NSN 6650-00-899-5144
Part Details | OPTICAL INSTRUMENT LENS
6650-00-899-5144 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: 8587316, 6650-00-899-5144, 00-899-5144, 6650008995144, 008995144
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-899-5144 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-899-5144
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8587316 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-899-5144
| 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 | 0.920 INCHES NOMINAL |
| AXIAL THICKNESS | 0.188 INCHES NOMINAL AND 0.094 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.282 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.225 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 3.049 INCHES AND -2.347 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | -2.347 INCHES AND -9.009 INCHES |
| EQUIVALENT FOCAL LENGTH | -5.418 INCHES |
| BACK FOCAL LENGTH | 5.269 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B64.500$$B33.800 |
| END ITEM IDENTIFICATION | TELESCOPE 8587297 |
