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

Optical Instrument Lens

Model / MPN: 278694-8 | NSN: 6650-00-155-1356
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
6650-00-155-1356
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Diameter
0.315 inches
Axial Thickness
0.118 inches and 0.039 inches
Compound Lensaxial Thickness
0.157 inches
Compound Lens Edge Thickness
0.134 inches
Equivalent Focal Length
1.110 inches
Back Focal Length
1.033 inches
Front Focal Length
1.065 inches
Refraction Index
1.5740 and 1.6200
Abbe Constant
57.700 and 36.200
Compound Lens Style
Doublet
Individual Lens Style
Double convex and meniscus diverging
Material
Glass, optical, jan-g-174, grade c
Material
Glass, optical, jan-g-174, grade c
Fsc Application Data
Fire control, range finder, mk 57
278694 Series Parts

Pricing and Availability

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278694-8 Cross Reference