Model #68-701

Optical instrument lens (NSN 6650-00-820-4577)

Description

Glass material.

Diameter
50.000 millimeters
Axial Thickness
7.000 inches and 4.500 inches
Compound Lensaxial Thickness
11.500 millimeters
Compound Lens Edge Thickness
9.000 millimeters
Equivalent Focal Length
23.416 centimeters
Back Focal Length
22.030 centimeters
Front Focal Length
24.145 centimeters
Refraction Index
1.6170 and 1.6890
Abbe Constant
55.000 and 30.900
Compound Lens Style
Doublet
Individual Lens Style
Plano-convex and plano-concave
Element Left Surface Radius
72.460 millimeters and 485.290 millimeters
Element Right Surface Radius
485.290 millimeters and 158.060 millimeters
Material
Glass
Description
Lens,optical Instrument
Cage Code
78039

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Updated: 11/21/2024