NSN 6650-00-757-7960
Part Details | OPTICAL INSTRUMENT LENS
6650-00-757-7960 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: 7577960, 6650-00-757-7960, 00-757-7960, 6650007577960, 007577960
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-757-7960 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-757-7960
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7577960 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-757-7960
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX |
| DIAMETER | 2.218 INCHES NOMINAL |
| AXIAL THICKNESS | 0.080 INCHES NOMINAL AND 0.649 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.729 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.502 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -7.616 INCHES AND 2.148 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -2.148 INCHES AND 2.148 INCHES |
| EQUIVALENT FOCAL LENGTH | 7.871 INCHES |
| BACK FOCAL LENGTH | 8.333 INCHES |
| REFRACTION INDEX | 1.6170 NOMINAL AND 1.5170 NOMINAL |
| ABBE CONSTANT | B36.600$$B64.500 |
| FSC APPLICATION DATA | TELESCOPE,INTEGRATED WITH FIRE CONTROL |