NSN 6650-00-382-1938
Part Details | OPTICAL INSTRUMENT LENS
6650-00-382-1938 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: 3000077, LD172598PC2, LD172598GP2, 6650-00-382-1938, 00-382-1938, 6650003821938, 003821938
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-382-1938 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-382-1938
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 3000077 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD172598PC2 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD172598GP2 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-382-1938
| 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 | 0.472 INCHES NOMINAL |
| AXIAL THICKNESS | 0.177 INCHES NOMINAL AND 0.059 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.236 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.151 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 0.826 INCHES |
| BACK FOCAL LENGTH | 0.747 INCHES |
| FRONT FOCAL LENGTH | 0.742 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| FSC APPLICATION DATA | FIRE CONTROL,TELESCOPE,MK 75 |