apparatus for anvendning in an optical lesmaskin for tvadimensionella linjemonster for optical transformation of such a linjemonster in a number of different channels to opto - electronic avkennbara pictures

摘要

An apparatus for use in an optical reading machine for two-dimensional line patterns for the optical transformation of such a line pattern in a number of spaced channels into opto-electronically detectable images each of which is correlated with the original line pattern and extracts a certain line orientation therefrom by means of an optical filter in each channel having uni-directional power of resolution and one-dimensional redundance, said optical filters being arranged with different directions of resolution in the individual channels, the image plane of each channel being raster sub-divided into elementary areas each of which is subjected to an opto-electronical detection of the presence of line segments or tangential inclinations having a direction corresponding to the resolution of the same channel.