Part Details | OPTICAL INSTRUMENT LENS
6650-00-155-1356 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: 2786948, 278694-8, 6650-00-155-1356, 00-155-1356, 6650001551356, 001551356
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-155-1356 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-155-1356
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 278694-8 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-155-1356
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 0.315 INCHES NOMINAL |
| AXIAL THICKNESS | 0.118 INCHES NOMINAL AND 0.039 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.157 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.134 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 1.110 INCHES |
| BACK FOCAL LENGTH | 1.033 INCHES |
| FRONT FOCAL LENGTH | 1.065 INCHES |
| REFRACTION INDEX | 1.5740 NOMINAL AND 1.6200 NOMINAL |
| ABBE CONSTANT | B57.700$$B36.200 |
| FSC APPLICATION DATA | FIRE CONTROL,RANGE FINDER,MK 57 |