Part Details | OPTICAL INSTRUMENT LENS
6650-00-622-4891 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: 1240006224891, 8289259, 6650-00-622-4891, 00-622-4891, 6650006224891, 006224891
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-622-4891 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLE CONVEX
DOUBLE CONVEX
Cross Reference | NSN 6650-00-622-4891
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1240006224891 | SCY13 | E.C.A ETABLISSEMENTCENTRALD'APPROVISIONNEMENT DES |
| 8289259 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-622-4891
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| SINGLE LENS STYLE | DOUBLE CONVEX |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX |
| DIAMETER | 1.650 INCHES NOMINAL |
| AXIAL THICKNESS | 0.360 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 2.892 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 6.810 INCHES |
| EQUIVALENT FOCAL LENGTH | 3.321 INCHES |
| BACK FOCAL LENGTH | 3.163 INCHES |
| REFRACTION INDEX | 1.6200 NOMINAL |
| ABBE CONSTANT | 60.300 |
| FSC APPLICATION DATA | PERISCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT |