Product Features
Front and back surfaces coated with magnesium fluoride
Technical Specifications of NSN
Diameter:
Between 1.236 inches and 1.240 inches
Axial Thickness:
Between 0.101 inches and 0.113 inches and 0.494 inches and 0.506 inches
Compound Lensaxial Thickness:
Between 0.595 inches and 0.619 inches
Equivalent Focal Length:
2.079 inches
Back Focal Length:
1.934 inches
Refraction Index:
1.6490 and 1.5410
Abbe Constant:
33.800 and 59.900
Compound Lens Style:
Doublet
Individual Lens Style:
Meniscus diverging and double convex
Element Left Surface Radius:
2.270 inches
Element Right Surface Radius:
0.828 inches
Material:
Glass, optical, mil-g-174, class 1, grade c, type 649-338 and glass, optical, mil-g-174, class 1, grade c, type 541-599
Material:
Glass, optical, mil-g-174, class 1, grade c, type 649-338 and glass, optical, mil-g-174, class 1, grade c, type 541-599
Fsc Application Data:
Periscope
Item Name:
Objective Lens
Other Related Parts
No other part numbers with same form, fit, and function found.