JP5801729B2 - Finger vein authentication device - Google Patents

Finger vein authentication device Download PDF

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JP5801729B2
JP5801729B2 JP2012009600A JP2012009600A JP5801729B2 JP 5801729 B2 JP5801729 B2 JP 5801729B2 JP 2012009600 A JP2012009600 A JP 2012009600A JP 2012009600 A JP2012009600 A JP 2012009600A JP 5801729 B2 JP5801729 B2 JP 5801729B2
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finger
rest
shape
authentication device
vein authentication
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JP2013149115A5 (en
JP2013149115A (en
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雅也 遠藤
雅也 遠藤
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Hitachi Omron Terminal Solutions Corp
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/117Identification of persons
    • A61B5/1171Identification of persons based on the shapes or appearances of their bodies or parts thereof
    • A61B5/1172Identification of persons based on the shapes or appearances of their bodies or parts thereof using fingerprinting
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00Measuring for diagnostic purposes; Identification of persons
    • A61B5/48Other medical applications
    • A61B5/4887Locating particular structures in or on the body
    • A61B5/489Blood vessels
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/60Static or dynamic means for assisting the user to position a body part for biometric acquisition
    • G06V40/63Static or dynamic means for assisting the user to position a body part for biometric acquisition by static guides
    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06VIMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V40/00Recognition of biometric, human-related or animal-related patterns in image or video data
    • G06V40/10Human or animal bodies, e.g. vehicle occupants or pedestrians; Body parts, e.g. hands
    • G06V40/14Vascular patterns

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  • Multimedia (AREA)
  • Vascular Medicine (AREA)
  • Measurement Of The Respiration, Hearing Ability, Form, And Blood Characteristics Of Living Organisms (AREA)
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Description

本発明は、個人認証を行う生体認証装置に関し、特に、指静脈認証装置に関する。   The present invention relates to a biometric authentication device that performs personal authentication, and more particularly to a finger vein authentication device.

金融機関等で本人確認を行う生体認証技術として、静脈や指紋を利用した技術が数多く開発されている。その中で、特に指静脈認証技術は認証精度、セキュリティの面で高い信頼を得て、数多くの製品が市場に流通している。   Many techniques using veins and fingerprints have been developed as biometric authentication techniques for verifying the identity of financial institutions. In particular, finger vein authentication technology has gained high trust in terms of authentication accuracy and security, and many products are on the market.

その指静脈認証装置において、登録時と認証時で指を置く位置の前後左右のずれや指の回転が発生しているなど、指の置き方が一定ではないことによって認証率が低下する事象が問題となっているが、これらに対して様々な工夫が検討され実用化されている。この認証率が低下する事象の壱つとして、指を装置に置く際に指を押し付けてしまう使用者が少なからず存在し、この押し付けにより静脈の血流が悪くなったり、押し潰されて静脈パターンが変わってしまったりといった事象があり、認証精度を著しく低下させる要因となっている。   In the finger vein authentication device, there is an event that the authentication rate decreases because the finger placement is not constant, such as the position where the finger is placed before and after registration and at the time of authentication, such as deviation of the front and rear, left and right, etc. There are problems, but various ideas have been studied and put into practical use. As one of the events that this authentication rate decreases, there are not a few users who press the finger when placing it on the device, and the blood flow of the veins deteriorates due to this pressing, or the vein pattern is crushed Is a factor that significantly reduces authentication accuracy.

これに対処する技術として、静脈の撮像部位に対して指の表面が撮像面と接しない形状
(特許文献1参照)がある。また、指の断面の形状を模った曲線形状(特許文献2参照)の指置き台が考案されており、指の位置を規定する際の左右方向のずれの防止を図ったものがある。
As a technique for dealing with this, there is a shape in which the surface of the finger does not contact the imaging surface with respect to the imaging region of the vein (see Patent Document 1). Further, a finger placing table having a curved shape (see Patent Document 2) simulating the shape of a finger cross section has been devised, and there is one that attempts to prevent a lateral shift when defining the position of the finger.

