NSN 6650-00-503-7651
Part Details | OPTICAL INSTRUMENT LENS
6650-00-503-7651 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: 5037651, 6650-00-503-7651, 00-503-7651, 6650005037651, 005037651
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-503-7651 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-503-7651
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5037651 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-503-7651
| 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 | 0.719 INCHES NOMINAL |
| AXIAL THICKNESS | 0.206 INCHES NOMINAL AND 0.049 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.255 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.153 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 1.107 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 0.682 INCHES |
| EQUIVALENT FOCAL LENGTH | 1.485 INCHES |
| BACK FOCAL LENGTH | 1.378 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| FSC APPLICATION DATA | INSTRUMENT,AZIMUTH,M1918A,INTEGRATED WITH FIRE CONTROL EQUIPMENT |