Model #7577961

Optical instrument lens (NSN 6650-00-757-7961)

Description

grade c jan-g-174 optical glass material.

Diameter
2.218 inches
Axial Thickness
0.772 inches and 0.131 inches
Compound Lensaxial Thickness
0.903 inches
Compound Lens Edge Thickness
0.502 inches
Equivalent Focal Length
3.708 inches
Back Focal Length
3.288 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
-1.709 inches and 2.563 inches
Element Right Surface Radius
-4.196 inches and 1.709 inches
Material
Glass, optical, jan-g-174, grade c
Fsc Application Data
Telescope, integrated with fire control
Description
Lens,optical Instrument
Cage Code
19200

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Updated: 05/19/2024