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Optical Instrument Lens

Model / MPN: Y56169 | NSN: 6650-00-532-1552
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
6650-00-532-1552
Sold in multiples of
DEMIL
NO
Diameter
2.440 inches
Axial Thickness
0.413 inches
Equivalent Focal Length
3.740 inches
Back Focal Length
3.610 inches
Refraction Index
1.6200
Abbe Constant
60.300
Single Lens Style
Double convex
Individual Lens Style
Double convex
Element Left Surface Radius
4.559 inches
Element Right Surface Radius
-4.559 inches
Material
Glass, optical, mil-g-174, class 1, grade c, type 620-603
Material
Glass, optical, mil-g-174, class 1, grade c, type 620-603
Fsc Application Data
Telescope, m76c, integrated with fire control equip
Y5616 Series Parts

Pricing and Availability

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Y56169 Cross Reference
  • 5321552