Metalens Phase-Map Design for Faster Nanostructure Tuning
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Solution Overview
Problem
Existing metalens design methods require extensive database reconstruction and recalculations when changes occur in nanostructure dimensions or materials, leading to inefficiencies and prolonged design times.
Innovation Solution
A metalens design system that determines nanostructure widths and pitches along a search route using phase contours, generating phase maps without the need for comprehensive database recalculations, allowing rapid and accurate design adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional metalens design methods are used, then design accuracy can be achieved, but design time increases significantly due to extensive database reconstruction and recalculations
Solution Approach 1:
The patent pre-calculates and stores phase contour data for various nanostructure configurations before actual design needs arise. This preliminary preparation creates a ready-to-use database of phase contour information that can be quickly retrieved and applied during the design process, eliminating the need for time-consuming recalculations when design changes are needed.
Solution Approach 2:
The patent transforms the design approach by changing from direct physical parameter optimization to phase contour-based design. By using phase contours as intermediate parameters that represent the optical path differences, the system enables rapid design adjustments through simple parameter modifications rather than extensive recalculations, maintaining accuracy while reducing time requirements.
2Manufacturing precision
If comprehensive database recalculations are performed to accommodate design changes, then design accuracy is maintained, but design efficiency decreases
Solution Approach 1:
The system performs preliminary calculations of phase contours for a comprehensive range of nanostructure parameters and stores them in advance. When design changes are needed, pre-calculated phase contour data can be directly applied without recalculating the entire database, thus maintaining manufacturing precision while dramatically improving design efficiency.
Solution Approach 2:
The patent creates a comprehensive library of pre-calculated phase contour patterns that can be copied and applied to different design scenarios. Instead of recalculating from scratch for each design change, the system retrieves and adapts existing phase contour copies, preserving accuracy while enhancing productivity.
3Productivity
If phase contour methods are used, then design speed increases, but the complexity of the design system increases
Solution Approach 1:
The patent introduces phase contours as an intermediary element between nanostructure physical parameters and optical performance. This intermediary layer simplifies the design process by providing a direct mapping from desired optical paths to nanostructure configurations, increasing design speed while managing system complexity through structured phase contour data organization and retrieval mechanisms.
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 quick and efficient metalens design, accommodating changes in nanostructure dimensions and materials without database reconstruction, improving design efficiency and responsiveness to manufacturing variations.
Implementation Method 1
A metalens may include a nanostructure, wherein the phase of incident light varies in accordance with a width of the nanostructure, a pitch of the nanostructure, and/or the wavelength of the incident light, etc. This result arises due to an effective refractive index that varies in relation to physical properties of the nanostructure.
Data Source
AI summary
A system and method designing a metalens including nanostructures and a spacer layer between the nanostructures. The method includes; selecting a design area in relation to a width of the nanostructure and a pitch of the nanostructure, setting a search route in the design area in a direction in which a phase decreases, calculating transmittance at a reference point on the search route and change points near the reference point along the search route, determining the width of the nanostructure and the pitch of the nanostructure, generating a phase map corresponding to the width of the nanostructure and the pitch of the nanostructure, extracting an extracted width of the nanostructure and an extracted pitch of the nanostructure having a target phase from the phase map, and placing the nanostructure having the extracted width and extracted pitch in relation to the metalens corresponding to the target phase.