| Specifications | According to customer's specific requirements |
| Material | JGS1 (UV Grade), JGS2 (Optical Grade), JGS3 (IR Grade) Fused Silica |
| Diameter Tolerance | +0.0 / -0.2mm |
| Central Thickness Tolerance | ±0.1mm |
| PV | λ/4 |
| Angle tolerance | <3'(90°/45°) |
| Surface Quality | 60/40 |
| Coating | Uncoated, AR Coating (UV/VIS/NIR), HR Coating (Aluminized/Silver) |
