Abstract: The invention relates to a system for fastening the bridge (30) or the hinge elements (10, 20) connecting the temples (A) to the lenses (L) of eyeglasses, where the ends of the bridge (30), as well as each of the ends (12, 22) of the temple connecting hinge elements (10, 20) which is directed towards the respective lens is furnished with a respective fork-shaped structure, with at least one pair of prongs (33-34, 36-37, 13-14, 23-24) lying in the plane at right angles to the plane of the lenses and where each lens is provided with holes (61-62, 63-64) located at the points of connection with the ends of the bridge (30) and/or of the temple connecting hinge elements (10, 20). The holes are equal in number to the number of prongs on the respective fork-shaped structures and comprise, inside them, respective tubular sleeves (53, 54).

Abstract: A process for making eyeglasses frames (1), where at least one front rim (2) or a pair of sidepieces (3) of the eyeglasses frame (1) is decorated, comprises the steps of decorating a film, inserting the film into the mould (4) and injection moulding the front rim (2) and/or the sidepieces (3) with the film applied to it/them; before the step of injection moulding the front rim (2) and/or the sidepieces (3), there is a step of thermoforming and trimming the film to form and shape the film according to a profile corresponding to a wall (7) of the mould (4), in such a way that the film (5) inserted in the mould is shaped like a surface of the front rim (2) and/or of the sidepieces (3) to be formed.

Abstract: The invention relates to a system for fastening the bridge (30) or the hinge elements (10, 20) connecting the temples (A) to the lenses (L) of eyeglasses, where the ends of the bridge (30), as well as each of the ends (12, 22) of the temple connecting hinge elements (10, 20) which is directed towards the respective lens is furnished with a respective fork-shaped structure, with at least one pair of prongs (33-34, 36-37, 13-14, 23-24) lying in the plane at right angles to the plane of the lenses and where each lens is provided with holes (61-62, 63-64) located at the points of connection with the ends of the bridge (30) and/or of the temple connecting hinge elements (10, 20). The holes are equal in number to the number of prongs on the respective fork-shaped structures and comprise, inside them, respective tubular sleeves (53, 54).

Abstract: A device (1) for generating encrypted images which are only visible through a polarizing filter (5) oriented in a predetermined direction, comprises: a source (3) of digital information; an LCD screen (2) connected to said source (3) to form on its front face a matrix of chromatic filters which represents images; a polarizing layer (4) oriented in a predetermined direction and located behind a rear face of the LCD screen (2) to intercept a beam of light passing through the LCD screen (2) and oriented towards an observer of the front face.

Abstract: A multi-layer film (1), depicting a colour two-dimensional image which is only visible through a polarizing filter comprises an optically active layer (2) placed over a polarizing layer (3) and configured to form the image on its face opposite the polarizing layer (3) when said face is seen through the polarizing filter, the optically active layer (2) comprising a plurality of sheets (4) of optically active material placed over each other, at least one of which is shaped to form at least one portion of the outline of the image.

Abstract: A film (1) depicting a colour two-dimensional image which is only visible through a polarizing filter comprises an optically active layer (2) placed over a polarizing layer (3) and configured to form said image on its face opposite the polarizing layer (3) when said face is seen through the polarizing filter; the optically active layer comprises a plurality of areas (4) arranged side by side in said face to form corresponding portions of the image, each area (4) being mechanically stressed to a predetermined intensity so that the corresponding portion of the image has a predetermined colour when seen through the polarizing filter. Also described is an apparatus (6) for making the film (1).

Abstract: The spectacle frames comprise a plurality of frame elements, such as earpieces, rims, bridges and other parts, which form the structure. These elements of the structure are made of metal and their surfaces are protected by a stratiform electrochemical coating. Advantageously, the coating comprises a layer of copper, on top of which a layer of silver is preferably applied.

Abstract: The spectacle frames comprise a plurality of frame elements, such as earpieces, rims, bridges and other parts, which form the structure. These elements of the structure are made of metal and their surfaces are protected by a stratiform electrochemical coating. Advantageously, the coating comprises a layer of copper, on top of which a layer of silver is preferably applied.