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National Stock Number:
6650-01-058-0048
Federal Supply Class:
6650
National Item Identification Number:
010580048
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:
| 7361254-2 | 07869 | AIR FORCE CAMBRIDGE RESEARCH LABORATORIES L G HANSCOM FIELD |
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Techincal Specification:
| DIAMETER | 1.200 INCHES MINIMUM AND 1.210 INCHES MAXIMUM | | SPECIAL FEATURES | PERMITS XMISSION OF 50 TO 60 PCT WAVELENGTH 6100 ANGSTROM UNITS;INTREGAL TRIMMING FILTER TO EXCLUDE LIGHT FROM 3000 ANGSTROMS THRU 1.2 MICRONS IN THE INFRARED | | THICKNESS | 0.216 INCHES MINIMUM AND 0.256 INCHES MAXIMUM |
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