Part Details | OPTICAL INSTRUMENT LENS
6650-00-026-8137 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: 7995971, 799597-1, 7995971, 799597-1, 6650-00-026-8137, 00-026-8137, 6650000268137, 000268137
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-026-8137 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
TRIPLET
Cross Reference | NSN 6650-00-026-8137
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 799597-1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 799597-1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-026-8137
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | TRIPLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND DOUBLE CONCAVE |
| DIAMETER | 1.377 INCHES NOMINAL |
| AXIAL THICKNESS | 0.492 INCHES NOMINAL AND 0.074 INCHES NOMINAL AND 0.492 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 1.058 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.835 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -0.985 INCHES AND 2.165 INCHES AND 0.985 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -0.985 INCHES AND 0.985 INCHES AND 2.165 INCHES |
| EQUIVALENT FOCAL LENGTH | 4.112 INCHES |
| BACK FOCAL LENGTH | 3.729 INCHES |
| FRONT FOCAL LENGTH | 3.729 INCHES |
| REFRACTION INDEX | 1.5110 NOMINAL AND 1.6210 NOMINAL AND 1.5110 NOMINAL |
| ABBE CONSTANT | B63.500$$B36.200$$B63.500 |