JP2009542361A - 光学材料および屈折率を修正する方法 - Google Patents
光学材料および屈折率を修正する方法 Download PDFInfo
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- JP2009542361A JP2009542361A JP2009518456A JP2009518456A JP2009542361A JP 2009542361 A JP2009542361 A JP 2009542361A JP 2009518456 A JP2009518456 A JP 2009518456A JP 2009518456 A JP2009518456 A JP 2009518456A JP 2009542361 A JP2009542361 A JP 2009542361A
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- optical
- laser
- refractive index
- lens
- acrylate
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Landscapes
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Abstract
Description
選択領域内で材料の屈折率を修正するべくレーザーを光学高分子材料に照射するためのレーザー系10の非限定的な実施形態が、図7に示されている。レーザー源には、周波数倍増Nd:YVO4レーザー14の4Wにより励起されたKerr−レンズのモードロックされたTi:サファイアレーザー12(コロラド州ボルダー(Boulder,Colorado)のカプテイン・マーナン・ラボ(Kapteyn−Murnane Labs))が含まれる。レーザーは、300mWの平均出力、パルス幅30fsおよび800nmの波長で93MHzのくり返し率のパルスを生成する。光学経路内にミラーおよびプリズム由来の、そして特に対物レンズ20の出力損失による反射能損失が存在することから、材料上の対物レンズ焦点における測定上の平均レーザー出力は約120mWであり、これは、フェムト秒レーザーについてのパルスエネルギーが約1.3nJであることを表わしている。
本出願中で記述されている方法にしたがって可視または近赤外レーザーでの照射を受けることのできる光学高分子材料は、ポリマーレンズ技術の当業者、特に眼内レンズを作製するために用いられる光学材料の当業者にとって公知のあらゆる光学高分子材料であり得る。この光学高分子材料は充分な光学的透明度をもつものであり、およそ1.40以上の比較的高い屈折率を有する。これらの材料の多くが同様に、およそ80パーセント以上の相対的に高い伸びをもその特徴としている。
式中、
Rが、HまたはCH3であり;mが0〜10であり;
Yが、無、O、SまたはNRであり、ここでRはH、CH3、CnH2n+1(n=1〜10)、イソOC3H7、フェニルまたはベンジルであり;
Arが、H、CH3、C2H5、n−C3H7、イソ−C3H7、OCH3、C6H11、Cl、Br、フェニルまたはベンジルで置換されるかまたは未置換であり得る、ベンゼンといった任意の芳香環であるモノマー;および、
重合可能で、エチレン不飽和の複数の基を有する架橋モノマーからも調製可能である。光学材料は、37℃以下のガラス転移温度と少なくとも150%の伸びを有する。
光学材料の選択領域内でライン構造を形成するために、記述された光学系を使用した。3つのポリマー材料(ニューヨーク州ロチェスター(Rochester,New York)のボシュロム・インコーポレーテッド(Bausch & Lomb Incorporated))すなわち、PV2526−164、RD1817およびHEMA Bを用いて実験を行なった。PV2526−164は、(合計重量で)約36%の水を吸収できるシリコーン含有ヒドロゲルである。RD1817は、約90%(重量%)のN−ビニルピロリドン(「NVP」)および約10%(重量%)の4−t−ブチル−2−ヒドロオキシシクロヘキシルメタクリレートを含み、約80%(重量%)の水を吸収できるヒドロゲルコポリマーである。水和された場合のその屈折率は水の屈折率に非常に近いものである。HEMA Bは、同じく約37%(重量%)の水を吸収できるヒドロゲルである約0.9%(重量%)のエチレングリコールジメタクリレート(「EGDMA」)で架橋されたポリ(2−ヒドロキシエチルメタクリレート)である。PV2526−164、RD1817およびHEMA Bの屈折率は、水和された状態にあるとき、それぞれ1.422、1.363、および1.438である。ヒドロゲル試料の各々を、溶液(ボシュロム社の「レニュ(Renu)」溶液)中で顕微鏡スライドとガラスカバースリップの間に維持して、マイクロマシニングおよびその後の光学測定中にその含水量を維持するようにした。溶液中のこれらのヒドロゲル試料の厚みは、約700μmである。走査プラットフォーム上に水平に水和済み試料を取りつけ、高開口数の対物レンズを通して垂直方向下向きにフェムト秒レーザービームを導き、図8に示されている通り、バルク材料の内部で試料の上部表面から約100μmの深さのところで集束させた。レーザービームに対し直角なX−Y平面内で0.4μm/秒の走査速度で、周期的格子構造を作り上げた。これらの3つの材料の内側に作り出した格子を観察するために、オリンパス(Olympus)BX51型顕微鏡を使用した。
Claims (28)
- 光学高分子材料の屈折率を修正する方法であって、0.05nJ〜1000nJのパルスエネルギーを有する集束された可視または近赤外レーザーを前記光学高分子材料の選択領域に照射するステップを含み、前記被照射領域がほとんどまたは全く散乱損失を示さないことを特徴とする方法。
- 前記レーザーの前記パルスエネルギーが0.2nJ〜100nJであることを特徴とする請求項1に記載の方法。
- 前記レーザーの前記パルスエネルギーが0.5nJ〜10nJであることを特徴とする請求項1に記載の方法。
- 前記可視または近赤外レーザーが4fs〜100fsのパルス幅を有するパルスを生成することを特徴とする請求項2に記載の方法。
