55mm Dia. NIR I Laser Debris Shield

Product Details Protective Shield for Optical Systems Sizes from 50mm to 134mm Uncoated and Laser Line Coated Options Available Laser Debris Shields, also referred to as laser cover slides or laser cover glass, are designed for use in laser machining applications and can dramatically improve the longevity of more complex optical assemblies within a system. These shields are constructed of durable fused silica or fused quartz for an optimal combination of transmission and protection from harsh manufacturing environments. Laser Debris Shields are available either uncoated, in a variety of Nd:YAG laser line Anti Reflective coatings that provide reflectivity of less than 0.25% per surface, or with a NIR I Broadand coating with reflectivity of less than 0.5% per surface. Specifications General Type: Protective Window Type of Window: Glass Physical & Mechanical Properties Clear Aperture CA (mm): 46.75 Diameter (mm): 55.00 ±0.1 Thickness (mm): 1.50 +0.15/-0.00 Parallelism (arcmin): <45 Bevel: Break Edges Clear Aperture (%): 85 Edges: Fine Ground Poisson's Ratio: 0.16 Young's Modulus (GPa): 73 Knoop Hardness (kg/mm 2 ): 522.00 Knoop Hardness (GPa): 522 Optical Properties Coating: NIR I (600-1050nm) Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Fused Quartz Index of Refraction (n d ): 1.458 Surface Quality: 40-20 Transmitted Wavefront, P-V: λ/2 (70% of Dia.) Abbe Number (v d ): 67.8 Coating Specification: R avg ≤0.5% @ 600 - 1050nm Wavelength Range (nm): 600 - 1050 Material Properties Density (g/cm 3 ): 2.2 Coefficient of Thermal Expansion CTE (10 -6 /°C): 0.52 Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 235: Compliant ×