JP2001142606A - Portable electronic equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an inexpensive and small-sized portable electronic equipment which performs surely personal authentication, with respect to a portable terminal device. SOLUTION: This equipment is provided with the image pickup device incorporated in a portable electronic equipment main body, an external world image pickup means which pickup images of an external worked by using the image pickup device and a fingerprint image pickup means which picks up a fingerprint image by using the image pickup device, and forms an image on the image pickup device by switching an image obtained by the external world image pickup means and an image obtained by the fingerprint image pickup means.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fingerprint sensor for a portable terminal mounted on a portable terminal device having an image pickup device such as a portable telephone or a notebook personal computer.

[0002]

2. Description of the Related Art The purpose of avoiding the theft or leakage of information of portable terminal devices such as portable telephones and notebook personal computers, and the fact that the contractor is the principal when trading money or goods from the portable terminal devices through communication. For the purpose of confirming the password, a personal identification number, a password, and voice verification have been used for personal authentication. PINs and passwords are widely used besides mobile terminal devices, and are used to verify by inputting a string of numbers or symbols that are registered and stored by the user. Are easily plagiarized by others, causing numerous damages.

In addition, since a mobile phone has a function of transmitting a voice from the beginning, the voiceprint of the user is registered, and the transmitted voice is collated with the voiceprint to confirm the identity of the user. A method has also been implemented. However, voiceprints have a poor degree of separation from others, and there is a danger of accepting others who have similar voices.Also, even if the vocal cords are modulated due to a cold etc., the voiceprint will be different and rejected as others There is a possibility that it will be done.

[0004]

Since personal identification in a conventional portable terminal device uses a personal identification number and a password or voice recognition, the personal identification number and password must be changed frequently in order to avoid plagiarism. In addition, there is a problem in that voice recognition has a low discriminating ability, such as erroneous recognition and rejection of the person due to the condition of the throat even if the person is the person. The present invention has been made to solve the above-described problems, and has as its object to provide an inexpensive and small-sized portable electronic device that performs reliable personal authentication in a portable terminal device.

[0005]

According to the present invention, there is provided a portable electronic device comprising: an image pickup device incorporated in a main body of the portable electronic device;
An external image pickup unit for picking up an external world using the image pickup device; and a fingerprint image pickup unit for picking up a fingerprint image using the image pickup device, and switching between an image obtained by the external image pickup unit and an image obtained by the fingerprint image pickup unit. And forming an image on the image sensor.

In the portable electronic device according to the present invention, the fingerprint imaging means is provided on a light source for irradiating light, a reflecting mirror provided on the first flat member, and a second flat member. A flat prism having a wave-like shape whose surface is a flat surface and whose other surface has a cross-sectional shape of a triangular wave having a predetermined angle;
A first angle adjusting means for adjusting an angle between the flat member and the second flat member, and a rotatable fixing of the second flat member to a portable electronic device. A second angle adjusting means for adjusting an angle formed between the second plate-shaped member and the main body of the portable electronic device, wherein the first angle adjusting means and the second angle adjusting means are connected to the external Angle between the first plate-shaped member and the second plate-shaped member, and the second plate-shaped member and the portable electronic device so that light from the device is guided to the image pickup device via the image pickup lens system. Adjusting the angle with the device body, the light from the light source during fingerprint collation, the flat prism, the reflecting mirror,
The angle formed between the first plate-shaped member and the second plate-shaped member so as to be guided to the image pickup device via an imaging lens system, and the second plate-shaped member and the portable electronic device body And an angle formed between them is adjusted.

