NSN 6650-00-891-9850
Part Details | OPTICAL INSTRUMENT LENS
6650-00-891-9850 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: 8587318, 6650-00-891-9850, 00-891-9850, 6650008919850, 008919850
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 66 | JAN 01, 1962 | 00-891-9850 | 21884 ( LENS, OPTICAL INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
DOUBLET
Cross Reference | NSN 6650-00-891-9850
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| 8587318 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 6650-00-891-9850
| 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 CONCAVE AND DOUBLE CONVEX |
| DIAMETER | 0.834 INCHES NOMINAL |
| AXIAL THICKNESS | 0.106 INCHES NOMINAL AND 0.279 INCHES NOMINAL |
| COMPOUND LENS OVERALL AXIAL THICKNESS | 0.385 INCHES NOMINAL |
| COMPOUND LENS EDGE THICKNESS | 0.250 INCHES NOMINAL |
| ELEMENT LEFT SURFACE RADIUS | -0.314 INCHES AND 1.667 INCHES |
| ELEMENT RIGHT SURFACE RADIUS | 1.667 INCHES AND -0.574 INCHES |
| EQUIVALENT FOCAL LENGTH | -2.583 INCHES |
| BACK FOCAL LENGTH | 3.791 INCHES |
| REFRACTION INDEX | 1.6170 NOMINAL AND 1.6170 NOMINAL |
| ABBE CONSTANT | B36.600$$B54.900 |
| FSC APPLICATION DATA | TELESCOPE,PANORAMIC,INTEGRATED WITH FIRE CONTROL EQUIPMENT |
| END ITEM IDENTIFICATION | TELESCOPE 8587540 |
