Model #LD172589GP71

Optical instrument lens (NSN 6650-00-382-1853)

Description

Glass optical material.

Diameter
1.772 inches
Axial Thickness
0.315 inches and 0.158 inches
Compound Lensaxial Thickness
0.473 inches
Compound Lens Edge Thickness
0.413 inches
Equivalent Focal Length
13.029 inches
Back Focal Length
12.770 inches
Front Focal Length
12.987 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
-4.331 inches and 8.189 inches
Element Right Surface Radius
-4.331 inches and -35.433 inches
Material
Glass, optical, mil-g-174, class 1, grade c
Material Specification
Mil-g-174, class 1, grade c military specification single material response
Fsc Application Data
1. Fire control, telescope, mk 53 mod 0
Description
Lens,optical Instrument
Cage Code
53711

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Updated: 05/08/2024