特開2008−17973号公報JP 2008-17973 A 特開2009−110132号公報JP 2009-110132 A

前記従来技術においては、撮像部分の指の静脈形状の変形の抑止を図るため、撮像部位としていない指根元部位に指置き台を配置することや、その指置き台の形状として指の丸みを模ることで、指と指置き台との接触面積を増やし、押し付けの圧力を分散させることで血流圧迫を軽減させることは出来る。しかし、指を強く押し付けた場合には指と密着し、血流部分が圧迫されてしまうため、正常な静脈画像が得られない状態となってしまう。   In the prior art, in order to suppress the deformation of the finger vein shape of the imaging part, a finger rest is placed at the base of the finger that is not the imaging part, and the roundness of the finger is simulated as the shape of the finger rest. By increasing the contact area between the finger and the finger rest and distributing the pressing pressure, blood pressure can be reduced. However, when the finger is pressed strongly, it comes into close contact with the finger and the blood flow portion is compressed, so that a normal vein image cannot be obtained.

しかも、細い指の場合には丸みによる圧迫低減効果は殆どなくなってしまうのに対して、指の太さは個人差や利用する指により大きく異なるため、万能な形状ではなく、実際の運用においても、置いた指を強く押し付けてしまう利用者が後を絶たず、認証率の低下を十分に抑止できていない状況があり、円滑な運用を妨げている。   Moreover, in the case of a thin finger, the effect of reducing the pressure due to roundness is almost lost, but the thickness of the finger varies greatly depending on individual differences and the finger used, so it is not a versatile shape, but in actual operation There is a situation in which users who press their fingers strongly do not keep up, and the decline in authentication rate is not sufficiently suppressed, which hinders smooth operation.

本発明は、上記に鑑みてなされたものであって、指根元部位の静脈の圧迫による認証率低下を軽減することが可能な指静脈認証装置を提供することを目的とする。   The present invention has been made in view of the above, and an object of the present invention is to provide a finger vein authentication device capable of reducing a decrease in authentication rate due to compression of a vein at a finger base portion.

上述した課題を解決し、目的を達成するために、本発明にかかる指静脈認証装置は、指静脈により生体認証する指静脈認証装置において、利用者の指を置くための指置き台であって、前記指の載置部がV字形状をなすことにより、前記利用者の指と前記載置部との間に空間を形成する指置き台を備えたことを特徴とする。   In order to solve the above-described problems and achieve the object, a finger vein authentication device according to the present invention is a finger rest for placing a user's finger in a finger vein authentication device that performs biometric authentication using finger veins. The finger placing portion is V-shaped to provide a finger rest that forms a space between the user's finger and the placing portion.

また、本発明にかかる指静脈認証装置は、指静脈により生体認証する指静脈認証装置において、利用者の指を置くための指置き台であって、前記指の載置部が中央部で接線を共有する円弧を模った谷カーブ型の形状をなすことにより、前記利用者の指と前記載置部との間に空間を形成する指置き台を備えたことを特徴とする。   The finger vein authentication device according to the present invention is a finger placement table for placing a user's finger in a finger vein authentication device that performs biometric authentication using a finger vein, wherein the finger placement portion is tangent at a central portion. A finger rest that forms a space between the user's finger and the placement portion described above is provided by forming a valley curve shape that imitates an arc that shares the same.

本発明によれば、指根元部位の静脈の圧迫による認証率低下を軽減することが可能な指静脈認証装置を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, the finger vein authentication apparatus which can reduce the authentication rate fall by the pressure of the vein of a finger base part can be provided.

