JP2004049705A - Personal authenticator - Google Patents

Personal authenticator Download PDF

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Publication number
JP2004049705A
JP2004049705A JP2002213686A JP2002213686A JP2004049705A JP 2004049705 A JP2004049705 A JP 2004049705A JP 2002213686 A JP2002213686 A JP 2002213686A JP 2002213686 A JP2002213686 A JP 2002213686A JP 2004049705 A JP2004049705 A JP 2004049705A
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Prior art keywords
finger
light
unit
personal authentication
image data
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JP2002213686A
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JP3925338B2 (en
Inventor
Shunzo Matsuura
松浦　俊三
Hisao Nakayama
中山　尚男
Haruo Nishikata
西方　春雄
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Hitachi Engineering Co Ltd
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Hitachi Engineering Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus and a method for personal authentication having a high authentication accuracy which can be easily set to any of left and right hand fingers and can acquire a finger vein image with high reproducibility in a personal authentication in the individual or a group of plurality of persons by utilizing the finger vein image, and to provide its light source. <P>SOLUTION: The personal authenticator includes a case having an inserting section which can insert one finger fingerprint toward a lower surface, a light source section for generating transmission light from an upper surface to the finger, an interference filter having a light transmittivity for an arbitrary wavelength, an imaging unit for imaging the transmission light transmitted through the filter, and an image processing unit of the finger vein image data to be outputted from the imaging unit. <P>COPYRIGHT: (C)2004,JPO

Description

【０００１】
【発明の属する技術分野】
本発明は、指静脈画像データを利用して個人又は複数人のグループを認証する新規な個人認証装置と個人認証方法及びその光源に関する。
【０００２】
【従来の技術】
従来、指静脈画像データを用いて個人認証を行なうにあたって、同一人物にあっては、再現性よく指画像を取得する必要があるため、特開２００１−１８４５０７号公報では、複数の指でドアの取ってなどを握る際には手の形がほぼ一意に決まることを利用して、データ取得部に平面的な指の回転を抑える為にト゛アの取って形状等の曲率を持ったデータ取得部を使い、空間的な指の移動をおさえるために複数指でデータ取得部を握って撮像し、指の移動度を並進に限定することを可能にしている。
【０００３】
【発明が解決しようとする課題】
しかし、特開２００１−１８４５０７号公報においては、指の前後方向の回転は抑えることが出来ないため再現性よく指静脈画像データを取得できないため個人認証精度が低くなると同時に、取っ手形状のデータ取得部を手全体で握る構成のため、装置全体が大きくなり認証装置設置用スペースが広く必要という欠点があった。
本発明の目的は、指の静脈画像を利用して個人又は複数人のグループにおける個人認証において、予め記憶されたデータに対して指の照合が左右どちらの手の指に対しても容易に設定でき、高い再現性を持って指静脈画像を取得できると共に、高い認証精度を有する個人認証装置と個人認証方法及びその光源を提供することにある。
【０００４】
