KR20070095757A - Biometrics equipment and automated teller machine - Google Patents

Abstract

A biometrics authentication equipment and an ATM(Automated Teller Machine) are provided to offer a light shielding cover with a shape not causing damage to the main body of the ATM even when the opening of the ATM is open, thereby improving the accuracy of biometrics authentication and the efficiency of repair. A biometrics authentication equipment(103) comprises the followings: a light source unit(301) which radiates light to a finger in the side; an interference filter(302) which has light permeability for an arbitrary wavelength of the light; an image pickup unit which is arranged in the lower part of the interference filter and photographs transmitted light transmitting the interference filter; and a light shielding cover(104) which blocks external light entering into the image pickup unit and where a part of covering a finger is higher than its opposite part.

Description

Biometric Authentication and Cash Automatic Transaction Device {BIOMETRICS EQUIPMENT AND AUTOMATED TELLER MACHINE}

1 is an example of an external view when a user normally uses an ATM equipped with a biometric authentication device.

2 is an example of a block diagram of an ATM equipped with a biometric authentication device.

3 is an example of an external perspective view of a biometric authentication device.

4 is an example of a cross-sectional view of a biometric authentication device.

5 is an example of design of a biometric authentication device.

6 is an example of a side view in the case where a user normally uses an ATM equipped with a biometric authentication device.

Fig. 7 is an example of a side view in the case where a related person repairs an ATM equipped with a biometric authentication device.

It is an example of the external view when a near-infrared cut film is provided in a light shielding cover.

9 is an example of a cross-sectional view of the biometric authentication device in the case where the light shielding cover is automatically installed.

10 is an example of a block diagram of a biometric authentication device in the case where the light shielding cover is automatically installed.

11 is an example of a flowchart of an automatically installed shading cover.

12 is an example of a cross-sectional view of an upper (lower) sensor.

13 is an example of a cross-sectional view of an upper (lower) sensor.

14 is another example of the external view of the biometric authentication device in the case where the light shielding cover is automatically installed.

15 is another example of the cross-sectional view of the biometric authentication device in the case where the light shielding cover is automatically installed.

It is another example of the external view when a near-infrared cut film is provided in a light shielding cover.

It is an example of the external perspective view of the biometric authentication device provided with the light shielding cover which attached the near-infrared cut film.

It is an example of sectional drawing of the biometric authentication apparatus provided with the light shielding cover of which the near-infrared cut film was mounted.

It is an example of sectional drawing of the biometric authentication apparatus which can attach a near-infrared cut film.

20 is an example of the design of a light shield cover.

It is an example of the light shielding cover which provided the opening part.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a biometric authentication device that performs identity verification using biometric authentication, and particularly relates to a technique that is very suitable for acquisition, maintenance, and the like of biometric images.

Recently, in the transactions by ATM (Automated TeL1er M AChine), the crime of stealing the cash out of the account by using the stolen password authentication number and the cash card to become the owner of the cash card is increasing rapidly. Each financial institution changes the method of identity verification, and the case which performs identity verification by the biometric information peculiar to the person who is not stolen is increasing. In addition, among the various biometric authentication methods, venous authentication is attracting attention due to its high precision.

As a vein authentication technique, Patent Document 1 discloses a finger authentication device, and the finger authentication device includes an external light shielding portion. The external light shielding part serves to shield external light intruding into the imaging unit, and is provided symmetrically to the left and right of the guide part, and has a concave shape in the entire length with a length along the contour of the finger outside the authentication target. In addition, both of them are larger than the length and height of the finger, and the tip thereof is lowered in a curve.

[Patent Document 1] Japanese Unexamined Patent Application Publication No. 2005-128936

When a biometric authentication device is provided in an ATM such as a financial institution, it is often provided on the same plane as the touch panel. In addition, the touch panel often has a configuration provided on a table protruding from the ATM to the user side. On the basis of this, Patent Document 1 has the following problems.

For example, patent document 1 is applied to ATM. If the table is lifted and the lower part of the table is exposed when the lower part of the table is repaired inside the ATM, the external light shielding portion of Patent Document 1 may collide with the ATM and damage both of them.

An object of the present invention is to provide a light shielding cover which can reliably block external light when imaging a living body by a camera, and which does not cause damage to each part during ATM maintenance work.

