Contactless distance measuring device - measures either dimensions of object or distance between two objects

摘要

The apparatus comprises a light source and an optical system projecting the object outline on an optoelectrical component with a converging lens before it. Its output signal is the measure for the required distance. A part of the light beam from the source is stopped by one of the outlines defining the distance to be measured, and the remaining part is reversed by 180 deg. and shifted sidewise, so that it reversed by 180 deg. and shifted sidewise, so that distance between the two light beams is measure for the distance in question. The optical system comprises at least one angle prism nd further optical elements, which guide the light beam over the required path.