JP2021530743A - 磁化可能な粒子を有する光制御構造体を有するデバイス - Google Patents
磁化可能な粒子を有する光制御構造体を有するデバイス Download PDFInfo
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- JP2021530743A JP2021530743A JP2021502473A JP2021502473A JP2021530743A JP 2021530743 A JP2021530743 A JP 2021530743A JP 2021502473 A JP2021502473 A JP 2021502473A JP 2021502473 A JP2021502473 A JP 2021502473A JP 2021530743 A JP2021530743 A JP 2021530743A
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Abstract
Description
「1つの(a)」、「1つの(an)」、及び「その(the)」という用語は、「少なくとも1つの」と交換可能に使用され、記載されている要素のうちの1つ又は複数を意味する。
θlouver optimal=|θlatitude−θroof pitch|
本開示の範囲内における多数の修正及び変形が当業者には明らかであろうから、以下の実施形態及び実施例は単に例示を意図している。特に記載のない限り、以下の実施例で報告される全ての部、百分率、及び比率は、重量基準である。
試料は、(メタ)アクリレート樹脂の混合物を含む結合マトリックス中に分散された磁性粒子を含む。
実施例1は、比較例1と同様の光学性能を有する例示的なLCFを表す。Permalloy(Permalloy Flake Powder;供給元:Novamet Specialty Product Corporation(Lebanon,TN))の10%混合物をマトリックス樹脂Hに導入した(表1参照)。混合物を好適な基材上にコーティングした。磁気整列及び硬化を、前述した方法と整合する形態で実施した。
角度透過率は、回転ステージ(供給元:Oriel Instaspec Spectrograph;角度透過率測定のために試料を平面から外れるように回転させることが可能なステージを有し、Labsphere LPS−100電源によって制御されたランプで照射した)を用いて分光光度計で測定した。ステージを、0°から60°まで15°刻みで回転させ、ステージの回転毎に測定した。これらの測定値から、400nm〜700nmにおける平均可視透過率を計算し、入射角の関数としてプロットした。図12は、実施例1、実施例2、及び比較例1のLCFの可視波長透過率のプロットを表す。可視波長透過率は、400nm〜700nmにわたる透過率の算術平均であり、RBRが図12にプロットされている。実施例2は、実施例1及び比較例1よりも制限された視野角を有するように意図的に設計された。傾いていないルーバー構造体については、RBRは、内部光線経路がルーバー構造体に平行にされているとき、0度の入射角で最大である。実施例1のルーバー構造体は、全ての角度において、比較例1の微細構造化LCFと同様のRBRをもたらした。
Keyence VHX−2000顕微鏡をVH Z1000URレンズと共に使用して、顕微鏡スライドにわたる3つの異なる位置において、実施例3のLCFのルーバー間隔を画像化した。図13は、LCFにわたる、各厚さの場所(A(61μm)、B(209μm)、C(343μm))の顕微鏡画像を示す。ルーバー間隔は、層厚が増加するにつれて大きくなる。所与の粒子濃度に対して、ルーバー間隔は、LCFの厚さを変化させることによって制御することができる。
Keyence VHX−2000顕微鏡をVH Z1000URレンズと共に使用して、実施例4〜8のLCFについてルーバーを画像化した。図14に、実施例5、6、及び7の画像を示す。顕微鏡画像をカスタム画像処理ソフトウェアで処理した。これらの画像から、画像の各列において個々のルーバー(暗い領域)を判定し、画像にわたる各列についての間隔を平均化することにより、平均ルーバー間隔を決定した。
Keyence VHX−2000顕微鏡をVH Z1000URレンズと共に使用して、実施例9〜12のLCFについてルーバーを画像化した。図16は、実施例9〜12のLCFの画像を示す。ルーバーは、より連続的であり、マトリックス粘度がより大きい場合と比較して、マトリックス粘度がより低い場合に、より良好に整列しているように見える。
Keyence VHX−2000顕微鏡をVH Z1000URレンズと共に使用して、実施例13〜15のLCFについてルーバーを画像化した。図17Aは、実施例13〜15のLCFの画像を示す。ルーバーは、より連続的であり、厚さがより大きい場合と比較して、厚さがより小さい場合に、より良好に整列しているように見える。図15について論じたものと同じコンピュータプログラムを使用すると、ルーバー構造体の平均長さ(すなわち、例えば図1、図2A、図2B、図3B、図3Cのページの中へと延びる、ルーバー構造体の最長寸法)は、実施例13については643μm、実施例14については239μm、及び実施例15については199μmである。
角度透過率を、回転ステージを有する分光光度計(供給元:Oriel Instaspec Spectrograph;上記参照)を用いて測定した。ステージを、0°から60°まで15°刻みで回転させ、ステージの回転毎に測定した。これらの測定値から、400nm〜700nmにおける平均可視透過率を計算し、RBRを入射角の関数としてプロットした。図18は、実施例16、17のLCF、及び比較例1についてのRBRのプロットを表す。
