Model #LD172589PC94

Optical instrument lens (NSN 6650-00-382-1874)

Description

Glass optical material.

Diameter
2.480 inches
Axial Thickness
0.354 inches and 0.197 inches
Compound Lensaxial Thickness
0.551 inches
Compound Lens Edge Thickness
0.461 inches
Equivalent Focal Length
16.722 inches
Back Focal Length
16.422 inches
Front Focal Length
16.675 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
-5.866 inches and 10.542 inches
Element Right Surface Radius
-5.866 inches and -46.446 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, mk66
Description
Lens,optical Instrument
Cage Code
53711

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Updated: 12/04/2024