JP4930455B2 - 生体認証装置及び生体認証方法 - Google Patents
生体認証装置及び生体認証方法 Download PDFInfo
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- JP4930455B2 JP4930455B2 JP2008132163A JP2008132163A JP4930455B2 JP 4930455 B2 JP4930455 B2 JP 4930455B2 JP 2008132163 A JP2008132163 A JP 2008132163A JP 2008132163 A JP2008132163 A JP 2008132163A JP 4930455 B2 JP4930455 B2 JP 4930455B2
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Landscapes
- Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
- Image Input (AREA)
Description
Claims (4)
- 生体の表皮面の一部と対向する撮像手段と、
上記撮像手段と対向する表皮面部位に光が照らされることを避ける程度に上記撮像手段から離間されて設けられ、上記表皮面部位における皮下組織にある認証対象の静脈の後方に達する近赤外帯域の照射光を照射する照射手段と
を有し、
上記撮像手段は、
上記表皮面部位における皮下組織にある認証対象の静脈の後方において上記照射光が散乱することにより得られる散乱光のうち上記撮像手段に戻る戻り光を取り込む開口と、
上記開口に配される表皮面部位から出射する戻り光の経路となる空間を仕切って、該戻り光に対する上記表皮面部位から認証対象の静脈までの表皮組織において反射する反射光の到達を遮る遮光部と、
上記表皮面部位における皮下組織にある認証対象の静脈の後方で上記照射光が散乱することにより得られる散乱光のうち、上記遮光部によって仕切られる空間を通る戻り光を用いて静脈像を撮像する撮像素子と
を有する生体認証装置。 - 上記開口は、上記生体の表皮面の一部が当接される
請求項1に記載の生体認証装置。 - 上記照射手段は、光の振動方向を一方向に制限するための第1の偏光板を含み、
上記撮像手段は、上記第1の偏光板に対して直交する振動方向となる第2の偏光板を含む
請求項1又は請求項2に記載の生体認証装置。 - 撮像手段と対向する生体の表皮面部位に光が照らされることを避ける程度に、上記撮像手段から離間されて設けられる照射手段から、上記表皮面部位と浅い角度をなす状態で、該表皮面部位における皮下組織にある認証対象の静脈の後方に達する近赤外帯域の照射光を照射する照射ステップと、
上記表皮面部位における皮下組織にある認証対象の静脈の後方において上記照射光が散乱することにより得られる散乱光のうち、上記照射手段の照射方向と異なる方向にある開口に戻る戻り光の経路となる空間を仕切って、該戻り光に対する上記表皮面部位から認証対象の静脈までの表皮組織において反射する反射光の到達を遮る遮光部を通る戻り光を用いて、静脈像を撮像する撮像ステップと
を有する生体認証方法。
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JP2008210407A JP2008210407A (ja) | 2008-09-11 |
JP4930455B2 true JP4930455B2 (ja) | 2012-05-16 |
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Families Citing this family (1)
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WO2020241364A1 (ja) * | 2019-05-28 | 2020-12-03 | ソニー株式会社 | 撮像装置、撮像方法及びプログラム |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0721373A (ja) * | 1993-06-17 | 1995-01-24 | Asahi Optical Co Ltd | 個人識別装置 |
US6628809B1 (en) * | 1999-10-08 | 2003-09-30 | Lumidigm, Inc. | Apparatus and method for identification of individuals by near-infrared spectrum |
JP3869545B2 (ja) * | 1998-01-19 | 2007-01-17 | 株式会社日立製作所 | 指の特徴パターン特徴検出装置及び個人識別装置 |
JP4371461B2 (ja) * | 1999-03-19 | 2009-11-25 | シスメックス株式会社 | 無侵襲生体計測装置 |
JP2001000422A (ja) * | 1999-06-24 | 2001-01-09 | Fuji Xerox Co Ltd | 生体識別装置 |
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Demos | Methods for enhancing visualization of subsurface tissue structures in real time |
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