The distance from the contact of the light shielding cover on the side covering the finger to the highest position of the light shielding cover from the contact point on the upper surface of the lower part of the biometric authentication device with the top surface of the light shielding cover on the opposite side to the side covering the finger and the lower surface of the biometric authentication device The biometric authentication device is provided with a light shielding cover longer than a distance from a contact of to a point of contact with the lowest position in the light shielding cover.

EMBODIMENT OF THE INVENTION Below, embodiment which is very suitable for this invention is described in detail using drawing. In addition, these represent one Embodiment of this invention, and do not restrict the function of a structure, or a structure other.

Example 1

Fig. 1 shows a cash automatic transaction apparatus (hereinafter, referred to as ATM) equipped with a biometric authentication device, and enlarges the vicinity of the biometric authentication device, especially when the user normally uses it. 2 is a block diagram of an ATM equipped with a biometric authentication device. 1 and 2, each configuration of ATM will be described.

 The outer surface of the side operated by the user of the ATM 100 (the front side of the ATM 100) is composed of a front panel. The front panel can be divided into three, for example, top to bottom, top front panel 107, middle front panel 108, and bottom front panel 109. The upper front panel 107 and the lower front panel 109 are configured to face almost perpendicularly to the user. On the other hand, the intermediate part front panel 108 is inclined inward from the part which contact | connects the upper front panel 107, and has what is called a fine structure.

 The ATM 100 has a table between the middle front panel 108 and the lower front panel 109 that is substantially parallel to the mounting surface of the ATM 100 (horizontal). Since this table can be opened and opened up at the time of maintenance work as mentioned later, it demonstrates as opening / closing part 101. FIG. Inside the opening / closing part 101, a banknote entry and exit port 105 through which a user deposits and withdraws a banknote, and a coin entry and exit port 106 through which a user deposits and withdraws a coin are provided. In addition, the display input part 102 and the biometric authentication device 103 are provided in the opening-and-closing part 101 in the upper part.

The ATM 100 includes a control unit 200 for controlling the entire ATM, a main memory unit 201 for storing information such as various data and programs, insertion / ejection operations of the card, magnetic stripe of the card, or data stored in the IC card. Card mechanism part 202 having functions such as reading and writing, image reading of card embossing part, banknote mechanism part for storing bills and authenticating them by the discriminating part, and conveying them from the storage box to the bank entrance and exit slot 105 ( 203, and the hardening mechanism part 204 which accommodates hardening and discriminates authenticity by a discriminating part, and conveys from a storage box to the hardening entry / exit bracket 106 is provided.

The display input unit 102 is configured of a touch panel or the like by giving a display such as an operation guide to a user or accepting an input from the user. The biometric authentication device 103 is a device which performs identity verification using biometric information, and has a light shielding cover 104. This light shielding cover 104 is attached to prevent the inaccurate image obtained by entering light such as sunlight or fluorescent light when the image of the finger is picked up.

The biometric authentication device 103 having the light shielding cover 104 has a high security effect when used for identity verification in the ATM 100. Next, the transaction of the biometric authentication device 103 using the ATM 100 will be described. In addition, the main part of the operation in the following description is the control unit 200.

The control unit 200 displays a transaction selection guide such as deposit, payment, balance inquiry, and deposit on the display input unit 102 and accepts the selection of the transaction from the user. Here, by pressing the "payment key" or the like of the display input unit 102, a guide for inserting the IC card is displayed on the display input unit 102 to prompt the insertion of the IC card. On the other hand, when the user inserts the IC card into the card mechanism unit 202, the control unit 200 detects it, and the card mechanism unit 202 reads information such as biometric information and account number stored in the IC card.

Next, a display for inputting the password authentication number is displayed on the display input unit 102. When the user inputs the password authentication number to the display input unit 102, the control unit 200 detects it and reads the account number and the inputted information. The password authentication number is sent to the financial institution host computer. On the other hand, the financial institution host computer receives the password authentication number sent from the ATM 100, performs a combination of the input password authentication number and the password authentication number corresponding to the previously registered account number and transfers the combination result to the ATM. To (100). The control unit 200 receives the combination result, checks whether the password authentication number is correct or not, and proceeds to the next biometric authentication process if the input password authentication number is correct. If identity verification is successful by biometric authentication, the control unit 200 of the ATM 100 performs a transaction desired by the user. That is, at the time of a payment transaction, a banknote and hardening | curing of the amount of money desired by a user is withdrawn from the banknote mechanism part 203 and the hardening mechanism part 204.

