Fuzhou Siaon Optoelectronic Technology Co., Ltd. provide Beamsplitter Cube Cube beamsplitters are constructed by cementing two precision right angle prism together with appropriate interference coating on the hypotenuse surface. The absorption loss to the coating is minimal transmission and reflection approach 50% (average) though output is partially polarized. If polarization sensitivity is critical to your online ordering, we recommended that you select from our Polarizing Cube Beamsplitters or Non-Polarizing Cube Beamsplitters. Material: BK7 Grade A Optical Glass Dimension Tolerance:+0.0/-0.2mm Clear Aperture: >90% Flatness: λ/2@632.8nm Surface Quality:60-40 Beam Deviation: