Floor or wall covering from ceramics, wood, plastic, natural or artificial stone, and a tile or panels used for the same

A floor or wall tile made from ceramics, natural or artificial stone or a panel from wood or plastic and having an outer, generally flat, surface and an underside and at least one recess (12) into which an illuminatable inlay (14, 48) made from a transparent material or from a diffuse reflecting fiber optic element is inserted, said inlay having an outer, generally flat, surface which is arranged generally parallel with the tile outer surface and having a side surface, an optical wave guide (30, 50, 52) connecting said inlay (14, 48) to a remote light source (60) being mounted on said side surface of the inlay (14, 48) and extending generally parallel to said outer surfaces, said underside of the tile (10) or of the panels having a groove (24) for receiving a free end of the optical wave guide (30) in said underside of the tile (10) or of the panels and opening into a side of the recess (12),

• a front section (25) of the groove (24) facing the inlay being oriented parallel to the outer surfaces so that the optical wave guide (30, 50, 52) is mounted to said side surface of the inlay (14, 48) and a rear or second section (26) of the groove (24) being arranged diagonally so that said rear section of the groove (24) opens into the underside of the tile (10) or of the panels, so that light is directed into the inlay in a direction generally parallel to a plane containing the outer surfaces of the inlay and the tile.