Detail Specifications
Axial Thickness:
0.158 inches and 0.472 inches
Compound Lensaxial Thickness:
0.630 inches
Compound Lens Edge Thickness:
0.562 inches
Equivalent Focal Length:
13.161 inches
Back Focal Length:
12.454 inches
Refraction Index:
1.5725 and 1.5125
Abbe Constant:
42.500 and 60.500
Compound Lens Style:
Doublet
Individual Lens Style:
Meniscus diverging and meniscus converging
Element Left Surface Radius:
3.661 inches
Element Right Surface Radius:
1.705 inches
Material:
Glass, optical, mil-g-174, class 1, grade b
Material:
Glass, optical, mil-g-174, class 1, grade b
Fsc Application Data:
Periscope, integrated with fire control equipment
Manufacturer Part Numbers
No other part numbers with same form, fit, and function found.