The external perspective view (FIG. 3) of the biometric authentication apparatus 103, and sectional drawing (FIG. 4) of the biometric authentication apparatus 103 are shown as a structure of the biometric authentication apparatus 103 used for this biometric authentication process.

As shown in FIG. 3, the biometric authentication device 103 includes a light source unit 301 composed of an LED lamp for irradiating near-infrared light to a living body, an interference filter 302 having light transmittance only for arbitrary wavelengths, and an interference filter 302. An image capturing unit 401 composed of a camera or the like arranged below and configured to capture transmitted light passing through the interference filter 302, and a light shielding cover 104 for preventing intrusion of external light when imaging the near infrared light with the image capturing unit 401. Equipped.

As shown in FIG. 4, the internal structure of the biometric authentication device 103 has an insulated base on which a plurality of light source units 301 are mounted in a line inside a pair of light source mounting units located on the left and right sides of the finger 400. Near-infrared light is irradiated by the light source unit 301 right next to the finger 400. Specifically, as shown in FIG. 3, the light source is irradiated from the first joint in the longitudinal direction of the finger 400 to the second joint. The light source unit 301 is located at the same height as the center height of the finger 400, and the irradiated near-infrared light comes out of the finger 400 while reflecting inside the finger 400. That is, there are a plurality of light source portions 301 in a line on the insulating substrate, and are arranged at equal intervals at least between the first joint and the second joint of the finger 400.

The control unit 200 picks up the light (light in the downward direction in FIG. 4) passing through the interference filter 302 out of the abdomen of the finger 400 by the imaging unit 401. The interference filter 302 diffuses the reflected light irradiated from the light source unit 301 inside the finger 400 to transmit only near infrared rays, which are arbitrary wavelengths, of the transmitted light emitted from the abdomen of the finger 400. Near-infrared is easily absorbed by hemoglobin in the blood, so the vein is dark and is brightly photographed except for the vein. Hemoglobin in the blood has a function of absorbing near-infrared rays, so blood vessels are darkened and other than light vessels. The control unit synthesizes the captured data as finger vein image data.

The vein image data of the finger 400 obtained by the left and right pairs of LED irradiation is edited to obtain a feature amount from the single vein image data. Then, the feature amount and data registered in advance are registered. The registered data is stored in the IC card owned by the user or in the financial institution host computer, and even if the control unit 200 receives such registration data and combines it with the imaging data, identity verification is performed. The result of the combination is displayed on the display input 102 of the ATM 100, which is connected to the external connection connector. In addition, when the imaging unit 401 captures the light (light in the downward direction of the drawing) that has passed through the abdomen of the finger 400 and passes through the interference filter 302, if external light such as an illumination light enters, accurate finger vein image data is obtained. Can not get As a method of preventing the problem, it is conceivable to provide the light shielding cover 104 in the biometric authentication device 103 and to install the height at a position higher than the finger 400, but there are also the following problems. In the case where the biometric authentication device 103 is provided on the opening / closing portion 101 (table) provided with the display input portion 102 (touch panel) of the ATM 100, even when the opening / closing portion 101 is lifted up for maintenance work. There exists a possibility that the 100 and the light shielding cover 104 may collide with each other, and it may damage both. There, the rear part of the light shielding cover 104 is designed to have a lower height than the front part.

In addition, the biometric authentication device 103 is divided into a lower portion provided with the image capturing unit 401 and an upper portion provided with a light source unit 301 (see FIG. 4), and the light shielding cover 104 is disposed on the upper surface of the lower portion as shown in FIG. 3. ) Is installed.

