Precision optical prism made of high-quality Corning 7980 fused silica. Available in custom sizes ranging from 5×5×5mm to 50×50×50mm,with a 20/10 surface quality (scratch-dig). Features dual coatings: 30% ± 5% transmittance at 632.8nm on surface A (beamsplitter), and >99%reflectance at 632nm, AOI 45° on surface X (HR coating). This combined design precisely manages beam splitting ratios and light path direction,perfectly suited for high-precision optical systems.