Features
grade b class 1 mil-g-174 optical glass material.
Includes quality control certificate of conformance.
Specifications
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Diameter:
Between 2.16338 inches and 2.16535 inches
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Axial Thickness:
0.47244 inches
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Equivalent Focal Length:
4.043 inches
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Back Focal Length:
3.850 inches
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Front Focal Length:
3.917 inches
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Refraction Index:
1.5300
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Abbe Constant:
51.800
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Single Lens Style:
Double convex
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Individual Lens Style:
Double convex
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Element Left Surface Radius:
3.471 inches
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Element Right Surface Radius:
-5.331 inches
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Material:
Glass, optical, mil-g-174, class 1, grade b
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Fsc Application Data:
1. Optical sighting and ranging equipment
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Federal Supply Class (fsc):
Optical instruments, test equipment, components and accessories
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National Stock Number (nsn):
6650-00-382-1739