Glazing unit comprising a variable light scattering system and a pair of absorbing elements
AssigneeCardinal IG Company
InventorsPatrick Gayout, Emmanuel Mimoun
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Abstract
The invention relates to a glazing unit comprising a substrate coated with a variable light scattering system switching between a transparent state and a translucent state comprising a scattering layer able to scatter the incident light along scattering angles greater than the critical total internal reflection angle at the interface between the substrate and the air and at least one pair of elements absorbing visible light separated from one another at least by the scattering layer. The invention also relates to the use of said glazing unit as a projection or back-projection screen.
Claims12
A glazing unit comprising a variable light scattering system switching between a transparent state and a translucent state comprising a scattering layer comprising liquid crystals situated between two electrodes, said variable light scattering system being situated between two substrates carrying said electrodes, wherein:
- said scattering layer is able to scatter incident light along scattering angles greater than a critical total internal reflection angle at an interface between one of the two substrates and air, and
- the glazing unit comprises at least one pair of elements absorbing visible light separated from one another at least by the scattering layer.
Dependencies are inferred from the claim text.