An example of the design of the light shielding cover 104 suitable for improving the efficiency of the precision maintenance work of biometric authentication will be described with reference to FIG. 5. The light shielding cover 104a and 104b are provided in the position which opposes the position which covers the finger 400 in between. Paying attention to 104a, the contact point of the light shielding cover 104 of the side which covers the finger 400 (the front side of FIG. 5), and the lower upper surface of the biometric authentication device 103 is connected to ATM 100 as shown in A, FIG. At the time of installation, the contact point of the light shielding cover 104a of the side close to the intermediate | middle front panel 108 (the inner side of FIG. 5), and the lower upper surface of the biometric authentication device 103 is set to B. In addition, let E points the point which touches the highest position with the light shielding cover 104a, and F points the point which reaches the lowest position with the light shielding cover 104a. Similarly, paying attention to 104b, the contacts of the light shielding cover 104b on the side (front side of FIG. 5) covering the finger 400 and the lower upper surface of the biometric authentication device 103 are C, as shown in FIG. When installed on the light shield cover 104b of the side close to the middle front panel 108 (i.e., the side opposite to the finger covering side, and the inner side of FIG. 5), the contact point of the lower upper surface of the biometric authentication device 103 is D ( It is in the position which is invisible in the structure of FIG. 5). In this case, AB is about 70 mm (L1 in Fig. 5), AC is about 50 mm (L2 in Fig. 5), AE is about 30 mm (Hl in Fig. 5), and BF is about 15 mm (H2 in Fig. 5). )to be. These values are calculated based on the inclination of the middle front panel 108 of the ATM 100, and are suitable values in which the ATM 100 and the light shield cover 104 do not collide with each other and cause damage to both during the maintenance work. Is set to.

In addition, although the front side of FIG. 5 of the light-shielding cover 104 is defined as "the side which covers a finger", and the inner side of FIG. 5 is "an opposite side to the side which covers a finger", the front side of FIG. The side on which it is placed "and the inner side of FIG.

6 and 7, a description will be given of the biometric authentication device 103 having the light shielding cover 104 in the ATM 100, when it is normally used (a user performs a transaction operation) and a case where a clerk repairs. . FIG. 6 is a side view of FIG. 1, and FIG. 7 is a side view when maintenance work is performed on the ATM 100 equipped with the biometric authentication device 103.

As shown in FIG. 6, the biometric authentication device 103 is installed on the opening / closing portion 101, and as illustrated in FIGS. 1 and 2, there is a recess in the middle front panel 108 of the ATM 100. The lower part of the opening-closing part 101 is the unit 600 provided with the banknote mechanism part 203 and the hardening mechanism part 204. As shown in FIG.

When a failure occurs in the unit 600, as shown in Fig. 7, the relevant person opens the opening and closing part 101, lifts it upwards, puts a hand in the unit 600, and enters maintenance work. The maintenance work refers to regular maintenance, unexpected troubleshooting, and the like, and the bill conveyance test in the unit 600 and the operation confirmation of the biometric authentication device 103 or the card mechanism 202 are performed.

The opening / closing portion 101 can be opened for several tens of degrees with respect to the contact between the middle front panel 108 and the opening / closing portion 101 as an axis. However, when the opening / closing portion 101 is opened without care, the light shielding cover 104 and the middle portion can be opened. Since the front panel 108 may collide and damage both sides, the opening angle of the opening / closing part 101 is regulated to such an extent that it does not collide. However, if the angle is made too small (the opening and closing part is not opened very much), it becomes difficult to perform the internal repair work. Therefore, the light shielding cover 104 of this embodiment has made the height of the rear part, ie, the side close to a front panel, low, and has a big feature here.

That is, the distance from the contact A of the lower surface of the light shielding cover 104 and the biometric authentication device 103 that covers the finger 400 to the point E reaching the highest position with the light shielding cover 104 ( AE is the most shielded cover 104 from the light blocking cover 104 on the side near the middle front panel 108 and the contact B on the lower upper surface of the biometric device 103 when installed in the ATM 101. Longer than the distance (BF) to the point (F) reaching the lower position.

Therefore, the effect of improving the accuracy of biometric authentication and the efficiency of maintenance work is provided by providing the light shielding cover 104 of the shape which does not damage an ATM main body even when the opening-closing part 101 for maintenance work is opened. Has

In addition, although the structure of the light-shielding cover 104 itself was demonstrated as a feature in the above-mentioned example, both the light-shielding cover 104 and the intermediate | middle front panel 108 are employ | adopted by employing elastic rubber as a material of the light-shielding cover 104. The problem of damaging it becomes difficult to occur. That is, since the light shielding cover 104 is made of rubber, it is possible to reduce the damage even if it collides.

