Model #820003

Optical instrument lens (NSN 6650-00-621-2930)

Description

Glass optical material.

Diameter
Between 0.965 inches and 0.968 inches
Axial Thickness
0.380 inches and 0.090 inches
Compound Lensaxial Thickness
Between 0.450 inches and 0.490 inches
Compound Lens Edge Thickness
0.341 inches
Equivalent Focal Length
2.686 inches
Back Focal Length
2.231 inches
Refraction Index
1.7200 and 1.5170
Abbe Constant
29.300 and 64.500
Compound Lens Style
Doublet
Individual Lens Style
Double convex and double concave
Element Left Surface Radius
-1.202 inches and 0.885 inches
Element Right Surface Radius
-1.202 inches and 8.841 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
Rangefinder m17c
Description
Lens,optical Instrument
Cage Code
22255

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Updated: 11/24/2024