NSN 6650-00-698-5869
Part Details | OPTICAL INSTRUMENT LENS
6650-00-698-5869 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: 7632375, 6650-00-698-5869, 00-698-5869, 6650006985869, 006985869
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1963 | 00-698-5869 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-698-5869
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7632375 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-698-5869
| 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 | 1.080 INCHES NOMINAL |
| AXIAL THICKNESS | 0.240 INCHES NOMINAL AND 0.125 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.365 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.296 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 9.117 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.353 INCHES |
| EQUIVALENT FOCAL LENGTH | 5.327 INCHES |
| BACK FOCAL LENGTH | 5.302 INCHES |
| REFRACTION INDEX | 1.5280 NOMINAL AND 1.6890 NOMINAL |
| ABBE CONSTANT | B51.600$$B30.900 |
| FSC APPLICATION DATA | TELESCOPE,INTEGRATED WITH FIRE CONTROL EQUIPMENT |