NSN 6650-00-851-7615
Part Details | OPTICAL INSTRUMENT LENS
6650-00-851-7615 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: 7660502, 6650-00-851-7615, 00-851-7615, 6650008517615, 008517615
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-851-7615 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-851-7615
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 7660502 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-851-7615
| 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 | 1.060 INCHES NOMINAL |
| AXIAL THICKNESS | 0.310 INCHES NOMINAL AND 0.110 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.420 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.343 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | 4.145 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.153 INCHES |
| EQUIVALENT FOCAL LENGTH | 4.004 INCHES |
| BACK FOCAL LENGTH | 3.892 INCHES |
| FRONT FOCAL LENGTH | 3.472 INCHES |
| REFRACTION INDEX | 1.5170 NOMINAL AND 1.6210 NOMINAL |
| ABBE CONSTANT | B64.500$$B36.500 |
| FSC APPLICATION DATA | TELESCOPE,PANORAMIC,T177,INTEGRATED WITH FIRE CONTROL EQUIPMENT |
| END ITEM IDENTIFICATION | TELESCOPE,PANORAMIC,M117 |
