Li-Fi Optical Carrier Routing With Adjustable Diffraction Elements
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Solution Overview
Problem
Current Li-Fi systems face challenges in delivering location-specific information effectively, as they rely on diffraction elements to separate and redirect optical carriers based on wavelength, which can be inefficient and limited in precision, especially when multiple audience members with different locations need to receive distinct data sets.
Innovation Solution
The system employs a network of adjustable diffraction elements, including magnetically or piezoelectrically controlled diffraction surfaces, to dynamically alter the path of optical carriers (red, green, and blue LEDs) according to the relative location of recipients, ensuring each audience member receives contextually relevant data by separating and redirecting carriers based on their specific location and movement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If diffraction elements are used to separate and redirect optical carriers based on wavelength, then location-specific information delivery is enabled, but precision and efficiency deteriorate when multiple audience members with different locations need to receive distinct data sets
Solution Approach 1:
The patent employs adjustable diffraction elements that can be dynamically reconfigured based on recipient locations. The diffraction elements are not fixed but can be adjusted in real-time to optimize the separation and redirection of optical carriers for different audience members, thereby maintaining precision while serving multiple locations.
Solution Approach 2:
The system uses a single optical carrier (e.g., white light LED) that can be separated into multiple wavelength components (red, green, blue) through diffraction elements. This allows one carrier to serve multiple functions by delivering different data sets to different locations simultaneously, improving versatility without sacrificing precision through the use of multiple specialized carriers.
2Measurement precision
If multiple optical carriers are used to deliver different data sets to different locations, then delivery precision improves, but device complexity increases
Solution Approach 1:
The patent combines multiple wavelength carriers (red, green, blue LEDs) into a single optical transmission medium. By merging these carriers and using diffraction elements to separate them at the receiver end, the system achieves precise location-specific delivery without requiring completely separate transmission paths for each carrier, thus reducing overall system complexity.
Solution Approach 2:
The diffraction elements act as intermediaries that separate the combined optical carriers into their constituent wavelengths and redirect them to appropriate recipients. This intermediary mechanism allows the system to manage multiple carriers efficiently without direct complex routing for each carrier, simplifying the overall system architecture while maintaining precision.
3Productivity
If diffraction elements dynamically adjust to match changing positions of audience members, then information delivery efficiency improves, but device complexity increases
Solution Approach 1:
The system incorporates feedback mechanisms that monitor the positions of audience members and automatically adjust the diffraction elements accordingly. This feedback loop enables the system to maintain optimal performance as recipients move, improving information delivery efficiency without requiring manual reconfiguration, while the automation manages the complexity through intelligent control algorithms.
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
This approach enables precise and efficient delivery of location-specific information to multiple recipients by dynamically adjusting the diffraction elements to match the changing positions of audience members, ensuring each receives the appropriate data set, thereby enhancing the data delivery capacity and accuracy of Li-Fi systems.
Implementation Method 1
Diffraction separates electromagnetic radiation according to wavelength. A signal including several different electromagnetic wavelengths interacts with a diffraction element, a grating or diffraction prism, and the separated components leave the diffraction element at angles dependent upon their wavelength.
Implementation Method 2
The system employs a network of adjustable diffraction elements, including magnetically or piezoelectrically controlled diffraction surfaces, to dynamically alter the path of optical carriers (red, green, and blue LEDs) according to the relative location of recipients
Data Source
AI summary
Delivering information according to a recipient's location by modulating an optical carrier according to a data set, transmitting the optical carrier in a first direction, altering the path of the carrier wave according to an optical carrier wavelength, receiving recipient location information, and altering the optical carrier wavelength or optical carrier path according to the recipient location information.