In the portable electronic device according to the present invention, the main body of the portable electronic device has at least one display, the external image pickup means includes an external image pickup lens system for guiding light from the outside, and the fingerprint image pickup means is provided. The finger placement surface for placing a finger and the facing surface facing the finger placement surface are smooth light transmitting surfaces,
A finger placing prism formed of a transparent body having at least one reflecting surface on a side surface, a fingerprint imaging lens system receiving light reflected from the reflecting surface, and light guided from the external world imaging lens system, a fingerprint imaging lens Deflecting means for guiding any one of the light guided from the system to the image pickup device, wherein a surface opposite to a finger placing surface of the finger placing prism is above the display, and Close to the display, and arranged at a position where the content displayed by the display can be observed from the finger placement surface side through the finger placement prism, the deflecting means, when imaging the external world, from the external imaging lens system Light is guided to the image pickup device to form an image, and at the time of fingerprint collation, a fingerprint image placed on the finger placement surface is guided to the image pickup device through the reflection surface and the fingerprint image pickup lens system to form an image. Rutotomoni and is characterized by being configured to block light from the outside world image pickup lens.

[0008] A portable electronic device according to the present invention is characterized in that a message or a pattern designating a position and a timing of placing a finger is displayed on a display of the portable electronic device body.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a diagram for explaining a portable electronic device of the present embodiment, specifically, a diagram for describing a fingerprint sensor for a portable electronic device provided in the portable electronic device. FIG. 3 is a cross-sectional view of a fingerprint sensor for a portable electronic device in a storage state, specifically, in an external imaging state. Portable electronic devices include a mobile phone and a portable PC. Here, a mobile phone will be described as an example of the mobile electronic device. FIG. 2 is a diagram for explaining the portable electronic device of the present embodiment, and specifically, is a cross-sectional view of the fingerprint sensor for the portable electronic device in a fingerprint collation state. In FIG. 1, 101a is an image sensor, 1
01b is a circuit board, and the imaging element 101a is located on the circuit board 101b, for example. The circuit board 101b obtains an image of the outside world such as a landscape of a person, obtains a fingerprint image, or compares the obtained fingerprint image with a fingerprint image for collation prepared beforehand from the signal obtained from the image sensor 101a. Then, a circuit for checking the degree of coincidence and performing fingerprint collation is incorporated on the substrate. 102 is an imaging lens system, and the imaging lens system 102 is a single lens,
Alternatively, it is a combination of a plurality of lenses and guides an image to the image sensor 101a. Imaging element 101a,
The circuit board 101b and the imaging lens system 102 are incorporated in the main body of the portable electronic device. 103 is a reflecting mirror.

Reference numeral 104 denotes a flat prism, 105 denotes a light source window, 106 denotes a light source, and 107 denotes an auxiliary lens system. 10
Reference numeral 8 denotes a fixed rotary joint as second angle adjusting means for adjusting an angle between a second plate-shaped member described later and the main body of the portable electronic device, and 109 denotes a first plate-shaped member and a second rotary joint. A bending / rotating joint as first angle adjusting means for adjusting a positional relationship between the reflecting mirror and the 103-plate prism by adjusting an angle between the reflecting member and the plate-shaped member, 110 is a slide joint, and 111 is a portable type. The housing of the electronic device body,
Reference numeral 112 denotes a holding member which is a second plate-shaped member, which is formed by, for example, resin molding. Flat prism 104
Is provided on the holding member 112 and its position is held. Reference numeral 113 denotes a finger to be identified.

The image pickup device 101a, the circuit board 101b, the image pickup lens system 102, and the auxiliary lens system 107 constitute an external image pickup means for picking up an image of an external world such as a person or a landscape. An imaging element 101a, a circuit board 101b, an imaging lens system 102,
Reflecting mirror 103, plate-shaped first member provided with reflecting mirror 103, flat prism 104, light source window 105, light source 10
6. Fixed rotary joint 108, bending rotary joint 1
Reference numerals 09 and 110 constitute a fingerprint imaging unit by the slide joint and the holding member 112.

