Part Details | OPTICAL INSTRUMENT LENS
6650-00-518-2960 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: 5182960, 6650-00-518-2960, 00-518-2960, 6650005182960, 005182960
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-518-2960 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-518-2960
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5182960 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-518-2960
| 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 | 1.102 INCHES NOMINAL |
| AXIAL THICKNESS | 0.337 INCHES NOMINAL AND 0.081 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.418 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.250 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 1.355 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.255 INCHES |
| EQUIVALENT FOCAL LENGTH | 1.849 INCHES |
| BACK FOCAL LENGTH | 1.636 INCHES |
| REFRACTION INDEX | 1.6109 NOMINAL AND 1.6479 NOMINAL |
| ABBE CONSTANT | B57.200$$B33.800 |