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 5998-01-170-5147
NSN 5905-01-362-5596
NSN 5915-00-592-8833
NSN 5930-00-855-5864
NSN 5910-01-558-9720
NSN 7035-01-534-7930
NSN 5985-00-336-5813
NSN 6150-00-010-7632
NSN 2925-01-480-8273
NSN 5930-01-035-4472
NSN 6240-01-456-5413
NSN 5895-00-814-8462