NSN 6650-00-155-1757
Part Details | OPTICAL INSTRUMENT LENS
6650-00-155-1757 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: 178697PC8, 6650-00-155-1757, 00-155-1757, 6650001551757, 001551757
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-155-1757 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-155-1757
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 178697PC8 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-155-1757
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 0.630 INCHES NOMINAL |
| AXIAL THICKNESS | 0.216 INCHES NOMINAL AND 0.082 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.299 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.279 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -1.031 INCHES AND 2.574 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -1.031 INCHES AND -6.023 INCHES |
| EQUIVALENT FOCAL LENGTH | 3.586 INCHES |
| BACK FOCAL LENGTH | 3.444 INCHES |
| FRONT FOCAL LENGTH | 3.539 INCHES |
| REFRACTION INDEX | 1.5720 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B57.400$$B36.600 |
| FSC APPLICATION DATA | FIRE CONTROL,RANGE FINDER MK 15 MOD 4 |