【課題を解決するための手段】
本発明は、１本の指の指紋を下面に向けて挿入できる挿入部を設けたケースと、前記指に対してその上面から透過光を発生する光源部と、任意波長に対して光透過性を有する干渉フィルタ部と、該干渉フィルタ部を透過した透過光を撮像する撮像部と、該撮像部から出力される前記指の静脈画像データを予め記憶部された画像データと照合できる照合用データを作成する画像処理部とを有することを特徴とする個人認証装置にある。
【０００５】
前記指挿入部は、前記指の先端位置を規制する指押し当て部と、前記挿入後の前記指挿入部の入口における前記指の上下位置の少なくとも一方を設定する指位置規制部を有すること、干渉フィルタ部は光源部から発せられる前記透過光と他の光とを分離するものであること、又、前記指押し当て部は手のひらから最初の関節までの間に止まる位置に挿入できるように設けられることが好ましい。
【０００６】
即ち、個人認証装置の指挿入部に指を挿入する際の指長軸方向ずれ、指短軸方向のずれ、指長軸を軸とした回転、指の静脈画像撮像部との位置ずれを防止し、指の画像撮像面を同一化し毎回の指挿入動作時の指挿入状態を同一にし、指静脈データ読取りの再現性を高める必要がある。そこで、指長軸方向のずれを防止する為に指挿入口の最奥に指先端が突き当たる壁を設け、指短軸方向のずれ及び指長軸を軸とした回転を防止する為にケースの指挿入部の入口部に挿入指の中心を示す三角マークを設け、指の画像撮像部との位置ずれを防止する為に指挿入部の入口上部に指付け根押し当て部と指先端が突き当たる壁の手前に突起部を設け、指挿入部に指を挿入する際、指挿入口の最奥にある指突き当て部に指先端をつけ、指長軸方向の中心をケースの指挿入部の入口部の三角マークに合せ、指付け根部分を指付け根押し当て部に接触させ、人がボタンを押す際、指の形がほぼ一義的に決まることを利用して指腹部で突起部を押す行為を行うことで達成される。
【０００７】
指挿入部の最奥に指先端が突き当て部を設け、指を挿入した際の指腹部の位置に突起部を設け、指挿入部の入口上部に上部指付け根押し当て部を設ける。これにより、指短軸の中心をケースの指挿入部の入口部のマークに合せ指を挿入し、指挿部の最奥に指先端を指突き当て部につけ、指付け根部を指挿入部の入口上部の上部指付け根押し当て部につけ、指腹部を突起部に当てる指挿入動作により、指を挿入した際の指長軸を軸とした平面的回転及び空間的回転及び、前後左右の位置ずれを抑制し、さらに指と撮像部との位置規定を行なうことが出来、再現性良く指静脈画像データを取得することができる。
【０００８】
更に、本発明は、１本の指の指紋を下面にし、前記指に対してその上面から透過光を照射する工程と、前記指を透過した透過光を撮像する工程と、該撮像された前記指の静脈画像データを予め記憶部された画像データと照合する認証工程とを有すること、又、一本の指に対して透過光を照射し、前記指を透過した透過光によって撮像された前記指の第１関節と第２関節との間の静脈画像データを予め記憶部された画像データと照合すること特徴とする個人認証方法にある。後者の方法においても、指の指紋を下面にし、前記指に対してその上面から透過光を照射するのが好ましく、このようにすることによって左右どちらの指でも容易に挿入でき、個人認証が容易にできるものである。
【０００９】
前記透過光の照射位置に対する前記指の挿入位置の設定を前記指の先端と手のひらから最初の関節の間における上下の少なくとも一方とで行うこと、前記指の挿入後、該挿入された指によって前記透過光の照射の開始を指示すること、認証の指として特に指の先端から第１関節までの距離はどの指でもほぼ等しいことからどの指でも良く、人差指の挿入が容易であることから好ましい。
【００１０】
又、本発明は、絶縁基板上に一列に少なくとも５個の遠赤外線を発光する発光ダイオードを有し、該発光ダイオードが少なくとも指の第１関節と第２関節との間に対応して等間隔に配置されていることを特徴とする個人認証装置用光源にある。好ましくは、更に両側に同じ間隔で１〜３個設けることができる。
【００１１】
【発明の実施の形態】
（実施例１）
図１は、本発明の個人認証装置の正面図（ａ）及び側面図（ｂ）である。図２は、本発明の回路ブロック図である。図１に示すように、個人認証装置は、ケース９内に指の指紋を下面にして指挿入部２に挿入された１本の指に対しその上面から透過光３０を発する遠赤外線を発光する一列に等間隔に配置された９個の発光ダイオード（ＬＥＤ）１０を光源とした光源部２２、光源部２２から発せられる遠赤外線光の透過光３０と室内環境に存在する蛍光灯の光等の人工光や自然光を分離するための干渉フィルタ部２３、指を透過した光を撮像するＣＭＯＳカメラモジュールあるいはＣＣＤカメラモジュール等で構成される撮像部２４、光源２２から発せられる光が撮像部２４に入光される際、指の第１関節部の画像がさえぎられないような大きさで構成された画像処理のスタートを示す信号を作成するためのスイッチ部５、撮像部２４で撮像された画像のデータ処理を行なうデータ処理部３２で構成される。
【００１２】
光源部２２は絶縁基板上に９個の発光ダイオード（ＬＥＤ）１０が配置されて指７との間にガラスでカバーされており、少なくとも５個が指の第１関節と第２関節との間に対応して等間隔に配置し、その両側に同じ間隔で指の長い人にも対応できるようにしている。このように等間隔で配置することによって均一な光の照射ができ、精度の高い認証が得られる。
【００１３】
