Planar Lens Multipoint Focusing via Segmented Acoustic Structure
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Solution Overview
Problem
Conventional focused ultrasound transducers have fixed focal lengths and can only target one region, leading to high economic costs and limited flexibility in research applications such as ultrasound therapy and imaging.
Innovation Solution
A planar lens with multiple combination lenses in the same plane, each with varying focal lengths, allowing for multipoint focusing and adjustable depths of focus, is developed, along with a manufacturing method that calculates the necessary thickness and phase for acoustic focusing using specific formulas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional focused ultrasound transducers with fixed focal length are used, then the device structure is simple, but the adaptability to different research regions is poor and economic costs are high
Solution Approach 1:
The lens is divided into multiple combination lenses (first, second, third combination lenses) with different focal lengths arranged in the same plane. Each combination lens can focus ultrasound to a different region, enabling multi-region research capabilities without requiring multiple separate transducers.
Solution Approach 2:
The planar lens integrates multiple combination lenses with different focal lengths into a single device, making it universally applicable to multiple research regions and experimental configurations. This eliminates the need to purchase different commercial transducers for different research needs.
2Adaptability or versatility
If multiple commercial focused transducers are purchased to meet different research needs, then the adaptability to different regions is improved, but the economic costs increase significantly
Solution Approach 1:
Multiple combination lenses with different focal lengths are merged into a single planar lens structure. This consolidation allows one lens to perform the function of multiple separate transducers, significantly reducing economic costs while maintaining adaptability to different research regions.
3Ease of operation
If a single focused transducer with fixed focal length is used, then the device complexity is low, but the operational flexibility for different positions is limited
Solution Approach 1:
The planar lens provides dynamic focusing capabilities by incorporating multiple combination lenses with different focal lengths. Researchers can select and activate specific combination lenses based on the required focal length and target region, enabling flexible operation across different positions and experimental conditions.
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
The planar lens enables accurate and flexible ultrasound stimulation in multiple positions, reducing operational complexity and costs while enhancing research capabilities in ultrasound therapy and imaging.
Implementation Method 1
Each combination lens includes a circular part and a plurality of concentric annular parts that are continuously arranged around the circular part. Thicknesses of adjacent annular parts in each combination lens are different, and a thickness of each annular part is related to a focal length of the respective combination lens.
Data Source
AI summary
A planar lens (100) and a manufacturing method for a planar lens (100) relate to the technical field of lenses, the planar lens (100) being a focusing lens and comprising an acoustic soft material tangible structure (110) and a cover layer (120), the acoustic soft material tangible structure (110) comprises a plurality of combination lenses (130) located in the same plane, each combination lens (130) comprises a circular part (131) and a plurality of concentric annular parts (132) which are continuously arranged around the circular part (131), the thicknesses of each two adjacent annular parts (132) in each combination lens (130) are different, and the thickness of each annular part (132) is related to the focal length of the respective combination lens (130); and the cover layer (120) covers the outer surface of the acoustic soft material tangible structure (110) to form the planar lens (100).