The fixed rotary joint 108 is, for example, the housing 1
11 that joins the holding member 112 and the holding member 112 of the flat prism in a hinge shape, and adjusts the angle between the holding member 112 (second flat member) and the housing 111 (the main body of the portable electronic device). It is. The bending and rotating joint 109 is the reflecting mirror 1
03 and the holding member 112 of the flat prism 104 are hingedly connected, and the reflecting mirror 103 (or the first flat member) and the holding member 112 of the flat prism 104 are connected.
It is possible to adjust the angle formed by the second plate-shaped member. Further, as shown in the figure, the bending rotary joint 109 has a first flat plate-like member provided with the reflecting mirror 103 so as to be rotatable in the rotation direction in the cross section, and a holding member 112.
And

In order to provide the reflecting mirror 103, for example, a metal thin film is deposited on a first flat member made of resin, or a mirror made of glass or the like is attached to the first flat member. Can be realized. Although the reflecting mirror 103 is depicted as a curved mirror in the drawing, the reflecting mirror 103 may be a flat surface. What is the shape of the curved surface if the fingerprint image to be acquired is configured so that the desired image quality can be obtained. There may be.

The auxiliary lens system 107 is fixed to a first flat member provided with the reflecting mirror 103 or a holding member 112 of the flat prism 104 or, if the lens system is a single lens, the flat prism 104 May be integrally molded as a transparent resin. In the storage state of FIG. 1 (or the external imaging state), the reflecting mirror 103 and the flat prism 10
The holding member 112 of FIG.
Are held in close contact with each other. That is, the angle between the first plate-shaped member and the second plate-shaped member (holding member 112) is adjusted by the bending rotary joint 109 as the first angle adjusting means so as to be approximately 180 degrees. The angle formed between the second plate-shaped member (holding member 112) and the portable electronic device main body (housing 111) by the fixed rotary joint 108 as the second angle adjusting means is substantially zero degrees. It should be adjusted to. At this time, the auxiliary lens system 107 and the imaging lens system 102 are arranged so that the optical axes thereof coincide with each other, and a position where an external image (especially an image at a position not close to the imaging lens system 102) formed by both lens systems is clearly formed. Image sensor 101a
Is arranged. The external image is guided to the image sensor 101a via the auxiliary lens system 107 and the image pickup lens system 102.

On the other hand, in the fingerprint collation state, in other words, the first plate-like member and the second plate-like member (the holding member 11) are bent by the bending / rotating joint 109 as the first angle adjusting means.
2) is adjusted, and the second plate-shaped member (holding member 112) and the portable electronic device main body (housing 11) are fixed by a fixed rotation joint 108 as second angle adjusting means.
Adjust the angle between 1). More specifically, the flat prism 104 moves with the fixed rotary joint 108 as a fulcrum, and the reflecting mirror 103 and the flat prism 1 are moved.
When the holding member 112 of FIG. 4 is bent with respect to the bending rotary joint 109 and the slide joint 110 is arranged at a predetermined position, a fingerprint matching state as shown in FIG. 2 is obtained.

In FIG. 1, reference numeral 102 denotes a concave portion in the vicinity of the image pickup lens system 102, which is arranged so that a part of the slide joint 110 is in contact with a wall surface of the concave portion at the time of fingerprint collation. In addition, a depression is provided near the position where the slide joint 110 is to be placed, and at the time of fingerprint collation,
When the slide joint 110 is fitted in the depression, the sense of stability is improved, the obtained fingerprint image is less likely to be blurred, and the accuracy of fingerprint collation can be increased.

In the fingerprint collation state, the reflecting mirror 1
03, the flat prism 104 is pulled out of the housing 111, and the cross section of the housing 111, the reflecting mirror 103 and the flat prism 104 forms a substantially triangular prism which is substantially triangular. The shape of the triangular prism is defined in a predetermined shape by a slide joint, and illumination light from the light source 106 that has passed through the light source window 108 is reflected by the flat surface of the flat prism 104,
Further, after being reflected by the reflecting mirror 103 and passing through the imaging lens system 102, the imaging device 101a is guided to the imaging device 101a to form an image. One of the flat prisms 104 is a transparent body having a smooth surface on which a finger is placed for capturing a fingerprint image, and one is a transparent body having a wavy surface having a triangular wave cross-sectional shape, and is held so that the wavy surface is inside the triangular prism. It is attached to the member 112.