上部指付け根押し当て部３は、指７の挿入の入り口側に設けられ、指７の挿入位置を決めるのに指７の太さに対応させた凹部を有し、正確な位置決めができる。指７の下部は、干渉フィルタ２３を覆うカバーに指７が接して静脈画像の変形が生じないように直接接しないように若干の空間が形成される。又、上部指付け根押し当て部３は点線のように両側を長くさせることによりより正確な位置決めができる。更に、上部指付け根押し当て部３の対応する下部に前述の空間を形成するのに指挿入部２の空間のほぼ全長さに亙ってそれと同様の突起を設けることができる。その突起はその長さの中心部に指７の太さより小さい幅の溝又は凹部を設け、ゴミの排除を容易にすることができる。
【００１４】
データ処理部３２は、撮像部２４から出力される１本の指の静脈画像データを予め記憶部２８に保存されたデータと照合できるようにするために照合用データを作成する画像処理部２５、予め登録された照合データを保存する記憶部２８、画像処理部２５で作成された指静脈画像データと予め記憶部２８に保存されている指の静脈画像データを照合する照合部２９、個人認証装置２１内の制御を行う制御部２７、照合結果を入退出管理コントローラ等の他機器３１に送信する通信処理部２６で構成されている。
【００１５】
また、個人認証装置の指挿入部２には、指挿入時の指７の挿入長を規制し、指の画像撮像時の指の位置を規制し指静脈画像の再現性を高めることを目的として、指長軸方向のずれを防止する為に指挿入部の最奥に指先端を突き当てる指突き当て部４、指短軸方向のずれ及び指長軸を軸とした回転を防止する為にケースの指挿入部の入口部に挿入指の中心を示す三角マーク１、指７の画像撮像部との位置ずれを防止する為に指挿入部の入口上部に指付け根部分を押し当てる上部指付け根押し当て部３と指突き当て部４の手前に突起部５が設けられ、これらの各部によって指の設定が正しく行われる。上部指付け根押し当て部３の延長として点線で示したようにその両端を若干長くすることによって指７の挿入時の位置をより正確に設定することができる。
【００１６】
認証は、左右の手の１０本内の１本を用い、図１−（ｂ）の斜線部に示す指の第１関節部から第２関節部までの指のひら面に近い静脈の形状データを使用して行なわれ、認証対象指７を個人認証装置の指挿入部２に挿入することから開始され、以下の動作で行なわれる。尚、指は、左右の手の１０本内どの指でも良い。
【００１７】
まず、指挿入部２に指を挿入する際、指短幅の中心を視角的マークである三角マーク１に合せ、指先端を指挿入部２の指突き当て部４に当てると同時に指の付け根部分を上部指付け根押し当て部３につけるように指を挿入する。これらの指挿入動作が完了した時点で指先の腹部で突起部５を押下する。突起部５を押下することでスイッチ６がＯＮし、光源部２２が点灯、光源部２２からの透過光３１が指を通過し、指静脈データが撮像部２４に撮像される。撮像された指静脈画像データは、画像処理部２５において、位置ずれ補正処理等を行ない指静脈画像データを作成する。作成された指静脈画像データは、照合部２９において、予め記憶部２８に記憶されている指静脈画像データと照合処理が行なわれ、照合結果が通信処理部２６を経由し入退出管理コントローラ等の他機器３１に送信される。
【００１８】
このような認証動作において、指短幅の中心を三角マーク１に合せ、指先の腹部を突起部５に乗せることで指長手方向を軸とした指の平面的回転及び空間的回転を抑制し、指先端を指挿入部２の指突き当て部４に当てることで指挿入口から見て指の前後方向のずれを抑制すると同時に使用する静脈画像データの撮像位置を規定し、指根元部を上部指付け根押し当て部３につけ指先の腹部を指挿入面基準突起部５に乗せることで撮像部２４と指の位置関係が正しく設定され、又指の形がほぼ一義的に決まるので撮像部２４に撮像される指静脈画像データが再現性よく取得でき、精度の高い個人認証ができる。
【００１９】
本実施例においては、個人認証、又は登録にも用いられ、又、本装置は、認識コードを入力する入力部を設けることができる。
【００２０】
（実施例２）
図３は、本発明の個人認証装置の正面図（ａ）及び側面図である。本実施例は、指挿入部２を、図３に示すように指の上下及び左右のずれを制限した丸型の開口形状にしたものであり、図１では点線で示すように指根元部を上部指付け根押し当て部３の両端を長くするのに対してこの丸型の開口形状によって更に指の挿入による左右ずれを防止することができる。他の構成は、実施例１と同じである。又、指挿入部２の上部は実施例１の上部指付け根押し当て部３に対応しており、又その下部は実施例１と同様に構成することができる。
【００２１】
（実施例３）
図４は、本発明の個人認証装置の正面図（ａ）及び側面図である。本実施例においては、図４に示すように、実施例１の上部指付け根押し当て部３の代わりに下部指付け根押し当て部８を設けることにより、挿入指の左右ずれを防止することができ、本構成によっても本発明が達成できる。他の構成は、実施例１と同じである。また、指突き当て部４と突起部５は、合体させた構造でも達成できる。
【００２２】
【発明の効果】
本発明によれば、指の静脈画像を利用して個人又は複数人のグループにおける個人認証において、予め記憶されたデータに対して指の照合が左右どちらの手の指に対しても容易に正確な位置に設定できるので、高い再現性を持って指静脈画像を取得できると共に、高い認証精度を有する個人認証装置と個人認証方法及びその光源を提供することができる。
【図面の簡単な説明】
【図１】本発明の個人認証装置の構成図である。
【図２】本発明の個人認証装置の回路ブロックを示す図である。
【図３】本発明の個人認証装置の他の例を示す構成図である。
【図４】本発明の個人認証装置の他の例を示す構成図である。
【符号の説明】
