NSN 6650-00-683-9557
Part Details | OPTICAL INSTRUMENT LENS
6650-00-683-9557 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: 1240006839557, MIL013830, 8574706, 6650-00-683-9557, 00-683-9557, 6650006839557, 006839557
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-683-9557 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLE CONVEX
DOUBLE CONVEX
Cross Reference | NSN 6650-00-683-9557
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1240006839557 | A00AM | E.C.A ETABLISSEMENT CENTRALDESAPPROVISIONNEMENTS DES FORCES |
| MIL013830 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 8574706 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-683-9557
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| SINGLE LENS STYLE | DOUBLE CONVEX |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX |
| DIAMETER | 2.244 INCHES NOMINAL |
| AXIAL THICKNESS | 0.354 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 5.524 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 5.524 INCHES |
| EQUIVALENT FOCAL LENGTH | 4.576 INCHES |
| BACK FOCAL LENGTH | 4.465 INCHES |
| REFRACTION INDEX | 1.6110 NOMINAL |
| ABBE CONSTANT | 58.800 |
| FSC APPLICATION DATA | TELESCOPE,M105C,INTEGRATED WITH FIRE CONTROL EQUIPMENT |