Model #LD172589GP43

Optical instrument lens (NSN 6650-00-382-1831)

Description

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

Diameter
1.417 inches
Axial Thickness
0.236 inches and 0.118 inches
Compound Lensaxial Thickness
0.354 inches
Compound Lens Edge Thickness
0.304 inches
Equivalent Focal Length
9.921 inches
Back Focal Length
9.726 inches
Front Focal Length
9.893 inches
Refraction Index
1.5740 and 1.6210
Abbe Constant
57.700 and 36.600
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-3.370 inches and 6.181 inches
Element Right Surface Radius
-3.370 inches and -28.346 inches
Material
Glass, optical, mil-g-174, class 1, grade b
Fsc Application Data
Fire control, telescope, mk67
Description
Lens,optical Instrument
Cage Code
10001

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Updated: 05/08/2024