１…三角マーク、２…指挿入部、３…上部指付け根押し当て部、４…指突き当て部、５…突起部、６…スイッチ、７…認証対象指、８…下部指付け根押し当て部、９…ケース、２１…個人認証装置、２２…光源部、２３…干渉フィルタ部、２４…撮像部、２５…画像処理部、２６…通信処理部、２７…制御部、２８…記憶部、２９…照合部、３０…光源から発せられる光、３１…他機器、３２…データ処理部。[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a novel personal authentication device, a personal authentication method, and a light source for authenticating an individual or a group of a plurality of persons using finger vein image data.
[0002]
[Prior art]
Conventionally, when performing personal authentication using finger vein image data, it is necessary to obtain a finger image with high reproducibility for the same person. The data acquisition unit uses the fact that the shape of the hand is almost uniquely determined when grasping, etc., and the data acquisition unit has a curvature, such as the shape of the door, in order to suppress the rotation of the planar finger. In order to suppress the spatial movement of the finger, the data acquisition unit is grasped with a plurality of fingers and an image is taken, whereby the mobility of the finger can be limited to translation.
[0003]
[Problems to be solved by the invention]
However, in Japanese Patent Application Laid-Open No. 2001-184507, the finger vein image data cannot be acquired with high reproducibility because the rotation of the finger in the front-rear direction cannot be suppressed. Has a drawback that the entire device becomes large and a large space for installing the authentication device is required.
An object of the present invention is to perform personal authentication in an individual or a group of a plurality of persons by using a vein image of a finger, and to easily set a finger collation with data stored in advance for both right and left fingers. An object of the present invention is to provide a personal authentication device, a personal authentication method, and a light source thereof that can obtain a finger vein image with high reproducibility and have high authentication accuracy.
[0004]
[Means for Solving the Problems]
The present invention provides a case provided with an insertion portion through which a fingerprint of one finger can be inserted toward the lower surface, a light source unit that generates transmitted light from the upper surface of the finger, and a light transmitting unit that transmits light at an arbitrary wavelength. , An imaging unit that captures transmitted light transmitted through the interference filter unit, and matching data that allows the vein image data of the finger output from the imaging unit to be matched with previously stored image data And an image processing unit for creating a personal authentication device.
