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National Stock Number:
1240-00-007-8429
Federal Supply Class:
1240
National Item Identification Number:
000078429
Description:
FILTER,LIGHT,TELESCOPIC INSTRUME
Detail:
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.
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Manufacturer Information:
| 10548432 | 19200 | US ARMY ARDEC RDECOM | | BG-18 | 55736 | SCHOTT GLASS TECHNOLOGIES INC |
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Techincal Specification:
| FSC APPLICATION DATA | TELESCOPE | | 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 |
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