Flat top; cr-39; segment positioned 5 mm below and 5 mm in from geometric enter for right and left lenses (porm 2 mm)
A transparent optical element consisting of a major blank and a bifocal segment. The blank and segment have been pressed in a glass mold to an approximate size and shape, and are ground and polished to a finished diopter curvature on one surface only.
Classification: Lens blanks (other than for spectacles) not optically worked, of glass, (optical elements)
NSN 5965-00-549-0220
NSN 2925-01-224-1885
NSN 5965-01-413-4424
NSN 6145-01-343-4287
NSN 6685-00-148-9729
NSN 6650-00-227-8743
NSN 5915-01-336-5544
NSN 5855-01-286-2916
NSN 6620-01-519-2628
NSN 6650-00-098-6128
NSN 6685-01-142-7380
NSN 6650-01-644-3532