Model #MIL1801

Optical instrument lens (NSN 6650-00-210-4387)

Description

grade b class 1 mil-g-174 optical glass material.

Diameter
Between 2.046 inches and 2.047 inches
Axial Thickness
0.630 inches and 0.118 inches
Compound Lensaxial Thickness
0.74803 inches
Compound Lens Edge Thickness
0.441 inches
Equivalent Focal Length
9.541 inches
Back Focal Length
8.445 inches
Front Focal Length
10.231 inches
Refraction Index
1.5170 and 1.7200
Abbe Constant
64.500 and 29.300
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
-2.047 inches and 2.047 inches
Element Right Surface Radius
-2.047 inches and 11.100 inches
Material
Glass, optical, mil-g-174, class 1, grade b
Fsc Application Data
Optical sighting and ranging equipment
Description
Lens,optical Instrument
Cage Code
06175

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Updated: 12/04/2024