Model #1240006921533

Optical instrument lens (NSN 6650-00-692-1533)

Description

Glass optical material.

Diameter
0.984 inches
Axial Thickness
0.149 inches and 0.119 inches
Compound Lensaxial Thickness
0.268 inches
Compound Lens Edge Thickness
0.239 inches
Equivalent Focal Length
6.217 inches
Back Focal Length
2.879 inches
Refraction Index
1.5170 and 1.6490
Abbe Constant
64.500 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
6.561 inches
Element Right Surface Radius
2.010 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
Sight periscope m28, integrated with fire control equipment
Description
Lens,optical Instrument
Cage Code
SCY13

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Updated: 05/24/2024