Model #MIL1803

Optical instrument lens (NSN 6650-00-210-4399)

Description

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

Diameter
Between 1.750 inches and 1.752 inches
Axial Thickness
0.370 inches and 0.150 inches
Compound Lensaxial Thickness
0.520 inches
Compound Lens Edge Thickness
0.296 inches
Equivalent Focal Length
3.133 inches
Back Focal Length
3.176 inches
Front Focal Length
2.773 inches
Refraction Index
1.6110 and 1.6490
Abbe Constant
58.800 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
-6.169 inches and 1.700 inches
Element Right Surface Radius
-6.169 inches and 16.598 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