The flat prism 104 can be manufactured, for example, by cutting or molding a transparent resin. In the flat prism of the present embodiment, in the arrangement of FIG. 2 in the fingerprint collation state, one surface of the triangular wave is substantially perpendicular to the light from the light source 106 and enters the prism, and the flat surface of the flat prism 104 The angle is set so that the light beam from the light source 106 reflected by the laser beam is emitted almost perpendicularly to another surface of the triangular wave. As a result, the light from the light source 106 entering the flat prism 104 exits without being substantially refracted on the wavy surface, and travels toward the reflecting mirror 103. By using such a flat prism, it is possible to irradiate illumination light that is totally reflected on the smooth surface of the flat prism from the light source 106 through the wavy surface of the flat prism. In the collation state where the finger 113 to be collated is placed on the flat surface of the flat prism, the skin does not contact the flat prism in the concave portion of the fingerprint, and the illumination light from the light source 106 is reflected at the interface between the flat prism and air. Then, the light goes to the image sensor 101a via the reflecting mirror 103, and at the convex part of the fingerprint, the skin comes into contact with the flat prism, so that the illumination light from the light source 106 is absorbed by the skin and the amount of light reaching the image sensor 101a is attenuated. .

As a result, a fingerprint image is obtained on the image sensor 101a in which the concave portions of the fingerprint are bright and the convex portions are dark, and the degree of coincidence between the fingerprint image and a previously prepared fingerprint image (not shown) is determined. By checking, fingerprint image collation is performed.
The fingerprint image does not change depending on the physical condition of the individual,
Since the information is unique to each individual, it is possible to perform reliable individual recognition and individual authentication by comparing fingerprint images. The focal length of the imaging lens system 102 is set in order to obtain a clear fingerprint image on the imaging device 101a. For this reason, the focal length and the arrangement of the auxiliary lens system 107 are set so that the proximity of the imaging lens system 102 is compensated for and the remote external image is clearly formed on the image sensor 101a when imaging the external world. As described above, in this embodiment, the imaging device 1
01a, the image pickup lens system 102 can be shared by an external image pickup unit for picking up a fingerprint image and an external image pickup unit for picking up a fingerprint image,
2 can be used effectively, so that reliable personal identification can be performed and an inexpensive and small portable electronic device can be obtained.

In this embodiment, a fingerprint image collating means for collating a fingerprint image with a portable telephone, which is a portable electronic device, is compared with a fingerprint image obtained in advance and a fingerprint image for collation prepared internally in advance, so that the fingerprint image matches. The circuit provided in the substrate circuit 101b as an example of a circuit for checking the degree of fingerprint matching and performing fingerprint collation has been described as an example, but is not limited to this. For example, a device having a communication unit separate from a mobile phone, such as a fingerprint matching unit which is a circuit for checking the degree of matching by comparing a fingerprint image with a fingerprint image prepared internally in advance and performing fingerprint matching (for example, Computers such as servers with modems)
The fingerprint image obtained by the fingerprint imaging means of the mobile phone is transferred to the separate device using the communication means of the mobile phone, and the separate device receiving the fingerprint image is compared with the fingerprint image by the fingerprint matching means. A fingerprint collation system using a portable electronic device that performs the result and transfers the result to a mobile phone using a communication unit of a separate device may be configured (not shown).

According to this structure, the portable electronic device does not need to provide a fingerprint collating unit and a fingerprint image for collation for fingerprint collation inside, and a circuit for performing fingerprint collation is provided.
The memory for storing the fingerprint image for collation can be omitted, and the configuration of the portable electronic device can be simplified. Further, if the fingerprint images for collation are stored in a separate device such as a computer, many fingerprint images for collation can be managed collectively.

Embodiment 2 FIG. 3 and 4 are diagrams for explaining a portable electronic device according to the second embodiment, particularly a fingerprint sensor for a portable electronic device, and more specifically, a fingerprint for a portable electronic device in an external imaging state. It is a block diagram of a sensor. 5 and 6 are views for explaining a portable electronic device according to the second embodiment, particularly a fingerprint sensor for a portable electronic device, and more specifically, a fingerprint for a portable electronic device in a fingerprint collation state. It is a block diagram of a sensor.

