English
The high-durability anti-reflection (HDAR) coated fused silica window employs a precision fused silica substrate and is particularly suitable for applications requiring frequent use or cleaning, where the HDAR coating demonstrates its robust and durable characteristics. Similar to diamond-like carbon (DLC) coatings, the HDAR coating can withstand temperature cycling from -80 to +160°F, 24-hour high humidity exposure, continuous 24-hour salt spray, and 24-hour immersion in salt solutions. Deposited on fused silica substrates, these coatings ensure sustained high performance even in extremely harsh environments due to their exceptional mechanical and thermal stability. The high-durability anti-reflection (AR) coated fused silica window is an ideal choice for aerospace, defense, and industrial applications, as well as any optical application requiring durable protective windows.
1.HDAR coating meets the stringent abrasion resistance standard of MIL-C-675C
2.Low reflectance in the visible to near-infrared range
3. Suitable for harsh environments
4. Uncoated fused silica windows are also available
Effective Aperture CA (mm) | Diameter (mm) | Thickness (mm) | Dispersion Coefficient (vd) | Density (g/cm³) | Edge Condition | Refractive Index (nd) | Knoop Hardness (kg/mm²) | Parallelism (arcsec) | Poisson's Ratio (kg/mm²) | Surface Quality | Transmission Wavefront P - V (λ) | Wavelength Range (nm) | Young's Modulus (GPa) |
4.00 | 5.00 + 0.00 / - 0.10 | 1.00 ± 0.10 | 67.8 | 2.20 | Fine Ground | 1.458 | 522 | <5 | 0.16 | 20 - 10 | λ/10 | 400 - 1100 | 73 |
10.00 | 12.50 + 0.00 / - 0.20 | 1.50 ± 0.10 | 67.8 | 2.20 | Fine Ground | 1.458 | 522 | <5 | 0.16 | 20 - 10 | λ/10 | 400 - 1100 | 73 |
20.00 | 25.00 + 0.00 / - 0.20 | 3.00 ± 0.10 | 67.8 | 2.20 | Fine Ground | 1.458 | 522 | <5 | 0.16 | 20 - 10 | λ/10 | 400 - 1100 | 73 |
45.00 | 50.00 + 0.00 / - 0.20 | 3.00 ± 0.10 | 67.8 | 2.20 | Fine Ground | 1.458 | 522 | <5 | 0.16 | 20 - 10 | λ/10 | 400 - 1100 | 73 |
