Applicable to infrared imaging monitoringtelemetry and infrared spectroscopic optical system
| Diameter |
Focal length |
Radius |
Center thuckness |
edges thickness |
| 16.5 |
20 |
60 |
1.8 |
1 |
| 20/25.4 |
25.4mm |
76.3mm |
3.1mm |
2.0mm |
| 20/25.4 |
50mm |
150.3mm |
4.0mm |
3.5mm |
| 20/25.4 |
75mm |
225.5mm |
4.0mm |
3.6mm |
| 20/25.4 |
100mm |
300.7mm |
1.8mm |
1.5mm |
| 20/25.4 |
150mm |
451.0mm |
4.0mm |
3.8mm |
| 20/25.4 |
200mm |
601.4mm |
4.0mm |
3.9mm |
| 20/25.4 |
500mm |
1501.9mm |
2.1mm |
2.0mm |
| 20/25.4 |
750mm |
2252.9mm |
2.0mm |
2.0mm |
| 20/25.4 |
1000mm |
3303.9mm |
2.0mm |
2.0mm |
