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Iris recognition optical imaging module for mobile terminal security identity authentication and using method thereof

A technology of optical imaging and iris recognition, which is applied in the field of optoelectronics, can solve problems such as unpredictable motion blur, unpredictable usage scenarios, and glasses reflection affecting recognition, etc.

Active Publication Date: 2014-06-18
SUZHOU SIYUAN KEAN INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The user is usually hand-held, and needs to be identified while moving, and there is a very large and unpredictable motion blur
[0004] 2. The scene of user identification is unpredictable, and the ambient light intensity can range from 0 Lux in complete darkness indoors to 100,000 Lux in direct sunlight outdoors
[0005] 3. A large proportion of users wear glasses that reflect light and affect recognition

Method used

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  • Iris recognition optical imaging module for mobile terminal security identity authentication and using method thereof
  • Iris recognition optical imaging module for mobile terminal security identity authentication and using method thereof
  • Iris recognition optical imaging module for mobile terminal security identity authentication and using method thereof

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Embodiment 1

[0102] figure 1 The overall principle of the specific embodiment 1 iris recognition optical imaging module is described, and the iris recognition optical imaging module includes the following components:

[0103] Imaging optical axis 0, left near-infrared LED illumination source 1L, right near-infrared LED illumination source 1R, left LED current driver 1L', right LED current driver 1R', imaging field of view 2, transmission protection optical window 3, Optical reflector 4, optical imaging lens 5 with fixed focal length, rear focus near-infrared optical filter 6, image imaging sensor 7, module airtight casing 8, security chip 9.

[0104] The module airtight casing 8 is used for the optical imaging system to be enclosed in the module casing as a whole.

[0105] The transmission protection optical window 3 can also be replaced by the outer surface of the mobile terminal.

[0106] Specifically:

[0107] The left near-infrared LED lighting source 1L and the right near-infrared ...

Embodiment 2

[0217] Embodiment 2, the method that the iris recognition optical imaging module of the present invention carries out security identity authentication, comprises the following steps:

[0218] 1. The security chip 9 is used to connect and obtain the digitized iris image output by the image imaging sensor 7,

[0219] 2. The security chip 9 uses an iris recognition algorithm to perform extraction of iris feature information.

[0220] Considering that the security chip 9 has insufficient computing power, some computationally expensive processes such as image preprocessing and iris positioning can be placed in the main processor to complete, and the main processor only outputs the iris positioning coordinate information after image preprocessing and returns it to the security chip 9. This process is safe, even if the positioning coordinates are intercepted, it cannot be associated with iris feature information.

[0221] 3. The security chip 9 generates the iris feature template th...

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Abstract

The invention discloses an iris recognition optical imaging module for mobile terminal security identity authentication. The module comprises near-infrared LED lighting sources (1L and 1R), an optical imaging lens (5) with a fixed focus, a back-focus near-infrared optical filter (6), an imaging sensor (7) and a security chip (9), wherein the timing sequence of a short period T of the highest radiation intensity I generated by the near-infrared LED lighting sources (1L and 1R) is equal to the timing sequence of the period of global trigger exposure of the frame pixel of the imaging sensor (7), and the half-peak radiation or divergence angle FWHM of the near-infrared LED lighting sources (1L and 1R) is larger than or equal to the imaging field angle FOV of the optical imaging lens (5). The invention further provides a method of using the iris recognition optical imaging module which is used for a mobile terminal for security identity authentication.

Description

technical field [0001] The invention relates to an iris recognition optical imaging module used for mobile terminal security identity authentication and a method for using the same, belonging to the field of optomechanical electronics. Background technique [0002] The widespread adoption of mobile terminals, including smart phones, tablet MIDs, and portable devices, is an inevitable trend in the development of information technology. At present, the most important application obstacle of mobile terminals in practical applications is the most important application obstacle, such as mobile security payment, account security login, online banking and other practical applications. Biometrics is a very effective method to solve the security identity authentication of mobile terminals. The iris recognition system is the most accurate and the most stable biometric feature, but there are still big problems when applied to mobile terminals: [0003] 1. The user is usually hand-held...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06F21/32
Inventor 沈洪泉金城
Owner SUZHOU SIYUAN KEAN INFORMATION TECH
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