[0005]
The finger insertion unit has a finger pressing unit that regulates the tip position of the finger, and a finger position regulation unit that sets at least one of the vertical position of the finger at the entrance of the finger insertion unit after the insertion. The interference filter section separates the transmitted light emitted from the light source section from other light, and the finger pressing section is provided so as to be inserted at a position where it stops between the palm and the first joint. Preferably.
[0006]
In other words, when the finger is inserted into the finger insertion unit of the personal authentication device, the displacement in the finger long axis direction, the displacement in the finger short axis direction, the rotation around the finger long axis, and the displacement of the finger from the vein image capturing unit are prevented. In addition, it is necessary to make the image capturing surfaces of the fingers the same, to make the finger insertion state the same at each finger insertion operation, and to improve the reproducibility of reading the finger vein data. Therefore, in order to prevent the displacement in the finger axis direction, a wall in which the finger tip abuts is provided at the innermost part of the finger insertion slot, and the case is provided to prevent displacement in the finger short axis direction and rotation around the finger axis. A triangular mark indicating the center of the insertion finger is provided at the entrance of the finger insertion unit, and a wall where the finger base pressing part and the finger tip abut on the upper part of the entrance of the finger insertion unit to prevent the finger from being displaced from the image pickup unit When inserting a finger into the finger insertion part, attach the tip of the finger to the finger butting part at the innermost part of the finger insertion port, and set the center of the finger long axis direction to the entrance of the finger insertion part of the case. When the person presses the button, the shape of the finger is almost uniquely determined when the person presses the button. Achieved by doing.
[0007]
A finger tip abutment part is provided at the innermost part of the finger insertion part, a projection part is provided at the position of the finger pad when the finger is inserted, and an upper finger base pressing part is provided at the upper part of the entrance of the finger insertion part. Thereby, the center of the short axis of the finger is aligned with the mark at the entrance of the finger insertion portion of the case, the finger is inserted, the tip of the finger is attached to the finger abutment portion at the back of the finger insertion portion, and the base of the finger is inserted into the finger insertion portion. By the finger insertion operation that attaches to the upper finger base pressing part at the upper part of the entrance and touches the finger pad to the protrusion, planar rotation and spatial rotation around the long axis of the finger when the finger is inserted, and positional deviation in front, rear, left and right Can be suppressed, and the position between the finger and the imaging unit can be defined, so that finger vein image data can be obtained with high reproducibility.
[0008]
Further, the present invention provides a step of irradiating the fingerprint of one finger with the lower surface, irradiating the finger with transmitted light from the upper surface thereof, imaging the transmitted light transmitted through the finger, and Having an authentication step of comparing the vein image data of the finger with the image data stored in advance, and irradiating transmitted light to one finger, and imaging the transmitted light transmitted through the finger. An individual authentication method is characterized in that vein image data between a first joint and a second joint of a finger is compared with image data stored in advance. Also in the latter method, it is preferable that the fingerprint of the finger is set to the lower surface and the transmitted light is radiated to the finger from the upper surface. Can be done.
[0009]
The setting of the insertion position of the finger with respect to the irradiation position of the transmitted light is performed by at least one of the top and bottom between the tip of the finger and the first joint from the palm, after the insertion of the finger, the inserted finger It is preferable to instruct the start of the transmission of the transmitted light and to use any finger since the distance from the tip of the finger to the first joint is almost the same as the authentication finger, and any finger may be used.
[0010]
The present invention also has at least five light emitting diodes that emit at least five far-infrared rays in a row on an insulating substrate, wherein the light emitting diodes are at least equally spaced between the first and second joints of the finger. A light source for a personal authentication device, wherein Preferably, one to three can be further provided at the same interval on both sides.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
(Example 1)
FIG. 1 is a front view (a) and a side view (b) of the personal authentication device of the present invention. FIG. 2 is a circuit block diagram of the present invention. As shown in FIG. 1, the personal authentication device emits far-infrared rays that emit transmitted light 30 from the upper surface of one finger inserted into the finger insertion unit 2 with the fingerprint of the finger facing downward in the case 9. A light source unit 22 having nine light emitting diodes (LEDs) 10 arranged in a line at equal intervals as light sources, transmitted light 30 of far-infrared light emitted from the light source unit 22, and light of a fluorescent lamp existing in an indoor environment. An interference filter unit 23 for separating artificial light or natural light, an imaging unit 24 including a CMOS camera module or a CCD camera module for imaging light transmitted through a finger, and light emitted from a light source 22 enter the imaging unit 24. When light is emitted, the switch unit 5 for generating a signal indicating the start of image processing configured to have a size such that the image of the first joint of the finger is not interrupted, and the image of the image captured by the imaging unit 24 De Constituted by the data processing unit 32 for performing data processing.
