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 5935-00-194-7588
NSN 5905-00-351-1630
NSN 5925-01-143-9911
NSN 4140-01-478-7371
NSN 5920-00-317-2219
NSN 5835-01-356-8250
NSN 5935-01-265-4681
NSN 6105-01-445-5247
NSN 6145-01-172-5630
NSN 6650-01-555-8819
NSN 6130-01-457-6166
NSN 5975-01-168-7643