Protar
F/12,5    F=100,000 mm    (60,0°)
[ f/12,5    f=99,896 mm    (60,0°) ]
| N° | Rayon | Indice d | Constringence | Épaisseur | 
| 0 | air | ***** | ***** | |
| 1 | 23,230 | 1,62750 | ***** | 1,144 | 
| 2 | 11,440 | 1,58130 | ***** | 2,601 | 
| 3 | 16,130 | 1,62270 | ***** | 2,948 | 
| 4 | -76,640 | 1,49790 | ***** | 0,832 | 
| 5 | 20,810 | air | ***** | 8,115 | 
| 6 | -20,810 | 1,49790 | ***** | 0,832 | 
| 7 | 76,640 | 1,62270 | ***** | 2,948 | 
| 8 | -16,130 | 1,58130 | ***** | 2,601 | 
| 9 | -11,440 | 1,62750 | ***** | 1,144 | 
| 10 | -23,230 | air | ***** | o3o-3k4f | 
|  no dioptre diaphragme : 5 | Calcul n° 141
 | |||
| Commentaire : {00140}US 1 021 337 (arrière) | ||||
| Inventeur : P. Rudolph | Maison : Zeiss | Date : 1912 | 4/4 | |