Sky Projection Lighting with Smoothing Layer for Natural Daylight
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Solution Overview
Problem
Existing lighting systems fail to provide a realistic and cost-effective simulation of natural daylight, particularly in reproducing the continuous and smooth color transitions of the sky, which is challenging due to the limitations of pixel technology and the inherent variability of daylight.
Innovation Solution
A lighting system comprising multiple light sources arranged to emit defined radiation spectra, with a smoothing layer and a controller that uses numerical simulation to optimize light intensity and direction, creating a natural sky or other view with continuous color transitions, mimicking the spectral model of daylight through separate color areas and beam shaping optics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If pixel technology is used to simulate sky views, then the simulation can be achieved, but the cost and complexity increase significantly
Solution Approach 1:
The patent uses a simplified optical model that copies the essential spectral characteristics of sky light rather than attempting to reproduce the entire visual scene. This allows achieving realistic daylight simulation with much lower complexity by focusing on the key spectral features rather than pixel-by-pixel reproduction
Solution Approach 2:
The system dynamically adjusts spectral parameters of light sources to match sky light characteristics at different times of day. By changing intensity ratios and spectral composition rather than using complex pixel arrays, the system achieves smooth color transitions with simpler hardware
2Measurement precision
If multiple light sources with different spectra are used, then color representation accuracy improves, but the number of required light sources and control complexity increases
Solution Approach 1:
The patent segments the spectral output into distinct bands handled by different light source types. Rather than using many full-spectrum sources, it divides the spectral range into segments that can be efficiently produced by specific LED types, reducing the total number of sources needed
Solution Approach 2:
The system combines multiple light source types with different spectral characteristics to create a composite light output that matches sky light. This composite approach allows accurate color representation by selecting and combining sources with complementary spectral features
3Measurement precision
If numerical simulation and spectral optimization are implemented, then light quality and color accuracy improve, but the computational requirements and system complexity increase
Solution Approach 1:
The patent performs spectral optimization calculations in advance to determine the optimal intensity settings for each light source. By pre-computing the required intensity ratios based on the desired sky light spectrum, the real-time control complexity is reduced while maintaining high spectral accuracy
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 produces a high-quality, natural-looking light distribution with smooth color and intensity transitions, resembling the view of a sky or other natural environments, offering a cost-effective and realistic daylight simulation with moderate financial costs and minimal light sources.
Implementation Method 1
a plurality of light sources (4a-4i) arranged to emit light of defined radiation spectra
Implementation Method 2
A smoothing layer (3) is positioned on a first distance from the light sources and through which the light is emitted
Data Source
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AI summary
The lighting system of the invention comprises a plurality of light sources (4a – 4i) arranged to emit light of defined radiation spectra through a smoothing layer (3) positioned on a first distance from the light sources (4a – 4i). The light sources (4a – 4i) are positioned on mutual distances from each other behind the smoothing layer (3). The light emitted from the light sources (4a – 4i) have an intensity state optimized for producing a defined color representation with smooth color transitions on the smoothing layer (3). The invention is also concerned with a method of producing a light projection by assembling such a lighting system.