NSN 6650-00-157-4139
Part Details | OPTICAL INSTRUMENT LENS
6650-00-157-4139 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: G8110PC15, 799640PC1, 203034PC15, 6650-00-157-4139, 00-157-4139, 6650001574139, 001574139
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-157-4139 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DIALYTE
Cross Reference | NSN 6650-00-157-4139
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| G8110PC15 | 74067 | KEUFFEL AND ESSER CO |
| 799640PC1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 203034PC15 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-157-4139
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DIALYTE |
| INDIVIDUAL LENS STYLE | MENISCUS DIVERGING AND DOUBLE CONVEX |
| DIAMETER | 29.0 MILLIMETERS NOMINAL |
| AXIAL THICKNESS | 2.0 MILLIMETERS NOMINAL AND 9.0 MILLIMETERS NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 11.0 MILLIMETERS NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 8565.0 MILLIMETERS AND 28.2 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | -28.2 MILLIMETERS AND 28.7 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 7.250 CENTIMETERS |
| BACK FOCAL LENGTH | 7.456 CENTIMETERS |
| REFRACTION INDEX | 1.6490 NOMINAL AND 1.5185 NOMINAL |
| ABBE CONSTANT | B33.800$$B59.600 |
| END ITEM IDENTIFICATION | RANGEFINDER MK42 |