[0012]
The light source unit 22 has nine light emitting diodes (LEDs) 10 arranged on an insulating substrate and is covered with glass between the finger 7 and at least five light emitting diodes (LED) 10 between the first joint and the second joint of the finger. Are arranged at equal intervals in order to cope with persons with long fingers at the same intervals on both sides. By arranging at equal intervals in this manner, uniform light irradiation can be performed, and highly accurate authentication can be obtained.
[0013]
The upper finger base pressing portion 3 is provided on the entrance side of the insertion of the finger 7, has a concave portion corresponding to the thickness of the finger 7 to determine the insertion position of the finger 7, and can perform accurate positioning. A small space is formed at the lower part of the finger 7 so that the finger 7 does not come into direct contact with the cover covering the interference filter 23 so that the vein image is not deformed. Further, the upper finger base pressing portion 3 can be more accurately positioned by making both sides longer as shown by a dotted line. Further, similar projections can be provided over substantially the entire length of the space of the finger insertion portion 2 to form the above-mentioned space at the corresponding lower portion of the upper finger base pressing portion 3. The protrusion is provided with a groove or a recess having a width smaller than the thickness of the finger 7 at the center of its length, so that dust can be easily removed.
[0014]
The data processing unit 32 generates an image data for collation so that the vein image data of one finger output from the imaging unit 24 can be collated with data stored in the storage unit 28 in advance. A storage unit 28 for storing collation data registered in advance; a collation unit 29 for collating finger vein image data created in the image processing unit 25 with finger vein image data stored in the storage unit 28 in advance; The control unit 27 includes a control unit 27 that controls the inside of the unit 21 and a communication processing unit 26 that transmits a collation result to another device 31 such as an entry / exit management controller.
[0015]
Further, the finger insertion unit 2 of the personal authentication device has a purpose of restricting the insertion length of the finger 7 at the time of finger insertion, restricting the position of the finger at the time of capturing the image of the finger, and improving the reproducibility of the finger vein image. A finger abutting portion 4 for abutting the finger tip at the innermost portion of the finger insertion portion to prevent displacement in the finger long axis direction, and to prevent displacement in the finger short axis direction and rotation about the finger long axis. A triangular mark 1 indicating the center of the inserted finger at the entrance of the finger insertion portion of the case, and an upper finger base for pressing the finger base against the upper part of the entrance of the finger insertion portion to prevent the finger 7 from being displaced from the image pickup portion. A projection 5 is provided in front of the pressing unit 3 and the finger abutting unit 4, and the finger setting is correctly performed by these units. As shown by a dotted line, the position of the finger 7 at the time of insertion can be set more accurately by extending the both ends of the upper finger base pressing portion 3 as shown by dotted lines.
[0016]
The authentication uses one of the ten right and left hands, and the shape data of the vein close to the palm surface of the finger from the first joint to the second joint of the finger shown by the hatched portion in FIG. And is started by inserting the authentication target finger 7 into the finger insertion unit 2 of the personal authentication device, and is performed by the following operation. The fingers may be any of the ten fingers on the left and right hands.
[0017]
First, when a finger is inserted into the finger insertion unit 2, the center of the finger short width is aligned with the triangular mark 1 which is a visual angle mark, and the tip of the finger is applied to the finger butting unit 4 of the finger insertion unit 2 and at the same time, the base of the finger. The finger is inserted so that the part is attached to the upper finger base pressing portion 3. When these finger insertion operations are completed, the protrusion 5 is pressed by the abdomen of the fingertip. When the projection 5 is pressed, the switch 6 is turned on, the light source 22 is turned on, the transmitted light 31 from the light source 22 passes through the finger, and the finger vein data is imaged by the imaging unit 24. The photographed finger vein image data is subjected to positional deviation correction processing and the like in the image processing unit 25 to create finger vein image data. The created finger vein image data is subjected to collation processing with finger vein image data stored in advance in the storage unit 28 in the collation unit 29, and the collation result is transmitted via the communication processing unit 26 to the entry / exit management controller or the like. It is transmitted to the other device 31.
