NSN 6650-00-864-2942
Part Details | OPTICAL INSTRUMENT LENS
6650-00-864-2942 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: 7660504, 7660504, 7660504, 6650-00-864-2942, 00-864-2942, 6650008642942, 008642942
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-864-2942 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-864-2942
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7660504 | 03829 | GENERAL SCIENTIFIC CORPORATIONDIV GENERAL SCIENTIFIC CORP |
| 7660504 | 94809 | PLUMMER PRECISION OPTICS CO |
| 7660504 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-864-2942
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 0.997 INCHES MINIMUM AND 1.000 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.364 INCHES NOMINAL AND 0.121 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.465 INCHES MINIMUM AND 0.505 INCHES MAXIMUM |
| ELEMENT LEFT SURFACE RADIUS | -1.589 INCHES AND 1.244 INCHES |
| EQUIVALENT FOCAL LENGTH | 2.534 INCHES |
| BACK FOCAL LENGTH | 2.192 INCHES |
| REFRACTION INDEX | 1.5730 NOMINAL AND 1.6890 NOMINAL |
| ABBE CONSTANT | B57.400$$B30.900 |
| SPECIAL FEATURES | PLANO EDGE CHAMFERED 0.020 INCH AT 45 DEGREES |
| FSC APPLICATION DATA | TELESCOPE,PANORAMIC |