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Worldwide distributor of NSN parts and consumables located in the USA.

Optical Instrument Lens

Model / MPN: 178697PC8 | NSN: 6650-00-155-1757
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
6650-00-155-1757
Sold in multiples of
DEMIL
DEMIL/MLI
Diameter
0.630 inches
Axial Thickness
0.216 inches and 0.082 inches
Compound Lensaxial Thickness
0.299 inches
Compound Lens Edge Thickness
0.279 inches
Equivalent Focal Length
3.586 inches
Back Focal Length
3.444 inches
Front Focal Length
3.539 inches
Refraction Index
1.5720 and 1.6170
Abbe Constant
57.400 and 36.600
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
-1.031 inches and 2.574 inches
Element Right Surface Radius
-1.031 inches and -6.023 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 15 mod 4
178697PC Series Parts

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178697PC8 Cross Reference