[0018]
In such an authentication operation, the center of the finger short width is aligned with the triangular mark 1 and the abdomen of the fingertip is placed on the protrusion 5, thereby suppressing the planar rotation and the spatial rotation of the finger around the longitudinal direction of the finger, The tip of the finger is brought into contact with the finger butting portion 4 of the finger insertion portion 2 to suppress the displacement of the finger in the front-rear direction when viewed from the finger insertion opening, and at the same time, define the imaging position of the vein image data to be used, and By placing the abdomen of the fingertip on the finger base pressing portion 3 on the finger insertion surface reference projection 5, the positional relationship between the imaging portion 24 and the finger is set correctly, and the shape of the finger is almost uniquely determined. Finger vein image data to be captured can be acquired with good reproducibility, and highly accurate personal authentication can be performed.
[0019]
In the present embodiment, it is also used for personal authentication or registration, and the present apparatus can be provided with an input unit for inputting a recognition code.
[0020]
(Example 2)
FIG. 3 is a front view (a) and a side view of the personal authentication device of the present invention. In the present embodiment, the finger insertion section 2 has a round opening shape in which the vertical and horizontal displacement of the finger is limited as shown in FIG. 3, and the finger base is formed as shown by a dotted line in FIG. Although the both ends of the upper finger base pressing portion 3 are lengthened, the round opening shape can further prevent left-right displacement due to insertion of a finger. Other configurations are the same as those of the first embodiment. The upper portion of the finger insertion portion 2 corresponds to the upper finger base pressing portion 3 of the first embodiment, and the lower portion can be configured in the same manner as the first embodiment.
[0021]
(Example 3)
FIG. 4 is a front view (a) and a side view of the personal authentication device of the present invention. In the present embodiment, as shown in FIG. 4, by providing the lower finger base pressing part 8 instead of the upper finger base pressing part 3 of the first embodiment, it is possible to prevent the insertion finger from shifting left and right. The present invention can also be achieved by this configuration. Other configurations are the same as those of the first embodiment. Further, the finger butting portion 4 and the protruding portion 5 can be achieved by a united structure.
[0022]
【The invention's effect】
Advantageous Effects of Invention According to the present invention, in personal authentication in an individual or a group of a plurality of persons using a vein image of a finger, the collation of a finger against data stored in advance is easily and accurately performed on the left or right hand. Since the finger vein image can be acquired with high reproducibility, a personal authentication device and a personal authentication method having high authentication accuracy and a light source thereof can be provided.
[Brief description of the drawings]
FIG. 1 is a configuration diagram of a personal authentication device of the present invention.
FIG. 2 is a diagram showing a circuit block of the personal authentication device of the present invention.
FIG. 3 is a configuration diagram showing another example of the personal authentication device of the present invention.
FIG. 4 is a configuration diagram showing another example of the personal authentication device of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Triangular mark, 2 ... Finger insertion part, 3 ... Upper finger base contact part, 4 ... Finger contact part, 5 ... Projection part, 6 ... Switch, 7 ... Authentication target finger, 8 ... Lower finger base contact part , 9 case, 21 personal authentication device, 22 light source unit, 23 interference filter unit, 24 imaging unit, 25 image processing unit, 26 communication processing unit, 27 control unit, 28 storage unit, 29 ... Matching unit, 30 light emitted from the light source, 31 other devices, 32 data processing unit.

