Hexagonal Tunable Optics for Non-Mechanical Beam Steering
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Solution Overview
Problem
Current search-and-landing light systems for aircraft rely on mechanical beam steering, which are heavy, costly, and occupy significant space, lacking non-mechanical, liquid-based solutions for simultaneous variable beam pattern and two-dimensional beam steering.
Innovation Solution
A light control system utilizing hexagonal-shaped tunable optics with polar liquids and electrodes, where the curvature and tilt angle of the liquid surface are varied by voltages applied to the electrodes, enabling non-mechanical, liquid-based beam pattern adjustment and steering.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical beam steering is used, then reliability is improved, but weight increases and device complexity increases
Solution Approach 1:
The patent replaces mechanical beam steering mechanisms with an electrowetting-based liquid crystal system. The liquid crystal layer's refractive index is modulated by electrical signals applied to transparent electrodes, enabling beam steering without moving parts. This substitution eliminates motors, gears, and mechanical linkages, significantly reducing weight while maintaining reliability through electronic control.
Solution Approach 2:
The patent changes the optical parameters of the light control system by using liquid crystal materials whose refractive index can be dynamically adjusted via electrical fields. By applying different voltages to the liquid crystal layer, the beam steering angle and focal characteristics are modified without mechanical movement. This parameter-based control achieves reliable beam steering with minimal weight.
2Reliability
If mechanical beam steering is used, then reliability is improved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical steering mechanisms with a layered optical structure consisting of liquid crystal material between transparent electrodes. This structure uses electrical fields to control light propagation, eliminating the need for motors, linkages, and mechanical assemblies. The result is a significantly simplified device architecture with fewer moving parts and lower maintenance requirements.
3Weight of moving object
If non-mechanical beam steering is implemented, then weight is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent divides the light control system into discrete functional layers: transparent electrode layers, liquid crystal material layers, and housing components. Each layer can be manufactured separately using standard techniques and then assembled through lamination or bonding processes. This segmentation enables modular manufacturing, reducing overall complexity while maintaining the weight benefits of the non-mechanical design.
Solution Approach 2:
The patent designs the tunable optic structure to serve multiple functions simultaneously: the liquid crystal layer provides both beam steering and beam pattern control, the transparent electrodes serve as both electrical contacts and optical windows, and the housing provides both structural support and electrical isolation. This multi-functionality reduces the total number of components needed, simplifying manufacturing while achieving lightweight performance.
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 system achieves efficient, compact, and cost-effective two-dimensional beam steering and pattern adjustment, suitable for both search and landing operations, reducing the weight and size of the light control system compared to traditional mechanical solutions.
Implementation Method 1
The polar liquid has a surface, and the surface has a curvature and a two-dimensional tilt angle that is variable in response to voltages supplied to each of the first, second, third, fourth, fifth, and sixth electrodes
Data Source
AI summary
A tunable optic includes a hexagonal-shaped housing, a polar liquid, a first electrode, a second electrode, a third electrode, a fourth electrode, a fifth electrode, a sixth electrode, and a grounding electrode. The hexagonal-shaped housing includes first, second, third, fourth, fifth, and sixth side walls and first and second light transmissive end walls, and the first, second, third, fourth, fifth and sixth side walls and the first and second light transmissive end walls define a hexagonal-shaped inner cavity. The polar liquid is disposed within the hexagonal-shaped inner cavity. The polar liquid has a surface, and the surface has a curvature and a two-dimensional tilt angle that is variable in response to voltages supplied to each of the first, second, third, fourth, fifth, and sixth electrodes, whereby lens characteristics and light deflection characteristics of the tunable optic are varied.