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

Optical Instrument Lens

Model / MPN: 278698PC6 | NSN: 6650-00-155-1749
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
6650-00-155-1749
Sold in multiples of
* special requirements. EA
DEMIL
DEMIL/MLI
Diameter
51.0 millimeters
End Application
Rangefinder mk51
Axial Thickness
9.4 millimeters and 5.3 millimeters
Compound Lensaxial Thickness
19.1 millimeters
Equivalent Focal Length
44.580 centimeters
Back Focal Length
48.720 centimeters
Front Focal Length
48.070 centimeters
Refraction Index
1.9170 and 1.9170
Abbe Constant
64.500 and 36.600
Compound Lens Style
Dialyte
Individual Lens Style
Double convex and meniscus diverging
Element Left Surface Radius
241.4 millimeters and -155.5 millimeters
Element Right Surface Radius
159.9 millimeters and 906.3 millimeters
Material
Glass
Material
Glass
278698PC Series Parts

Pricing and Availability

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278698PC6 Cross Reference
  • 278698PC6