5670-01-277-1199 MOLDING,METAL Index 5340-01-277-1201 CLAMP,SYNCHRO

National Stock Number:
6650-01-277-1200

Federal Supply Class:
6650

National Item Identification Number:
012771200

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.


Manufacturer Information:
13142301-1318876U S ARMY AVIATION AND MISSILE COMMAND
13142301-134R768ROCKY MOUNTAIN INSTRUMENT CO.


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