_/_
F/13,0 F=202,500 mm (20,0°)
[ f/13,0 f=202,591 mm (20,0°) ]
_/_
F/13,0 F=202,500 mm (20,0°)
[ f/13,0 f=202,591 mm (20,0°) ]
N° |
Rayon |
Indice d |
Constringence |
Épaisseur |
0 |
air | ***** |
***** | |
1 |
17,300 | 1,61280 |
58,3 |
4,179 |
2 |
-97,470 | air |
***** |
0,292 |
3 |
-57,340 | 1,55800 |
45,5 |
0,777 |
4 |
15,940 | air |
***** |
3,985 |
5 |
-51,510 | 1,52890 |
58,9 |
1,652 |
6 |
-37,900 | air |
***** |
o3o-3k4f |
no dioptre diaphragme : 1 | Calcul n° 694
| |||
| Commentaire : GB 1910 22157 II (sans L4) | ||||
| Inventeur : C .Beck | Maison : Beck | Date : 1910 | /111 | |