Fuzhou Siaon Optoelectronic Technology Co., Ltd. provide Polarizing Cube Beamsplitters Polarizing Cube Beamsplitters split randomly polarized beams into two orthogonal,linearly, polarized components-S-polarizedlight is reflected at a 90deg. Angle while P-polarized light is transmitted. Each beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of prisms. Material: BK7 Grade A Optical Glass Dimension Tolerance:+0.0/-0.2mm Flatness: λ/4@632.8nm  Surface Quality:60-40 Extinction Ratio:>100:1 Beam Deviation:95% and Ts99% and Rp