Part Details | OPTICAL INSTRUMENT LENS
6650-00-119-3966 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: 8644284, 6650-00-119-3966, 00-119-3966, 6650001193966, 001193966
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | OCT 18, 1968 | 00-119-3966 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-119-3966
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8644284 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-119-3966
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX |
| DIAMETER | 3.097 INCHES MINIMUM AND 3.100 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.297 INCHES MINIMUM AND 0.317 INCHES MAXIMUM AND 0.705 INCHES MINIMUM AND 0.725 INCHES MAXIMUM |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 1.002 INCHES MINIMUM AND 1.042 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | 143.191 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | 6.256 INCHES |
| EQUIVALENT FOCAL LENGTH | 16.560 INCHES |
| BACK FOCAL LENGTH | 15.807 INCHES |
| REFRACTION INDEX | 1.6490 NOMINAL AND 1.5880 NOMINAL |
| ABBE CONSTANT | B33.800$$B53.400 |
| SPECIAL FEATURES | FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE |
| FSC APPLICATION DATA | COLLIMATOR |