Model #8644284

Optical instrument lens (NSN 6650-00-119-3966)

Special Features
Front and back surfaces coated with magnesium fluoride
Description

type 588-534 grade c class 1 mil-g-174 optical type 649-338 and glass grade c class 1 mil-g-174 optical glass material.

Diameter
Between 3.097 inches and 3.100 inches
Axial Thickness
Between 0.297 inches and 0.317 inches and 0.705 inches and 0.725 inches
Compound Lensaxial Thickness
Between 1.002 inches and 1.042 inches
Equivalent Focal Length
16.560 inches
Back Focal Length
15.807 inches
Refraction Index
1.6490 and 1.5880
Abbe Constant
33.800 and 53.400
Compound Lens Style
Doublet
Individual Lens Style
Double concave and double convex
Element Left Surface Radius
143.191 millimeters
Element Right Surface Radius
6.256 inches
Material
Glass, optical, mil-g-174, class 1, grade c, type 649-338 and glass, optical, mil-g-174, class 1, grade c, type 588-534
Fsc Application Data
Collimator
Description
Lens,optical Instrument
Cage Code
19200

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Updated: 05/04/2024