A modular track light emitting diode lighting assembly is provided for improved product lighting in display cases, including refrigeration applications. The consecutive frames of a digital video sequence can be represented as feature vectors which are successively accumulated in a set of vectors. At least two of the more than one facet being arranged at Brewster’s angle and positioned in different radial orientations which are adapted to provide differential transmission or reflection of polarized electro-magnetic radiation coming from a common source.