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 5855-01-621-0215
NSN 5960-01-230-9322
NSN 5950-01-400-5942
NSN 4140-01-391-6462
NSN 5855-00-491-7079
NSN 4140-00-150-8265
NSN 6110-01-590-9201
NSN 5905-01-418-6134
NSN 5960-00-834-0571
NSN 5965-00-791-0964
NSN 6650-01-606-0032
NSN 6240-00-252-7695