Part Details | OPTICAL INSTRUMENT LENS
6650-00-157-4140 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: G8110PC16, 799639PC1, 203034PC16, 203034, 6650-00-157-4140, 00-157-4140, 6650001574140, 001574140
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-157-4140 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-157-4140
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| G8110PC16 | 74067 | KEUFFEL AND ESSER CO |
| 799639PC1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 203034PC16 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 203034 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-157-4140
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 27.0 MILLIMETERS NOMINAL |
| AXIAL THICKNESS | 8.5 MILLIMETERS NOMINAL AND 2.0 MILLIMETERS NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 10.5 MILLIMETERS NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 25.6 MILLIMETERS AND -23.9 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | 23.9 MILLIMETERS AND 345.5 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 4.715 CENTIMETERS |
| BACK FOCAL LENGTH | 4.033 CENTIMETERS |
| REFRACTION INDEX | 1.6490 NOMINAL AND 1.5725 NOMINAL |
| ABBE CONSTANT | B33.800$$B57.400 |
| END ITEM IDENTIFICATION | RANGEFINDER MK42 |