Metasurface Light-Emitting Array for Flexible Structured Light
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Solution Overview
Problem
The light wave control ability of metasurfaces in laser optical elements is typically fixed, leading to uniform laser optical characteristics that limit operational flexibility in real-world applications.
Innovation Solution
A light-emitting device array comprising multiple light-emitting devices with distinct beam shaping structures, each utilizing a metasurface to convert light into structured light with unique speckle patterns and spatial distributions, allowing for varied and flexible light emission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a single type of beam shaping structure with metasurface is used, then the device size can be miniaturized and laser beam shaping function is achieved, but the light wave control ability becomes fixed and operational flexibility is limited
Solution Approach 1:
The patent divides the light-emitting device into multiple independent devices (first, second, third light-emitting devices), each with its own beam shaping structure. This segmentation allows each device to have specialized metasurface geometries optimized for specific functions, thereby achieving both miniaturization and operational flexibility through modular design.
Solution Approach 2:
The patent introduces variable beam shaping structures that can dynamically adjust their optical characteristics. By incorporating tunable metasurfaces or adjustable beam shaping elements, the system can change light wave control abilities in real-time, transforming fixed functionality into dynamic adaptability while maintaining compact form factor.
2Adaptability or versatility
If multiple light-emitting devices with different beam shaping structures are used, then operational flexibility and light emission diversity are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple light-emitting devices with different beam shaping structures into a single integrated array. By merging these devices into one coordinated system with unified control, the patent achieves diverse light emission capabilities while managing complexity through systematic integration rather than separate independent systems.
Solution Approach 2:
The patent designs the light-emitting device array to serve multiple functions simultaneously - different devices within the array can perform different beam shaping tasks (e.g., beam focusing, beam expanding, beam steering) while being controlled through a unified system architecture, achieving multi-functionality without proportionally increasing 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 light-emitting device array achieves high flexibility in light emission with diverse speckle patterns and spatial distributions, enhancing image resolution and enabling scanning functions of two-dimensional laser beam arrays.
Implementation Method 1
the structure called metasurface in the semiconductor industry is applied to the laser optical system to replace the traditional diffractive optical element (DOE)
Data Source
AI summary
A light-emitting device array includes a first light-emitting device, a second light-emitting device, and a third light-emitting device. A first beam shaping structure of the first light-emitting device is configured to convert light emitted by a first light-emitting structure of first light-emitting device into first structured light. A second beam shaping structure of the second light-emitting device is configured to convert light emitted by a second light-emitting structure of second light-emitting device into second structured light. Speckle patterns and spatial distributions of the first structured light and the second structured light on a projection plane are the same. A third beam shaping structure of the third light-emitting device is configured to convert light emitted by a third light-emitting structure of third light-emitting device into third structured light.