| http://www.w3.org/ns/prov#value | - The term optical element is intended to mean an at least partially transparent body which affects light passing through, for example by a parallel offset in the case of a plane-parallel plate or filter plate, by a converging or diverging effect in the case of a converging or diverging lens, or by distributing the light over particular target areas in angular ranges, irrespective of whether this ef
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