Device to determine position and angle of two objects in relative motion, especially in high precision machine tools, which is based on two fields of rectangular windows, one with progressively increasing inclination

摘要

The device has a measuring field (10) with equally spaced windows (14) and webs (16) and a scanning field (12), with evenly changing windows (20) and webs (22). In the scanning field the angles ( alpha ) of edge (26,28) inclination differ progressively with increase in numbers of edges, in the angular interval under consideration.