It enables uniform, shadow-free lighting by directing light along the same optical axis as the lens. A beamsplitter plays a crucial role in optical systems that use coaxial illumination. When integrated into specialised lenses, the beam splitter divides the incoming light into two paths: one beam. A beam splitter or beamsplitter is an optical device that splits a beam of light into a transmitted and a reflected beam. Light. Diffractive optics is optics with optical elements whose operation principles are essentially based on the phenomenon of diffraction of light. Newport offers a wide variety of Beamsplitters in various shapes. Circular beamsplitters, plate beamsplitters and cube beamsplitters can be purchased for polarizing or non polarizing beamsplitting. CMBS series is a collection of 50/50 plate beam splitter modules designed to create highly efficient coaxial illumination solutions with Opto Engineering® telecentric lenses and collimated illuminators.