Double-glazing systems with retroreflectivity properties

An insulating glazing system, comprising:

• at least two glass panes and a spacer element, wherein the at least two glass panes and the spacer element define a closed volume;
• light ray shielding device, defining:
• a plurality of transparent areas allowing passage of incident light rays with a given angle of incidence, whereas light rays having other angles of incidence are unable to pass through the plurality of transparent areas;
• and
• a plurality of non-transparent areas configured to block the passage of the incident light rays, the plurality of non-transparent areas defining a first surface and a second surface, opposite to the first surface;
• and
• a support means connected to the spacer element and operably associated with the light ray shielding device in supporting relationship thereto;
• wherein the light ray shielding device is within the closed volume,
• wherein the light ray shielding device comprises a layer having retroreflective properties,
• wherein the layer having the retroreflective properties at least partially covers one or both of the first and second surfaces of at least one of the areas of the plurality of non-transparent areas of the light ray shielding device,
• wherein the layer having the retroreflective properties comprises a paint and a plurality of microspheres, and
• wherein each microsphere of the plurality of microspheres is configured to return the incident light rays.