NSN 6650-00-155-1764
Part Details | OPTICAL INSTRUMENT LENS
6650-00-155-1764 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: 278694PC14, 745659PC1, 278694PC14, 745659PC1, 6650-00-155-1764, 00-155-1764, 6650001551764, 001551764
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-155-1764 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-155-1764
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 278694PC14 | 64804 | BAUSCH AND LOMB INCOPTHALMIC INSTRUMENT DIV |
| 745659PC1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 278694PC14 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
| 745659PC1 | 53711 | NAVAL SEA SYSTEMS COMMAND |
Technical Data | NSN 6650-00-155-1764
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 5.0 MILLIMETERS NOMINAL |
| AXIAL THICKNESS | 2.2 MILLIMETERS NOMINAL AND 1.1 MILLIMETERS NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 3.3 MILLIMETERS NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 22.1 MILLIMETERS AND -8.5 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | 8.5 MILLIMETERS AND 30.7 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 2.700 CENTIMETERS |
| BACK FOCAL LENGTH | 2.720 CENTIMETERS |
| FRONT FOCAL LENGTH | 2.760 CENTIMETERS |
| REFRACTION INDEX | 1.5725 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B57.400$$B36.600 |
| END ITEM IDENTIFICATION | RANGEFINDER MK57 |