In FIG. 1, reference numeral 201 denotes an image pickup device, 202 denotes an external image pickup lens system corresponding to the image pickup lens system, and the external image pickup lens system 202 is a single lens or a combination of a plurality of lenses. It leads the image. 203 is a fingerprint imaging mirror. Reference numeral 204 denotes a housing of the main body of the portable electronic device, and reference numeral 205 denotes a switching unit that holds the external imaging lens system 202 and the reflecting mirror 203 for fingerprint imaging and moves the reflecting mirror 203 for fingerprint imaging in a predetermined direction with respect to the housing 204. The switching unit 205 may be configured using, for example, a slider or the like.

Reference numeral 206 denotes a finger placing prism made of a transparent material such as glass or plastic. The finger placing prism 206 is exposed to the outside from the housing 204 and has a finger placing surface 206a which is a smooth light transparent surface, and a finger placing prism 206. A prism bottom surface 206b which is a smooth light transparent surface facing the surface 206a, and a reflection surface 2 on a side surface other than the finger placing surface 206a and the prism bottom surface 206b.
06c and the lens system fixed surface 2 facing the reflection surface 206c
06d.

The reflecting surface 206c is
By depositing a metal thin film on one of the side surfaces. Further, it is preferable to provide an aperture stop so that only a part of the lens system fixing surface 206d is a transmission surface,
For example, it can be realized by applying a black paint on the surface facing the reflection surface 206c, attaching a thin film of metal or resin having an opening, or the like. Although the reflection surface 206c is depicted as a curved mirror in the drawing, it may be a flat surface, and the fingerprint image to be acquired may be configured to have a desired image quality. Reference numeral 207 denotes a fingerprint imaging lens system fixedly arranged to receive light guided from the lens system fixing surface 206d. Fingerprint imaging lens system 20
Reference numeral 7 denotes a single lens or a combination of a plurality of lenses, and guides light from the finger placing prism 206 to the fingerprint imaging reflecting mirror 203. The switching unit 205 and the reflecting mirror 203 for fingerprint imaging constitute a deflecting unit that guides either the light guided from the external imaging lens system 202 or the light guided from the fingerprint imaging lens system 207 to the imaging element 201.

Reference numeral 208 denotes a display having a self-luminous function, which is disposed close to the prism bottom surface 206b and can be observed from the finger placing surface 206a through the finger placing prism. For example, a liquid crystal display with a backlight or a plasma display is provided. And an electroluminescent display. Reference numeral 113 denotes a finger to be collated placed in close contact with the finger placing surface 206a of the finger placing prism 206.

First, in the external image pickup state shown in FIG. 3 and FIG.
Reference numeral 03 denotes a position at which light guided from the external imaging lens system 202 is not blocked, and is moved to a position at which light guided from the fingerprint imaging lens system 207 is not reflected toward the image sensor 201. With this configuration, light guided from the external imaging lens system 202 is guided to the image sensor 201 to form an image. The external world imaging lens system 202 is arranged in advance at a position where the external world image is clearly formed on the image sensor 201.

On the other hand, in the fingerprint collation state shown in FIGS. 5 and 6, the switch 205 is moved to the position where the fingerprint reflecting mirror 203 is moved and the fingerprint is taken. At this time, the fingerprint imaging reflecting mirror 203 is arranged at a position where the fingerprint imaging lens system clearly forms a fingerprint image on the imaging device 201 via the fingerprint imaging reflecting mirror 203. At this time, the fingerprint imaging mirror 2
Reference numeral 03 denotes a position where light guided from the external imaging lens system 202 is blocked. The illumination light emitted from the display 208 passes through the prism bottom surface 206 b and reaches the finger placing surface 206 a via the finger placing prism 206. Here, the reference finger 11
The convex portion of the fingerprint of No. 3 is in close contact with the finger placing surface 206a, and the illumination light is scattered and reflected in the finger placing prism 206 at the portion of the finger placing surface 206a in close contact with the fingerprint convex portion. Then, part of the scattered light reaches the fingerprint imaging lens system 207 via the reflection surface 206c.

