JP2012507084A - 蛍光体に基づく真正物証明システム - Google Patents
蛍光体に基づく真正物証明システム Download PDFInfo
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- JP2012507084A JP2012507084A JP2011533379A JP2011533379A JP2012507084A JP 2012507084 A JP2012507084 A JP 2012507084A JP 2011533379 A JP2011533379 A JP 2011533379A JP 2011533379 A JP2011533379 A JP 2011533379A JP 2012507084 A JP2012507084 A JP 2012507084A
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Images
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Abstract
Description
本願は、Yi−Qun Li外によって、2009年10月22日付けで出願された、発明の名称が「Phosphor Based Authentication System」である米国正規特許出願第12/604268号と、Yi−Qun Li外によって、2008年10月23日付けで出願された、発明の名称が「Phosphor Based Authentication System」である米国仮特許出願第61/107928号とに基づく優先権を主張する。両出願は、参照によって本明細書中にそっくりそのまま含まれる。
本発明は、蛍光体(フォトルミネセンス)材料に基づく真正物証明システムに係わり、より詳しくは、フォトルミネセンス・セキュリティマーキングの真正物証明をする方法、フォトルミネセンス・セキュリティマーキングの真正物証明をする装置、および、フォトルミネセンス・セキュリティマーキングに関する。
真正物証明とは、何かあるものを真正物証明性があるとして、すなわち、あるものに関して行われた主張が真実であるとして、確証または確認する行為である。物品または文書の真正物証明は、通常は、1つ以上の真正物証明ファクタを用いて物品または文書の由来を確認することを必要とする。物品または文書は、多くの場合、物品/文書を1つ以上のセキュリティマーキングまたはセキュリティ機器を含むことになる。セキュリティマーキング/セキュリティ機器の実施例は、文書中の透かしと、個人小切手上の磁気印刷と、銀行券上のマイクロ印刷と、オイルおよびガス中のアンチボディと、酒類およびアルコール飲料中の分子認識試薬と、パッケージ上の熱転写インクおよび色ずれ色素と、クレジットカード上のホログラムと、フォトルミネセンス・セキュリティマーキングと、バーコードと、電子タグ機器と、薬剤カプセル上の不可視マーカなどを含む。
・放出ピークの実際の波長(λa、λb、λc)および/または強度(Ia、Ib、Ic)
・放出トラフの実際の波長(λd、λe、λf)および/または強度(Id、Ie、If)
・放出スペクトル中の変曲点に対応する波長(λg)および/または強度(Ig)
・放出ピークの立ち上がりのレート(δI/δλ)
・放出ピークの立ち下がりのレート(δI/δλ)
・放出ピーク強度の比率(例えば、Ia:Ib:Ic、Ia:Ib、Ib:Ic、Ia:Ic)
・放出ピーク波長の比率(例えば、λa:λb:λc、λa:λb、λb:λc、λa:λc)
・放出トラフ強度に対する放出ピーク強度の比率(例えば、Ia:Id、Ib:Id、Ib:Ie、Ic:Ie、Ic:If、Ia:Ie、Ia:If、Ib:If)
・放出トラフ波長に対する放出ピーク波長の比率(例えば、λa:λd、λb:λd、λb:λe、λc:λe、λc:λf、λa:λe、λa:λf、λb:λf)
・ピーク線幅(すなわち、半値全幅FWHM)
・ピーク線幅の比率、および、
・励起用光源のスイッチが切られたときの蛍光体フォトルミネセンスの減衰のレート(図6に示されず)
を含むがこれらに限定されない。
・励起用光源1のみ(λex1)
・励起用光源2のみ(λex2)
・励起用光源3のみ(λex3)
・励起用光源1および2(λex1+λex2)
・励起用光源1および3(λex1+λex3)
・励起用光源2および3(λex2+λex3)、および、
・3つすべての励起用光源(λex1+λex2+λex3)
である。
Claims (23)
- 真正物証明用セキュリティマーキングが、
波長範囲が380から780nmの範囲内にある選択された波長を有し、
そして励起されたときに既知の放出特性を有している励起用放出光によって励起可能である少なくとも2つの蛍光体材料のブレンドを含む、
