NSN 6650-00-520-4662
Part Details | OPTICAL INSTRUMENT LENS
6650-00-520-4662 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: 5204662, 6650-00-520-4662, 00-520-4662, 6650005204662, 005204662
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-520-4662 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-520-4662
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5204662 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-520-4662
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS DIVERGING |
| DIAMETER | 2.047 INCHES NOMINAL |
| AXIAL THICKNESS | 0.358 INCHES NOMINAL AND 0.260 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.619 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.438 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 6.051 INCHES AND -6.086 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -6.173 INCHES AND -68.563 INCHES |
| EQUIVALENT FOCAL LENGTH | 13.004 INCHES |
| BACK FOCAL LENGTH | 12.597 INCHES |
| FRONT FOCAL LENGTH | 12.159 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B64.500$$B36.600 |
| FSC APPLICATION DATA | TELESCOPE,MODEL M49 |