A light filter which reduces the intensity of the light without changing the relative spectral distribution of the energy.
NSN 6620-01-116-3983
NSN 5895-00-916-1728
NSN 5945-00-833-7745
NSN 5945-01-179-1457
NSN 6220-01-126-1909
NSN 5925-01-481-5623
NSN 5915-00-487-5099
NSN 5945-00-960-9849
NSN 5990-01-395-4194
NSN 5975-01-332-0820
NSN 6150-01-634-0575
NSN 6645-00-057-3499