指静脈認証装置の外観図。The external view of a finger vein authentication apparatus. 指静脈認証装置の構造と使用状態を示す側面図。The side view which shows the structure and use condition of a finger vein authentication apparatus. 指静脈認証装置の使用状態を示す指根元部の断面図。Sectional drawing of the finger base part which shows the use condition of a finger vein authentication apparatus. 指置き台をV字型とした指静脈認証装置の外観図。The external view of the finger vein authentication apparatus which used the finger rest as a V shape. 指置き台に指を押し付けた時の圧迫状態を示す指根元部の断面図。Sectional drawing of the finger base part which shows the compression state when a finger is pressed on a finger rest. V字型の指置き台に指を押し付けた時の圧迫状態を示す指根元部の断面図。Sectional drawing of a finger base part which shows the compression state when a finger is pressed on a V-shaped finger rest. 指置き台を谷カーブ型とした指静脈認証装置の外観図。The external view of the finger vein authentication apparatus which used the finger rest as a valley curve type.

以下に添付図面を参照して、本発明にかかる指静脈認証装置の実施の形態を詳細に説明する。
(実施例1)
図1は、本実施形態に係る指静脈認証装置の外観図を示す図である。図1に示すように、本実施形態に係る指静脈認証装置11は、利用者の指を置くための指置き台12と、指先を支持するための指先支持台13とを有し、指置き台12と指先支持台13とによって囲まれ、その上方が開口した開口部14が形成されている。また、指置き台12の内側面には指16を照射するための光源を有した光源照射部15が備えられている。
Exemplary embodiments of a finger vein authentication device according to the present invention will be described below in detail with reference to the accompanying drawings.
(Example 1)
FIG. 1 is a diagram showing an external view of a finger vein authentication device according to the present embodiment. As shown in FIG. 1, the finger vein authentication device 11 according to the present embodiment includes a finger rest 12 for placing a user's finger and a fingertip support 13 for supporting the fingertip. An opening 14 is formed which is surrounded by the base 12 and the fingertip support base 13 and has an upper opening. Further, a light source irradiation unit 15 having a light source for irradiating the finger 16 is provided on the inner surface of the finger rest 12.

図2は、指静脈認証装置11の構造と使用状態を示す側面図である。図2を用いて指静脈認証装置11の概略構造について説明する。図2に示すように、利用者は、指置き台21に指26の根元をセットし、指先支持台22に指26の指先をセットする。このとき、光源照射部24が指26に対して近赤外光を発光させることにより、指26に近赤外光が照射される。近赤外光は指の内部に透過するが、血中成分により吸収される性質を有している為、近赤外光が照射された状態の指26を下方向に配置された撮像素子25によって撮像すると、撮像領域27の範囲の静脈のパターンが影のように映し出される。この映し出された静脈パターンが、生体認証個人データとして生体認証に使用されることとなる。
開口部23には光を透過する素材の仕切り板を有し、装置内部への埃などの異物混入を防ぐ役割を有している。この仕切り板として近赤外光だけを透過するフィルターを使用してもよい。
FIG. 2 is a side view showing the structure and use state of the finger vein authentication device 11. A schematic structure of the finger vein authentication device 11 will be described with reference to FIG. As shown in FIG. 2, the user sets the base of the finger 26 on the finger rest 21 and sets the fingertip of the finger 26 on the fingertip support 22. At this time, the light source irradiation unit 24 causes the finger 26 to emit near infrared light, so that the finger 26 is irradiated with near infrared light. Near-infrared light is transmitted through the inside of the finger, but is absorbed by blood components, so that the image sensor 25 is arranged with the finger 26 irradiated with the near-infrared light downward. When imaging is performed, the vein pattern within the imaging region 27 is projected like a shadow. The projected vein pattern is used for biometric authentication as biometric personal data.
The opening 23 has a partition plate made of a material that transmits light, and has a role of preventing foreign matters such as dust from entering the apparatus. A filter that transmits only near infrared light may be used as the partition plate.

