NSN 6650-00-155-1361
Part Details | OPTICAL INSTRUMENT LENS
6650-00-155-1361 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: 278694PC2, 278694PC2, 6650-00-155-1361, 00-155-1361, 6650001551361, 001551361
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-155-1361 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-155-1361
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 278694PC2 | 64804 | BAUSCH AND LOMB INCOPTHALMIC INSTRUMENT DIV |
| 278694PC2 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-155-1361
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 38.7 MILLIMETERS MINIMUM AND 39.2 MILLIMETERS MAXIMUM |
| AXIAL THICKNESS | 8.2 MILLIMETERS NOMINAL AND 4.0 MILLIMETERS NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 12.2 MILLIMETERS NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 186.2 MILLIMETERS AND -155.5 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | 155.5 MILLIMETERS AND 1001.8 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 36.360 CENTIMETERS |
| BACK FOCAL LENGTH | 36.400 CENTIMETERS |
| FRONT FOCAL LENGTH | 35.040 CENTIMETERS |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6210 NOMINAL |
| ABBE CONSTANT | B64.800$$B36.200 |
| END ITEM IDENTIFICATION | RANGEFINDER MK57 |