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 6220-01-370-6148
NSN 5855-01-381-7493
NSN 6240-01-590-9891
NSN 5990-00-221-0878
NSN 6240-00-351-5659
NSN 5905-01-108-8070
NSN 6220-01-320-7585
NSN 6135-01-332-0431
NSN 6620-00-360-4460
NSN 6220-01-512-2028
NSN 5935-01-312-5264
NSN 5915-01-540-4183