Voltage-Varying LC Modulator for Dynamic Metasurface Holography
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Solution Overview
Problem
Metasurfaces, once fabricated, have fixed optical characteristics, limiting their ability to dynamically control light properties for applications such as holographic image creation and secure access methods.
Innovation Solution
A light modulating device incorporating a metasurface and voltage-varied liquid crystal (LC) that modulates the polarization state of light beams, allowing for dynamic control of holographic images and secure access through a server by varying the voltage supplied to the LC.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If a metasurface is fabricated, then the optical characteristics are fixed, but the ability to dynamically control light properties is limited
Solution Approach 1:
The patent introduces voltage-varied liquid crystal layers between the metasurface and polarizing plates, enabling dynamic adjustment of light polarization states through voltage control. This allows the system to switch between different optical characteristics (e.g., blocking or transmitting holographic images) after fabrication, resolving the contradiction between fixed composition and dynamic control capability
Solution Approach 2:
The patent changes the electrical parameter (voltage) applied to the liquid crystal layer to modulate the polarization state of light. By varying the voltage, the system can dynamically control whether holographic images are blocked or transmitted, achieving adaptability while maintaining the stable fabricated metasurface structure
2Adaptability or versatility
If the polarization state of light is modulated to create holographic images, then the security and flexibility are enhanced, but the device complexity increases
Solution Approach 1:
The patent designs a system where the same metasurface device can serve multiple functions: creating holographic images for security verification, enabling secure access methods, and dynamically controlling light polarization. This multi-functionality enhances security and flexibility without requiring separate devices for each application
Solution Approach 2:
The patent introduces liquid crystal layers as an intermediary between the metasurface and polarizing plates. This intermediary component enables dynamic polarization control and holographic image modulation, achieving enhanced security and flexibility while keeping the overall device structure integrated and manageable
Data Source
AI summary
An apparatus for creating a holographic image, comprising: a first polarizing plate; a metasurface configured to create a first holographic image by modulating a polarization state of a light beam passing through the first polarizing plate; a controller configured to supply voltage to a voltage-varied liquid crystal (LC); and the voltage-varied LC configured to create a second holographic image by modulating a polarization state of the first holographic image according to the voltage and operating method thereof are provided.