NSN 6650-00-393-0281
Part Details | OPTICAL INSTRUMENT LENS
6650-00-393-0281 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: 11733406, 6650-00-393-0281, 00-393-0281, 6650003930281, 003930281
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | APR 01, 1974 | 00-393-0281 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-393-0281
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 11733406 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-393-0281
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 4.075 INCHES MINIMUM AND 4.078 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.204 INCHES NOMINAL AND 0.685 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.879 INCHES MINIMUM AND 0.899 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | 7.353 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 7.353 INCHES |
| EQUIVALENT FOCAL LENGTH | 12.224 INCHES |
| BACK FOCAL LENGTH | A11.627$A11.707 |
| REFRACTION INDEX | 1.6130 NOMINAL AND 1.6070 NOMINAL |
| ABBE CONSTANT | B44.300$$B56.700 |