Medium Infrared Wave Anti-reflection Film
Detail
Anti-reflection coatings reduce first surface reflection losses, improve contrast and boost the transmission through optical surface.
For the MIR lens, usually using 3μm~5μm or 3.7μm~4.8μm wave. The main sustrates materials and film performance as the list below.
| optical performance | |
| Ge | Tavg≥99.2%，Ravg≤2‰ @3.5μm~5μm |
| Si | Tavg≥99.2%，Ravg≤2‰ @3.5μm~5μm |
| ZnS | Tavg≥99%，Ravg≤5‰ @3.5μm~5μm |
| ZnSe | Tavg≥99%，Ravg≤5‰ @3.5μm~5μm |