| Specifications | According to customer's specific requirements |
| Material | BK7/K9 Optical Glass, H-K9L,JGS1, JGS2, Fused Silica |
| Diameter Tolerance | +0.0 / -0.2mm |
| Central Thickness Tolerance | ±0.1mm |
| PV | λ/2 |
| Angle tolerance | <1' |
| Surface Quality | 60/40 |
| Coating | Uncoated, AR Coating (UV/VIS/NIR), HR Coating (Aluminized/Silver) |
