Features
grade c jan-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
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Diameter:
1.259 inches
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Axial Thickness:
0.220 inches and 0.118 inches
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Compound Lens Edge Thickness:
0.225 inches
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Equivalent Focal Length:
5.191 inches
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Back Focal Length:
5.012 inches
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Refraction Index:
1.5411 and 1.6210
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Abbe Constant:
59.900 and 36.200
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Compound Lens Style:
Doublet
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Individual Lens Style:
Double convex and meniscus converging
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Element Left Surface Radius:
3.130 inches
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Element Right Surface Radius:
2.047 inches
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Material:
Glass, optical, jan-g-174, grade c
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Fsc Application Data:
Binocular, fire control
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-00-518-5193