Abstract: An arrangement (1) for forming into a luminaire, the arrangement (1) comprising: one or more optical cells (10) each including means for receiving, collecting and redistributing light from a respective one of one or more light sources (32), e.g. LEDs; and a configuring element (20) for accommodating the one or more optical cells (10) in a predefined relative configuration or pattern; wherein the configuring element (20) comprises a sheet or plate or film of material having one or more apertures (22) therein in the said predefined relative configuration or pattern, each aperture (22) being for receiving therein a respective one of the said cells (10).

Abstract: An optical cell (10) for forming a luminaire, the optical cell (10) comprising: (i) a light collector element (14), (ii) a cover element (15) attached to the light collector element (14), and (iii) a transmission element (16) mounted between the light collector element (14) and the cover element (15); wherein: (iv) the light collector element (14) comprises a body including: an input, e.g. an input opening, for receiving and collecting light from at least one light source, e.g. one or more LEDs (32) pre-mounted on a circuit- or wiring board (30); an output, e.g.

Abstract: A display panel (1) comprising a body of optical material, the body having at least one optical image recorded therein in an encoded manner, wherein the image is selectively reconstructable and viewable (5, 6, 7) by illuminating the panel (1) using at least one light source (3a, 3b, 3c) under selected illumination conditions, wherein the image is reconstructable and viewable (5, 6, 7) such that at least one first optical property or parameter of the reconstructed image (e.g. its geometry, position in space, colour, its dynamic appearance) is selectable in value from amongst variable values of the at least one first optical property or parameter, or whose value is actively modifiable over time, as a function of or in dependence on the value of at least one second optical property or parameter of the illumination conditions of the at least one light source (e.g.

Abstract: A luminaire including: at least one light source (2), and an optical system (10, 11, 12a, 12b) for directing and/or distributing the light (5) emitted by the source(s) (2) into a desired output light distribution pattern (7); wherein the optical system comprises one or more optical elements (10, 11, 12a, 12b), the or each said optical element (10, 11, 12a, 12b) comprising a thin foil or sheet substrate having at least one optically functional surface or surface layer thereon or on a portion thereof, and wherein: (i) at least a portion of the at least one optically functional surface or surface layer on the substrate of at least one of the one or more optical elements (10, 11, 12a, 12b) has an at least partially diffractive optical function, and/or (ii) at least a portion of the at least one of the one or more optical elements (10, 11, 12a, 12b) is shaped such that its substrate is configured so as to have a non-flat or non-planar shape in three dimensions.

Abstract: A luminaire including: at least one light source (2), and an optical system (10, 11, 12a, 12b) for directing and/or distributing the light (5) emitted by the source(s) (2) into a desired output light distribution pattern (7); wherein the optical system comprises one or more optical elements (10, 11, 12a, 12b), the or each said optical element (10, 11, 12a, 12b) comprising a thin foil or sheet substrate having at least one optically functional surface or surface layer thereon or on a portion thereof, and wherein: (i) at least a portion of the at least one optically functional surface or surface layer on the substrate of at least one of the one or more optical elements (10, 11, 12a, 12b) has an at least partially diffractive optical function, and/or (ii) at least a portion of the at least one of the one or more optical elements (10, 11, 12a, 12b) is shaped such that its substrate is configured so as to have a non-flat or non-planar shape in three dimensions.

Abstract: An optical element (1) comprises: a body (2) of radiation converting monocrystalline material, e.g. of a luminescent or scintillator material, and an extraction structure (4, 6) applied to at least one output or input surface of the body (2); wherein the extraction structure (4, 6) is constructed and configured such that radiation at an output (19) of the body (2) is directionally modified, especially in terms of energy or intensity or of directional distribution or of both, as compared with radiation at the output of the body (2) in the absence of said extraction structure (4, 6), by interaction of radiation entering and/or propagating within and/or exiting the body (2) with the said extraction structure (4, 6), e.g. such as to reduce or ameliorate the deleterious effects of TIR within the body (2).

Abstract: A method of manufacturing laminate, including at least a carrying layer (1) and a cover layer (5) each of thermoplastic material bonded together with a diffractive optical element (2) incorporated between them, the method including the steps of: providing a layer (2) having a different refractive index from that of the carrying layer (1) or the cover layer (5) and placing the layer (2) on the carrying layer (1), wherein the layer (2) is placed only in some areas of the carrying layer (1); imprinting a stamp (4) with optical diffractive relief (6) thereon into the layer (2); placing the cover layer (5) on the layer (2); and heating the resulting laminate to a temperature at which bonding of the cover layer (5) and the carrying layer (1) occurs.

