_/_
F/12,0 F=83,007 mm (50,0°)
[ f/12,0 f=70,983 mm (50,0°) ]
_/_
F/12,0 F=83,007 mm (50,0°)
[ f/12,0 f=70,983 mm (50,0°) ]
N° |
Rayon |
Indice d |
Constringence |
Épaisseur |
0 |
air | ***** |
***** | |
1 |
-25,000 | 1,51020 |
64,3 |
3,000 |
2 |
31,100 | 1,61300 |
37,1 |
4,500 |
3 |
Dpt. plan | air |
***** |
53,100 |
4 |
-470,000 | 1,58900 |
60,8 |
7,700 |
5 |
-23,200 | 1,61290 |
36,9 |
4,200 |
6 |
-470,000 | 1,61290 |
58,3 |
6,800 |
7 |
-38,300 | air |
***** |
o3o-3k4f |
no dioptre diaphragme : 3 | Calcul n° 696
| |||
| Commentaire : GB 1913 07229 | ||||
| Inventeur : _/_ | Maison : Lacour-Berthiot | Date : 1913 | 2/3 | |