Optoelectrical transmitter for measuring mechanical quantities

摘要

The optoelectrical transmitter exhibits a light source (3), a detector (6) and an optical element (2) to which a mechanical quantity (M) to be measured is applied and which changes the intensity of the light of the light source received by the detector in accordance with the mechanical quantity. The detector (6) consists of two transparent surfaces arranged behind one another in the parallel beam path (5) of the light source (3) and having coincident opaque light-sensitive structures (6.2, 6.3), the light-sensitive structure (6.3) of one surface shading that (6.2) of the other surface. The optical element (2) is arranged on the side of the detector (6) facing away from the light source (3) and reflects the light of the light source (3) in such a manner that when the mechanical quantity (M) to be measured is applied to the optical element (2), light also passes onto the shaded light-sensitive structure (6.2). <IMAGE>