F/4,0 F=100,000 mm (30,0°)
[ f/4,0 f=97,572 mm (30,0°) ]
F/4,0 F=100,000 mm (30,0°)
[ f/4,0 f=97,572 mm (30,0°) ]
N° |
Rayon |
Indice d |
Constringence |
Épaisseur |
0 |
air | ***** |
***** | |
1 |
57,600 | 1,51700 |
52 |
12,300 |
2 |
-39,100 | 1,63720 |
35 |
1,300 |
3 |
Dpt. plan | air |
***** |
28,000 |
4 |
Dpt. plan | 1,63720 |
35 |
1,300 |
5 |
39,100 | 1,51700 |
52 |
12,300 |
6 |
-57,600 | air |
***** |
o3o-3k4f |
no dioptre diaphragme : 3 | Calcul n° 647
| |||
| Commentaire : [reconstitution, probablement proche du Busch Perscheid de 1921] | ||||
| Inventeur : _/_ | Maison : _/_ | Date : 1860 | 2/2 | |