NSN 6650-00-618-5618
Part Details | OPTICAL INSTRUMENT LENS
6650-00-618-5618 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: 1073955PC1, 1073955PC1, 6650-00-618-5618, 00-618-5618, 6650006185618, 006185618
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-618-5618 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-618-5618
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1073955PC1 | 14001 | GRAYCO OPTICAL CORP |
| 1073955PC1 | 10001 | NAVAIR AND NAVSEA MANAGEDORIGINAL DESIGN ACTIVITY DWG NOT |
Technical Data | NSN 6650-00-618-5618
| Characteristic | Specifications |
|---|---|
| MATERIAL | GLASS OPTICAL |
| MATERIAL DOCUMENT AND CLASSIFICATION | MIL-G-174, CLASS 1, GRADE C MIL SPEC SINGLE MATERIAL RESPONSE |
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 0.826 INCHES MINIMUM AND 0.827 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.236 INCHES NOMINAL AND 0.059 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.295 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.193 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 1.521 INCHES |
| BACK FOCAL LENGTH | 1.509 INCHES |
| FRONT FOCAL LENGTH | 1.349 INCHES |
| REFRACTION INDEX | 1.6110 NOMINAL AND 1.6489 NOMINAL |
| ABBE CONSTANT | B58.800$$B33.800 |
| FSC APPLICATION DATA | OPTICAL SIGHTING RANGING EQUIPMENT |