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Optical Instrument Lens

Model / MPN: 8566940 | NSN: 6650-00-789-4017
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
6650-00-789-4017
Sold in multiples of
1 EA
DEMIL
DEMIL/MLI
Diameter
Between 0.942 inches and 0.945 inches
Axial Thickness
Between 0.118 inches and 0.134 inches
Equivalent Focal Length
-2.532 inches
Back Focal Length
-2.605 inches
Refraction Index
1.7200
Abbe Constant
29.300
Single Lens Style
Plano-concave
Element Left Surface Radius
1.823 inches
Element Right Surface Radius
1.823 inches
Material
Glass, optical, mil-g-174, grade b, type 720-293
Material
Glass, optical, mil-g-174, grade b, type 720-293
85669 Series Parts

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8566940 Cross Reference