Self-illuminating touch activated optical switch

H - Electricity – 03 – K

Patent

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Details

H03K 17/96 (2006.01) G02B 6/35 (2006.01)

Patent

CA 2192927

The present invention teaches a touch activated switch. The switch comprises a light source for generating a light ray. Further, the switch comprises a first lens for collimating the fight source's light ray. The first lens, as a result, generates a collimated light ray in a first direction. In a second direction, the first lens forms a first and a second focal point, such that the fight source is positioned at the first focal point. Moreover, the switch comprises a second lens for converging the collimated light ray to a surface. This surface scatters the collimated light ray in the direction of fire first lens when the surface is substantially touched. The switch also comprises a detector for detecting the collimated fight ray which has been scattered by touching the surface, with the detector being positioned at the second focal point, such that the switch is activated in response to touching the surface.

L'invention a trait à un interrupteur à effleurement. L'interrupteur comporte une source de lumière destinée à générer un rayon de lumière. De plus, l'interrupteur comprend une première lentille destinée à collimater le rayon de lumière de la source de lumière. En réponse, la première lentille génère un rayon de lumière collimaté dans une première direction. Dans une seconde direction, la première lentille forme un premier foyer et un second foyer, de sorte que la source de lumière est positionnée au premier foyer. L'interrupteur comprend également une seconde lentille destinée à faire converger le rayon de lumière collimaté sur une surface. Cette surface diffuse le rayon de lumière collimaté dans une direction de la première lentille lorsque la surface est touchée. En outre, l'interrupteur comprend un détecteur destiné à détecter le rayon de lumière collimaté par toucher de la surface, le détecteur étant positionné au second foyer, de manière que l'interrupteur est activé en réponse au toucher de la surface.

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