JP2010517043A - 工業プロセス制御用の化学分析装置 - Google Patents
工業プロセス制御用の化学分析装置 Download PDFInfo
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Abstract
Description
Claims (31)
- レーザ源を含むレーザモジュールと、
少なくとも1つの固定波長スペクトルフィルタおよび少なくとも1つの光検出器を含む光学的検出器モジュールと、
自由空間光学系モジュールと、
制御マイクロプロセッサと、
を備える光学的化学分析装置であって、
前記光学系モジュールは、前記分析装置の外部にかつ前記分析装置から離れて配置された試料に光学窓またはレンズを通してレーザ源の放射を伝達し、前記光学系モジュールは、前記光学窓またはレンズを通して前記試料から散乱されたラマン放射を収集し、この収集されたラマン放射を前記光学的検出器モジュールに伝達し、前記スペクトルフィルタはそれぞれ、前記収集されたラマン放射からスペクトル帯を抽出することを特徴とする光学的化学分析装置。 - 前記スペクトルフィルタは、帯域通過フィルタまたはノッチフィルタであることを特徴とする請求項1記載の光学的化学分析装置。
- 前記光学的検出器モジュールは、少なくとも1つの波長可変フィルタをさらに含むことを特徴とする請求項1記載の光学的化学分析装置。
- 前記スペクトルフィルタは、折れ曲がりかつ分岐した光路に配置されることを特徴とする請求項2記載の光学的化学分析装置。
- 前記ラマン放射は、前記スペクトルフィルタに垂直でない角度で入射することを特徴とする請求項4記載の光学的化学分析装置。
- 前記スペクトル帯はそれぞれ、異なる光検出器によって検出されることを特徴とする請求項1記載の光学的化学分析装置。
- 前記光検出器はそれぞれ、シリコン光検出器、アバランシェ光検出器、または光電子倍増管であることを特徴とする請求項6記載の光学的化学分析装置。
- 前記光検出器は、加熱または冷却装置によって能動的に温度が安定化されることを特徴とする請求項6記載の光学的化学分析装置。
- 前記スペクトルフィルタは、回転ホイールまたは直線スライドなどの可動ステージ上に配置されることを特徴とする請求項1記載の光学的化学分析装置。
- 前記スペクトルフィルタは、薄膜フィルタであることを特徴とする請求項2記載の光学的化学分析装置。
- 前記スペクトルフィルタは、1つまたは複数の着脱・交換自在のカートリッジに組み込まれており、基準面に対して押し付けられて保持されることを特徴とする請求項1記載の光学的化学分析装置。
- 前記光学的検出器モジュールは、スペクトル抽出用のポッケルス媒質またはカー媒質をさらに含むことを特徴とする請求項1記載の光学的化学分析装置。
- 前記光学的検出器モジュールは、1つまたは複数の回折素子または分散素子をさらに含むことを特徴とする請求項1記載の光学的化学分析装置。
- 前記回折素子は、反射または屈折回折格子から成ることを特徴とする請求項13記載の光学的化学分析装置。
- 前記自由空間光学系モジュールは、レーザ放射をほぼ反射するとともにラマン放射をほぼ透過させる選択的反射器を備えることを特徴とする請求項1記載の光学的化学分析装置。
- 前記選択的反射器は、光学薄膜、または二色性フィルタ、あるいは、大きな透明領域であってその一部に小さな反射領域が配置されている大きな透明領域を備えることを特徴とする請求項15記載の光学的化学分析装置。
- 前記自由空間光学系モジュールは、レーザ放射をほぼ透過させるとともにラマン放射をほぼ反射する選択的反射器を備えることを特徴とする請求項1記載の光学的化学分析装置。
- 前記選択的反射器は、小さな開口部を有する大きな反射領域を備えることを特徴とする請求項17記載の光学的化学分析装置。
- 前記分析装置の外部に伝達されたレーザ放射の主軸と、前記分析装置に入射するラマン放射の主軸とは、これらの主軸両方が前記光学窓またはレンズと横切る位置で同一直線上にあることを特徴とする請求項1記載の光学的化学分析装置。
- 前記試料は、レーザ放射およびラマン放射両方に対して透明な窓の後ろに配置されることを特徴とする請求項1記載の光学的化学分析装置。
- 前記試料は、1つまたは複数の固体、液体、または気体物質から成る均一または不均一化学物質混合物を含むことを特徴とする請求項20記載の光学的化学分析装置。
- 前記試料は、プロセスパイプラインまたはプロセス容器内に位置することを特徴とする請求項21記載の光学的化学分析装置。
- 前記分析装置は、少なくとも1つの前記固体、液体、または気体物質の濃度の定量を行うことを特徴とする請求項21記載の光学的化学分析装置。
- 前記レーザ源からの前記放射の振幅は、10MHzより低い周波数で時間変調されることを特徴とする請求項1記載の光学的化学分析装置。
- 前記レーザ源は、スペクトル安定化されていることを特徴とする請求項24記載の光学的化学分析装置。
- 前記レーザ源は、主に波長785nmの放射を放出することを特徴とする請求項25記載の光学的化学分析装置。
