Variable condenser for delivery of illumination

F - Mech Eng,Light,Heat,Weapons – 21 – V

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F21V 8/00 (2006.01) F21V 5/04 (2006.01)

Patent

CA 2706397

A variable condenser for delivery of illumination, including a recursively nested circle-to-line fiber optic shape- converting cable and a focusable input lens system. At the input of the fiber optic cable, sets of individual optical fibers comprise successively smaller annuli recursively nested about a common center. At the output of the fiber optic cable, the sets of individual optical fibers comprise pairs of line segments recursively nested about the line midpoint, whereby the nesting level of the pairs of line segments has an exact or an approximate correspondence to the nesting level of the annuli. The output may be split into a plu-rality of lines, whereby the sets of individual optical fibers are distributed among the plurality of lines. The input lens system has a single adjustable focus means to vary the radius of an illumination spot incident upon the input of the fiber optic cable circle in-put.

L'invention concerne un condenseur variable de distribution d'éclairage, comprenant un câble de conversion de forme de fibre optique cercle-ligne imbriqué de manière récursive et un système de lentilles d'entrée focalisable. A l'entrée du câble de fibre optique, des ensembles de fibres optiques individuelles comprennent des espaces annulaires successivement plus petits imbriqués de manière récursive autour d'un centre commun. A la sortie du câble de fibre optique, les ensembles de fibres optiques individuelles comprennent des paires de segments de droite imbriqués de manière récursive autour du point milieu de ligne, de sorte que le niveau d'imbrication des paires de segments de droite a une correspondance exacte ou approximative avec le niveau d'imbrication des espaces annulaires. La sortie peut être divisée en une pluralité de lignes, de sorte que les ensembles de fibres optiques individuelles sont répartis parmi la pluralité de lignes. Le système de lentilles d'entrée comporte un moyen de mise au point ajustable unique pour modifier le rayon d'un point d'éclairage frappant l'entrée de l'entrée de cercle de câble de fibre optique.

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