Claims (6)

１本の指の指紋を下面に向けて挿入できる挿入部を設けたケースと、前記指に対してその上面から透過光を照射する光源部と、任意波長に対して光透過性を有する干渉フィルタ部と、該干渉フィルタ部を透過した透過光を撮像する撮像部と、該撮像部から出力される前記指の静脈画像データの画像処理部とを有することを特徴とする個人認証装置。A case provided with an insertion portion through which a fingerprint of one finger can be inserted toward the lower surface, a light source portion for irradiating the finger with transmitted light from the upper surface, and an interference filter having a light transmittance for an arbitrary wavelength A personal authentication device, comprising: an image capturing unit that captures transmitted light transmitted through the interference filter unit; and an image processing unit that processes the finger vein image data output from the image capturing unit. 請求項１において、前記指挿入部は、前記指の先端位置を規制する指押し当て部と、前記挿入後の前記指挿入部の入口における前記指の上下位置の少なくとも一方を設定する指位置規制部を有することを特徴とした個人認証装置。2. The finger insertion part according to claim 1, wherein the finger insertion part is a finger pressing part that regulates a tip position of the finger, and a finger position restriction that sets at least one of a vertical position of the finger at an entrance of the finger insertion part after the insertion. A personal authentication device characterized by having a unit. 請求項１又は２において、前記指挿入後の前記指先の腹部に対応する位置に前記画像処理部を駆動させる突起部を有することを特徴とする個人認証装置。3. The personal authentication device according to claim 1, further comprising a protrusion that drives the image processing unit at a position corresponding to the abdomen of the fingertip after the finger is inserted. 4. １本の指の指紋を下面にし、前記指に対してその上面から透過光を照射する工程と、前記指を透過した透過光を撮像する工程と、該撮像された前記指の静脈画像データを予め記憶部された画像データと照合する認証工程とを有することを特徴とする個人認証方法。Setting the fingerprint of one finger on the lower surface, irradiating the finger with transmitted light from the upper surface, imaging the transmitted light transmitted through the finger, and converting the imaged vein image data of the finger. An authentication step of collating with image data stored in advance. 一本の指に対して透過光を照射し、前記指を透過した透過光によって撮像された前記指の第１関節と第２関節との間の静脈画像データを予め記憶部された画像データと照合すること特徴とする個人認証方法。A single finger is irradiated with transmitted light, and vein image data between the first joint and the second joint of the finger captured by the transmitted light transmitted through the finger is stored in advance as image data. A personal authentication method characterized by collation. 絶縁基板上に一列に少なくとも５個の遠赤外線を発光する発光ダイオードを有し、該発光ダイオードが少なくとも指の第１関節と第２関節との間に対応して等間隔に配置されていることを特徴とする個人認証装置用光源。At least five light-emitting diodes that emit far-infrared rays are arranged in a row on an insulating substrate, and the light-emitting diodes are arranged at least at equal intervals corresponding to at least a first joint and a second joint of a finger. A light source for a personal authentication device characterized by the above-mentioned.
JP2002213686A 2002-07-23 2002-07-23 Personal authentication device Expired - Lifetime JP3925338B2 (en)

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JP2006011988A (en) * 2004-06-28 2006-01-12 Fujitsu Ltd Imaging device for palm authentication
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JP2007075305A (en) * 2005-09-14 2007-03-29 Hitachi Ltd Personal authentication device, and method
CN100351850C (en) * 2004-09-30 2007-11-28 日立欧姆龙金融***有限公司 Imaging apparatus and personal identification device
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JP2006011988A (en) * 2004-06-28 2006-01-12 Fujitsu Ltd Imaging device for palm authentication
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US7697730B2 (en) 2004-07-30 2010-04-13 Fujitsu Limited Guidance screen control method of biometrics authentication device, biometrics authentication device, and program for same
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US7725733B2 (en) 2004-10-08 2010-05-25 Fujitsu Limited Biometrics authentication method and biometrics authentication device
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JP4692174B2 (en) * 2005-09-14 2011-06-01 株式会社日立製作所 Personal authentication device and door opening / closing system
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KR100852828B1 (en) 2006-07-13 2008-08-18 가부시키가이샤 히타치세이사쿠쇼 Vein authentication device
US8254641B2 (en) 2007-07-25 2012-08-28 Sony Corportion Biometrics authentication system
US8233149B2 (en) 2007-07-30 2012-07-31 Sony Corporation Biometric image pickup apparatus
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US8101912B2 (en) 2007-11-27 2012-01-24 Sony Corporation Image-taking apparatus and method thereof
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