NSN 6650-00-382-1958
Part Details | OPTICAL INSTRUMENT LENS
6650-00-382-1958 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: LD172600PC23, LD172600PC23, 6650-00-382-1958, 00-382-1958, 6650003821958, 003821958
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-382-1958 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-382-1958
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| LD172600PC23 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| LD172600PC23 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-382-1958
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 2.598 INCHES NOMINAL |
| AXIAL THICKNESS | 0.394 INCHES NOMINAL AND 0.394 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.787 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.746 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 18.905 INCHES |
| BACK FOCAL LENGTH | 18.424 INCHES |
| FRONT FOCAL LENGTH | 18.890 INCHES |
| REFRACTION INDEX | 1.5724 NOMINAL AND 1.6168 NOMINAL |
| ABBE CONSTANT | B57.400$$B36.600 |
| FSC APPLICATION DATA | FIRE CONTROL,PERISCOPE MK30 MOD 2 |
