Device for directing light beams, illustration device, method for producing a device and an illustration device
a technology of light beams and devices, applied in the direction of applications, lighting and heating apparatus, coatings, etc., can solve the problems of inability to produce optical prisms, in particular fresnel structures, and achieve the effect of desired optical properties
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first embodiment
[0075]FIG. 1 is a schematic perspective view of a device 100 for directing light beams 3 according to the present invention. The device 100 comprises a substrate 1, onto which a light-directing structure 101 is printed by means of an inkjet printing method. The light-directing structure 101 consists of a transparent material in the form of a light-permeable, transparent and colourless printing ink which is arranged on the substrate 1 by means of a printing head (not shown) and is then cured on the substrate 1 by irradiation of ultraviolet radiation. The substrate 1 comprises, for example, a transparent plastic sheet, a transparent plastic sheet or a sheet of glass. The transparent material is printed onto the substrate 1 in such a way that the light-directing structure 101 comprises a plurality of optical prisms 106. The optical prisms 106 each have a wedge-shaped cross-section 107. The substrate 1 has a plane of principal extension 105, the optical prisms 106, of which a total of f...
second embodiment
[0076]FIG. 2 is a schematic perspective view of an optical prism 106 of a device 100 for directing light beams 3 according to the present invention. FIG. 2 shows, by way of example, a detail of one of the optical prisms 106 illustrated in FIG. 1, the optical prism 106 being made up of a plurality of applications 102. In the present example, the applications 102 comprise individual droplets 2 of the light-permeable, transparent and colourless printing ink, which have been printed individually onto the substrate 1 by the inkjet printer. It can be seen that the droplets 2 have different radii 104. The radii 104 of the droplets 2 are greater on a broad side 110 of the wedge-shaped optical prism 106 than on a narrow side 11 of the optical prism 106, so as to achieve the desired angle 109 between the functional face 108 and the plane of principal extension 105. The individual applications 102 are arranged both side by side and one above the other, in particular so as to overlap, on the su...
third embodiment
[0077]FIG. 3 is a schematic sectional view of an optical prism 106 of a device 100 for directing light beams 3 according to the present invention. Similarly to FIG. 2, FIG. 3 shows by way of example a detail of one of the optical prisms 106 illustrated in FIG. 1, but in contrast to FIG. 2, all applications 102 have equal radii 104. In this example, the wide end 110 of the wedge-shaped optical prism 106 is formed by a plurality of superimposed droplets 2 of equal diameter 104, whereas only a single row 112 of droplets 2 is arranged in the region of the narrow end 111 (without superimposition).
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Abstract
Description
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