Part Details | OPTICAL INSTRUMENT LENS
6650-00-450-1742 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: 1073976, 6650-00-450-1742, 00-450-1742, 6650004501742, 004501742
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | DEC 10, 1969 | 00-450-1742 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-450-1742
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 1073976 | 89944 | KOLLSMAN, INC. |
Technical Data | NSN 6650-00-450-1742
| Characteristic | Specifications |
|---|---|
| COMPOUND LENS STYLE | DOUBLET |
| INDIVIDUAL LENS STYLE | DOUBLE CONVEX AND PLANO-CONCAVE |
| DIAMETER | 0.787 INCHES NOMINAL |
| AXIAL THICKNESS | 0.158 INCHES NOMINAL AND 0.118 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.276 INCHES NOMINAL |
| EQUIVALENT FOCAL LENGTH | 57.324 INCHES |
| BACK FOCAL LENGTH | 56.689 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6220 NOMINAL |
| ABBE CONSTANT | B64.200$$B36.000 |
| SPECIAL FEATURES | TWO PARALLEL RED LINES ON FLAT SURFACE OF LENS |