Here, the exit angle of the scattered light reaching the fingerprint imaging lens system 207 on the finger placement surface 206a is determined by the finger placement prism 2
If the reflecting surface 206c is arranged so as to be equal to or larger than the critical angle at the interface between the air-fuel ratio 06 and the air, the finger rest surface 2
The light incident on 06a does not reach the fingerprint imaging lens system 207, and only the scattered light from the portion of the finger placement surface 206a that is in close contact with the fingerprint projection reaches the fingerprint imaging lens system 207. The scattered light that has reached the fingerprint imaging lens system 207 is guided to the fingerprint imaging reflector 203 by the fingerprint imaging lens system, and is reflected by the fingerprint imaging reflector 203.
01 is formed. Thereby, the external imaging lens system 20
In addition to blocking the light guided from the finger 2, the image sensor 201 can obtain a fingerprint image in which the convex portion of the fingerprint of the finger 113 to be verified placed on the finger placing surface 206 a is bright and the concave portion is dark. By checking the degree of coincidence between the fingerprint image and a prepared fingerprint image (not shown), the fingerprint images are collated. In addition, since the output screen of the display unit 208 can be observed from the outside via the finger placing prism 206, normal information display can be performed in a state other than fingerprint collation. As described above, in this embodiment, the image sensor 201 can be shared by the external image capturing unit that captures a human body, a landscape, and the like and the fingerprint image capturing unit that captures a fingerprint image, and an expensive image sensor can be effectively used. An inexpensive and small portable electronic device can be obtained by performing reliable personal identification. Further, the finger placing prism 206 can be shared by the fingerprint imaging means and the display 206, so that the space of the device can be reduced.

Note that the display unit displays normal information in a state other than the fingerprint collation. However, as shown in FIG. 7, in the fingerprint collation state, "place your finger here" is displayed. The message may be displayed in combination with the arrow symbol indicating the position where the finger should be placed. By doing so, the user can perform fingerprint collation more smoothly, and also can capture an optimal fingerprint image, thereby increasing the precision of collation.

This is provided with a detecting means (not shown) for detecting a state in which the fingerprint imaging reflecting mirror 203 is moved by the switch 205 and arranged at a position for fingerprint imaging, and the detection is performed by the detecting means. At this time, the display device may be configured to display a message or pattern indicating the position and timing of placing the finger.

Alternatively, after an input for instructing an operation to perform fingerprint collation is performed by input means of a portable electronic device (an input button for a mobile phone, an input device such as a keyboard and a trackball for a portable PC). , A message or pattern indicating the position and timing of placing the finger may be displayed on the display.

In the figure, the message "Place your finger here" is displayed in combination with the arrow symbol indicating the position where the finger should be placed. However, the present invention is not limited to this.
Any message or symbol may be used as long as a message or symbol prompting the position and timing of placing the finger is displayed on the display screen.

Although the fingerprint imaging lens system 207 is fixedly arranged on the lens system fixing surface 206d of the finger placing prism 206, the switch 205 is provided with the fingerprint imaging lens system 2
07 may be provided to interlock with the fingerprint imaging reflecting mirror 203.
In addition, although it has been described that the display has the self-luminous function and emits the illumination light in the fingerprint imaging state, a light source that emits the illumination light may be provided. In this case, the display does not need to have the self-luminous function.

[0035]

According to the portable electronic device of the present invention, an image pickup device incorporated in the main body of the portable electronic device, an external image pickup means for picking up an external world using the image pickup device, and a fingerprint image using the image pickup device. The image pickup device is provided with a fingerprint image pickup device for picking up an image, and an image obtained by the external image pickup device and an image obtained by the fingerprint image pickup device are switched to form an image on the image pickup device. It becomes possible to share the same with the external image pickup means for picking up the fingerprint image and the fingerprint image pickup means for picking up the fingerprint image, so that the expensive image pickup device can be used effectively. Individual recognition is performed, and an inexpensive and small portable electronic device can be obtained.

