透射镜片材料 — Silver Bromide (AgBr) 溴化银
| Transmission Range | 0.49 – 32 µm |
| Refractive Index | 2.2421 @633 nm |
| Reflection Loss | 14.53% @0.67 µm |
| Residual Beam Wavelength | 112.7 µm |
| Density | 6.473 g/cm3 |
| Melting point | 432 °C |
| Molecular Weight | 187.77 |
| Thermal Conductivity | 1.21 W/(m·K) @273K |
| Spec. Heat Capacity | 292 J/(kg·K) @273K |
| Thermal Expansion | 35 · 10-6/K @298-333K |
| Hardness (Mohs) | 7 |
| Young’s Modulus | 24.7 |
| Shear Modulus | 8.8 |
| Bulk Modulus | 44.03 |
| Elastic Coefficient | C11 = 56.3; C12 = 32.8; C44 = 7.26 GPa |
| Dielectric Constant | 13.1 (1 Mhz, 300K) |
| Solubility in Water | 0.000015 g/100g @20°C |
| Crystal Structure | cubic, NaCl type structure, a=5.77 Å |
| Crystal Type | single crystal, synthetic |
| Cleavage Planes | No cleavage |
| Standard Diameter | 70 mm |
| Application | transmits further into IR, harder, less susceptible to solarisation comp. to AgCl |
