Flat top; cr-39; segment positioned 5 mm below and 5 mm in from geometric enter 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 5945-01-542-8744
NSN 5965-01-451-7313
NSN 5930-00-757-7353
NSN 5945-00-760-8326
NSN 6130-01-233-8882
NSN 6645-01-473-9179
NSN 5985-01-327-2816
NSN 5855-01-244-9785
NSN 6110-01-554-7406
NSN 5975-00-570-9598
NSN 6685-01-611-0912
NSN 6220-00-877-2150