II-VI Optical Systems provides prisms manufactured from a variety of substrate materials.  These are used primarily to change the direction of  incident light.  Offerings include small wedge Risley prisms, right angle Porro and fold prisms and corner-cube retro-reflectors.  When deposited with specifically designed coating stacks, prism assemblies function to separate or combine incident light based on wavelength and/or polarization orientation.  

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