Optical fibre with multiple point lateral illumination

Details Optical fibre with multiple point lateral illumination Optical fibre with multiple point lateral illumination

G - Physics

02

B

G02B 6/00 (2006.01) C03B 37/16 (2006.01) F21V 8/00 (2006.01) G02B 6/10 (2006.01)

Patent

CA 2178654

The object of the invention is an optical fibre of cylindrical construction, providing a lateral light outflow. The optical fibre, which is adapted to convey a light flow from one of its ends, the inlet end (6), to the other end, the outlet end (8), is characterized in that it comprises, at least on a given area (2) of its outer surface, a large number of closely spaced degradations (4) of very small size in relation to the fibre diameter, each of said degradations (4) causing the outflow of conveyed light through the point so that the fibre seems globally illuminated; the surface density of the degradations (4) varies in accordance with the direction of propagation of the light flow, which is thus substantially uniformly discharged over the entire length of the fibre.

L'invention a pour objet une struc- ture de fibre optique cylindrique procu- rant une émergence latérale de la lumière. Cette fibre optique, destinée à véhiculer un flux de lumière depuis l'une (6), dite d'entrée, jusqu'à l'autre (8), dite terminale, de ses extrémités, est caractérisée en ce qu'au moins sur une certaine zone (2) de sa surface extérieure, elle comporte un grand nombre d'altérations (4) rapprochées et de très petites dimensions par rapport au diamètre de la fibre, chacune des altérations (4) provoquant une émergence ponctuelle de la lumière véhiculée et la fibre apparaissant ainsi globalement lumineuse, la densité superficielle des altérations (4) varie suivant le sens de propagation du flux lumineux, celui-ci émergeant ainsi de façon sensiblement constante sur la longueur de la fibre.

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