Optical structure-zonal fourier analysis system - has long duration stable high classification probability and compensates fluctuation and drifter tendencies in measurement values

摘要

The system has light unit with a linear, polarising element (2) connected to it, the polarisation direction of which can be changed over. As object receiver, a picture converter (3) with an untwisted, nematic liq. crystal layer (31) is available, whereby the liq. crystal molecules are planar orientated, and in a suitable manner are variably influenced by outer pictorial charge accumulations. The polarisation direction of the polarising element (2), in order to achieve a standardising value in the receiver (5), is directed vertically to the director direction of the liq. crystal layer (31) of the picture converter (3). To produce the structure zonal measurement values in the receiver (5), the polarisation direction is at an angle to the director direction which deviates from the vertical position. The picture converter (3) is of the optically addressable type, and carries an object scene picked up by a camera lens, whereby to carry out the Fourier analysis it can be read in reflection and the reflected light is passed to the receiver (5) via a radiation divider. USE/ADVANTAGE - For intelligent sensors in robots, quickly control and sorting processes compensates for fluctuations and drifter tendencies in measurement values in optical structure zone Fourier analysis, in order to achieve acceptable classification probability.