| Type | Thickness | T400 | T435 | T435-T500 | T600-T500 | T600-Tg* |
| (mm) | ||||||
| TB1 | 2 | ≥83.0 | ≥1.5 | ≥3.0 | ||
| TB2 | 2 | ≥80.0 | 6.0±3.0 |
Optical Glasses
| Type | Thickness | T400 | T435 | T435-T500 | T600-T500 | T600-Tg* |
| (mm) | ||||||
| TB1 | 2 | ≥83.0 | ≥1.5 | ≥3.0 | ||
| TB2 | 2 | ≥80.0 | 6.0±3.0 |