Encoder with a light emitted editing wheel

Details Encoder with a light emitted editing wheel Encoder with a light emitted editing wheel

G - Physics

06

F

G06F 3/03 (2006.01) G01D 5/347 (2006.01)

Patent

CA 2102540

An encoder with a light emitted editing wheel comprises an editing wheel defines a wheel body and a hole in its middle portion. The editing wheel is made from transparent material, such glass, acrylic etc. The editing wheel is mounted on a shaft member and can be actuated to rotate thereon via suitable actuating means. A plurality of light focusing means being disposed along the circumference of the editing wheel. A light receiving means is provided radially on the wheel body. The light focusing means is interconnected with the light receiving means and capable of focusing a light source transmitted from the light receiving means into a plurality of light point. A light source is disposed at a perpendicular position above the editing wheel. The light source is capable of sending a light to the light receiving means of the editing wheel. And a sensor means is disposed adjacent to the light focusing means. A pair of light detecting means are provided at the sensor means thereon. The light detecting means is capable of sending an active signal as a light point is received thereon.

Codeur à roue éditrice utilisant la lumière émise. Comprend une roue éditrice dont le corps est percé d'un trou au milieu. La roue éditrice est faite d'un matériau transparent, p. ex., verre, acrylique. Elle est montée sur un élément tige et peut y être mise en mouvement par des moyens de commande. Un certain nombre de moyens de concentration de la lumière sont disposés sur la circonférence de la roue éditrice. Un moyen photorécepteur occupe une position radiale sur le corps de la roue. Le moyen de concentration de la lumière est interconnecté avec le moyen photorécepteur et permet de concentrer en un certain nombre de points lumineux une source lumineuse transmise par le moyen photorécepteur. Une source lumineuse est disposée en position perpendiculaire au-dessus de la roue éditrice. Elle permet de transmettre une lumière au moyen photorécepteur de la roue éditrice. Un moyen capteur jouxte le moyen de concentration. Une paire de moyens photodétecteurs se trouvent sur le dessus du moyen capteur. Le moyen photodétecteur est capable de transmettre un signal actif lorsqu'il reçoit un point lumineux.

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