材の受信面に光学的に結合されるように配置された当該蛍光体部材と、
前記レーザ電磁放射のビームと前記蛍光体部材の前記受信面との間に構成されたビーム入射角であって、前記蛍光体部材が、前記第1の波長を有する前記レーザ電磁放射の少なくとも一部を、前記第1の波長よりも長い第2の波長を有する蛍光体放射に変換するように構成された、入射角と、
前記レーザ電磁放射のビームが蛍光体部材の受信面に入射し、前記蛍光体放射が主に蛍光体部材を透過して、受信面とは反対の放射面から出るように、蛍光体部材を特徴付ける透過モードと、
少なくとも前記蛍光体部材からの前記第2の波長によって特徴付けられる波長の混合物からなり、前記蛍光体部材の前記放射表面から放射した、白色光放射と、
レーザデバイスおよび/または蛍光体プレートを支持するように構成された支持部材と、
白色光放射を送達または分配するために少なくとも20%の効率で白色光放射を捕捉するために蛍光体部材に結合されたファイバと、
前記パッケージの外縁の周りに延在し、前記ファイバの第1の端部に結合されるカバーであって、前記ファイバの前記第1の端部は、前記カバーの第1の開口を通して延び、前記パッケージの底部が前記カバーの外側に露出するように、前記パッケージは、前記カバーの第2の開口内に配置される、当該カバーと、
を含む、レーザベースのファイバ結合白色光システム。 - 前記パッケージは、表面実装デバイス(SMD)型パッケージ、フラットパッケージ、TO9缶、TO56缶、TO-5缶、TO-46缶、CSマウント、Gマウント、Cマウント、またはマイクロチャンネル冷却パッケージである、請求項18に記載のファイバ結合白色光源。
- 前記レーザ電磁放射は、紫または青のスペクトル範囲の第1の波長によって特徴付けられ、蛍光体放射の第2の波長は、黄色のスペクトル範囲にあり、前記白色光放射は、第1の波長および第2の波長からなる、請求項18に記載のファイバ結合白色光源。
- 前記蛍光体プレートは、Ceをドープしたセラミックイットリウム・アルミニウム・ガーネット(YAG)またはCeをドープした単結晶YAG、またはバインダ材料を含む粉末YAGから構成され、前記蛍光体プレートは、1光学的ワット当たり50ルーメンよりも大きい、1光学的ワット当たり100ルーメンより大きい、1光学的ワット当たり200ルーメンより大きい、または1光学的ワット当たり300ルーメンより大きい光変換効率によって特徴付けられる、請求項18に記載のファイバ結合白色光源。
- 結合光学部材は、前記蛍光体部材とファイバの入力端との間に配置され、白色光放射を補足し、40%より大きい、または60%より大きいカップリング率で補足された白色光放射をファイバの入力ファセットに集束する、当該結合光学部材をさらに含む、請求項18に記載のファイバ結合白色光源。
- 前記白色光放射は、少なくとも250ルーメン、少なくとも500ルーメン、少なくとも1000ルーメン、少なくとも3000ルーメン、または少なくとも10,000ルーメンの光束によって特徴付けられる、請求項18に記載のファイバ結合白色光源。
- 前記ファイバは、1メートルあたり50%より大きいまたは90%より大きい透過率で、入力端から任意の長さで出力端に白色光放射を輸送するために、シングルモードまたはマルチモードのガラスファイバまたはプラスチックファイバを含み、5から50度の円錐角で開口数0.05から0.7のファイバの出力端を出る白色光放射を結合するように構成された、成形光学部材をさらに備える、請求項18に記載のファイバ結合白色光源。
- 前記ファイバは、分散光源のエンクロージャコンポーネントにおいて、ファイバの外部表面全体から、またはファイバの外部表面の特定の側からの側方散乱のための特定の長さのリーキーファイバを含む、請求項18に記載のファイバ結合白色光源。
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US16/252,570 US11884202B2 (en) | 2019-01-18 | 2019-01-18 | Laser-based fiber-coupled white light system |
US16/252,570 | 2019-01-18 | ||
US16/380,217 | 2019-04-10 | ||
US16/380,217 US12000552B2 (en) | 2019-04-10 | Laser-based fiber-coupled white light system for a vehicle | |
PCT/US2020/014476 WO2020150742A1 (en) | 2019-01-18 | 2020-01-21 | Laser-based fiber-coupled white light system |
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WO2020150742A1 (en) | 2020-07-23 |
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