Laminated Glass Lighting Panel Diffuser
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Solution Overview
Problem
Laminated glass lighting panels with point source LEDs often suffer from glare issues due to non-uniform light distribution and direct illumination, which can lead to discomfort and reduced visibility.
Innovation Solution
The use of a partially light diffusive plastic interlayer between two glass substrates, combined with a reflective barrier, to deflect and distribute light more evenly across the surface, reducing glare and enhancing uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If point source LEDs are used for lighting in laminated glass panels, then the lighting intensity is sufficient, but the light distribution becomes non-uniform causing glare and discomfort
Solution Approach 1:
A diffusive interlayer is introduced between the glass substrates and LED light sources to mediate light transmission. This intermediary layer scatters direct light from point sources, converting harsh direct illumination into soft, uniform diffused light while maintaining adequate lighting intensity and eliminating glare effects.
Solution Approach 2:
The optical parameters of the interlayer are specifically designed to alter light propagation characteristics. By controlling the diffusion properties and thickness of the interlayer, the light distribution pattern is transformed from concentrated point-source patterns to uniform area illumination, resolving the glare problem while preserving lighting intensity.
2Object-affected harmful factors
If a diffusive interlayer is used to scatter light, then glare is reduced and uniformity is improved, but light transmission efficiency decreases
Solution Approach 1:
The diffusion parameters of the interlayer are optimized to achieve the right balance between glare reduction and light transmission. By carefully controlling the diffusion coefficient, thickness, and material composition, sufficient light scattering is achieved to eliminate glare while minimizing energy loss and maintaining adequate light transmission efficiency.
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 solution provides improved uniformity in surface lighting and reduces glare effects by diffusing light emitted from the interlayer, creating a more even illumination pattern across the panel.
Implementation Method 1
The plastic interlayer is arranged to be at least partially light diffusive such that light emitted by the at least one light source is deflected out of the plane of the panel and through the surface of at least one of the glass substrates
Data Source
Figure 1
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AI summary
A laminated glass lighting panel has a first glass substrate (2) and a second glass substrate (4), laminated together via a plastic interlayer (3), and a light source (5) arranged to emit light into the panel along a plane of the panel. The plastic interlayer is arranged to deflect the light out of the plane of the panel and through at least one of the glass substrates to provide a diffused light output. By having the light deflected by the plastic interlayer, it can be spread or diffused more widely to reduce problems caused by m ore direct illumination from point sources.