Example 2

In Example 2, the biometric authentication apparatus 103 which provided the near-infrared cut film 801 on the light shielding cover 104 of Example 1 is demonstrated. As shown in Fig. 8 (a, b), the near-infrared light can be blocked by providing a translucent near-infrared cut film 801 on the upper and left symmetrical shielding cover 104. That is, as described above, the near-infrared light irradiated from the outside with the near-infrared light cut film 801 to image the vein of the finger using the near-infrared light can obtain a high-precision vein image. Moreover, since this near-infrared cut film 801 is made translucent and a user can see the position which covers the finger 400, it is convenient. FIG. 8A shows the biometric authentication device 103 (or the shielding cover) seen from the user's finger covering the finger, and FIG. 8B shows the biometric authentication device 103 seen from the middle front panel 108 side when installed in the ATM 100. FIG. In the front end portion of the light shielding cover 104 on the intermediate front panel 108 side, no near-infrared cut film 801 was provided (part without cut film shown). As a result, when the user covers the finger 400 by the biometric authentication device 103, there is a feeling of opening as long as the tip is open, so that the user can perform biometric authentication with confidence.

In addition, as shown in FIG. 8, the light shielding cover 104 provided in the biometric authentication device has a pair of side plates (refer to FIGS. 1, 3, etc.) spaced apart from the side of the user's finger, and the roots disposed thereon. The external light cut film 801 is integrally formed. There, the side plate may be called a side plate part and an upper part (near infrared light cut film 801).

In addition, in Example 1, although two light shielding covers 104 were used to oppose, the side near the intermediate | middle front panel 108 may be made into the form similar to the letter of U like Example 2. In addition, it is preferable that the dimension of the light shielding cover 104 was demonstrated in FIG.

In addition, the light shielding cover 104 and the near-infrared cut film 801 are set as the structure which can be attached. If there is garbage or dirt when acquiring the image of the finger 400, an accurate image cannot be obtained. Therefore, the biometric authentication device 103 can be separated and cleaned.

The material of the light shielding cover 104 is made of black polycarbonate, and the amount of light coming from the side surface including near infrared light can be reduced to almost zero. As a result, an image of biometric authentication can be obtained precisely, and an error in authentication can be minimized.

The other form of Example 2 is shown in FIG. The shape is almost the same as in Example 2, but the materials are different. The entire light shielding cover 104 is composed of a semi-transparent near infrared cut film 801. For this reason, the user can perform biometric authentication while looking at his finger 400.

Example 3

In Example 1, the light shielding cover 104 which changed the height of the front-back part so that it may not become an obstacle at the time of maintenance work was described, but as another embodiment, the light-shielding cover 104 is externally provided outside the biometric authentication device 103 only at the time of authentication. There is also a way. That is, when the biometric authentication is not performed, the light shielding cover 104 is stored in the biometric authentication device 103. In addition, when the light shielding cover 104 is large and does not completely return to the biometric authentication device 103, it may be stored in the ATM 100 as well as the biometric authentication device 103. Then, the drive unit 1002 described later drives the light shield cover 104 to the outside of the biometric authentication device 103. In such a form, the shading cover 104 eliminates the risk that both the ATM 100 and the shading cover 104 collide with the biometric authentication device 103 at the time of maintenance work, thereby causing damage to both sides of the shading cover 104. The shape can be designed freely.

9 is an enlarged view of a part of the self-mounting shading cover 104. The lower part of the light shielding cover 104 is provided with the base part 901 which has one side surface like the tooth-shaped gear. The upper part of the upper part which detects the position of the stopper 903 and the stopper 903 which the outer periphery forms the shape which protruded to one end of the tooth-shaped gearwheel 902 and the base part 901 in the biometric authentication apparatus 103 Sensor 904 and underlying lower sensor 905. When the cogwheel 902 is driven (rotated), the cogwheel 902 and the base 901 mesh with each other to move the light shielding cover 104 up and down. For example, in FIG. 9, when the gear 902 rotates clockwise, the light shield cover 104 moves downward, and when the gear 902 rotates counterclockwise, the light shield cover 104 moves upward. .

10 is a block diagram of the biometric authentication device 103 in the case where the light shielding cover 104 is automatically installed. In addition, about the structure of ATM100, the display input part 102, main memory part 201, card mechanism part 202, banknote mechanism part 203, and hardening mechanism part 204 which were demonstrated by FIG. 2 are abbreviate | omitted. The biometric authentication device 103 includes a control unit 1001 for controlling the entire biometric authentication device 103, a driving unit 1002 for driving the light shield cover 104 by rotating the gear 902, and a finger 400. A detection unit 1003, a light source unit 301, an imaging unit 401, and an I / O device 1004, which is an interface for connecting to the ATM 100, are provided. In addition, since the I / O device 1004 is connected to the I / O device 1005 on the ATM 100 side, it is also possible to cause the control unit 200 of the ATM 100 to control the driving of the light shield cover 104. .

