Patent ID: 7787185

Claim:
A building element (E) for use in the construction of walls, partitions, paving, closing devices, shutters or doors, comprising: at least one body ( 3 ), wherein the body is parallelepipedal, prismatic or cylindrical, limited by first ( 1 ) and second ( 2 ) parallel faces of transparent material and side walls ( 4 ), at least one optical system ( 5 ), having a focal plane, placed in a vicinity of the first face ( 1 ), and a translucent screen ( 7 ) positioned in such a way that an image of a space located in front of the optical system ( 5 ) is formed on said screen ( 7 ) and can be observed from a rear of said building element (E), wherein the first face ( 1 ) comprises a plurality of lenses, each causing formation of an image on the screen ( 7 ).