Liquid Lens Chip Driving Apparatus for High-Speed Scanning
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Solution Overview
Problem
Current liquid lens technologies in biomedical imaging struggle to enhance scan rate and image resolution due to limitations in shape change speed and recovery.
Innovation Solution
A driving apparatus and method that utilize a carrier with multiple electrode pairs to provide periodic driving signals to change and recover the shape of a liquid lens, allowing for high-speed settling and improved scan rates by alternating signals between electrode pairs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a single electrode pair is used to drive the liquid lens, then the device complexity is reduced, but the scan rate and image resolution are limited due to slow shape change and recovery
Solution Approach 1:
The liquid lens is divided into multiple regions, each controlled by a separate electrode pair. This segmentation allows different regions to be driven independently, enabling faster shape changes and recoveries that increase the scan rate without requiring a single complex electrode structure
Solution Approach 2:
The patent employs periodic driving signals alternating between different electrode pairs to control the liquid lens shape changes and recoveries. This periodic action enables rapid cycling through different lens configurations, significantly improving the scan rate while maintaining manageable device complexity through systematic control
2Measurement precision
If the liquid lens shape changes slowly, then the device complexity is reduced, but the image resolution deteriorates due to limited number of images per unit time
Solution Approach 1:
The patent applies driving signals to electrode pairs in a predetermined sequence, preparing the liquid lens shape in advance for the next imaging position. This preliminary action reduces the settling time between shape changes, allowing more images to be captured per unit time while maintaining high image resolution
Solution Approach 2:
The patent changes the driving parameters (signal frequency, amplitude, and timing) to optimize both the speed of shape change and the stability of the lens configuration. By adjusting these parameters, the system achieves fast shape transitions for high scan rates while maintaining sufficient stability for high image resolution
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 approach significantly increases the scan rate and image resolution by enabling rapid shape changes and recoveries of the liquid lens, allowing for more images to be obtained in a unit time.
Implementation Method 1
The shape of the liquid lens may be changed irregularly when the liquid lens is driven by an electrical signal
Implementation Method 2
such irregular shape changes can be used to refract light back and forth, so as to achieve image scanning
Data Source
AI summary
A liquid lens chip, a driving apparatus and a driving method thereof are provided. The driving apparatus includes a carrier and a driver. The carrier is configured to carry a liquid lens and has a plurality of electrode pairs in contact with the liquid lens. The driver provides a periodic first driving signal to a selected electrode pair of the electrode pairs during a first time period according to a scan control signal to change a shape of the liquid lens. The driver further provides a periodic second driving signal to an opposite electrode pair opposite to the selected electrode pair during a second time period to recover the shape of the liquid lens which has been changed during the first time period.