NSN 6650-00-382-1874
Part Details | OPTICAL INSTRUMENT LENS
6650-00-382-1874 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: LD172589PC94, LD172589GP94, LD172589PC94, 6650-00-382-1874, 00-382-1874, 6650003821874, 003821874
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-382-1874 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-382-1874
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| LD172589PC94 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD172589GP94 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD172589PC94 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-382-1874
| 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 | 2.480 INCHES NOMINAL |
| AXIAL THICKNESS | 0.354 INCHES NOMINAL AND 0.197 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.551 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.461 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -5.866 INCHES AND 10.542 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -5.866 INCHES AND -46.446 INCHES |
| EQUIVALENT FOCAL LENGTH | 16.722 INCHES |
| BACK FOCAL LENGTH | 16.422 INCHES |
| FRONT FOCAL LENGTH | 16.675 INCHES |
| REFRACTION INDEX | 1.5740 NOMINAL AND 1.6210 NOMINAL |
| ABBE CONSTANT | B57.700$$B36.600 |
| FSC APPLICATION DATA | 1. FIRE CONTROL,TELESCOPE,MK66 |
