| http://www.w3.org/ns/prov#value | - Imaging optics utilising lens systems other than the specifically described with reference to FIG. 1 or 2, or other methods such as holographic imaging, may be employed which distribute the input signals amongst the cells and convey the resulting signals from the cells to the outputs, however combinations of cylindrical and plano-convex lenses are simple and efficient and have the advantage of bei
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