図3は、指静脈認証装置11の使用状態における指根元部の断面図である。図3では、図2のように指26をおいた状態において指置き台21の部位の断面を示しており、すなわち指根元部の断面図でもある。本実施の形態では、前述の指静脈認証装置11の中で、指置き台21の形状について説明するものであり、図4から図6、及び図1を用いて以下に示す。   FIG. 3 is a cross-sectional view of the finger base portion when the finger vein authentication device 11 is in use. FIG. 3 shows a cross-section of the part of the finger rest 21 with the finger 26 as shown in FIG. 2, that is, a cross-sectional view of the finger base. In the present embodiment, the shape of the finger rest 21 will be described in the above-described finger vein authentication device 11, and will be described below with reference to FIGS. 4 to 6 and FIG.

図4は、図1に対して、指置き台の形状に特徴を有した指静脈認証装置11の例を示す図である。図1の指静脈認証装置11の指置き台12が一見して指にフィットし、置き易いと思われるU字型の形状であるのに対して、図4に示す例では、指置き台42の形状をV字型とし、指を置いた状態において指の中央下部が角となる形状(左右対称となる形状)を持つ指静脈認証装置としている。このように、左右対称のV字形状となっているため、利用者の指を中央に導きやすいようになっている。   FIG. 4 is a diagram showing an example of the finger vein authentication device 11 having a feature in the shape of the finger rest with respect to FIG. The finger placement table 12 of the finger vein authentication device 11 of FIG. 1 fits a finger at first glance and has a U-shaped shape that seems to be easy to place, whereas in the example shown in FIG. The finger vein authentication device has a V-shape and a shape in which the lower center of the finger is a corner (a shape that is symmetrical) when the finger is placed. Thus, since it is a left-right symmetric V shape, it is easy to guide a user's finger to the center.

ここで、図1の指置き台12の形状は、U字型のようなカーブを持たない平坦な水平台となる直線形状とした従来実施形態もあるが、この場合は指中央部が必ず圧迫される形状となってしまい、本発明における課題としている静脈の圧迫に対しては、U字型の場合と同等以下の機能のみを有していると考えられるため、以下、直線形状については言及せず、U字型の形状のみを従来実施形態として記述する。   Here, there is a conventional embodiment in which the shape of the finger rest 12 in FIG. 1 is a linear shape that is a flat horizontal base having no U-shaped curve. In this case, the finger center portion is always compressed. Since it is considered that the vein compression, which is the subject of the present invention, has only a function equal to or less than that of the U-shaped case, the following description will refer to the linear shape. Only the U-shaped shape is described as a conventional embodiment.

図5は、図3に示した従来の指静脈認証装置の使用状態を示す指根元部の断面図と同様であるが、指の太さを、太い指、平均的太さの指、細い指、の3パターンに分類し、U字型の指置き台51にそれぞれの指が置かれた状態を示す図としている。図5においては、指の断面内部の矢印によって圧迫状態を示しており、指を押し付けた時の静脈の圧迫状態が指の太さによって大きく異なることを表現している。   FIG. 5 is the same as the cross-sectional view of the finger base portion showing the usage state of the conventional finger vein authentication device shown in FIG. 3, but the thickness of the finger is changed to a thick finger, an average thickness finger, and a thin finger. These patterns are classified into the following three patterns, and each finger is placed on the U-shaped finger rest 51. In FIG. 5, the compression state is indicated by an arrow inside the cross section of the finger, and expresses that the compression state of the vein when the finger is pressed greatly varies depending on the thickness of the finger.

