Abstract: A method and system for automatic detection of cells and determination of cell features from cytological smear preparations which can recognize cells and extract their features independently of known visual cell descriptions through digital classification in a data processing system confines evaluation of the cell to the cell nuclei.

Abstract: A solar cell arrangement with an associated optical collecting lens system. The lens system focuses a light impingement area onto the solar cell to intensify incident radiation. The collecting lens system includes an optically active layer provided between the light impingement area and the solar cells. The optically active layer images and disperses the incident light in a manner adapted to the surface and light absorption characteristics of the solar cells.

Abstract: A method for the production of solar cells with a thin-layer PN heterojunction, having a cadmium sulfide layer vapor deposited on an electrically conductive support and a cuprous sulfide layer chemically produced on the cadmium sulfide layer, and having an electrically conductive grid in contact with the cuprous sulfide layer, wherein the two layers and the conductive support are formed into one structural part, and the conductive grid is formed into a second structural part including a covering glass member, and the two structural parts are adhesively joined to form a closed encapsulated cell.