Meta Optical Device Phase Modulation Width Ranges
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Solution Overview
Problem
Conventional flat diffraction devices with meta-structures face limitations in achieving wide diffraction angles and efficient optical performance due to uniform nanostructure designs, which restrict their application in various optical systems.
Innovation Solution
A meta optical device with multiple phase modulation regions having different width ranges and phase gradients in a radial direction, allowing for non-uniform nanostructure arrangements that modulate incident light across a wide diffraction angle range, enabling efficient phase control and optical performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If uniform nanostructure designs are used in flat diffraction devices, then manufacturing is simplified, but diffraction angle range and optical performance are limited
Solution Approach 1:
The patent applies local quality by dividing the meta optical device into multiple phase modulation regions, where each region contains nanostructures with different width ranges tailored to specific diffraction angle requirements. This allows different parts of the device to have optimized local properties for their specific functions, achieving wide diffraction angle coverage without requiring complete redesign of the entire structure.
Solution Approach 2:
The patent segments the meta optical device into multiple phase modulation regions, each with distinct nanostructure width characteristics. This segmentation enables independent optimization of each region for specific diffraction angles while maintaining overall device functionality, resolving the contradiction between versatility and complexity.
2Adaptability or versatility
If multiple phase modulation regions with different width ranges are implemented, then wide diffraction angle range is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent changes the width parameter of nanostructures systematically across different phase modulation regions to achieve varying phase gradients and diffraction angles. By controlling this single geometric parameter, the patent achieves complex optical functionality while maintaining manufacturing feasibility through standardized fabrication processes.
3Reliability
If non-uniform nanostructure arrangements are used, then optical performance is enhanced, but device complexity increases
Solution Approach 1:
The patent implements local quality by optimizing nanostructure width in each phase modulation region according to specific optical performance requirements. This localized optimization enhances overall device reliability and efficiency while maintaining a systematic design approach that manages complexity.
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 meta optical device achieves enhanced optical performance by optimizing nanostructure widths and gradients, supporting applications such as lenses with wide fields of view and hologram pattern formation, while maintaining efficiency across a broad wavelength range.
Implementation Method 1
the plurality of phase modulation regions being configured to modulate a phase of incident light of a preset wavelength band
Implementation Method 2
A meta optical device with multiple phase modulation regions having different width ranges and phase gradients in a radial direction, allowing for non-uniform nanostructure arrangements that modulate incident light across a wide diffraction angle range
Implementation Method 3
The at least two phase modulation regions may have angles of refraction of the incident light that are different from each other
Data Source
AI summary
Provided is a meta optical device including a plurality of phase modulation regions respectively including a plurality of nanostructures that have shapes and arrangement based on a preset rule, the plurality of phase modulation regions being configured to modulate a phase of incident light of a preset wavelength band, wherein at least two phase modulation regions of the plurality of phase modulation regions have phase modulation ranges in a first direction that are same, and wherein the plurality of nanostructures included in the at least two phase modulation regions have width ranges in the first direction that are different from each other.