According to the portable electronic device of the present invention,
The fingerprint imaging means is provided on a light source for irradiating light, a reflecting mirror provided on the first plate-shaped member, and a second plate-shaped member, one surface of which is flat and the other surface has a predetermined cross section. A flat prism having a waveform shape that becomes a triangular wave shape of an angle,
First angle adjusting means for adjusting an angle between the first plate-shaped member and the second plate-shaped member; and
A second angle adjusting means for adjusting an angle between the second flat member and the main body of the portable electronic device by rotatably fixing the flat plate member to the portable electronic device; The first angle adjusting means and the second angle adjusting means are arranged such that the first plate-shaped member and the second flat plate-shaped member are arranged such that light from the outside is guided to an image pickup device via an image pickup lens system at the time of image pickup in the outside. The angle between the member and the angle between the second plate-shaped member and the main body of the portable electronic device are adjusted, and the light from the light source is used for fingerprint matching when the flat plate prism, the reflecting mirror, and the imaging lens system are used. And the angle between the first plate-shaped member and the second plate-shaped member so as to be guided to the image pickup device via the second plate-shaped member, and the angle formed between the second plate-shaped member and the main body of the portable electronic device. Because it was configured to adjust the angle, the image sensor, The shadow lens system can be shared by the external image capturing means for capturing the human body, landscape, and the like, and the fingerprint image capturing means for capturing the fingerprint image, and the expensive image capturing element can be effectively used. By performing collation, reliable personal recognition can be performed, and a small portable electronic device can be obtained.

In the portable electronic device according to the present invention, the main body of the portable electronic device has at least one display, the external image pickup means has an external image pickup lens system for guiding light from the outside, and the fingerprint image pickup means is The finger placement surface for placing a finger and the facing surface facing the finger placement surface are smooth light transmitting surfaces,
A finger placing prism formed of a transparent body having at least one reflecting surface on a side surface, a fingerprint imaging lens system receiving light reflected from the reflecting surface, and light guided from the external world imaging lens system, a fingerprint imaging lens Deflecting means for guiding any one of the light guided from the system to the image pickup device, wherein a surface opposite to a finger placing surface of the finger placing prism is above the display, and Close to the display, and arranged at a position where the content displayed by the display can be observed from the finger placement surface side through the finger placement prism, the deflecting means, when imaging the external world, from the external imaging lens system Light is guided to the image pickup device to form an image, and at the time of fingerprint collation, a fingerprint image placed on the finger placement surface is guided to the image pickup device through the reflection surface and the fingerprint image pickup lens system to form an image. Rutotomoni, since it is configured to block light from the outside world image pickup lens, it is possible to share the finger rest prism and indicators fingerprint imaging means, space saving can be achieved.

The portable electronic device according to the present invention displays a message or a pattern indicating the position and timing of placing the finger on the display of the portable electronic device main body. The characters and patterns that indicate the position and timing of placing the finger are displayed, so that the finger to be collated can be instructed to be placed at the same position on the finger placing prism at the correct timing for each fingerprint collation. Can be collated.

[Brief description of the drawings]

FIG. 1 is a diagram illustrating a portable electronic device according to an embodiment.

FIG. 2 is a diagram illustrating a portable electronic device according to the present embodiment.

FIG. 3 is a diagram showing a portable electronic device of the present embodiment.

FIG. 4 is a diagram showing a portable electronic device of the present embodiment.

FIG. 5 is a diagram illustrating a portable electronic device according to the present embodiment.

FIG. 6 is a diagram showing a portable electronic device of the present embodiment.

FIG. 7 is a diagram showing a portable electronic device of the present embodiment.

