LED Lighting Device Using Segmented Chains for Natural Light Simulation
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Solution Overview
Problem
Existing lighting devices struggle to provide a cost-effective, large-area, natural lighting effect indoors, as high-resolution pixelated LED systems are expensive and distracting, especially when directly observed, and fail to replicate the dynamic, omnidirectional lighting of natural environments.
Innovation Solution
A lighting device comprising at least three LED chains with LEDs evenly and non-symmetrically distributed across a light area, controlled by different time-varying drive signals to mimic natural lighting effects, such as shadow dynamics and ambient light, without requiring high-resolution imaging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If high-resolution pixelated LED systems are used to provide natural lighting effect, then the lighting effect quality is improved, but the cost and device complexity increase significantly
Solution Approach 1:
The lighting device is divided into multiple LED chains with relatively few addressable light nodes, rather than using a high-resolution pixelated matrix. Each LED chain can be independently controlled to create natural lighting effects through coordinated dimming and color adjustment, achieving the desired effect with lower complexity components.
Solution Approach 2:
The system controls the intensity and color parameters of LED light nodes dynamically to simulate natural lighting variations. By adjusting brightness levels and color temperatures of individual LED chains, the system recreates the temporal and spectral characteristics of natural light without requiring high spatial resolution.
2Illumination intensity
If high-resolution pixelated LED systems are used to provide natural lighting effect, then the lighting effect quality is improved, but the cost increases significantly
Solution Approach 1:
The system uses a segmented approach with fewer, coarser LED chains instead of a dense pixel matrix, reducing the total number of expensive addressable LED components required while maintaining the ability to create natural lighting effects through intelligent control.
Solution Approach 2:
The invention accepts lower spatial resolution as a trade-off, using simpler, less expensive LED components that don't require high precision addressing, thereby reducing overall system cost while achieving the functional goal of natural lighting effect.
3Measurement precision
If conventional high-resolution displays are used to display natural content, then the visual fidelity is improved, but the cognitive distraction increases
Solution Approach 1:
The system extracts only the essential temporal and spectral characteristics of natural light (brightness variations, color temperature changes) without reproducing detailed visual content. This abstraction removes the cognitive need to process specific images while retaining the beneficial physiological effects of natural lighting.
Solution Approach 2:
Instead of reproducing high-fidelity visual content, the system varies key lighting parameters such as intensity and color temperature over time to match natural light patterns, providing visual fidelity at the parameter level rather than the content level, thereby avoiding cognitive distraction.
4Adaptability or versatility
If multiple large-sized light areas are used to provide omnidirectional natural light experience, then the immersive effect is improved, but the device complexity and cost increase
Solution Approach 1:
The system combines multiple LED chains into a unified lighting device that can illuminate multiple directions. By coordinating the control of different LED chain groups, the system achieves omnidirectional lighting effects without requiring separate large-sized light area modules, reducing overall device 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 solution provides a cost-efficient, immersive natural lighting experience that feels comfortable and relaxing, similar to outdoor natural environments, without triggering cognitive image processing, even when not directly observed, by using a limited color palette and varying drive signals to simulate dynamic light properties.
Implementation Method 1
each LED chain including a plurality of LED light sources separated from each other along the LED chain
Data Source
AI summary
A lighting device comprising at least three LED chains, each LED chain including a plurality of LED light sources separated from each other along the LED chain, wherein the LED light sources of each LED chain are electrically connected to a common drive signal line, wherein the light sources of the at least three LED chains are substantially evenly and non-symmetrically distributed over a light area, and a controller configured to apply a different drive signal to each drive signal line, wherein each drive signal is time varying so as to cause a time variation of at least one property of light emitted from the LED light sources. By applying different, and dynamically changing drive signals to the three groups, lighting effects resembling those occurring in nature can be accomplished, at a fraction of the costs of a pixelated and addressable device.