フォトルミネセンス・セキュリティマーキングの真正物証明をする方法であって、
a)前記選択された波長を有する励起用放出光で前記マーキングを照射するステップと、
b)前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
c)前記少なくとも1つの測定されたパラメータを前記既知の放出特性の対応するパラメータと比較し、そして前記パラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明するステップと、
を含む方法。 - 前記マーキングは、
第1の波長範囲に入る波長を有する励起用放出光のみにより励起可能である少なくとも1つの蛍光体材料と、
前記第1の波長範囲と重なり合い、かつ、前記第1の波長範囲を包含する第2の異なる波長範囲に入る波長を有する励起用放出光によって励起可能である少なくとも1つの蛍光体材料と
を含み、
a)前記第1の波長範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
b)前記第1の波長範囲および前記第2の波長範囲の重なり合う領域の範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
c)前記第1の波長範囲と重なり合わない前記第2の波長範囲の一部分の範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
d)前記少なくとも1つの測定されたパラメータを前記既知の放出特性の対応するパラメータと比較し、そして前記パラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明するステップと、
を含む、請求項1に記載の方法。 - 前記少なくとも1つの選択されたパラメータは、
選択された波長領域の強度と、選択された波長領域の強度の比率と、
放出ピークの強度と、放出ピークの波長と、放出ピークの立ち上がりのレートと、放出ピークの立ち下がりのレートと、放出ピーク強度の比率と、放出ピーク波長の比率と、
放出トラフの強度と、放出トラフの波長と、放出トラフ強度の比率と、放出トラフ波長の比率と、
変曲点の波長と、変曲点の強度と、変曲点強度の比率と、変曲点波長の比率と、
放出ピークの個数と、放出トラフの個数と、変曲点の個数と、
放出ピークの形状と、
これらの組み合わせとよりなるグループから選択される、
請求項1に記載の方法。 - 真正物証明用セキュリティマーキングが少なくとも2つの蛍光体材料のブレンドを含み、
少なくとも1つの蛍光体材料のみが第1の波長範囲に入る波長を有する励起用放出光のみにより励起可能であり、
そして少なくとも1つの蛍光体材料が前記第1の波長範囲と重なり合い、かつ、
前記第1の波長範囲を包含する第2の異なる波長範囲に入る波長を有する励起用放出光によって励起可能である、
フォトルミネセンス・セキュリティマーキングの真正物証明をする方法であって、
a)前記第1の波長範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
b)前記第1の波長範囲および前記第2の波長範囲の重なり合う領域の範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
c)前記第1の波長範囲と重なり合わない前記第2の波長範囲の一部分の範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するステップと、
d)ステップa)、b)およびc)において測定された前記選択されたパラメータを既知の放出特性の対応するパラメータと比較し、そして前記パラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明するステップと、
を含む方法。 - 前記少なくとも1つの選択されたパラメータは、
選択された波長領域の強度と、選択された波長領域の強度の比率と、
放出ピークの強度と、放出ピークの波長と、放出ピークの立ち上がりのレートと、放出ピークの立ち下がりのレートと、放出ピーク強度の比率と、放出ピーク波長の比率と、
放出トラフの強度と、放出トラフの波長と、放出トラフ強度の比率と、放出トラフ波長の比率と、
変曲点の波長と、変曲点の強度と、変曲点強度の比率と、変曲点波長の比率と、
放出ピークの個数と、放出トラフの個数と、変曲点の個数と、
放出ピークの形状と、
これらの組み合わせとよりなるグループから選択される、
請求項4に記載の方法。 - 真正物証明用セキュリティマーキングが、波長範囲380から780nmの範囲内にある選択された波長を有し、
そして励起されたとき、既知の放出特性を有している励起用放出光によって励起可能である少なくとも2つの蛍光体材料のブレンドを含む、
