Corner notched disk

G - Physics – 09 – F

Patent

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Details

G09F 9/37 (2006.01) G09F 9/305 (2006.01)

Patent

CA 2087234

A B S T R A C T Diametrically pivotal disk is electromagnetically driven to display bright (ON) or dark (OFF) sides and has an optic fibre rearward of the disk. The disk is provided with a cut out to allow emission from the fibre in the ON position of the disk and the disk is shaped to prevent emission of light from the fibre in the OFF position of the disk.

L'invention est un disque pouvant tourner autour d'un axe constitué par l'un de ses diamètres et qui est attaqué électromagnétiquement pour afficher une face claire (MARCHE) et une face sombre (ARRET); une fibre optique est montée derrière ce disque. Une coupure est pratiquée dans ce disque pour permettre une émission de lumière par la fibre en position MARCHE du disque; celui-ci est construit de façon à empêcher toute transmission de lumière par la fibre quand il est en position ARRET.

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