Model #LD172589GP39

Optical instrument lens (NSN 6650-00-382-1827)

Description

Glass optical material.

Diameter
1.772 inches
Axial Thickness
0.669 inches and 0.158 inches
Compound Lensaxial Thickness
0.827 inches
Compound Lens Edge Thickness
0.534 inches
Equivalent Focal Length
2.905 inches
Back Focal Length
2.967 inches
Front Focal Length
2.333 inches
Refraction Index
1.5740 and 1.6490
Abbe Constant
57.700 and 33.400
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: 05/08/2024