11 shows a flowchart of authentication when the light shield cover 104 is automatically installed.

The control unit 1001 detects that an object is covered by the biometric authentication device 103 by the detection unit 1003 (S1101). After step 1101, it is checked whether the object is a living body (S1102). If it is not a living body, it is checked whether the set time has elapsed (S1103). If the set time has not elapsed, the process returns to step 1101 again. On the other hand, when the set time has elapsed, authentication is suspended (S1104).

When the object is a living body in step 1102, the light shielding cover 104 is driven upward from the storage portion 906 by the driving portion 1002 (S1105). When the light shield cover 104 recognizes that the light shield cover 104 is provided at a predetermined point using the upper sensor 903, near-infrared light is hit from the light source 301 to the finger 400 to start acquisition of finger vein image data (S1106). Then, a comparison (biometric authentication process) between the acquired image and the image registered in advance is performed (S1107). When the biometric authentication process is completed, the light shielding cover 104 is driven by the driving unit 1002 to the lower portion and stored in the storage unit 906 (S1108). This completes the authentication process when the light shield cover 104 is automatically installed.

In addition, since the setting time indicates the intention to perform biometric authentication by the input unit, it is difficult to leave the light shielding cover 104 outside the biometric authentication device 103 when there is a user who has stopped in the middle. This is the time to store automatically.

12 and 13 are cross-sectional views when A-A 'of the upper sensor explained in FIG. 9 is viewed from above. The upper sensor 904 and the lower sensor 905 have the same configuration, and detect the position of the stopper 903 with the same structure. A light emitting diode 1201 is provided on one side and a light receiving portion 1202 is provided on the other side. As long as the power supply of the biometric authentication device 103 is turned on, light is incident on the light receiving portion 1202 from the light emitting diode 1201. When the light shielding cover 104 moves to the installation place of the upper sensor 904 by the function of the driving unit 1002, the light from the light emitting diode 1201 is blocked by the stopper 903 and is not in contact with the light receiving unit.

Attention is first drawn to the function of the upper sensor 904. Since the light shielding cover 104 is accommodated in the storage portion 906 until the finger 400 is detected by the detection portion 1003, the light receiving portion 1202 receives light from the light emitting diode 1201 as shown in FIG. 12. Keep getting. When the light shielding cover 104 moves upward by the rotation of the gear 902, the stopper 903 intrudes between the light emitting diode 1201 and the light receiving portion 1202 as shown in FIG. Then, the light receiving portion 1202 does not receive light from the light emitting diode 1201. Next, attention is paid to the function of the lower sensor 905. Since the light shielding cover 104 is accommodated in the storage portion 906 until the finger 400 is detected by the detection portion 1003, the light receiving portion 1202 receives light from the light emitting diode 1201 as shown in FIG. 12. Do not receive. When the light shielding cover 104 moves upward by the rotation of the gear 902, the stopper 903 does not exist between the light emitting diode 1201 and the light receiving portion 1202 as shown in FIG. ) Continues to receive light from the light emitting diode 1201. Since the light shielding cover 104 moves downward when the biometric authentication process is completed, the stopper 903 intrudes between the light emitting diode 1201 and the light receiving unit 1202 as shown in FIG. 13, and the light receiving unit 1202 It does not receive light from light emitting diode 1201.

Thus, the control part 1001 becomes a structure which can recognize whether the light shielding cover 104 is stored in the storage part 906, or installed in the exterior.

In addition, FIG. 14 shows that the storing portion 906 of the arcuate light shield cover 104 is provided in the biometric authentication device 103, and the same configuration as that of FIG. 9 is applied to the arch shape (see FIG. 15). When performing biometric authentication, the driving unit 1002 drives the light shielding cover 104 to move the light shielding cover 104 out of the storage unit 906 to the outside of the biometric authentication device so as to cover the portion of the finger 400 from both left and right directions. Install to cover.

Therefore, the light shielding cover 104 which is automatically installed based on the finger 400 covered in this way is provided, and the ATM 100 can be opened even when the opening / closing portion 101 of the ATM 100 is opened for maintenance work. It has the effect of improving the precision of biometric authentication and the efficiency of maintenance work, without damaging a main body.

Example 4

In Example 4, other embodiment is demonstrated about the light shielding cover 104 demonstrated in Examples 1-3. In addition, the internal structure of the biometric authentication apparatus 103 shown to FIGS. 17-21 mentioned later is the same as that of Examples 1-3.

