Model #278694PC2

Optical instrument lens (NSN 6650-00-155-1361)

Description

jan-g-174 optical glass material.

Diameter
Between 38.7 millimeters and 39.2 millimeters
End Application
Rangefinder mk57
Axial Thickness
8.2 millimeters and 4.0 millimeters
Compound Lensaxial Thickness
12.2 millimeters
Equivalent Focal Length
36.360 centimeters
Back Focal Length
36.400 centimeters
Front Focal Length
35.040 centimeters
Refraction Index
1.5170 and 1.6210
Abbe Constant
64.800 and 36.200
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
186.2 millimeters and -155.5 millimeters
Element Right Surface Radius
155.5 millimeters and 1001.8 millimeters
Material
Glass, optical, jan-g-174
Description
Lens,optical Instrument
Cage Code
10001

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Updated: 05/08/2024