Long 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 LIR lens, usually using 8μm~12μm or 8μm~14μm wave. The main sustrates materials and film performance as the list below.
| optical performance | |
| Ge | Tavg≥97.8%，Ravg≤4.5‰ @8μm~12μm |
| ZnS | Tavg≥95%，Ravg≤1.2％ @8μm~12μm |
| ZnSe | Tavg≥97.5%，Ravg≤1％ @8μm~12μm |