NSN 6650-00-758-0292
Part Details | OPTICAL INSTRUMENT LENS
6650-00-758-0292 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: 7580292, 6650-00-758-0292, 00-758-0292, 6650007580292, 007580292
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | FEB 17, 1967 | 00-758-0292 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-758-0292
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7580292 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-758-0292
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 1.749 INCHES NOMINAL |
| AXIAL THICKNESS | 0.414 INCHES NOMINAL AND 0.178 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.592 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.474 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -3.337 INCHES AND 4.723 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -10.542 INCHES AND -3.337 INCHES |
| EQUIVALENT FOCAL LENGTH | 7.500 INCHES |
| BACK FOCAL LENGTH | 7.214 INCHES |
| FRONT FOCAL LENGTH | 6.622 INCHES |
| REFRACTION INDEX | 1.5230 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B58.600$$B33.800 |
| FSC APPLICATION DATA | PERISCOPE INTEGRATED WITH FIRE CONTROL EQUIP |