NSN 6650-00-382-1808
Part Details | OPTICAL INSTRUMENT LENS
6650-00-382-1808 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: 248578PC34, 248578PC3-4, LD133777ITEM5, 248578PC34, 248578PC3-4, LD133777ITEM5, 6650-00-382-1808, 00-382-1808, 6650003821808, 003821808
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-382-1808 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-382-1808
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 248578PC3-4 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD133777ITEM5 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 248578PC3-4 | 53711 | NAVAL SEA SYSTEMS COMMAND |
| LD133777ITEM5 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-382-1808
| 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 | MENISCUS CONVERGING AND DOUBLE CONCAVE |
| DIAMETER | 1.161 INCHES NOMINAL |
| AXIAL THICKNESS | 0.098 INCHES NOMINAL AND 0.142 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.240 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.320 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -8.944 INCHES AND 1.970 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -3.228 INCHES AND 1.970 INCHES |
| EQUIVALENT FOCAL LENGTH | 5.761 INCHES |
| BACK FOCAL LENGTH | 5.759 INCHES |
| FRONT FOCAL LENGTH | 5.909 INCHES |
| REFRACTION INDEX | 1.5110 NOMINAL AND 1.7200 NOMINAL |
| ABBE CONSTANT | B63.500$$B29.300 |
