3″ Diameter, BBAR (400-1000nm) Coated, Plastic Polycarbonate Window

Product Details High Visible Light Transmission Excellent Thermal Stability Durable and Lightweight Acrylic (PMMA) Plastic Windows Also Available Polycarbonate Plastic Windows are a lightweight alternative to glass windows. Combining durability and high transmission, these windows are an ideal cost-effective solution for harsh environments and displays. Compared to PMMA acrylic windows, polycarbonate windows are more impact resistant and stronger but are more susceptible to scratches. Polycarbonate Plastic Windows feature lower water absorption and a higher softening temperature than PMMA, but their higher index of refraction leads to higher Fresnel reflections without AR coatings. Their strength and stability make these windows ideal for use in medical and industrial applications. Specifications General Type: Protective Window Physical & Mechanical Properties Clear Aperture CA (mm): 68.58 Diameter (inches): 3 Diameter (mm): 76.20 ±0.254 Thickness (inches): 0.06 Thickness (mm): 1.52 ±0.1 Bevel: Protective as needed Edges: Smooth, Machined Optical Properties Coating: BBAR (400-1000nm) Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Polycarbonate Index of Refraction (n d ): 1.585 Abbe Number (v d ): 34 Coating Specification: R avg ≤1.25% @ 400 – 1000nm Wavelength Range (nm): 400 – 1000 Material Properties Coefficient of Thermal Expansion CTE (10 -6 /°C): 68 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×