Model #7660733

Optical instrument lens (NSN 6650-00-766-0733)

Description

grade b class 1 mil-g-174 optical glass material.

Diameter
1.900 inches
Axial Thickness
0.158 inches and 0.472 inches
Compound Lensaxial Thickness
0.630 inches
Compound Lens Edge Thickness
0.562 inches
Equivalent Focal Length
13.161 inches
Back Focal Length
12.454 inches
Refraction Index
1.5725 and 1.5125
Abbe Constant
42.500 and 60.500
Compound Lens Style
Doublet
Individual Lens Style
Meniscus diverging and meniscus converging
Element Left Surface Radius
3.661 inches
Element Right Surface Radius
1.705 inches
Material
Glass, optical, mil-g-174, class 1, grade b
Fsc Application Data
Periscope, integrated with fire control equipment
Description
Lens,optical Instrument
Cage Code
19200

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Updated: 05/03/2024