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National Stock Number:
6650-01-131-6319
Federal Supply Class:
6650
National Item Identification Number:
011316319
Description:
FILTER,LIGHT,INTERFERENCE
Detail:
A LIGHT TRANSMITTING ITEM CONSISTING OF A TRANSPARENT, FLAT GLASS BODY HAVING TWO PLANE-PARALLEL SURFACES, EITHER WITH ONLY NONABSORBING DIELECTRIC COATINGS OR ABSORBING AND NONABSORBING COATINGS OF A THICKNESS NEARLY EQUIVALENT TO THE WAVELENGTH OF THE TRANSMITTED LIGHT. INTERFERENCE BEGINS AT THE THIN BORDERING SURFACES OF THE COATINGS, THE PENETRATING LIGHT WAVES BEING SUPERIMPOSED ON THE REFLECTED LIGHT WAVES. THE ITEM CAN BE INSTALLED IN VARIOUS OPTICAL INSTURMENTS, TO SERVE AS AN EYE PROTECTING DEVICE.
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Manufacturer Information:
| 13142301-6 | 18876 | U S ARMY AVIATION AND MISSILE COMMAND | | 13142301-6 | 34860 | NORTHROP GRUMMAN SYSTEMS CORPORATION | | 13142301-6 | 82577 | RAYTHEON COMPANY |
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Techincal Specification:
| DIAMETER | 0.800 INCHES MINIMUM AND 0.810 INCHES MAXIMUM | | SPECIAL FEATURES | NEUTRAL DENSITY GLASS;38.0 DB ATTENTUATION |
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