Vascular Image Capture Device
A blood vessel image and photographing device technology, which is applied in the directions of blood vessel patterns, printing image acquisition, instruments, etc., can solve the problems of expensive lenses and image deformation, and achieve the effect of diversification of uses and improved convenience.
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Embodiment 1
[0039] In this embodiment, an example of a finger vein authentication device having means for measuring the contour position of a finger will be described. figure 1 (a) is a configuration diagram of the authentication system according to the first embodiment of the present invention. figure 1 (b) is a diagram showing the inside of the memory 12 and the storage device 14 in the authentication system.
[0040] The authentication system includes a finger vein data acquisition device 2 for acquiring images required for personal authentication, an image input unit 18, an authentication processing unit 10, a storage device 14, a display unit 17, an information input unit 19, a sound output unit 6, and a power supply unit 15 .
[0041] On the surface of the frame of the finger vein data acquisition device 2 is formed a finger indication area 7 for showing a finger used to acquire blood vessel images. , an imaging device 4, and a finger mounting table 5 for showing fingers.
[0042...
Embodiment 2
[0108] In the first embodiment, the method of correcting the left-right positional deviation of the user's finger when the finger is shown on the finger rest 5 was described. An example of a modified finger vein authentication system will be described.
[0109] Figure 8 It is an example of a configuration diagram showing the vein data acquisition device 2 in the second embodiment. about endowed with figure 1 finger vein authentication system and figure 2 Among the vein data acquisition device 2 that has been described Figure 1 to Figure 7 The descriptions of components with the same reference numerals and components having the same functions are omitted.
[0110] Figure 8 (a) is a top view of the vein data acquisition device 2, Figure 8 (b) is a plan view of the device 2 and the finger 1 when the finger 1 is shown in an ideal position and orientation, Figure 8 (c) is a plan view of the device 2 and the finger 1 when the finger is placed in a rotated state.
[011...
Embodiment 3
[0116] In this embodiment, an example of a finger vein authentication system that more accurately measures the presentation position of a finger will be described. Figure 10 It is an example of a configuration diagram showing the vein data acquisition device 2 in this embodiment.
[0117] about endowed with figure 1 finger vein authentication system and figure 2 Among the vein data acquisition device 2 that has been described Figure 1 to Figure 7 The descriptions of components with the same reference numerals and components having the same functions are omitted.
[0118] In order to increase the resolution of the finger position measurement, it is preferable to reduce the distance between adjacent light sources when arranging the finger position measurement light source units 60 . However, when the light sources are arranged in a row, they cannot be arranged closer than the size of the light sources themselves. So if Figure 10 In that way, it is arranged in upper and ...
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