Fig. 17 is an external perspective view of the biometric authentication device 103 provided with the shielding cover 104 (refer to Fig. 8) for mounting the near infrared cut film 801. As shown, the light shielding cover 104 is attached to the biometric authentication device 103 in a stable shape without a gap. In addition, when either the biometric authentication device 103 or the light shield cover 104 is provided with a projection portion on one side and a fitting portion for inserting the projection portion on one side, when the biometric authentication device 103 and the light shield cover 104 are coupled to each other. It is possible to have a more stable configuration. The near-infrared cut film 801 shown in this example may be referred to as a ceiling as described in the second embodiment.

FIG. 18: shows sectional drawing of the biometric authentication apparatus 103 provided with the light shielding cover 104 in which the near-infrared cut film 801 was mounted. In FIG. 8 described above, the near-infrared cut film 801 (ceiling part) is disposed on the upper surface of the user's finger, that is, the position facing the imaging unit 401 of the biometric authentication device 103, but in the present example, the finger vein In order to increase the accuracy of acquiring the following, various features are described below.

Like the guide arrow 1, the near-infrared cut film 801 (ceiling part) is provided by giving a suitable circular shape. As described in the process of acquiring the finger vein of the user by the biometric authentication device 103, the pair of left and right light sources 301 are irradiated with near-infrared light to the finger 400 and imaged by the imaging unit 401. Acquire finger veins with one. At this time, the near-infrared light irradiated from the light source unit 301 is irradiated not only to the finger 400 but also to the ceiling as shown by the guide arrow 2. In order to prevent the near-infrared light reflected from such a ceiling part from entering into the picked-up image of a finger vein, the ceiling part has a rounded structure. The figure shows that the reflected light of the near-infrared light irradiated toward the near-infrared cut film 801 from the near-infrared light irradiated in various directions from the light source part 301 advances in the direction which does not interfere with the imaging by the imaging part 401 ( Dashed arrow (2)).

As shown in Fig. 20, an appropriate circular shape is preferably a circular arc having a diameter of 100 mm (the circle indicated by the dotted line in Fig. 20 is a circle having a diameter of 100 mm). If the circular shape is too large or too small, the effect of preventing the reflected light from entering the image cannot be exerted. Therefore, it is preferable to design with the circular arc of the range of 90-110 mm in diameter.

The side plate part of the light shielding cover 104 employs a structure having an inclination like the guide arrow 3. In other words, the side plate portion is configured to face from side to side with the image pickup position (finger) by the image capturing unit 401 interposed therebetween, and the opposite width spreads upward. The imaging section 401 has an angle of view as indicated by a dotted line, but since the light shielding cover 104 has the above-described configuration, the light shielding cover 104 itself can be prevented from entering the field of view of the imaging unit 401.

As shown in Fig. 20, the angle R1 formed by the side plate portion and the line extending in the vertical direction from the mounting surface of the biometric authentication device 103 (indicated by a dotted line in the drawing) is preferably about 13 degrees. This angle R1 may be about an angle of view plus 1 to 5 degrees in accordance with the angle of view of the imaging unit 401. For example, when the angle of view is 12 degrees, the angle R1 is set to 13 to 17 degrees.

Moreover, when acquiring a biological image, there is a possibility that it may cause a problem in photographing if there is dust at the imaging position, and it needs to be carefully cleaned, but there is a problem that it is difficult to clean because there is a near-infrared cut film 801. In order to solve this problem, the near-infrared cut film 801 (ceiling part) can be easily separated from the light shielding cover 104 as shown in FIG. This simplifies the work at the time of cleaning and improves the convenience.

4 and 18 and 19, the interference filter 302 is larger in Figs. In FIG. 18, 19, the imaging part 401 is shown in the low position in FIG. 4, and the interference filter 302 is enlarged so that the imaging area of the imaging part 401 may be covered. In this way, the interference filter 302 may be provided with a size change depending on the imaging area of the imaging unit 401.

