| ELEMENT LEFT SURFACE RADIUS | 7.353 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 7.353 INCHES |
| ABBE CONSTANT | 44.300 AND 56.700 |
| BACK FOCAL LENGTH | 11.627 INCHES OR 11.707 INCHES |
| AXIAL THICKNESS | 0.204 INCHES NOMINAL AND 0.685 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.879 INCHES MINIMUM AND 0.899 INCHES MAXIMUM |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 4.075 INCHES MINIMUM AND 4.078 INCHES MAXIMUM |
| EQUIVALENT FOCAL LENGTH | 12.224 INCHES |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, GRADE B MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6130 NOMINAL AND 1.6070 NOMINAL |