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Optical Instrument Lens

Model / MPN: 1240006839549 | NSN: 6650-00-683-9549
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
6650-00-683-9549
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Diameter
2.165 inches
Axial Thickness
0.394 inches and 0.157 inches
Compound Lensaxial Thickness
0.551 inches
Compound Lens Edge Thickness
0.473 inches
Equivalent Focal Length
8.133 inches
Back Focal Length
7.808 inches
Refraction Index
1.5170 and 1.6725
Abbe Constant
63.500 and 32.200
Compound Lens Style
Doublet
Individual Lens Style
Double convex and plano-concave
Element Left Surface Radius
4.213 inches
Element Right Surface Radius
4.213 inches
Material
Glass, optical, mil-g-174, class 1, grade b
Material
Glass, optical, mil-g-174, class 1, grade b
12400 Series Parts

Pricing and Availability

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1240006839549 Cross Reference
  • MIL013830
  • 8574718