Abstract: An optical element (1) comprises: a body (2) of radiation converting monocrystalline material, e.g. of a luminescent or scintillator material, and an extraction structure (4, 6) applied to at least one output and/or input surface of the body (2) of radiation converting monocrystalline material; wherein the extraction structure (4, 6) is constructed and configured such that radiation at an output (19) of the body (2) of radiation converting monocrystalline material is directionally modified, as compared with radiation at the output of the body (2) of radiation converting monocrystalline material in the absence of said extraction structure (4, 6), by interaction of radiation entering and/or propagating within and/or exiting the body (2) of radiation converting monocrystalline material with the said extraction structure (4, 6), e.g.

Abstract: A method of manufacture of products from geopolymer composite shaped in a mold which is filled by casting of geopolymer composite in form of a precursor and after its hardening the casting is taken out from the mold and the casting surface is provided with a metallic layer. Before metal-plating casting surface with absorption capacity greater than 5% is treated to make it chemically stable so that pH of a leachate from 100 g of the bulk product in 1000 g distilled water after 24 hours does not exceed 9. In order to reduce the absorption capacity of the casting surface it is penetrated with polymer substances or particles of a non-porous filler are added into the geopolymer composite in the precursor state.

Abstract: A method of making products with a functional relief surface (2) with high resolution up to 10 nm, which is copied from a template (1) or carrier of the negative relief of the surface, the so-called master. The template (1) of the relief surface (2) is provided with at least one layer of geopolymer composite, applied in a precursor state (3), in form of a liquid dispersion or grout in plastic or thixotropic condition, whose thickness is the same or greater than the depth of the template relief (1), at temperatures in the interval from the temperature corresponding to properties of the precursor (3) to the temperature corresponding to thermal decomposition of the precursor (3), and after hardening of geopolymer composite the layer or layers is/are separated from the template (1).

Abstract: A method of manufacturing laminate, comprising of at least two layers (1, 5) of thermoplastic materials with a diffractive optical element incorporated between them. In this method a layer (2) with a different refraction index from that of a carrying layer (1) and/or from that of a cover layer (5) of thermoplastic material is put on a carrying layer (1) and covered by the cover layer (5). The layer (2) with a different refraction index is placed only in some areas of the carrying layer (1). Subsequently a stamp (4) with optical diffractive relief (6) is imprinted and/or embossed into the layer (2) with a different refraction index. Then the cover layer (5) of thermoplastic material is put on the layer (2) with a different refraction index and the laminate is heated to a temperature at which bonding of the cover layer (5) and the carrying layer (1) occurs. A laminate, comprising of at least two layers (1, 5) of thermoplastic materials, with optical diffraction element incorporate between them.

Abstract: A method of making products with a functional relief surface (2) with high resolution up to 10 nm, which is copied from a template (1) or carrier of the negative relief of the surface, the so-called master. The template (1) of the relief surface (2) is provided with at least one layer of geopolymer composite, applied in a precursor state (3), in form of a liquid dispersion or grout in plastic or thixotropic condition, whose thickness is the same or greater than the depth of the template relief (1), at temperatures in the interval from the temperature corresponding to properties of the precursor (3) to the temperature corresponding to thermal decomposition of the precursor (3), and after hardening of geopolymer composite the layer or layers is/are separated from the template (1).

Abstract: A method of manufacture of products from geopolymer composite shaped in a mold which is filled by casting of geopolymer composite in form of a precursor and after its hardening the casting is taken out from the mold and the casting surface is provided with a metallic layer. Before metal-plating casting surface with absorption capacity greater than 5% is treated to make it chemically stable so that pH of a leachate from 100 g of the bulk product in 1000 g distilled water after 24 hours does not exceed 9. In order to reduce the absorption capacity of the casting surface it is penetrated with polymer substances or particles of a non-porous filler are added into the geopolymer composite in the precursor state.

Abstract: The present invention provides a method of forming a relief pattern as part of a layered structure and comprising, forming a relief pattern on the surface of a layer of the said structure and subsequently forming a protective fixing layer on at least part of the said relief pattern and serving to protect the underlying relief pattern during any subsequent processing of the said structure, and thereby also provides for a layered structure, generally comprising a substrate having a relief pattern formed on a surface of the substrate and wherein at least a portion of the said relief has been provided with a protective fixing layer serving to retain the characteristics of the relief pattern during any subsequent processing of the structure such as, for example, when forming a laminate structure with the relief pattern provided therein.

Abstract: The present invention provides for a device package comprising an element secured to a plastic body, the element having at least one opening into which material of the plastic body extends to at least assist with securing the element to the body.

Abstract: The present invention provides for a security article for anti-counterfeit (21, 31), authentication and/or tracking purposes, comprising a substrate material (25, 32) including at least one, but preferably several encoded metal holographic platelets, wherein each platelet (22, 33) carries a surface relief diffractive structure and can be authenticated by inspection of both a holo-graphic device by illumination and visual, eyeglass and magnifier inspection and which can also be authenticated by inspection under magnification of an aperture in the metal platelet carrying an authenticating code.