Laminated Illuminable Glazing for Edge Scattered Light Suppression
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing glazing assemblies with light sources and light outcoupling means often result in scattered light being perceived in the edge region of the pane, which is undesirable.
Innovation Solution
A glazing assembly comprising a first pane with a light source and a light outcoupling means, where the first pane is joined to a second pane via an intermediate layer to form a laminated pane, and an absorption means, specifically a light-impermeable thermoplastic intermediate layer, is arranged in the edge region to absorb scattered light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If light is coupled into the pane via side surface close to glass edge, then light coupling efficiency is improved and homogeneous planar illumination is achieved, but scattered light appears in the edge region of the pane
Solution Approach 1:
The patent extracts the harmful scattered light from the edge region by introducing an absorption means that selectively removes scattered light photons from the optical path, while preserving the useful transmitted light in the main pane area
Solution Approach 2:
The absorption means acts as an intermediary element between the light source and the observer, mediating the light paths by absorbing scattered light while allowing useful light to pass through, thus resolving the contradiction between illumination quality and scattered light
2Object-generated harmful factors
If absorption means is added to eliminate scattered light, then scattered light visibility is reduced, but device complexity increases
Solution Approach 1:
The absorption means is merged with the existing intermediate layer of the laminated pane structure, combining the light absorption function with the structural intermediate layer rather than adding a completely separate component
Solution Approach 2:
The intermediate layer is designed to serve multiple functions: structural bonding between panes and light absorption in the edge region, making the glazing assembly more compact and 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 effectively reduces scattered light in the edge region of the laminated pane, providing a more uniform and pleasant illumination while minimizing the visibility of scattered light.
Implementation Method 1
light from a light source is coupled into a planar light guide in the form of a pane of the glazing, using total reflection
Implementation Method 2
an absorption means for absorbing light coupled into the first pane which is arranged in the edge region
Data Source
AI summary
A glazing assembly includes a light source for generating light which can be coupled into a first pane, an edge region which extends from a pane edge of the first pane over at least 1 mm up to at most 500 mm on one of the surfaces, and to an absorption device for absorbing light which is coupled into the first pane and is arranged in the edge region, wherein the absorption device includes a light-impermeable thermoplastic intermediate layer.