45° AOI Window, Fused Silica, 50mm Sq. NIR

Product Details Coating Optimized for Maximum Transmission At 45° Ideal For Use as Protective Windows Available In VIS and NIR Options TECHSPEC 45° AOI 1λ Fused Silica Windows are precision manufactured from UV-Fused Silica substrates, with an anti-reflection coating optimized for a 45° angle of incidence. Compared to traditional AR-coatings, which are often specified at a 0° angle of incidence, these windows offer superior transmission at steep incidence angles, making them an excellent choice for use as protective windows. Offered in a VIS (400-700nm) or NIR (700-1100nm) coated option, and in square or circular form factors, these windows are able to be used as protective windows or as beamsplitter compensation plates in interferometer systems. TECHSPEC 45° AOI 1λ Fused Silica Windows are ideal for applications including metrology, interferometry, and Display Protection. Specifications Physical & Mechanical Properties Clear Aperture CA (mm): 45.00 x 45.00 Dimensions (mm): 50 x 50 +0.00/-0.20 Thickness (mm): 4.00 ± 0.20 Parallelism (arcmin): <5 Bevel: Protective as needed Clear Aperture (%): 90 Edges: Fine Ground Optical Properties Coating: 45 Degree AOI BBAR (700-1100nm) Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Silica (Corning 7980) Surface Quality: 60-40 Coating Specification: S1 & S2: R abs ≤ 2.0% from 700-1100nm @ 45 deg AOI R avg ≤ 1.0% from 700-1100nm @ 45 deg AOI Wavelength Range (nm): 700 - 1100 Surface Flatness (P-V): λ @ 632.8nm Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 253: Compliant ×