Device for the optoelectronic detection of switching positions of a switching element

摘要

A device for detecting switching positions of an element movable along a detent curve. The device includes an optical transmitter and an optical receiver. A shutter is between the transmitter and the receiver. The shutter moves relative to the transmitter and the receiver in response to the element moving between switching positions. A light-beam aperture is on the detent curve at a point corresponding to a given switching position such that the light-beam aperture and a shutter aperture of the shutter are aligned when the element is in the given switching position. One of the transmitter and the receiver is positioned behind the detent curve and aligned with the light-beam aperture viewed from the direction of the other of the transmitter and the receiver such that light travels from the transmitter through the light-beam and shutter apertures to illuminate the receiver when the element is in the given switching position.