Method for production of electric signs and an electric sign

G - Physics – 09 – F

Patent

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Details

G09F 13/18 (2006.01) G09F 13/06 (2006.01)

Patent

CA 2520729

A method for producing, by a laser that scans the rear side of a transparent object, figures and text that are recessed in the transparent material and that as seen from the outside (5) appear as a raised relief (1) and for which the effect of depth (d, d') depends on the amplitude of a signal superposed the input, frequency-controlled laser power by which the screen pattern is obtained. By an optimal fineness of scanning relative the material of the sign, the figures may obtain a very strong luminescence even at a very low input edge-illumination power. Furthermore, the invention relates to an edge- illuminated electric sign (L1, L2) with a figure produced by the manufacturing method according to the invention. Furthermore, the invention relates to a mounting system in the form of two interacting moulding strips (3, 4) for mounting one or more electric signs (Ll, L2) manufactured according to the invention.

L'invention concerne un procédé permettant de produire, au moyen d'un laser balayant le côté arrière d'un objet transparent, des figures et du texte qui sont encastrés dans le matériau transparent, qui vus de l'extérieur (5) apparaissent en relief (1), et pour lesquels l'effet de profondeur (d, d') dépend de l'amplitude d'un signal superposé à la puissance d'entrée du laser à fréquence commandée au moyen duquel le motif est obtenu. Grâce à une extrême finesse du balayage par rapport au matériau de l'enseigne, les figures peuvent avoir une très forte luminescence même à une puissance d'entrée d'illumination périphérique très faible. En outre, l'invention concerne une enseigne lumineuse à illumination périphérique (L1, L2) qui possède une figure produite au moyen du procédé de fabrication de cette invention. L'invention concerne encore un système d'assemblage sous forme de deux éléments de moulage (3, 4) en interaction destinés à assembler au moins une enseigne lumineuse (L1, L2) fabriquée conformément à cette invention.

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