Model #LD172589GP6

Optical instrument lens (NSN 6650-00-382-1821)

Description

Glass optical material.

Diameter
1.614 inches
Axial Thickness
0.571 inches and 0.138 inches
Compound Lensaxial Thickness
0.709 inches
Compound Lens Edge Thickness
0.426 inches
Equivalent Focal Length
2.538 inches
Back Focal Length
2.047 inches
Front Focal Length
2.591 inches
Refraction Index
1.5720 and 1.6490
Abbe Constant
57.700 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and plano-concave
Element Left Surface Radius
-1.299 inches and 1.299 inches
Element Right Surface Radius
-1.299 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
Description
Lens,optical Instrument
Cage Code
10001

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Updated: 05/04/2024