Model #8270617

Optical instrument lens (NSN 6650-00-692-1540)

Description

Glass optical material.

Diameter
1.575 inches
Axial Thickness
0.484 inches and 0.092 inches
Compound Lensaxial Thickness
0.576 inches
Compound Lens Edge Thickness
0.436 inches
Equivalent Focal Length
3.729 inches
Back Focal Length
3.169 inches
Refraction Index
1.6380 and 1.6490
Abbe Constant
55.500 and 33.800
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
1.488 inches
Element Right Surface Radius
1.366 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
19200

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Updated: 11/23/2024