Iris Recognition Guidance Device with Mirrored Visual Feedback
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Solution Overview
Problem
Current iris recognition systems on mobile terminals lack effective human-machine interface guidance, leading to suboptimal recognition speed, rate, and user experience due to inadequate design for convenience and security.
Innovation Solution
A human-machine interface guidance/indication method for iris recognition using a mobile terminal with a visible light LED, display screen, and an iris recognition imaging module, featuring a near-infrared LED lighting source, optical filter, and optical imaging lens, which provides mirrored visual feedback and imaging feedback to align the optical axes and adjust pixel offsets and rotation angles for optimal image capture and display.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If iris recognition is implemented on mobile terminals, then security performance is improved, but user experience and convenience deteriorate due to lack of effective human-machine interface guidance
Solution Approach 1:
The patent implements real-time visual feedback mechanisms including a visible light LED that provides mirrored visual feedback and a display screen that shows imaging feedback of the captured image. This allows users to see their own reflection and the captured image in real-time, guiding them to adjust their position and orientation to achieve optimal alignment with the optical axis, thereby improving ease of operation while maintaining security performance
Solution Approach 2:
The patent introduces intermediary elements including a visible light LED that acts as a mediator between the near-infrared imaging system and the user's visual system. The LED reflects visible light to create a mirrored image that users can see, serving as an intermediary guide without interfering with the near-infrared iris capture process. This mediator enables users to understand system status and adjust their position conveniently
2Measurement precision
If optical axis alignment is optimized for direct view, then recognition rate is improved, but device complexity increases due to additional optical components and alignment mechanisms
Solution Approach 1:
The patent merges multiple functions into a single integrated optical system. The visible light LED serves both as a guidance indicator and as a component that reflects light to create the mirrored visual feedback. The display screen simultaneously shows both the mirrored visual feedback and the imaging feedback of the captured image. This merging reduces device complexity while maintaining optimal optical axis alignment for high recognition rate
Solution Approach 2:
The visible light LED performs multiple functions: it provides visible light for the user to see the mirrored feedback, it reflects light to create the visual guide, and it works in conjunction with the near-infrared LED to ensure proper lighting conditions. The display screen also serves multiple purposes by showing both guidance information and capture status. This multi-functionality reduces the need for separate components, thereby reducing device complexity while maintaining measurement precision
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution enhances recognition speed and rate by ensuring an ideal common optical axis direct view, reducing non-geometric distortions and improving user experience through natural and convenient guidance, thereby increasing the security and usability of iris recognition on mobile terminals.
Implementation Method 1
an iris recognition imaging module, the iris recognition imaging module includes an imaging sensor and a near-infrared LED lighting source
Implementation Method 2
guidance/indication of the human-machine interface are generated by a mirrored visual feedback
Implementation Method 3
a near-infrared optical filter and an optical imaging lens are arranged on the imaging sensor
Data Source
AI summary
The present disclosure provides a human-machine interface guidance/indication device for iris recognition of a mobile terminal, comprising a mobile terminal and an iris recognition imaging module; the mobile terminal comprises a visible light LED (light emitting diode) and a display screen respectively in signal connection with a processor chip; the iris recognition imaging module comprises an imaging sensor and a near-infrared LED lighting source, and a near-infrared optical filter and an optical imaging lens are arranged on the imaging sensor; the processor chip is in signal connection with the imaging sensor and the near-infrared LED lighting source respectively.