| ELEMENT LEFT SURFACE RADIUS | -3.167 INCHES AND 5.391 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -3.167 INCHES AND 12.399 INCHES |
| ABBE CONSTANT | 62.100 AND 38.000 |
| AXIAL THICKNESS | 0.464 INCHES MINIMUM AND 0.472 INCHES MAXIMUM AND 0.278 INCHES MINIMUM AND 0.286 INCHES MAXIMUM |
| BACK FOCAL LENGTH | 7.772 INCHES |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.742 INCHES MINIMUM AND 0.758 INCHES MAXIMUM |
| COMPOUND LENS STYLE | DOUBLET |
| DIAMETER | 2.123 INCHES MINIMUM AND 2.125 INCHES MAXIMUM |
| EQUIVALENT FOCAL LENGTH | 8.126 INCHES |
| FRONT FOCAL LENGTH | 7.992 INCHES |
| FSC APPLICATION DATA | RECEIVER-TRANSMITTER,LASER |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174,CLASS 1,GRADE B,TYPE 531-621 AND TYPE 603-380 MIL SPEC SINGLE MATERIAL RESPONSE |
| MATERIAL | GLASS OPTICAL |
| REFRACTION INDEX | 1.5310 NOMINAL AND 1.6030 NOMINAL |
| SPECIAL FEATURES | BLACK ARROW ON PERIPHERY. FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE. CHAMFER EDGES 0.010 IN. TO 0.015 IN. BY 40 TO 50 DEG. RIM AND CHAMFERS GROUND. |