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Optical Instrument Lens

Model / MPN: 278424-2 | NSN: 6650-00-152-8108
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
6650-00-152-8108
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Diameter
1.693 inches
Axial Thickness
0.236 inches and 0.177 inches
Compound Lensaxial Thickness
0.413 inches
Compound Lens Edge Thickness
0.383 inches
Equivalent Focal Length
28.807 inches
Back Focal Length
28.547 inches
Front Focal Length
28.799 inches
Refraction Index
1.5170 and 1.6170
Abbe Constant
64.500 and 36.600
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-12.110 inches and 13.866 inches
Element Right Surface Radius
-12.110 inches and -108.440 inches
Material
Glass, optical, jan-g-174, grade c
Material
Glass, optical, jan-g-174, grade c
Fsc Application Data
Fire control, range finder mk 46, mod 0
278424 Series Parts

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278424-2 Cross Reference