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Optical Instrument Lens

Model / MPN: 5321551 | NSN: 6650-00-532-1551
ITAR Registered seal

An unmounted, transparent, color free lens which may be treated with a low reflection coating to increase light transmission. Includes single and compound elements. For items having two plane parallel surfaces, see window, optical instrument. Excludes reticle, optical instrument.

Product Details
NATO Stock Number
6650-00-532-1551
Sold in multiples of
DEMIL
NO
Diameter
2.283 inches
Axial Thickness
0.886 inches and 0.157 inches
Compound Lensaxial Thickness
1.043 inches
Compound Lens Edge Thickness
0.729 inches
Equivalent Focal Length
2.998 inches
Back Focal Length
2.753 inches
Front Focal Length
1.710 inches
Refraction Index
1.6970 and 1.7200
Abbe Constant
56.100 and 29.300
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-3.150 inches and 4.911 inches
Element Right Surface Radius
-1.418 inches
Material
Glass, optical, mil-g-174, class 1, grade c
Material
Glass optical
Material Specification
Mil-g-174, class 1, grade c military specification single material response
Fsc Application Data
Telescope, m69g, integrated with fire control equip
53215 Series Parts

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5321551 Cross Reference