Movable Lens Module for Dynamic Fingerprint Collection Area
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Solution Overview
Problem
Conventional fingerprint recognition systems on electronic devices are inconvenient as they require users to press their fingers on a fixed preset position, limiting the flexibility and accuracy of fingerprint collection.
Innovation Solution
An electronic device equipped with a display screen, a first lens module, a fingerprint sensor, and a driving mechanism, where the lens module can move to adjust the fingerprint information collection area, allowing for dynamic fingerprint recognition and improved flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed preset position is used for fingerprint collection, then the device structure is simple, but the ease of operation deteriorates
Solution Approach 1:
The lens module is made movable instead of fixed, allowing dynamic adjustment of the fingerprint collection area. The driving mechanism enables the lens module to move along the optical axis, adapting to different fingerprint positions and sizes, thereby improving ease of operation while maintaining reasonable device complexity through controlled mobility.
2Adaptability or versatility
If a fixed preset position is used for fingerprint collection, then the device structure is simple, but the adaptability deteriorates
Solution Approach 1:
The system transitions from a static fixed-position design to a dynamic adjustable design. The driving mechanism controls the lens module's movement along the optical axis, enabling the fingerprint collection area to be dynamically adjusted based on different usage scenarios, thereby significantly improving adaptability.
Solution Approach 2:
The fingerprint collection area parameter is made variable through the movement of the lens module. By changing the position of the lens module along the optical axis, the system can adjust the collection area size to adapt to different fingerprint sizes and positions, enhancing versatility.
3Measurement precision
If the fingerprint sensor uses a fixed collection area, then the manufacturing precision requirement is low, but the measurement precision deteriorates
Solution Approach 1:
The lens module's movable design allows the system to dynamically adjust the collection area to optimally match the fingerprint being scanned. This dynamic adjustment capability enables higher measurement precision by adapting the collection parameters to the specific fingerprint characteristics, rather than relying on a fixed one-size-fits-all approach.
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
Enhances the degree of freedom in fingerprint recognition by allowing the collection area to be adjusted, improving the accuracy and convenience of fingerprint collection, especially when the fingerprint sensor initially fails to collect information or the matching degree is low.
Implementation Method 1
The fingerprint sensor is configured to receive an optical signal transmitted through the display screen
Implementation Method 2
The first lens module is connected to the first driving mechanism. The first driving mechanism is configured to drive the first lens module to move, so as to change a fingerprint information collection area of the fingerprint sensor
Data Source
AI summary
An electronic device includes a display screen, a first lens module, a fingerprint sensor, and a first driving mechanism. The first lens module, the fingerprint sensor, and the first driving mechanism are disposed close to a non-display surface of the display screen. The fingerprint sensor is configured to receive an optical signal transmitted through the display screen and the first lens module to collect fingerprint information. The first driving mechanism is configured to drive the first lens module to move, so as to change a fingerprint information collection area of the fingerprint sensor.