フォトルミネセンス・セキュリティマーキングの真正物証明をする装置であって、
前記選択された波長を有する励起用放出光を放出し、そして前記選択された波長を有する励起用放出光でマーキングを照射するように動作できる少なくとも1つの励起用光源と、
前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するように動作できる検出器と、
前記少なくとも1つの測定されたパラメータを既知の放出特性の対応するパラメータと比較し、そして前記少なくとも1つの測定されたパラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明する処理手段と、
を含む装置。 - 前記フォトルミネセンス・セキュリティマーキングから放出された前記光を選択された波長領域に分割する波長分離手段をさらに含み、
そして前記検出器は、選択された波長領域毎に強度を測定するように動作できる、
請求項6に記載の装置。 - 前記波長分離手段は、
光フィルタ、ゲルフィルタ、ダイクロイックフィルタ、グレーティング、光ファイバ・グレーティング、および、プリズムよりなるグループから選択される、
請求項7に記載の装置。 - 前記少なくとも1つの選択されたパラメータは、
選択された波長領域の強度と、選択された波長領域の強度の比率と、
放出ピークの強度と、放出ピークの波長と、放出ピークの立ち上がりのレートと、放出ピークの立ち下がりのレートと、放出ピーク強度の比率と、放出ピーク波長の比率と、
放出トラフの強度と、放出トラフの波長と、放出トラフ強度の比率と、放出トラフ波長の比率と、
変曲点の波長と、変曲点の強度と、変曲点強度の比率と、変曲点波長の比率と、
放出ピークの個数と、放出トラフの個数と、変曲点の個数と、
放出ピークの形状と、
これらの組み合わせとよりなるグループから選択される、
請求項6に記載の装置。 - 真正物証明性マーキングが、
第1の波長範囲に入る波長を有する励起用放出光のみにより励起可能である少なくとも1つの蛍光体材料と、
前記第1の波長範囲と重なり合い、かつ、前記第1の波長範囲を包含する第2の異なる波長範囲に入る波長を有する励起用放出光によって励起可能である少なくとも1つの蛍光体材料と
を含む、フォトルミネセンス・セキュリティマーキングの真正物証明をする装置であって、
i)前記第1の波長範囲に入る波長を有する励起用放出光を放出し、そして前記第1の波長範囲に入る波長を有する励起用放出光で前記マーキングを照射するように動作できる第1の独立に動作する励起用光源と、
ii)前記第2の波長範囲に入る波長を有する励起用放出光を放出し、そして前記第2の波長範囲に入る波長を有する励起用放出光で前記マーキングを照射するように動作できる第2の独立に動作する励起用光源と、
iii)前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するように動作できる検出器と、
iv)前記少なくとも1つの選択されたパラメータを既知の放出特性を有する対応するパラメータと比較し、そして前記パラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明する処理手段と、
を含み、
前記装置は、
a)前記第1の波長範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の少なくとも1つの選択されたパラメータを測定するため動作し、
b)前記第1の放出範囲および前記第2の放出範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の前記少なくとも1つの選択されたパラメータを測定するため動作し、
c)前記第1の波長範囲と重なり合わない前記第2の波長範囲の一部分の範囲に入る波長を有する励起用放出光で前記マーキングを照射し、そして前記マーキングから放出された光の前記少なくとも1つの選択されたパラメータを測定するため動作し、
d)前記少なくとも1つの選択されたパラメータの値を既知の放出特性の対応するパラメータと比較し、そして前記パラメータが所定の範囲内に入る場合、前記マーキングの真正物性を証明するように動作できる
装置。 - 前記少なくとも1つの選択されたパラメータは、
選択された波長領域の強度と、選択された波長領域の強度の比率と、
放出ピークの強度と、放出ピークの波長と、放出ピークの立ち上がりのレートと、放出ピークの立ち下がりのレートと、放出ピーク強度の比率と、放出ピーク波長の比率と、
放出トラフの強度と、放出トラフの波長と、放出トラフ強度の比率と、放出トラフ波長の比率と、
変曲点の波長と、変曲点の強度と、変曲点強度の比率と、変曲点波長の比率と、
