NSN 6650-00-393-0318
Part Details | OPTICAL INSTRUMENT LENS
6650-00-393-0318 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: 11733408, 6650-00-393-0318, 00-393-0318, 6650003930318, 003930318
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | APR 01, 1974 | 00-393-0318 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLE CONCAVE
DOUBLE CONCAVE
Cross Reference | NSN 6650-00-393-0318
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 11733408 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-393-0318
| Characteristic | Specifications |
|---|---|
| SINGLE LENS STYLE | DOUBLE CONCAVE |
| DIAMETER | 3.527 INCHES MINIMUM AND 3.530 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.199 INCHES MINIMUM AND 0.209 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | -7.353 INCHES AND 7.353 INCHES |
| EQUIVALENT FOCAL LENGTH | -5.963 INCHES |
| BACK FOCAL LENGTH | -6.026 INCHES |
| REFRACTION INDEX | 1.6130 NOMINAL |
| ABBE CONSTANT | 44.300 |