- 前記レーザモジュールは、レーザ冷却器と、ビーム整形光学系と、前記レーザ源の前記放射の波長を制御する波長選択素子とを備えることを特徴とする請求項25記載の光学的化学分析装置。
- 前記レーザモジュールは、前記レーザ源の前記放射のスペクトル範囲を制限する少なくとも1つの光学フィルタをさらに備えることを特徴とする請求項27記載の光学的化学分析装置。
- 前記光学系モジュールは、前記収集されたラマン放射の空間特性およびスペクトル特性を変更し、また、前記光学系モジュールは、少なくとも1つのレンズと、前記レーザ源の前記放射の波長における不要な放射を低減または除去する少なくとも1つの空間またはスペクトルフィルタとを備えることを特徴とする請求項1記載の光学的化学分析装置。
- 前記光学的検出モジュール内の少なくとも1つのアナログ信号経路が、電子的および熱的ノイズに対して高安定かつ低感受性の複数の段に分割されており、前記制御マイクロプロセッサは、測定データや分析装置ステータス情報などのデジタルデータを1つまたは複数の外部装置に供給することを特徴とする請求項1記載の光学的化学分析装置。
- 自由空間光学系を用いて観測窓を通して連続流またはバッチプロセス内へレーザ放射を放出し、
光学系モジュールを用いて前記観測窓を通して散乱されたラマン放射を収集し、
前記光学系モジュールを用いて前記ラマン放射を検出モジュールに伝達し、
固定波長スペクトルフィルタを備える側光検出器モジュールを用いて前記ラマン放射の個々のスペクトル帯を検出する、
ことを含むことを特徴とする、連続流またはバッチプロセス内の化学物質濃度を測定する方法。
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Application Number | Priority Date | Filing Date | Title |
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US11/668,083 US8077309B2 (en) | 2007-01-29 | 2007-01-29 | Chemical analyzer for industrial process control |
PCT/US2008/051259 WO2008097700A2 (en) | 2007-01-29 | 2008-01-17 | Chemical analyzer for industrial process control |
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JP2010517043A true JP2010517043A (ja) | 2010-05-20 |
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JP2009547360A Pending JP2010517043A (ja) | 2007-01-29 | 2008-01-17 | 工業プロセス制御用の化学分析装置 |
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US (1) | US8077309B2 (ja) |
EP (1) | EP2111542A2 (ja) |
JP (1) | JP2010517043A (ja) |
CN (1) | CN101652653A (ja) |
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WO (1) | WO2008097700A2 (ja) |
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JP2013507634A (ja) * | 2009-10-15 | 2013-03-04 | テクノロジアン・トゥトキムスケスクス・ブイティティー | ラマン放射線の測定 |
JP2013170873A (ja) * | 2012-02-20 | 2013-09-02 | Tokyo Gas Co Ltd | ラマン分光分析によって液体の組成を測定するシステム |
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WO2008097700A3 (en) | 2008-11-20 |
WO2008097700A2 (en) | 2008-08-14 |
CN101652653A (zh) | 2010-02-17 |
EP2111542A2 (en) | 2009-10-28 |
US8077309B2 (en) | 2011-12-13 |
US20080180661A1 (en) | 2008-07-31 |
BRPI0806880A2 (pt) | 2014-04-29 |
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