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 quali type 80-50 per military specification mil-0-13830; both flat surfaces polished; chamfer edges 45 deg
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.
Classification: Military equipments not identified by kind
NSN 5910-01-448-1916
NSN 5905-00-990-1905
NSN 5835-01-416-6455
NSN 6320-00-476-6898
NSN 5965-00-170-5254
NSN 5915-01-005-9017
NSN 4140-01-501-7623
NSN 5996-01-248-9699
NSN 5985-01-092-7872
NSN 5935-01-127-3099
NSN 5915-01-525-7383
NSN 6135-00-347-0595