| Specifications | According to customer's specific requirements |
| Material | High-purity CVD ZnS / Sintered ZnS |
| Diameter Tolerance | ±0.01-0.2mm |
| Central Thickness Tolerance | ±0.1mm |
| PV | λ/4 |
| Parallelism | <3' |
| Surface Quality | 60/40 |
| Coating | Optional (MgF₂, Yttrium Fluoride) |
