NSN 6650-00-683-9128
Part Details | OPTICAL INSTRUMENT LENS
6650-00-683-9128 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: MIL013830, 8598954, 6650-00-683-9128, 00-683-9128, 6650006839128, 006839128
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-683-9128 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-683-9128
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| MIL013830 | 81349 | MILITARY SPECIFICATIONSPROMULGATED BY MILITARY |
| 8598954 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-683-9128
| 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 PLANO-CONCAVE |
| DIAMETER | 1.100 INCHES NOMINAL |
| AXIAL THICKNESS | 0.233 INCHES NOMINAL AND 0.107 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.340 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.218 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 2.326 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.511 INCHES |
| EQUIVALENT FOCAL LENGTH | 3.500 INCHES |
| BACK FOCAL LENGTH | 3.335 INCHES |
| REFRACTION INDEX | 1.5722 NOMINAL AND 1.6890 NOMINAL |
| ABBE CONSTANT | B57.400$$B30.900 |
| FSC APPLICATION DATA | SIGHT,INFINITY,M44C,INTEGRATED WITH FIRE CONTROL EQUIPMENT |