Claims (41)
- 封入材中に配置された1つ以上の光起電力セルと、
一連のルーバー構造体を有するルーバーフィルムを含む光制御構造体であって、各ルーバー構造体は、複数の磁化可能な粒子の1つ以上のグループを含み、前記複数の磁化可能な粒子は、結合マトリックス中に分散され、少なくとも第1の配向にて整列されており、
前記光制御構造体は、第1の角度で入射する光を実質的に透過させ、第2の角度で入射する光の透過を実質的に制限し、
各ルーバー構造体は、隣り合うルーバー構造体から離され、各ルーバー構造体は、隣り合うルーバー構造体に実質的に平行な平面内で実質的に整列されている、光制御構造体と、を備える、ソーラーデバイス。 - 各ルーバー構造体が、前記光制御構造体の光入射面の法線から約0°〜約50°のルーバー角度にて配向されている、請求項1に記載のソーラーデバイス。
- 各ルーバー構造体が、約0°〜約40°のルーバー角度にて配向されている、請求項1又は2に記載のソーラーデバイス。
- 各ルーバー構造体が、約0°〜約30°のルーバー角度にて配向されている、請求項1〜3のいずれか一項に記載のソーラーデバイス。
- 各ルーバー構造体が、約10°〜約30°のルーバー角度にて配向されている、請求項1〜4のいずれか一項に記載のソーラーデバイス。
- 前記光制御構造体は、少なくとも50%である最大相対輝度比(RBR)を有する、請求項1〜5のいずれか一項に記載のソーラーデバイス。
- 前記光制御構造体は、可視スペクトルの一部分を選択的に吸収する、請求項1〜6のいずれか一項に記載のソーラーデバイス。
- 前記磁化可能な粒子の少なくとも一部分が、可視スペクトルの1つ以上の選択的波長を反射させる、請求項1〜7のいずれか一項に記載のソーラーデバイス。
- 前記複数の磁化可能な粒子は、磁化可能な粒子の複数のグループを含み、粒子の各グループが、隣り合うグループから約0.05mm〜約5mm離されている、請求項1〜8のいずれか一項に記載のソーラーデバイス。
- 前記磁化可能な粒子は、セラミック、金属合金粉末、金属合金、磁化可能となるようにコーティングされたガラス粒子、磁化可能となるようにコーティングされた雲母粒子、複合材、及びこれらの組み合わせからなる群から選択される1つ以上の粒子を含む、請求項1〜9のいずれか一項に記載のソーラーデバイス。
- 前記磁化可能な粒子は、内部に配置された磁化可能な部分を有する材料を含む、請求項1〜10のいずれか一項に記載のソーラーデバイス。
- 前記磁化可能な粒子は、前記磁化可能な粒子の1つ以上の表面の上の層として配置された磁化可能な部分を有する、請求項1〜11のいずれか一項に記載のソーラーデバイス。
- 前記磁化可能な粒子は、フレーク、破砕粒子、集塊物、及びこれらの組み合わせのうちの少なくとも1つを含む、請求項1〜12のいずれか一項に記載のソーラーデバイス。
- 前記結合マトリックスは、無機ガラス質バインダーを含む、請求項1〜13のいずれか一項に記載のソーラーデバイス。
- 前記結合マトリックスは、樹脂を含む、請求項1〜14のいずれか一項に記載のソーラーデバイス。
- 前記封入材は、EVA系封入材及びポリオレフィン系封入材のうちの1つを含む、請求項1〜15のいずれか一項に記載のソーラーデバイス。
- 前記デバイスは、前記光起電力セルの両方の主表面上に配置された封入材を含む、請求項1〜16のいずれか一項に記載のソーラーデバイス。
- カバー層及びバックシート層を更に備え、封入された前記光起電力セルは、前記バックシート層と前記カバー層との間に配置されている、請求項1〜17のいずれか一項に記載のソーラーデバイス。
- 前記カバー層は、ガラス及び超バリアフィルムのうちの1つを含む、請求項18に記載のソーラーデバイス。
- 前記カバー層及びバックシート層は、異なる材料から形成されている、請求項18に記載のソーラーデバイス。
- 前記光制御構造体は、前記カバー層を前記封入材に接合させる接着剤として形成されている、請求項18〜20のいずれか一項に記載のソーラーデバイス。
- 前記カバー層は、前記光制御構造体と前記封入材との間に配置されている、請求項18〜20のいずれか一項に記載のソーラーデバイス。
- 前記ソーラーデバイスの縁部を覆うフレームを更に備える、請求項1〜22のいずれか一項に記載のソーラーデバイス。
- 前記ソーラーデバイスは、ソーラー屋根パネルを含む、請求項1〜23のいずれか一項に記載のソーラーデバイス。
- 前記ソーラーデバイスは、屋根タイルを有する屋根に設置され、前記ソーラーデバイスは、屋根タイル色と実質的に一致する可視色を有する、請求項24に記載のソーラーデバイス。
- 前記ルーバー角度は、前記ソーラーデバイスが設置される屋根のピッチに少なくとも部分的に基づいて選択される、請求項24に記載のソーラーデバイス。
- 一連のルーバー構造体を有する光制御フィルムであって、各ルーバー構造体は、複数の磁化可能な粒子の1つ以上のグループを含み、前記複数の磁化可能な粒子は、結合マトリックス中に分散され、少なくとも第1の配向にて整列されており、
前記光制御フィルムは、第1の角度で入射する光を実質的に透過させ、第2の角度で入射する光の透過を実質的に制限し、
各ルーバー構造体は、隣り合うルーバー構造体から離され、各ルーバー構造体は、隣り合うルーバー構造体に実質的に平行な平面内で整列されている、光制御フィルム。 - 光入力面に入射した光は、主視野軸方向における最大相対輝度比(RBR)が50%以上であり、有効極視野角(EPVA)が150°以下で、光出力面から出る、請求項27に記載の光制御フィルム。
- 前記光入力面に入射した光が、前記主視野軸方向における最大相対輝度比(RBR)が60%以上で、前記光出力面から出る、請求項28に記載の光制御フィルム。
- 前記光入力面に入射した光が、前記主視野軸方向における最大相対輝度比(RBR)が80%以上で、前記光出力面から出る、請求項29に記載の光制御フィルム。
- 最大相対輝度比(RBR)となる入射角が、80°以下である、請求項27〜30のいずれか一項に記載の光制御フィルム。
- 最大相対輝度比(RBR)となる入射角が、10°超かつ80°未満である、請求項27〜31のいずれか一項に記載の光制御フィルム。
- 封入材中に配置された1つ以上の光起電力セルと、
請求項28〜32のいずれか一項に記載の第1の光制御フィルムと、を備える、ソーラーデバイス。 - 請求項27〜32のいずれか一項に記載の第2の光制御フィルムを更に備え、前記第2の光制御フィルム用のルーバー構造体が、前記第1の光制御フィルムの前記ルーバー構造体に対して10°〜90°の角度にて配向されている、請求項33に記載のソーラーデバイス。
- 封入材中に配置された1つ以上の光起電力セルと、
第1の光制御フィルム及び第2の光制御フィルムであって、各光制御フィルムが、請求項27〜32のいずれか一項に記載の構造体を有し、前記第1の光制御フィルムは、前記第1の光制御フィルム用の実質的に平行な前記ルーバー構造体が、前記第2の光制御フィルム用の実質的に平行な前記ルーバー構造体に対して10°〜90°の角度で斜めになるように、前記第2の光制御フィルムに対して配向されている、第1の光制御フィルム及び第2の光制御フィルムと、を備える、ソーラーデバイス。 - 光入力面に入射した光は、有効極視野角(EPVA)が150°以下で、光出力面から出る、請求項27に記載の光制御フィルム。
- 前記光入力面に入射した光は、有効極視野角(EPVA)が115°以下で、前記光出力面から出る、請求項28に記載の光制御フィルム。
- 複数の磁化可能な粒子からなる光制御フィルムであって、前記複数の磁化可能な粒子は、結合マトリックス中で配列されかつ整列されて光透過領域及び遮光領域を交互に有するルーバーフィルムを形成し、前記遮光領域は、約0°〜約40°のルーバー角度にて整列されている、光制御フィルム。
- 光入射面の法線に対して非ゼロのルーバー角度を有するルーバー構造体を備える光制御フィルムであって、EPVAは、最大相対輝度比となる入射角を中心として非対称である、光制御フィルム。
- 結合マトリックス中で配列されかつ整列されて前記ルーバー構造体を形成する複数の磁化可能な粒子を含む、請求項39に記載の光制御フィルム。
- 光入射面の法線に対して非ゼロのルーバー角度を有するルーバー構造体を備える光制御フィルムであって、前記光入射面の法線との、RBRとなる入射角が、第1の側において70°より大きく、第2の側において70°未満である、光制御フィルム。
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US (2) | US11911791B2 (ja) |
JP (2) | JP2021530742A (ja) |
CN (2) | CN112424955A (ja) |
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US11911791B2 (en) | 2018-07-18 | 2024-02-27 | 3M Innovative Properties Company | Device with light control structure having magnetizable particles |
US11427026B1 (en) | 2021-03-23 | 2022-08-30 | Viavi Solutions Inc. | Orienting magnetic flakes within a binder layer |
AU2021229201B1 (en) * | 2021-09-08 | 2022-10-06 | Yaue-Sheng Chang | Solar panel for pitched roof and construction method thereof |
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- 2019-07-18 CN CN201980046997.5A patent/CN112639585A/zh active Pending
- 2019-07-18 JP JP2021502472A patent/JP2021530742A/ja active Pending
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US20210273126A1 (en) | 2021-09-02 |
JP2021530742A (ja) | 2021-11-11 |
US11911791B2 (en) | 2024-02-27 |
CN112639585A (zh) | 2021-04-09 |
CN112424955A (zh) | 2021-02-26 |
US20210294002A1 (en) | 2021-09-23 |
WO2020018771A1 (en) | 2020-01-23 |
US20230411547A1 (en) | 2023-12-21 |
WO2020018794A1 (en) | 2020-01-23 |
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