また、U字型の指置き台51では、弧の大きさに対して細い指の場合に、必ずしも指が中央に置かれず、左右にずれた状態で押し付けられることもあり、同じ指でも使用する度に圧迫状態が変化してしまうという弊害もある。この圧迫状態はU字部の弧の大きさや曲率などによっても変わってくるが、指の太さとの相関関係にあるため、平均的太さの指に対して丸みが一致する弧の大きさとなるように指置き台51の形状を固定したものと仮定して考えて問題はない。このように、静脈の圧迫状態が指の太さで異なるということは、血流への影響に個人差が現れ、安定した認証精度の指静脈認証装置を提供できているとは言えないのが従来の実施形態となっている。   Further, in the U-shaped finger rest 51, when the finger is thin with respect to the size of the arc, the finger is not necessarily placed at the center but may be pressed in a state shifted to the left or right, and the same finger is used. There is also a harmful effect that the compression state changes every time. This compression state varies depending on the arc size and curvature of the U-shaped part, but since it has a correlation with the thickness of the finger, it becomes an arc size whose roundness matches the finger of average thickness. Thus, there is no problem assuming that the shape of the finger rest 51 is fixed. As described above, the fact that the compression state of the veins varies depending on the thickness of the finger means that individual differences appear in the influence on blood flow, and it cannot be said that a finger vein authentication device with stable authentication accuracy can be provided. This is a conventional embodiment.

これに対して、図6に示す指置き台61のようにV字型とすると、指の中央下部は角となっているため、指の太さに関係なく必ず隙間ができる。このV字型にされた指置き台61のV字部分を90度より鋭角とした場合のほうが、よりU字型の形状とは異なる形状となるため、指の太さの影響をより受けにくいと考えられる。さらに、U字型に比べ、指を中央に導き易い形状であり、指を何度置き直しても、圧迫される面が常に同じ部位となり、且つ圧迫の力を左右均等にする効果も期待できる形状となっていると言える。   On the other hand, if it is V-shaped like the finger rest 61 shown in FIG. 6, since the central lower part of the finger is a corner, a gap is always formed regardless of the thickness of the finger. When the V-shaped portion of the V-shaped finger rest 61 has an acute angle of more than 90 degrees, the shape is different from the U-shaped shape, and thus is less susceptible to the thickness of the finger. it is conceivable that. Furthermore, compared to the U-shape, it is easier to guide the finger to the center, and no matter how many times the finger is repositioned, the surface to be pressed is always the same part, and the effect of equalizing the right and left pressure can be expected. It can be said that it has a shape.

本発明の実施形態の外観図を示している図4において、近赤外光の照射について、光源照射部45のように指46の側面から照射する形態としているが、本発明において照射方式を限定するものではなく、指46の上面、下面、斜めなどから照射する方式の指静脈認証装置に対しても本発明を実施することは可能である。
(実施例2)
図7に、指置き台72を谷カーブ型とした指静脈認証装置の外観を示す。
本発明を前述の実施形態1に示したV字型に限定することなく、図7に示す様な中央部で接線を共有する円弧を模った谷カーブ型の指置き台72とする。このように、指置き台72の形状とすることで、指の接触面積をV字型の指置き台42よりも小さくすることが可能であり、指を強く押し付けた時の静脈圧迫低減効果において、単にV字型とした場合と同等以上の効果を得ることが可能となる。この形状を用いるか否かについては、指静脈認証装置のデザインや、生産性等、様々な背景に基づき使い分ければよい。
In FIG. 4 which shows the external view of the embodiment of the present invention, near-infrared light is irradiated from the side of the finger 46 like the light source irradiation unit 45, but the irradiation method is limited in the present invention. However, the present invention can also be applied to a finger vein authentication apparatus that irradiates from the upper surface, lower surface, or diagonal direction of the finger 46.
(Example 2)
FIG. 7 shows the appearance of a finger vein authentication device in which the finger rest 72 is a valley curve type.
The present invention is not limited to the V-shape shown in the first embodiment, and a valley-curved finger placing table 72 simulating an arc sharing a tangent at the center as shown in FIG. In this way, by adopting the shape of the finger rest 72, it is possible to make the finger contact area smaller than the V-shaped finger rest 42, and in the effect of reducing venous compression when the finger is strongly pressed Thus, it is possible to obtain an effect equal to or greater than that of a simple V-shape. Whether or not this shape is used may be selected based on various backgrounds such as the design of the finger vein authentication device and productivity.

