Variable Acoustic Diffractive Device for Real-Time Hologram Correction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional acoustic holography systems face challenges in producing complex 2D or 3D acoustic holograms due to the need for large transducer arrays and the inability to dynamically control acoustic fields or correct deviations from desired patterns in real time.
Innovation Solution
The system incorporates a variable acoustic diffractive device with controllable acoustic properties, such as electrorheological fluid and microfluidic channels, and sensors for real-time feedback to adjust acoustic fields and correct deviations, allowing for the creation of arbitrary 2D or 3D holograms without large transducer arrays and without the need for new hologram plates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If large transducer arrays are used to produce complex acoustic holograms, then the complexity and precision of the hologram improve, but the device complexity and cost increase significantly
Solution Approach 1:
The patent introduces an acoustic hologram plate as an intermediary component that diffracts acoustic waves to produce the desired acoustic field. This plate serves as a mediator between the acoustic transducer and the workspace medium, enabling complex hologram formation without requiring large transducer arrays. The plate's diffractive structure encodes the holographic information, simplifying the overall system architecture while maintaining high precision.
Solution Approach 2:
The patent creates a physical copy of the desired acoustic field pattern in the form of an acoustic hologram plate. This plate is manufactured with specific diffractive structures that replicate the intended acoustic field distribution. By copying the field pattern into the plate's structure, the system achieves complex hologram formation through a single replaceable component rather than complex real-time control of multiple transducers.
2Device complexity
If fixed acoustic hologram plates are used to produce specific acoustic fields, then the device complexity is reduced, but the adaptability to produce different fields decreases
Solution Approach 1:
The patent implements a variable acoustic hologram plate that can dynamically change its diffractive properties. The plate incorporates controllable elements (such as adjustable refractive index regions or movable structures) that allow real-time modification of the acoustic field pattern. This dynamic capability enables the system to produce different holographic patterns by adjusting the plate's properties rather than physically replacing it, combining simplicity with high adaptability.
Solution Approach 2:
The patent changes physical parameters of the acoustic hologram plate to achieve different acoustic fields. By adjusting parameters such as the refractive index, thickness, or diffractive structure of the plate, the system can produce various holographic patterns. This parameter control approach allows a single plate to perform multiple functions, replacing the need for multiple fixed plates while maintaining system simplicity.
3Ease of manufacture
If conventional acoustic holography systems are used, then the basic hologram production capability is achieved, but the ability to identify and correct deviations from desired fields is lost
Solution Approach 1:
The patent incorporates a feedback mechanism where sensors detect the actual acoustic field distribution in the workspace and provide this information to a controller. The controller compares the measured field with the desired field pattern and adjusts the acoustic hologram plate's parameters accordingly to correct deviations. This closed-loop feedback system ensures high field accuracy while maintaining the simplicity of using a hologram plate rather than complex transducer arrays.
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
Enables dynamic control of acoustic fields for precise manipulation of media in a workspace, enabling the creation of complex holograms with real-time correction of deviations, thus improving the accuracy and flexibility of acoustic holography systems.
Implementation Method 1
The hologram plate is manufactured to diffract incoming acoustic waves from the acoustic transducer to produce a series of diffracted waves. These diffracted waves can interfere with one another to produce a particular acoustic field in the workspace
Implementation Method 2
These diffracted waves can interfere with one another to produce a particular acoustic field in the workspace in order to assemble the workspace medium into the desired pattern
Implementation Method 3
one or more acoustic sources configured to direct acoustic waves towards the workspace to provide acoustic fields that arrange the precursor material in a three-dimensional shape in the workspace
Data Source
AI summary
An apparatus includes a precursor dispenser for dispensing a precursor material into a workspace, one or more acoustic sources configured to direct acoustic waves towards the workspace to provide acoustic fields that arrange the precursor material in a three-dimensional shape in the workspace, one or more sensors configured to detect a distribution of the precursor material in the workspace, and an electronic controller in communication with the precursor dispenser, the one or more acoustic sources, and the one or more sensors, the electronic controller being programmed to cause the one or more acoustic sources to adjust the acoustic fields to reduce deviations in the distribution of the precursor material from the three-dimensional shape in the workspace.