| http://www.w3.org/ns/prov#value | - Although some degradation of the illumination pattern can be noticed in the form of e.g. an octagonal shape of the light beam when using such a low number of segments, i.e. 8 segments, this can be minimized by changing the number of segments from the entrance aperture towards the exit aperture at the expense of little loss in color homogeneity.
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