このように、実施例1においては、指静脈認証装置は指の根元を置く部位の形状として、真下から支える形状ではなく、どの様な太さの指を対象とした場合においても、指を置いた時、指の中央下部には必ず空間ができるよう、指の両脇(斜め下)を支える形状の指置き台を有している。具体的な形状として、V字型の指置き台形状がその壱つとなるが、V字型の指置き台では、指を挟み込み、中央、下方向に向かって直線的に狭くなり中央部で角を持つ形状である。実施例1の場合と同様に、その角度は概ね90度より鋭角とすることで、その効果がより確実に得られる形状となるが、本発明において特定、及び限定するものではない。   As described above, in the first embodiment, the finger vein authentication device does not support the shape of the part where the base of the finger is placed, but supports the finger regardless of the thickness of the finger. In order to ensure that there is always a space in the lower center of the finger, it has a finger rest that is shaped to support both sides of the finger (diagonally below). As a specific shape, a V-shaped finger rest is one of them, but with a V-shaped finger rest, the fingers are pinched and become narrower in a straight line toward the center and downward. It is a shape with As in the case of the first embodiment, the angle is set to an acute angle of more than 90 degrees so that the effect can be obtained more reliably. However, the present invention is not specified or limited.

また、実施例2においては、上記に類似して、直線ではなく指の丸みに反した曲線(中央向きに凸の曲線)を持たせ、中央部で接線を共有する円弧を模った谷カーブ型の指置き台形状としているため、この場合もV字型の指置き台と同様に指の中央下部には必ず空間ができる構成としている。弧の形状によって本発明の効果に差異がでるが、本発明において特定、及び限定するものではない。   Further, in the second embodiment, similar to the above, a valley curve simulating an arc sharing a tangent at the center portion with a curved line (curved convex toward the center) which is not a straight line but against the roundness of the finger. In this case as well, a space is always formed at the lower center of the finger as in the case of the V-shaped finger rest. The effect of the present invention varies depending on the shape of the arc, but is not specified or limited in the present invention.

これらの構成とすることにより、指静脈を用いた生体認証において、指を強く押し付けてしまう利用者に対して、指の太さの影響を大きく受けることなく指の中央下部に空間を維持できることにより、指根元部位の静脈を圧迫する面積が大幅に小さくなり、指根元部位の血流の圧迫を最小限に抑制することができる。すなわち、指根元部位の血流に関して、多様な太さの指に対しても定常的に圧迫防止の効果が得られる指置き台の形状を有する指静脈認証装置を提供することができる。さらには、このように静脈の圧迫という認証率の低下要因の壱つを大きく改善することで、現状より安定した認証が実現可能な指静脈認証装置を提供することができる。   By adopting these configurations, it is possible to maintain a space in the lower center of the finger without being greatly affected by the thickness of the finger for a user who strongly presses the finger in biometric authentication using the finger vein. The area for compressing the vein at the base of the finger root is significantly reduced, and the pressure of blood flow at the base of the finger root can be minimized. That is, it is possible to provide a finger vein authentication device having the shape of a finger rest that can obtain a constant pressure-preventing effect even for fingers of various thicknesses with respect to blood flow at the finger base portion. Furthermore, by greatly improving one of the factors causing the decrease in the authentication rate such as vein compression in this way, it is possible to provide a finger vein authentication device capable of realizing more stable authentication than the current situation.

