Multi-Lens Fingerprint Sensing Device for High Accuracy
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Solution Overview
Problem
Current fingerprint recognition technologies face challenges in achieving high accuracy due to limitations in detecting subtle fingerprint patterns and variations.
Innovation Solution
The proposed sensing device incorporates a plurality of sensing sets with at least two lenses and a sensing unit, where the lenses are positioned between holes, and the distances between these components conform to a specific equation, allowing for improved light collection and detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a single lens and sensing unit configuration is used, then the device structure is simple, but the fingerprint recognition accuracy is insufficient
Solution Approach 1:
The sensing device is divided into multiple sensing sets, each containing multiple lenses and sensing units. This segmentation allows each sensing unit to capture light from specific fingerprint regions through dedicated lenses, improving overall recognition accuracy while maintaining manageable structural complexity through modular design
Solution Approach 2:
The patent introduces a multi-lens arrangement in the optical path, transitioning from a single-point detection to a multi-point detection system. By positioning multiple lenses at different locations and angles, the system captures fingerprint patterns from multiple dimensions, enhancing measurement precision without simply increasing detector size
2Measurement precision
If multiple lenses and sensing units are used, then fingerprint recognition accuracy improves, but the device complexity increases
Solution Approach 1:
Multiple lenses and sensing units are merged into integrated sensing sets where the optical components and detection elements are closely coupled. This merging allows the system to achieve high-resolution fingerprint capture through coordinated operation of multiple components while reducing the overall spatial footprint and structural complexity compared to separate independent systems
Solution Approach 2:
Each sensing set with multiple lenses and sensing units serves multiple functions: capturing reflected light from fingerprint ridges, detecting light from fingerprint valleys, and providing redundant detection capabilities. This multi-functionality allows the same structural configuration to improve accuracy across different fingerprint regions and lighting conditions without requiring additional dedicated components
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 configuration enhances the accuracy of fingerprint recognition by effectively capturing and processing fingerprint patterns, leading to improved identification and verification processes.
Implementation Method 1
At least one sensing set among the plurality of sensing sets includes at least two lenses and a sensing unit, and is configured to allow a detected light to pass through the at least two lenses and be collected by the sensing unit
Data Source
AI summary
A sensing device includes a plurality of sensing sets having a plurality of lenses and a plurality of sensing units. The sensing units are configured to collect reflected light which pass through the lenses. Each sensing set adopts a structure which includes one sensing unit and multiple lenses for providing fingerprint sensing with high accuracy.