Optical EngineeringDirect design of a polarization interference filter by genetic algorithm
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Polarization interference filters (PIFs) could substitute for thin films in three-panel projection systems for color separation/combination. Conventional methods of designing PIFs used inverse propagation of optical networks making the design procedure very complicated. The design of PIFs requires the determination of the thickness and orientation of the birefringent crystals. We advance a method of exploring all the possible thicknesses of the crystals, and the first-used genetic algorithm to find out the orientation of the crystals.