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Finger vein collecting device

A finger vein and acquisition device technology, applied in instruments, character and pattern recognition, computer parts and other directions, can solve the problems of poor vein image clarity, excessive automatic exposure, no automatic exposure, etc., to reduce system costs and improve speed. and the effect of recognition accuracy and length reduction

Inactive Publication Date: 2012-07-25
深圳市熵基科技生物识别技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing finger vein collection devices are relatively large in size, and the automatic exposure of some devices will be excessive or insufficient, and some devices do not even have the function of automatic exposure, and the clarity of the vein image is relatively poor.

Method used

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Embodiment Construction

[0029] The present invention will be described below in combination with specific embodiments and with reference to the accompanying drawings.

[0030] a kind of like Figure 1~3 The shown finger vein collection device includes a housing, a CMOS sensor 2 disposed on the image receiving surface below the housing, and a backlight unit 12 disposed above the housing.

[0031] There is a finger hole in the middle of the casing, and the position opposite to the finger hole in the casing is a finger pressing surface, which is a concave groove used as a finger vein collection window, and the size of the finger vein collection window is greater than 10.0mm×25.0mm. The acquisition window is a concave groove, which is convenient for fingers to reach in and press, and presents the light for collecting finger vein image information on the image receiving surface.

[0032] A finger vein image collector including a circuit control module and an optical system is arranged in the casing.

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Abstract

The invention relates to a finger vein collecting device which comprises a shell, a CMOS (complementary metal-oxide-semiconductor) sensor and a backlight unit. The finger vein collecting device is characterized in that the middle part of the shell is provided with a finger hole, a position in the shell, which corresponds to the position of the finger hole, is provided with a finger pressing surface, and the shell is internally provided with a finger vein image collector which comprises a circuit control module and an optical system. The circuit control module comprises a main control chip, a crystal oscillation circuit, a memory unit chip, an encryption chip, a voltage-reducing integrated circuit and a data communication unit. The optical system is a lens system and comprises an infrared filter, a plane mirror and a plano-convex lens. The finger vein collecting device adopts the modular design; the optical system adopts the reasonable light source design, is shorter and can uses a low-cost non-professional lens; the circuit control module is of a small package; and the finger vein collecting device overcomes defect of large volume of the same type of finger vein collecting device, reduces the cost of the system greatly, is convenient to carry, can be used together with a computer and improves the finger vein collecting speed and identifying precision significantly.

Description

technical field [0001] The invention relates to a method or device for biometric identification using an electronic circuit, in particular to a finger vein collection device. Background technique [0002] Fingerprint recognition is based on the outer layer characteristics of human fingerprints, and it is difficult to prevent counterfeiting by related personnel forging fingerprints on the residual smooth surface, which has potential security risks. Finger veins are located under the skin of the human body and are almost unforgeable. Vein recognition, as an emerging biometric technology, has very high security, will not be lost, will not be stolen, and has no memory password burden. However, the existing finger vein collection devices are relatively large in size, and the automatic exposure of some devices may be excessive or insufficient, and some devices do not even have the function of automatic exposure, and the definition of vein images is relatively poor. Contents of t...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/20
Inventor 车全宏李治农杨辰晓
Owner 深圳市熵基科技生物识别技术有限公司
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