Model #LD172589GP52

Optical instrument lens (NSN 6650-00-382-1837)

Description

Glass optical material.

Diameter
1.457 inches
Axial Thickness
0.598 inches and 0.138 inches
Compound Lensaxial Thickness
0.736 inches
Compound Lens Edge Thickness
0.478 inches
Equivalent Focal Length
2.265 inches
Back Focal Length
1.739 inches
Front Focal Length
2.324 inches
Refraction Index
1.5730 and 1.6490
Abbe Constant
57.400 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and plano-concave
Element Left Surface Radius
-1.157 inches and 1.157 inches
Element Right Surface Radius
-1.157 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 74 mod 1
Description
Lens,optical Instrument
Cage Code
10001

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Updated: 12/04/2024