A transparent molded optical element having equal spherical diopter curvatures, an approximate size and shape, and has been ground and polished to a finished curvature on one surface only.
Classification: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)
NSN 6650-01-451-1372
NSN 4140-00-441-4184
NSN 5996-00-518-0460
NSN 5996-01-435-5547
NSN 6620-01-527-9798
NSN 5965-01-441-1525
NSN 6685-00-176-5883
NSN 5935-01-133-8671
NSN 5905-00-222-6137
NSN 5990-01-548-3711
NSN 5950-01-153-2650
NSN 7035-01-352-6235