NSN 6650-00-816-0504
Part Details | OPTICAL INSTRUMENT LENS
6650-00-816-0504 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: 1575539, 6650-00-816-0504, 00-816-0504, 6650008160504, 008160504
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-816-0504 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-816-0504
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1575539 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-816-0504
| 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 CONVERGING |
| DIAMETER | 1.573 INCHES MINIMUM AND 1.575 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.315 INCHES NOMINAL AND 0.157 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.472 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.410 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 11.609 INCHES |
| BACK FOCAL LENGTH | 11.365 INCHES |
| FRONT FOCAL LENGTH | 11.548 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| FSC APPLICATION DATA | 1. FIRE CONTROL COMPUTING SIGHTS AND DEVICES |