- 前記レーザーが、10mW〜1000mWの平均出力をもつ励起Ti:サファイアレーザーであることを特徴とする請求項1に記載の方法。
- 焦点対物レンズにより導入される正の分散を補償するための、少なくとも2つのプリズムおよび少なくとも1つのミラー、少なくとも2つの回折格子、チャープミラーおよび分散補償ミラーからなる群から選択される補償スキームによって集束レーザーが提供されることを特徴とする請求項1に記載の方法。
- 前記レーザーの照射を受ける前記光学材料の前記領域が、正の屈折率変化を示すことを特徴とする請求項1に記載の方法。
- 前記レーザーが400nm〜1200nmの波長を有することを特徴とする請求項1に記載の方法。
- 前記レーザーが約1013W/cm2より大きいピーク強度を有することを特徴とする請求項1に記載の方法。
- 前記光学高分子材料が光学材料であることを特徴とする請求項1に記載の方法。
- 前記光学材料の前記被照射領域が、離散的なシリンダのアレイ、一連のラインまたはシリンダとラインの組合せから選択されることを特徴とする請求項1に記載の方法。
- 前記光学材料の前記被照射領域が2次元平面内部に画成されることを特徴とする請求項1に記載の方法。
- 前記光学材料の前記被照射領域が3次元構造により画成されることを特徴とする請求項11に記載の方法。
- 前記光学材料の前記被照射領域が、0.2μm〜2μmの幅と0.4μm〜6μmの高さを有する一連のラインにより画成されることを特徴とする請求項1に記載の方法。
- 前記光学材料が、患者の水晶体のうの中に位置づけされた眼内レンズであることを特徴とする請求項1に記載の方法。
- 前記光学高分子材料がヒドロゲルであることを特徴とする請求項1に記載の方法。
- 0.05nJ〜1000nJのパルスエネルギーを有する集束された可視または近赤外レーザーでの照射を受けた選択領域を伴う光学高分子材料を含む光学デバイスであって、前記被照射領域が正の屈折率変化により特徴づけされ、ほとんどまたは全く散乱損失を示さないことを特徴とする光学デバイス。
- 前記光学高分子材料が完全に重合された光学材料であることを特徴とする請求項17に記載の光学デバイス。
- 前記光学デバイスの前記被照射領域が、離散的なシリンダのアレイ、一連のラインまたはシリンダと一連のラインの組合せから選択されることを特徴とする請求項17に記載の光学デバイス。
- 前記光学材料の前記被照射領域が2次元平面により画成されることを特徴とする請求項17に記載の光学デバイス。
- 前記光学材料の前記被照射領域が3次元構造により画成されることを特徴とする請求項17に記載の光学デバイス。
- 眼内レンズ、角膜インレー、角膜輪または人工角膜から選択されることを特徴とする請求項17に記載の光学デバイス。
- ヒトの眼の中への眼内レンズの外科的挿入の後この眼内レンズの屈折率を修正する方法であって、
− 外科手術の結果として前記眼内レンズによりひき起こされる収差を同定し測定するステップと;
− 前記収差を矯正するために前記レンズ内に書込むべき構造の位置および形状を決定するステップと;および
− 0.05nJ〜1000nJのパルスエネルギーを有する集束された可視または近赤外レーザーを前記レンズの選択領域に照射するステップであって、前記被照射領域が正の屈折率変化により特徴づけられ散乱損失をほとんどまたは全く示さないステップと、
を含むことを特徴とする方法。 - 前記被照射領域により提供される視力矯正を確認するステップをさらに含むことを特徴とする請求項23に記載の方法。
- 前記レーザーの前記パルスエネルギーが0.2nJ〜100nJであることを特徴とする請求項23に記載の方法。
- 前記可視または近赤外レーザーが、4fs〜100fsのパルス幅を有するパルスを生成することを特徴とする請求項25に記載の方法。
- 前記焦点対物レンズにより導入される正の分散を補償するための、少なくとも2つのプリズムおよび少なくとも1つのミラー、少なくとも2つの回折格子、チャープミラーおよび分散補償ミラーからなる群から選択される補償スキームによって前記集束レーザーが提供されることを特徴とする請求項23に記載の方法。
- 高分子光学材料の屈折率を修正するための光学配置と組合せたレーザーであって、前記光学配置が、焦点対物レンズおよび焦点対物レンズにより導入される正の分散を補償するための、少なくとも2つのプリズムおよび少なくとも1つのミラー、少なくとも2つの回折格子、チャープミラーおよび分散補償ミラーからなる群から選択される補償スキームを含むことを特徴とするレーザー。
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US20180206979A1 (en) | 2018-07-26 |
WO2008002796A8 (en) | 2008-04-03 |
JP5385136B2 (ja) | 2014-01-08 |
CA2655229A1 (en) | 2008-01-03 |
AU2007265218B2 (en) | 2012-09-20 |
US10543076B2 (en) | 2020-01-28 |
AU2007265218A1 (en) | 2008-01-03 |
WO2008002796A2 (en) | 2008-01-03 |
KR101372742B1 (ko) | 2014-03-10 |
CN101489509B (zh) | 2013-03-13 |
US10806567B2 (en) | 2020-10-20 |
EP2032102B1 (en) | 2010-07-28 |
CN101489509A (zh) | 2009-07-22 |
CA2655229C (en) | 2012-10-09 |
WO2008002796A3 (en) | 2008-07-24 |
DE602007008095D1 (de) | 2010-09-09 |
KR20090024197A (ko) | 2009-03-06 |
ATE475389T1 (de) | 2010-08-15 |
US20080001320A1 (en) | 2008-01-03 |
US20130178934A1 (en) | 2013-07-11 |
EP2032102A2 (en) | 2009-03-11 |
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