| ELEMENT LEFT SURFACE RADIUS | 6.134 INCHES AND 1.851 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.851 INCHES AND 6.134 INCHES |
| ABBE CONSTANT | 6.200 AND 27.700 |
| AXIAL THICKNESS | 0.150 INCHES NOMINAL AND 0.410 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.875 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.561 INCHES NOMINAL |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 1.395 INCHES NOMINAL |
| INDIVIDUAL LENS STYLE | MENISCUS DIVERGING AND PLANO-CONVEX |
| LENGTH | 0.561 INCHES NOMINAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,GRADE C,TYPE 697-562 MIL SPEC 1ST MATERIAL RESPONSE AND MIL-G-174,GRADE C,TYPE 751-277 MIL SPEC 2ND MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.6970 NOMINAL AND 1.7510 NOMINAL |
| SPECIAL FEATURES | EQUIVALENT FOCAL LG 4.916; BACK FOCAL LG 4.753; FRONT FOCAL LG 4.745 |