Diffusing coating
AssigneeSaint-Gobain Glass France
InventorsChristian Marzolin, Jean-Luc Allano
Life of this patent
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Abstract
The invention relates to the field of light boxes. It relates more specifically to a diffusing layer intended to be deposited on a substrate for making a light source homogeneous. The layer according to the invention consists of agglomerated particles in a binder and is characterized by the particles having a mean diameter of between 0.3 and 2 microns, the binder being in a proportion of between 10 and 40% by volume, the particles forming aggregates whose size is between 0.5 and 20 microns, and preferably less than 5 microns, and the layer having a contrast attenuation of greater than 40%. The invention also relates to uses for the production of flat lamps.
Claims14
Diffusing layer consisting of agglomerated particles in a binder, characterized in that the particles have a mean diameter of between 0.3 and 2 microns, in that the binder is in a proportion of between 10 and 40% by volume, in that the particles form aggregates whose size is between 0.5 and 20 microns, and preferably less than 5 microns, and in that the layer has a contrast attenuation of greater than 40%.
Dependencies are inferred from the claim text.