[Explanation of symbols]

101a Image sensor 101b Circuit board 102
Imaging lens system 103 Reflecting mirror 104 Flat prism 105
Light source window 106 Light source 107 Auxiliary lens system 108
Fixed rotating joint 109 Bending rotating joint 110
Slide joint 111 Housing 112 Holding member 113
Finger to be verified 201 Image sensor 202 External imaging lens system 203
Reflector for fingerprint imaging 204 Housing 205 Switching unit 206
Finger placement prism 207 Fingerprint imaging lens system 208 Display

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04Q 7/38 H04M 11/00 302 5K023 H04L 9/32 A61B 5/10 322 5K067 H04M 1/02 G06F 15 / 64G 5K101 1/21 H04B 7/26 109R 11/00 302 H04L 9/00 673A 673D (72) Inventor Toshiro Nakajima 2-3-2 Marunouchi, Chiyoda-ku, Tokyo Mitsubishi Electric Corporation (72) Inventor Kazuhiko Sumi 2-3-2 Marunouchi, Chiyoda-ku, Tokyo F-term in Mitsubishi Electric Corporation (reference) 4C038 FF01 FF05 FG01 5B020 GG51 5B047 AA25 5B085 AE26 5J104 AA07 KA01 KA17 NA05 PA02 5K023 AA07 BB04Q06 MM05 BB04 DD52 EE02 HH11 HH24 HH36 5K101 KK12 MM04 MM06 MM07 NN06 NN25 NN40 TT02

Claims (4)

[Claims] An image pickup device incorporated in a main body of a portable electronic device, an external image pickup device for picking up an external image using the image pickup device, and a fingerprint image pickup device for picking up a fingerprint image using the image pickup device. A portable electronic device, wherein an image obtained from the fingerprint image pickup means and an image obtained from the fingerprint image pickup means are switched to form an image on the image pickup device. 2. A fingerprint imaging means comprising: a light source for irradiating light; a reflecting mirror provided on a first plate-shaped member; and a reflecting mirror provided on a second plate-shaped member. A flat prism having a waveform having a cross-sectional shape of a triangular wave having a predetermined angle, a first angle adjustment for adjusting an angle between the first flat member and the second flat member. Means, and said second
A second angle adjusting means for adjusting an angle between the second flat member and the main body of the portable electronic device by rotatably fixing the flat plate member to the portable electronic device; The first angle adjusting means and the second angle adjusting means are arranged so that light from the outside is guided to an imaging device via an imaging lens system during imaging of the outside, and the first plate-shaped member and the second angle adjustment are connected to each other.
The angle between the flat plate member and the second flat member and the main body of the portable electronic device are adjusted. At the time of fingerprint collation, the light from the light source is transmitted to the flat prism and the reflecting mirror. An angle formed between the first plate-shaped member and the second plate-shaped member so as to be guided to the image pickup device via an imaging lens system, and an angle between the second plate-shaped member and the portable electronic device. The portable electronic device according to claim 1, wherein an angle between the portable electronic device and the main body is adjusted. 3. The portable electronic device body has at least one display, the external image pickup means includes an external image pickup lens system for guiding light from the outside, and the fingerprint image pickup means includes a finger rest for placing a finger. A finger placing prism composed of a transparent body having a surface and a facing surface facing the finger placing surface is a smooth light transmitting surface, and having at least one reflecting surface on a side surface, and is reflected from the reflecting surface. A fingerprint imaging lens system that receives light, and a deflection unit that guides one of light guided from the external imaging lens system and light guided from the fingerprint imaging lens system to an imaging device, The opposite surface of the finger placement surface of the finger placement prism is above the display, the finger is close to the display, and the content displayed by the display is from the finger placement surface side through the finger placement prism. Observable Wherein the deflecting means is configured to guide light from an external image pickup lens system to the image pickup element to form an image at the time of external image pickup, and to provide an image of a fingerprint placed on the finger rest surface at the time of fingerprint collation. 2. The portable electronic apparatus according to claim 1, wherein the light is guided from the external imaging lens to the imaging device through the reflection surface and the fingerprint imaging lens system to form an image. . 4. The portable electronic device according to claim 3, wherein a message or a pattern indicating the position and timing of placing a finger is displayed on a display of the portable electronic device body.