NSN 6650-00-789-4017
Part Details | OPTICAL INSTRUMENT LENS
6650-00-789-4017 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: 8566940, 6650-00-789-4017, 00-789-4017, 6650007894017, 007894017
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-789-4017 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
PLANO-CONCAVE
PLANO-CONCAVE
Cross Reference | NSN 6650-00-789-4017
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8566940 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-789-4017
| Characteristic | Specifications |
|---|---|
| SINGLE LENS STYLE | PLANO-CONCAVE |
| DIAMETER | 0.942 INCHES MINIMUM AND 0.945 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.118 INCHES MINIMUM AND 0.134 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | 1.823 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.823 INCHES |
| EQUIVALENT FOCAL LENGTH | -2.532 INCHES |
| BACK FOCAL LENGTH | -2.605 INCHES |
| REFRACTION INDEX | 1.7200 NOMINAL |
| ABBE CONSTANT | 29.300 |
| SPECIAL FEATURES | FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE |