Part Details | OPTICAL INSTRUMENT LENS
6650-00-026-8135 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: 278702PC11, 278702PC11, 6650-00-026-8135, 00-026-8135, 6650000268135, 000268135
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-026-8135 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-026-8135
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 278702PC11 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 278702PC11 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-026-8135
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 2.283 INCHES NOMINAL |
| AXIAL THICKNESS | 0.345 INCHES NOMINAL AND 0.276 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.622 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.577 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -11.681 INCHES AND 13.078 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -11.681 INCHES AND 116.157 INCHES |
| EQUIVALENT FOCAL LENGTH | 27.562 INCHES |
| BACK FOCAL LENGTH | 27.169 INCHES |
| FRONT FOCAL LENGTH | 27.559 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B64.500$$B36.600 |
| FSC APPLICATION DATA | FIRE CONTROL,RANGE FINDER MK 37 MOD 5 |