11…指静脈認証装置
12…指置き台
13…指先支持台
14…開口部
15…光源照射部
16…指
21…指置き台
22…指置き台
23…開口部
24…光源照射部
25…撮像素子
26…指
27…撮像領域
31…指置き台の断面
32…指の断面
41…指静脈認証装置
42…指置き台
43…指先支持台
44…開口部
45…光源照射部
46…指
51…指置き台
52…太い指の断面
53…平均的太さの指の断面
54…細い指の断面
61…指置き台
62…太い指の断面
63…平均的太さの指の断面
64…細い指の断面
71…指静脈認証装置
72…指置き台
73…指先支持台
74…開口部
75…光源照射部
76…指。
DESCRIPTION OF SYMBOLS 11 ... Finger vein authentication apparatus 12 ... Finger rest 13 ... Finger tip support 14 ... Opening 15 ... Light source irradiation part 16 ... Finger 21 ... Finger rest 22 ... Finger rest 23 ... Opening 24 ... Light source irradiation part 25 ... Imaging Element 26 ... Finger 27 ... Imaging region 31 ... Cross section 32 of finger rest ... Finger cross section 41 ... Finger vein authentication device 42 ... Finger rest 43 ... Finger tip support 44 ... Opening 45 ... Light source irradiation section 46 ... Finger 51 ... Finger rest 52 ... Thick finger cross section 53 ... Average finger cross section 54 ... Thin finger cross section 61 ... Finger rest 62 ... Thick finger cross section 63 ... Average thickness finger cross section 64 ... Thin finger Section 71 ... Finger vein authentication device 72 ... Finger rest 73 ... Fingertip support 74 ... Opening 75 ... Light source irradiation unit 76 ... Finger.

Claims (4)

指静脈により生体認証する指静脈認証装置において、
利用者の指の根元を置くための指置き台であって、V字形状をなすことにより前記利用者の指の根元と前記指置き台との間に空間を形成する前記指置き台と、前記利用者の指先を支持する指先支持台であって、前記V字形状とは異なる形状をなす前記指先支持台とを備え、前記指置き台と前記指先支持台とによって囲まれ、その上方が開口した開口部が形成されている、
ことを特徴とする指静脈認証装置。
In a finger vein authentication device that performs biometric authentication using a finger vein,
A finger rest for placing the base of the user's finger, wherein the finger rest forms a space between the finger base and the finger rest by forming a V shape; A fingertip support for supporting the user's fingertips, the fingertip support having a shape different from the V-shape, and surrounded by the finger rest and the fingertip support; An open opening is formed,
A finger vein authentication device characterized by that.
前記指置き台が形成する前記V字形状は左右対称であり、前記V字形状の先端部の角度は鋭角に形成されている、
ことを特徴とする請求項1に記載の指静脈認証装置。
The V-shape formed by the finger rest is bilaterally symmetric, and the V-shaped tip has an acute angle.
The finger vein authentication device according to claim 1.
指静脈により生体認証する指静脈認証装置において、
利用者の指の根元を置くための指置き台であって、中央部で接線を共有する円弧を模った谷カーブ型の形状をなすことにより前記利用者の指の根元と前記指置き台との間に空間を形成する前記指置き台と、前記利用者の指先を支持する指先支持台であって、前記谷カーブ型の形状とは異なる形状をなす前記指先支持台とを備え、前記指置き台と前記指先支持台とによって囲まれ、その上方が開口した開口部が形成されている、
ことを特徴とする指静脈認証装置。
In a finger vein authentication device that performs biometric authentication using a finger vein,
A finger rest for placing the base of the user's finger, wherein the root of the user's finger and the finger rest are formed by forming a valley curve shape imitating an arc sharing a tangent at the center. The finger rest that forms a space between the fingertip, and a fingertip support that supports the fingertip of the user, the fingertip support that has a shape different from the valley curve shape, Surrounded by the finger rest and the fingertip support, an opening is formed in which the top is opened.
A finger vein authentication device characterized by that.
前記指置き台が形成する前記谷カーブ型の形状は左右対称であり、前記谷カーブ型の形状の先端部の角度は鋭角に形成されている、
ことを特徴とする請求項3に記載の指静脈認証装置。
The valley curve shape formed by the finger rest is bilaterally symmetric, and the angle of the tip of the valley curve shape is an acute angle.
The finger vein authentication device according to claim 3.
JP2012009600A 2012-01-20 2012-01-20 Finger vein authentication device Expired - Fee Related JP5801729B2 (en)

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