NSN 6650-00-765-3189
Part Details | OPTICAL INSTRUMENT LENS
6650-00-765-3189 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: 7653189, 6650-00-765-3189, 00-765-3189, 6650007653189, 007653189
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-765-3189 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-765-3189
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7653189 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-765-3189
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 1.186 INCHES NOMINAL |
| AXIAL THICKNESS | 0.405 INCHES NOMINAL AND 0.088 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.493 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.250 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 1.1470 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.4810 INCHES |
| EQUIVALENT FOCAL LENGTH | 1.969 INCHES |
| BACK FOCAL LENGTH | 1.668 INCHES |
| REFRACTION INDEX | 1.5725 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B57.400$$B33.800 |
| FSC APPLICATION DATA | PERISCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT |