NSN 6650-00-683-9549
Part Details | OPTICAL INSTRUMENT LENS
6650-00-683-9549 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: 1240006839549, MIL013830, 8574718, 6650-00-683-9549, 00-683-9549, 6650006839549, 006839549
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-683-9549 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-683-9549
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1240006839549 | A00AM | E.C.A ETABLISSEMENT CENTRALDESAPPROVISIONNEMENTS DES FORCES |
| MIL013830 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 8574718 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-683-9549
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 2.165 INCHES NOMINAL |
| AXIAL THICKNESS | 0.394 INCHES NOMINAL AND 0.157 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.551 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.473 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 4.213 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 4.213 INCHES |
| EQUIVALENT FOCAL LENGTH | 8.133 INCHES |
| BACK FOCAL LENGTH | 7.808 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6725 NOMINAL |
| ABBE CONSTANT | B63.500$$B32.200 |