Part Details | OPTICAL INSTRUMENT LENS
6650-00-621-2929 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: 6650006212929, 8200002, 6650-00-621-2929, 00-621-2929, 6650006212929, 006212929
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-621-2929 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-621-2929
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 6650006212929 | A00AM | E.C.A ETABLISSEMENT CENTRALDESAPPROVISIONNEMENTS DES FORCES |
| 8200002 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-621-2929
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 0.968 INCHES NOMINAL |
| AXIAL THICKNESS | 0.300 INCHES NOMINAL AND 0.090 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.390 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.262 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 1.185 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.185 INCHES |
| EQUIVALENT FOCAL LENGTH | 1.828 INCHES |
| BACK FOCAL LENGTH | 1.617 INCHES |
| REFRACTION INDEX | 1.5725 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B57.400$$B33.800 |
| FSC APPLICATION DATA | FINDER,RANGE,M12,INTEGRATED WITH FIRE CONTROL EQUIPMENT |