In addition, as shown in FIG. 21, the light shielding cover 104 is provided with an opening at a fingertip portion. As the shape of the light shield cover 104 is the same as that of the first embodiment, the light shield cover 104 is configured such that the side (finger insertion path) that covers the finger 400 is higher than the opposite side (finger tip mounting portion). (See arrow). Furthermore, we install opening in fingertip installation part. As a result, even when the nail is used by a long person, the nail is finished even if the nail does not touch the biometric authentication device 103 or the light shielding cover 104. In addition, the angle R2 formed between the line which covers the finger 400 of the light shielding cover 104 and the peak of the opposite side, and the installation surface (shown with the dotted line in the figure) of the biometric authentication device 103 are about 15 degrees. Is good. This angle depends on the structure of the front panel of the ATM 100 to be installed, and may be appropriately changed in accordance with the digging of the front panel of the ATM 100.

By providing a light shielding cover having a shape that does not damage the ATM main body even when the ATM opening and closing portion for maintenance work is opened, it has the effect of improving the accuracy of biometric authentication and the efficiency of maintenance work.

Claims (20)

In the biometric authentication device which performs identity verification by biometric authentication using biometric information, A light source unit for irradiating light from the side to the finger An interference filter having light transparency to arbitrary wavelengths of light, An imaging unit arranged under the interference filter and picking up the transmitted light passing through the interference filter; A biometric authentication device according to claim 1, wherein the light shielding cover is blocked on the side of the finger by shielding external light from entering the imaging unit, and is higher than the opposite side. In the biometric authentication device according to claim 1, The light shielding cover includes a light shielding cover on the side opposite to the side where the finger covers the distance from the contact point between the light shielding cover on the side of the finger and the upper surface of the lower part of the biometric authentication device to the highest position with the light shielding cover. And a distance from a contact point with an upper surface of the lower part of the biometric authentication device to a point reaching the lowest position with the light shielding cover. In the biometric authentication device according to claim 1, The light-shielding cover is a biometric value, characterized in that composed of a resilient material. In the biometric authentication device according to claim 2, The light-shielding cover is a biometric value, characterized in that composed of a resilient material. In the biometric authentication device according to claim 1, And a ceiling portion provided with the light shielding cover facing the left and right with the image pickup position by the image capturing part interposed therebetween and covering the upper portion of the light shielding cover. In the biometric authentication device according to claim 2, A biometric authentication device comprising: said light shielding cover is provided opposite to right and left with an image pickup position by said image pickup section interposed therebetween, and a ceiling is provided so as to cover an upper portion of said light shielding cover. In the biometric authentication device according to claim 3, And a ceiling portion provided with the light shielding cover facing the left and right with the image pickup position by the image capturing part interposed therebetween and covering the upper portion of the light shielding cover. In the biometric authentication device according to claim 5,  And said ceiling is a near infrared cut film. In the biometric authentication device according to claim 6, And said ceiling is a near infrared cut film. In the biometric authentication device according to claim 7, And said ceiling is a near infrared cut film. In the biometric authentication device according to claim 5, And said ceiling is translucent. In the biometric authentication device according to claim 6, And said ceiling is translucent. In the biometric authentication device according to claim 7, And said ceiling is translucent. In the biometric authentication device according to claim 5, And the ceiling part has a circular shape at an appropriate angle. In the biometric authentication device according to claim 6, And the ceiling part has a circular shape at an appropriate angle. In the biometric authentication device according to claim 7, And the ceiling part has a circular shape at an appropriate angle. In the biometric authentication device according to claim 1, And the light shielding cover is provided so as to face from side to side with the image capturing position of the image capturing unit interposed therebetween, and the opposite width thereof spreads upward. In the biometric authentication device according to claim 1, A biometric authentication device, characterized in that the opening is provided on the side opposite to the side covering the finger of the light shield cover. A biometric authentication device which performs biometric authentication, comprising: a light source unit for irradiating light from a side to a finger; An interference filter having light transparency to arbitrary wavelengths of light, An imaging unit arranged under the interference filter and picking up the transmitted light passing through the interference filter; A light shielding cover for blocking external light penetrating the imaging unit and a driving unit for driving the light shielding cover; An inside of the biometric authentication apparatus, a storing portion for storing the light shielding cover, a detecting portion for detecting that a finger is covered by the imaging portion; And a control unit for controlling the light shielding cover to protrude from the storage unit to the outside of the biometric authentication device using the driving unit based on the finger being covered by the detection unit. In a cash automatic trading device that handles transactions of money, A table having a biometric authentication device having a light shielding cover for identifying a user using biometric information and blocking external light from entering the imaging unit, a display input unit for guiding display to a user or receiving input from a user; Has a front panel on top of the table, And said light shielding cover has a height closer to said front panel than a height far from said front panel.

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