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 5960-00-557-6469
NSN 6645-01-559-0902
NSN 5985-00-254-9720
NSN 2925-00-856-0115
NSN 5905-00-141-0743
NSN 5990-01-185-2722
NSN 5910-00-147-0842
NSN 5855-01-634-0259
NSN 2925-01-295-9337
NSN 6110-01-023-8496
NSN 5920-01-192-5535
NSN 5895-00-203-2379