NSN 6650-00-531-6357
Part Details | OPTICAL INSTRUMENT LENS
6650-00-531-6357 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: 5316357, 6650-00-531-6357, 00-531-6357, 6650005316357, 005316357
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-531-6357 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-531-6357
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 5316357 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-531-6357
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONCAVE AND DOUBLE CONVEX |
| DIAMETER | 1.424 INCHES MINIMUM AND 1.427 INCHES MAXIMUM |
| AXIAL THICKNESS | 0.064 INCHES NOMINAL AND 0.579 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.633 INCHES MINIMUM AND 0.653 INCHES MAXIMUM |
| COMPOUND LENS EDGE THICKNESS | 0.542 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 3.255 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.503 INCHES |
| EQUIVALENT FOCAL LENGTH | 8.090 INCHES |
| BACK FOCAL LENGTH | 8.944 INCHES |
| REFRACTION INDEX | 1.6170 MINIMUM AND 1.5170 MINIMUM |
| ABBE CONSTANT | B36.600$$B64.500 |
| SPECIAL FEATURES | REFLECTION REDUCING TREATMENT ON FRONT SURFACE,JAN-M-621 |
| FSC APPLICATION DATA | TELESCOPE BC M65 |