Model #LD172589GP125

Optical instrument lens (NSN 6650-00-382-1897)

Description

Glass optical material.

Diameter
1.181 inches
Axial Thickness
0.354 inches and 0.118 inches
Compound Lensaxial Thickness
0.472 inches
Compound Lens Edge Thickness
0.189 inches
Equivalent Focal Length
2.544 inches
Back Focal Length
2.448 inches
Front Focal Length
2.323 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 meniscus diverging
Element Left Surface Radius
-1.122 inches and 1.705 inches
Element Right Surface Radius
-1.122 inches and -3.228 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 77, mod1
Description
Lens,optical Instrument
Cage Code
06175

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Updated: 05/08/2024