Model #278694PC3

Optical instrument lens (NSN 6650-00-155-1360)

Description

jan-g-174 optical glass material.

Diameter
39.2 millimeters
End Application
Rangefinder mk57
Axial Thickness
8.2 millimeters and 4.0 millimeters and 4.5 millimeters
Compound Lensaxial Thickness
73.1 millimeters
Equivalent Focal Length
43.090 centimeters or 199.610 centimeters or 35.050 centimeters
Back Focal Length
43.050 centimeters or 199.610 centimeters or 30.630 centimeters
Front Focal Length
42.230 centimeters or 199.810 centimeters or 30.630 centimeters
Refraction Index
1.5170 and 1.8170 and 1.5170
Abbe Constant
64.500 and 36.600 and 64.500
Compound Lens Style
Dialyte
Individual Lens Style
Double convex and meniscus diverging and plano-convex
Element Left Surface Radius
196.1 millimeters and -171.0 millimeters and 1033.0 millimeters
Element Right Surface Radius
171.0 millimeters and 2090.2 millimeters and 0.0 millimeters
Material
Glass, optical, jan-g-174
Description
Lens,optical Instrument
Cage Code
10001

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Updated: 11/21/2024