Model #LD172589PC38

Optical instrument lens (NSN 6650-00-382-1826)

Description

Glass optical material.

Diameter
1.929 inches
Axial Thickness
0.748 inches and 0.158 inches
Compound Lensaxial Thickness
0.906 inches
Compound Lens Edge Thickness
0.557 inches
Equivalent Focal Length
3.451 inches
Back Focal Length
3.569 inches
Front Focal Length
2.762 inches
Refraction Index
1.5170 and 1.6210
Abbe Constant
64.300 and 36.600
Compound Lens Style
Doublet
Individual Lens Style
Double convex and plano-concave
Element Left Surface Radius
-1.488 inches and 1.488 inches
Element Right Surface Radius
-1.488 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
Fire control, telescope mk 63
Description
Lens,optical Instrument
Cage Code
53711

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Updated: 12/11/2024