放出ピークの個数と、放出トラフの個数と、変曲点の個数と、
放出ピークの形状と、
これらの組み合わせとよりなるグループから選択される、
請求項10に記載の装置。 - 前記少なくとも1つの励起用光源は、波長範囲400から450nmを有する励起用放出光を発生するように動作できる、
請求項6に記載の装置。 - 前記少なくとも1つの励起用光源は、発光ダイオードである、
請求項6に記載の装置。 - 各蛍光体材料が
波長範囲380から780nmに入る選択された波長を有する励起用放出光によって励起可能である少なくとも2つの蛍光体材料のブレンドを含む、
フォトルミネセンス・セキュリティマーキング。 - 前記蛍光体材料は、同じホスト格子構造を有している、
請求項14に記載のマーキング。 - 各蛍光体材料は、同じ波長範囲を有する励起用放出光によって励起可能である、
請求項14に記載のマーキング。 - 前記少なくとも1つの蛍光体材料は、第1の波長範囲を有する励起用放出光のみにより励起可能であり、
そして少なくとも1つの蛍光体材料は、前記第1の波長範囲と重なり合い、かつ、前記第1の波長範囲を包含する第2の異なる波長範囲を有する励起用放出光によって励起可能である、
請求項14に記載のマーキング。 - 前記マーキングは、少なくとも3つの蛍光体材料のブレンドを含み、
少なくとも1つの蛍光体材料が、第1の波長範囲を有する励起用放出光によって励起可能であり、
少なくとも1つの蛍光体材料が、前記第1の波長範囲と重なり合い、かつ、前記第1の波長範囲を包含する第2の波長範囲を有する励起用放出光によって励起可能であり、
そして少なくとも1つの蛍光体材料が、前記第1の波長範囲および前記第2の波長範囲と重なり合い、かつ、前記第1の波長範囲および前記第2の波長範囲を包含する第3の波長範囲を有する励起用放出光によって励起可能である、
請求項14に記載のマーキング。 - 少なくとも2つの蛍光体材料の前記ブレンドは、
バインダ材料と共に含まれるグループ、
インクと共に含まれるグループ、
ポリマ材料の中に含まれるグループ、
ポリマ材料のシートの中に含まれるグループ、
ポリマ材料のファイバの中に含まれるグループ、
少なくとも1つのシートが前記励起用放出光と前記蛍光体材料から放出された光とを伝送する材料のシートの間に積層されるグループ、
金属箔の表面に展着されるグループ、
金属箔の表面に展着され、および、バーコードの一部分として含まれるグループ
から選択される、
請求項14に記載のマーキング。 - 前記蛍光体材料は、波長範囲400から450nmを有する励起用放出光で励起可能である、
請求項14に記載のマーキング。 - 各蛍光体材料は、5ミクロン以下、2ミクロン以下、および、1ミクロン以下よりなるグループから選択された平均粒子サイズを有している、
請求項14に記載のマーキング。 - 前記蛍光体材料は、アルミネート、シリケート、ニトリド、サルフェート、オキシナイトライド、オキシサルフェート、および、ガーネット材料よりなるグループから選択される、
請求項14に記載のマーキング。 - 少なくとも1つの蛍光体材料が第1の波長範囲を有する励起用放出光のみにより励起可能であり、
そして少なくとも1つの蛍光体材料が、前記第1の波長範囲と重なり合い、かつ、前記第1の波長範囲を包含する第2の波長範囲を有する励起用放出光によって励起可能である、 ところの少なくとも2つの蛍光体材料のブレンドを含む
フォトルミネセンス・セキュリティマーキング。
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KR102374411B1 (ko) | 2020-03-10 | 2022-03-15 | 공주대학교 산학협력단 | 업컨버전 형광체 입자 제조방법, 이에 의하여 제조된 업컨버전 형광체 입자, 및 이를 포함하는 형광 잉크 |
Also Published As
Publication number | Publication date |
---|---|
EP2350525A1 (en) | 2011-08-03 |
WO2010048535A1 (en) | 2010-04-29 |
KR20110086061A (ko) | 2011-07-27 |
EP2350525A4 (en) | 2012-08-29 |
CN102197262B (zh) | 2014-08-20 |
US8822954B2 (en) | 2014-09-02 |
US20100102250A1 (en) | 2010-04-29 |
CN102197262A (zh) | 2011-09-21 |
JP5529878B2 (ja) | 2014-06-25 |
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