INCORPORATION OF OPTICAL ELEMENT INTO INSULATED GLASS UNIT Russian patent published in 2013 - IPC E06B9/24 

FIELD: construction.

SUBSTANCE: glass unit contains at least two window glasses: The optical element has multiple perforations and a non-perforated section. The non-perforated section prevents penetration of light into a building, where the insulated glass unit is installed. Perforations have the depth/width ratio, which makes it possible for the light to pass with the specified fall angles, while the light with other fall angles is unable to pass through perforations, which provides for shadowing effect. The optical element is arranged between two window glasses with the help of an adhesive, and the adhesive is not substantially present in perforations of the optical element.

EFFECT: increased protection of a building against solar energy.

26 cl, 19 dwg