Part Details | TELESCOPIC INSTRUMENT LIGHT FILTER
1240-00-007-8429 An item having two plane-parallel surfaces and used in the telescopic system of an optical instrument to modify the density or spectral intensity of light by absorption. Several filters having varied characteristics are usually mounted in such a manner that any selected filter may be moved in or out of the optical axis as light conditions warrant. Excludes WINDOW, OPTICAL INSTRUMENT.
Alternate Parts: BG18, BG-18, 10548432, 1240-00-007-8429, 00-007-8429, 1240000078429, 000078429
| Supply Group (FSG) | NSN Assigned | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 12 | JUL 07, 1972 | 00-007-8429 | 13347 ( FILTER, LIGHT, TELESCOPIC INSTRUMENT ) |
REFERENCE DRAWINGS & PICTURES
Cross Reference | NSN 1240-00-007-8429
| Part Number | Cage Code | Manufacturer |
|---|---|---|
| BG-18 | 55736 | SCHOTT GLASS TECHNOLOGIES INC |
| 10548432 | 19200 | US ARMY ARDEC RDECOM |
Technical Data | NSN 1240-00-007-8429
| Characteristic | Specifications |
|---|---|
| OVERALL DIAMETER | 1.670 INCHES NOMINAL |
| OVERALL THICKNESS | 0.130 INCHES NOMINAL |
| SPECIAL FEATURES | WHITE LIGHT TRANSMISSION TO BE AT LEAST 25 PCT;OPTICAL DENSITY AT 0.6943 MICRONS TO BE AT LEAST 5.0;LIGHT DEVIATION NOT TO EXCEED 2 MIN OF ARC;SURFACE QUALITY 80-50 PER MIL SPEC MIL-0-13830;BOTH FLAT SURFACES POLISHED;CHAMFER EDGES 45 DEG |
| FSC APPLICATION DATA | TELESCOPE |