Part Details | OPTICAL INSTRUMENT LENS
6650-00-073-8842 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: 8626214, 6650-00-073-8842, 00-073-8842, 6650000738842, 000738842
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-073-8842 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-073-8842
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8626214 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-073-8842
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 1.097 INCHES MINIMUM AND 1.103 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.400 INCHES MINIMUM AND 0.420 INCHES MAXIMUM AND 0.092 INCHES MINIMUM AND 0.112 INCHES MAXIMUM |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.492 INCHES MINIMUM AND 0.532 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | 1.262 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.806 INCHES |
| EQUIVALENT FOCAL LENGTH | 2.901 INCHES |
| BACK FOCAL LENGTH | 2.518 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| SPECIAL FEATURES | FRONT AND BACK SURFACES COATED WITH MAGNESIUM FLUORIDE |
| FSC APPLICATION DATA | TELESCOPE PANORAMIC M113 |