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 7035-00-238-3662
NSN 5985-01-433-2242
NSN 5998-00-857-9569
NSN 5920-01-409-0472
NSN 6645-00-796-7206
NSN 2925-01-137-4062
NSN 2925-00-891-5959
NSN 5930-00-487-5000
NSN 5920-00-009-6818
NSN 6685-01-302-4242
NSN 6130-01-413-0682
NSN 5950-01-240-1686