Abstract: An object of the present invention is to provide a cheap, rapid, controlled, reproducible and polyvalent method for manufacturing a light emitting device with an internal source of light capable of achieving an enhancement in extraction efficiency. The invention proposes a method for manufacturing an optical layer for a light emitting device having an internal source of light and an optical layer separating the internal source of light and an external medium of light diffusion, wherein the method comprises the use of coherent electromagnetic radiation speckle lithography, such as laser speckle lithography, to make a nano/micro texturation on at least one surface of the optical layer.

Abstract: Device for puncturing a membrane of a human or animal body so as to introduce a liquid formulation thereinto, provided with a patch (10) made of a polymeric material, includes a base surface (12) having a distal side and a proximal side, and a plurality of projections (11), each projection projecting from the distal side of the base surface to end in a tip (13) arranged for puncturing the membrane. Each projection (11) has a cavity (14) and a shell (111) enveloping the cavity at the distal side. The cavity is open towards the proximal side of the base surface. The shells (111) have substantially constant thicknesses. The projections (11) include fluid channels (150) emanating from the cavities (14), running through the shells to end at orifices (15) provided in the shells, offset from the tips (13), the fluid channels being oriented obliquely relative to the proximal-distal axis (16, 160). A method provides for manufacturing the patch.

Abstract: An object of the present invention is to provide a cheap, rapid, controlled, reproducible and polyvalent method for manufacturing a light emitting device with an internal source of light capable of achieving an enhancement in extraction efficiency. The invention proposes a method for manufacturing an optical layer for a light emitting device having an internal source of light and an optical layer separating the internal source of light and an external medium of light diffusion, wherein the method comprises the use of coherent electromagnetic radiation speckle lithography, such as laser speckle lithography, to make a nano/micro texturation on at least one surface of the optical layer.