NSN 6650-00-157-4145
Part Details | OPTICAL INSTRUMENT LENS
6650-00-157-4145 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: G8111PC12, 203035PC12, 203035PC12, 6650-00-157-4145, 00-157-4145, 6650001574145, 001574145
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-157-4145 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-157-4145
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| G8111PC12 | 74067 | KEUFFEL AND ESSER CO |
| 203035PC12 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 203035PC12 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-157-4145
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 22.0 MILLIMETERS NOMINAL |
| AXIAL THICKNESS | 4.0 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 6.0 MILLIMETERS NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 6.0 MILLIMETERS NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 168.1 MILLIMETERS AND -48.9 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | 48.9 MILLIMETERS AND 151.6 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 19.532 CENTIMETERS |
| BACK FOCAL LENGTH | 19.330 CENTIMETERS |
| FRONT FOCAL LENGTH | 19.327 CENTIMETERS |
| REFRACTION INDEX | 1.6170 NOMINAL AND 1.5185 NOMINAL |
| ABBE CONSTANT | B36.600$$B59.500 |
| END ITEM IDENTIFICATION | RANGEFINDER MK42 |