NSN 6650-00-585-1849
Part Details | OPTICAL INSTRUMENT LENS
6650-00-585-1849 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: 1073975PC1REVA, 1073975PC1, 6650-00-585-1849, 00-585-1849, 6650005851849, 005851849
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-585-1849 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-585-1849
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1073975PC1REVA | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 1073975PC1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-585-1849
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 0.433 INCHES NOMINAL |
| AXIAL THICKNESS | 0.197 INCHES NOMINAL AND 0.059 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.256 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.188 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 0.884 INCHES |
| BACK FOCAL LENGTH | 0.813 INCHES |
| FRONT FOCAL LENGTH | 0.779 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6489 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| FSC APPLICATION DATA | RANGE FINDERS,FIRE CONTROL |