Flat top; cr-39; segment positioned 5 mm below and 5 mm in from geometric center 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 6110-01-623-9644
NSN 6105-01-095-6807
NSN 2925-00-263-2714
NSN 6650-01-075-8355
NSN 6220-01-279-6220
NSN 4140-01-222-4459
NSN 5999-01-026-1454
NSN 5965-01-413-9205
NSN 5998-01-460-4218
NSN 5895-01-169-7834
NSN 5960-00-503-3115
NSN 6240-01-371-4263