NSN 6650-00-531-6908
Part Details | OPTICAL INSTRUMENT LENS
6650-00-531-6908 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: 5316908, 6650-00-531-6908, 00-531-6908, 6650005316908, 005316908
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-531-6908 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-531-6908
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5316908 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-531-6908
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND MENISCUS |
| DIAMETER | 2.255 INCHES NOMINAL |
| AXIAL THICKNESS | 0.393 INCHES NOMINAL AND 0.277 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.670 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -6.082 MILLIMETERS AND 7.390 MILLIMETERS |
| ELEMENT RIGHT SURFACE RADIUS | -35.390 MILLIMETERS AND -6.082 MILLIMETERS |
| EQUIVALENT FOCAL LENGTH | 14.130 INCHES |
| BACK FOCAL LENGTH | 13.744 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B64.500$$B36.600 |