Matl cr-39; flat top; segment positioned 5 mm below and 5 mm in from geometric center for right and left lenses, plus or minus 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 5985-00-330-9882
NSN 5855-00-494-9581
NSN 2925-01-288-2091
NSN 7035-00-166-0339
NSN 5910-01-572-7794
NSN 6150-01-312-7486
NSN 6145-01-186-4760
NSN 6610-01-390-6925
NSN 4140-01-465-1748
NSN 5960-01-264-0996
NSN 5920-01-290-3771
NSN 6645-00-251-0688