12.7mm Dia., 2mm Thick, Uncoated, ISP Optics Quartz Window | Q-W-12-2

Product Details High Transmission from 190 – 3500nm High Chemical Resistance Low Coefficient of Thermal Expansion ISP Optics Quartz Windows feature crystalline quartz (SiO 2 ) substrates, providing high transmission from the UV to the MWIR. Unlike fused silica, crystalline quartz does not have hydroxide ion impurities, allowing for its use between 1.4 – 2.7µm with no dips in transmission. The material also has high chemical resistance, a low coefficient of thermal expansion, and relatively high hardness, making these windows advantageous for use in harsh environments or those with fluctuating temperatures. ISP Optics Quartz Windows are ideal for use in UV, visible, or infrared applications as protective windows to protect sensors, lasers, or other electro-optical components. Specifications General Model Number: Q-W-12-2 Type: Protective Window Type of Window: Glass Physical & Mechanical Properties Clear Aperture CA (mm): 10.79 Diameter (mm): 12.70 +0.00/-0.13 Thickness (mm): 2.00 ±0.13 Parallelism (arcmin): <3 Bevel: Protective as needed Clear Aperture (%): 85 Edges: Fine Ground Poisson's Ratio: 0.16 Young's Modulus (GPa): 73 Knoop Hardness (kg/mm 2 ): 522.00 Optical Properties Coating: Uncoated Substrate: Many glass manufacturers offer the same material characteristics under different trade names. Learn More Quartz Index of Refraction (n d ): 1.458 Surface Quality: 40-20 Abbe Number (v d ): 67.8 Wavelength Range (nm): 190 - 3500 Surface Flatness (P-V): 1λ per inch @ 633nm Material Properties Density (g/cm 3 ): 2.20 Coefficient of Thermal Expansion CTE (10 -6 /°C): 0.52 (+5 to +35°C) 0.57 (0 to +200°C) 0.48 (-100 to +200°C) Regulatory Compliance RoHS 2015: Compliant × Certificate of Conformance: View × Reach 240: Compliant ×