NSN 6650-00-622-4890
Part Details | OPTICAL INSTRUMENT LENS
6650-00-622-4890 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: 1240006224890, 8289258, 6650-00-622-4890, 00-622-4890, 6650006224890, 006224890
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-622-4890 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-622-4890
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1240006224890 | SCY13 | E.C.A ETABLISSEMENTCENTRALD'APPROVISIONNEMENT DES |
| 8289258 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-622-4890
| 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 | 1.450 INCHES NOMINAL |
| AXIAL THICKNESS | 0.500 INCHES NOMINAL AND 0.100 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.600 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.109 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 1.333 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.547 INCHES |
| EQUIVALENT FOCAL LENGTH | 2.528 INCHES |
| BACK FOCAL LENGTH | 2.096 INCHES |
| REFRACTION INDEX | 1.6200 NOMINAL AND 1.6490 NOMINAL |
| ABBE CONSTANT | B60.300$$B33.800 |
| FSC APPLICATION DATA | PERISCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT |