NSN 6650-00-768-8725
Part Details | OPTICAL INSTRUMENT LENS
6650-00-768-8725 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: 1240007688725, 7688725, 6650-00-768-8725, 00-768-8725, 6650007688725, 007688725
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-768-8725 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-768-8725
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1240007688725 | SCY13 | E.C.A ETABLISSEMENTCENTRALD'APPROVISIONNEMENT DES |
| 7688725 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-768-8725
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND DOUBLE CONCAVE |
| DIAMETER | 1.391 INCHES MINIMUM AND 1.397 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.108 INCHES MINIMUM AND 0.128 INCHES MAXIMUM AND 0.384 INCHES MINIMUM AND 0.404 INCHES MAXIMUM |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | 1.3400 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 2.4390 INCHES |
| EQUIVALENT FOCAL LENGTH | 96.940 INCHES |
| REFRACTION INDEX | 1.5110 NOMINAL AND 1.7200 NOMINAL |
| ABBE CONSTANT | B63.500$$B29.300 |
| SPECIAL FEATURES | CHAMFER EDGES 0.020 IN. MIN,0.030 IN. MAX. BY 45 DEG. FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE. |
| FSC APPLICATION DATA | PERISCOPE,TANK |