Wearable Light-Emitting Device With Angular-Bin Control
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Solution Overview
Problem
Traditional light sources create shadows in environments and direct light into spatial zones where it is not needed, necessitating a system that optimizes illumination or irradiation for various modes.
Innovation Solution
An Angularly Varying Light Emitting Device (AVLED) system that adjusts spectral and/or flux output independently for multiple angular bins, using information from imagers to enhance efficiency and safety.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If traditional light sources are used, then light is provided to the environment, but shadows are created and light is directed into spatial zones where it is not needed
Solution Approach 1:
The light emitting device is divided into multiple independently controllable light sources, each capable of emitting light in different angular ranges. This segmentation allows precise control of light distribution across different spatial zones, enabling illumination where needed while avoiding areas where light is not required, thereby reducing shadow formation.
Solution Approach 2:
Different angular bins of the light emitting device are assigned different light flux outputs based on the specific requirements of corresponding spatial zones. This local quality approach ensures that each region receives appropriate illumination levels, optimizing visibility while minimizing unnecessary light emission and shadow creation in other areas.
2Illumination intensity
If traditional light sources are used, then light is provided to the environment, but light is directed into spatial zones where it is not needed
Solution Approach 1:
The light emitting device dynamically adjusts the light flux output of individual angular bins based on real-time environmental conditions and spatial zone requirements. This dynamic control enables the system to direct light precisely where needed and reduce or eliminate light emission to zones where it is not required, significantly improving energy efficiency and reducing waste.
Solution Approach 2:
The system uses imager data to provide feedback on the current lighting conditions and spatial zone requirements. This feedback mechanism enables automatic adjustment of light flux distribution across different angular bins, ensuring optimal light efficiency by directing illumination only to areas that require it while minimizing energy waste in already illuminated or non-critical zones.
3Loss of energy
If light flux output is adjusted independently for multiple angular bins, then illumination efficiency is improved, but device complexity increases
Solution Approach 1:
The light emitting device integrates multiple functions into a single system: it includes multiple independently controllable light sources, imager capabilities for environmental sensing, and a control system that processes imager data to automatically adjust light distribution. This multi-functionality achieves high illumination efficiency while consolidating control complexity within an integrated architecture.
Solution Approach 2:
The system employs self-service mechanisms where the imager automatically captures environmental data, the control system processes this data to determine optimal light distribution, and the light sources automatically adjust their output accordingly. This self-service approach minimizes the need for external control intervention and reduces operational complexity while maintaining high illumination efficiency.
Data Source
AI summary
A wearable light emitting device includes at least one light source having an electronically controllable light output that can increase or decrease independently within a plurality of angular bins, at least one sensor configured to capture sensor data, the at least one sensor comprises at least one of an inertial measurement unit, a position sensor, a compass, a sensor providing depth or three-dimensional environmental information, or an optical detector, and a processor configured to individually adjust a light flux output from the at least one light source in at least one angular bin of the plurality of angular bins based on a specific time or based at least in part on the sensor data.