Dichroic beamsplitter high performance dichroic filters and polychroic filters. A plate beamsplitter is a planar optic used to divide incoming light into reflected and transmitted components with a specified constant intensity ratio over a given wavelength range see dichroic beamsplitters for optics whose transmittance reflectance properties are wavelength dependent. Polarizing beamsplitters are similar devices that perform this function based on the polarization state of the input light.
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