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 6145-01-032-6116
NSN 5920-01-216-1981
NSN 6645-01-008-2720
NSN 6130-00-583-9925
NSN 6110-00-081-6335
NSN 6650-01-325-3747
NSN 6240-01-440-2561
NSN 5975-01-334-5968
NSN 6130-01-367-8851
NSN 5930-01-340-8664
NSN 6320-00-809-5744
NSN 6130-01-388-8187