NSN 6650-00-816-0506
Part Details | OPTICAL INSTRUMENT LENS
6650-00-816-0506 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: 1575537, 6650-00-816-0506, 00-816-0506, 6650008160506, 008160506
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-816-0506 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-816-0506
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1575537 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-816-0506
| 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 | 2.518 INCHES MINIMUM AND 2.520 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.689 INCHES NOMINAL AND 0.157 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.846 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.590 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -2.283 INCHES AND 3.710 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -2.283 INCHES AND -6.036 INCHES |
| EQUIVALENT FOCAL LENGTH | 5.404 INCHES |
| BACK FOCAL LENGTH | 5.225 INCHES |
| FRONT FOCAL LENGTH | 5.018 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 |