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Full reflection fingerprint identifier

A fingerprint identification and total reflection technology, which is applied in character and pattern recognition, instruments, computer parts, etc., can solve the problems of inconvenient loading, high price and large volume of fingerprint identification devices

Inactive Publication Date: 2007-01-24
CHUAN LIANG IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Currently used fingerprint identification devices are bulky and inconvenient to be mounted on small products, and the fingerprint identification devices are expensive, so the purpose of the present invention is to propose a device to solve this problem

Method used

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Embodiment Construction

[0018] The invention relates to a total reflection fingerprint identification device, which is designed with two concave mirrors. The concave mirrors have the effect of focusing and reflecting, thereby extending the optical path and reducing the size of the mechanism to achieve the function of fingerprint identification.

[0019] Such as figure 1 As shown, it is a structural schematic diagram of the present invention. A total reflection fingerprint identification device includes a light source 4, a body 6, a bonding body 8 and a sensor 10. The body 6 has a surface structure 11, a first reflection Area 12 and light-transmitting area 13, the surface structure 11 is a transparent material, which can be glass or light-transmitting plastic material, in order to place fingers, the light generated by the light source 4 is diffused to form uniform light, and then irradiated on the The finger placed on the surface structure 11, the junction body 8 has another second reflection area 14,...

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Abstract

The total reflection type fingerprint identifying device includes one main body, one light source, one connector and one sensor. The main body has one structural plane, one first reflecting area and one transparent area; the light beam the light source emits passes through the transparent area in the main body before irradiating the finger on the structural plane, the connector has one second reflecting area; and the sensor is set on the connector. Between the main body and the connector, one black diaphragm with opaque membrane and hole for the set light beam to pass, while filters out stray light. The fingerprint identifying device has high contrast and low noise, small size, simple making process and low cost.

Description

technical field [0001] The invention relates to a fingerprint identification device, in particular to a total reflection fingerprint identification device. Background technique [0002] Biometrics is the identification of the unique physiological characteristics of human beings. The real identity is confirmed through the identification process. After a long period of development, the development of fingerprint identification is the most mature. [0003] Traditional identification methods such as passwords and IC Cards are inconvenient to store or carry around, and are easy to be cracked or stolen. On the other hand, the feature of fingerprint identification is that it does not require the human body's own memory and does not have to be carried around. Therefore, there is no need to worry about the problem of being stolen, and because it has unique characteristics, it improves the security and reliability of identification, which is why traditional passwords and IC Cards will...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/00
Inventor 吴荣春陈志隆戴表杉林永文黄志德
Owner CHUAN LIANG IND
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