NSN 6650-00-518-5191
Part Details | OPTICAL INSTRUMENT LENS
6650-00-518-5191 An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see WINDOW, OPTICAL INSTRUMENT. Excludes RETICLE, OPTICAL INSTRUMENT.
Alternate Parts: 5185191, 6650-00-518-5191, 00-518-5191, 6650005185191, 005185191
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-518-5191 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-518-5191
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5185191 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-518-5191
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 0.689 INCHES NOMINAL |
| AXIAL THICKNESS | 0.354 INCHES NOMINAL AND 0.055 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.409 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.291 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 0.638 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 0.480 INCHES |
| EQUIVALENT FOCAL LENGTH | 1.160 INCHES |
| BACK FOCAL LENGTH | 0.901 INCHES |
| REFRACTION INDEX | 1.5410 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B59.900$$B36.600 |
| FSC APPLICATION DATA | BINOCULAR,FIRE CONTROL |