Displacement/angle sensor

摘要

Displacement (position)/angle sensor having two mutually laterally rotated optical sensors and spatial frequency filters (10, 12) which are constructed as diode arrays. A lens (14) and thereabove a telecentric diaphragm as a cross slit diaphragm (16) having slits (18, 20) aligned perpendicular to one another are inserted into the beam path of the diode arrays. A deflecting mirror (22) is arranged above one of the slits (18), with the result that one diode array (10) is arranged in the reflected beam path of one slit (18) and the other diode array (12) is arranged in the transmitted beam path of the other slit (20). Owing to the cross slit diaphragm (16), a virtually lossless distribution of the beam path between the two diode arrays is achieved, with the result that either the diaphragm opening of the cross slit diaphragm (16) can be reduced for the purpose of improving the imaging, or the measuring arrangement operates with an adequate signal-to-noise ratio even in the case of road pavements (28) of low reflectivity. <IMAGE>