Model #LD172589PC111

Optical instrument lens (NSN 6650-00-382-1884)

Description

Glass optical material.

Diameter
1.299 inches
Axial Thickness
0.205 inches and 0.216 inches
Compound Lensaxial Thickness
0.421 inches
Compound Lens Edge Thickness
0.317 inches
Equivalent Focal Length
9.759 inches
Back Focal Length
9.525 inches
Front Focal Length
9.730 inches
Refraction Index
1.5730 and 1.6210
Abbe Constant
57.400 and 36.200
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-3.682 inches and 5.852 inches
Element Right Surface Radius
-3.682 inches and -34.357 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, mk61 mod
Description
Lens,optical Instrument
Cage Code
53711

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Updated: 12/04/2024