Model #8289260

Optical instrument lens (NSN 6650-00-626-1891)

Description

Glass optical material.

Diameter
1.650 inches
Axial Thickness
0.100 inches and 0.610 inches
Compound Lensaxial Thickness
0.710 inches
Compound Lens Edge Thickness
0.531 inches
Equivalent Focal Length
6.532 inches
Back Focal Length
7.274 inches
Refraction Index
1.6490 and 1.6200
Abbe Constant
33.800 and 60.300
Compound Lens Style
Doublet
Individual Lens Style
Double concave and double convex
Element Left Surface Radius
2.656 inches
Element Right Surface Radius
1.663 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
Periscope, integrated with fire control equipment
Description
Lens,optical Instrument
Cage Code
19200

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Updated: 05/02/2024