Model #5316357

Optical instrument lens (NSN 6650-00-531-6357)

Special Features
Reflection reducing treatment on front surface, jan-m-621
Description

type 517-645 grade c class 1 mil-g-174 optical type 617-366 or glass grade c class 1 mil-g-174 optical glass material.

Diameter
Between 1.424 inches and 1.427 inches
Axial Thickness
0.064 inches and 0.579 inches
Compound Lensaxial Thickness
Between 0.633 inches and 0.653 inches
Compound Lens Edge Thickness
0.542 inches
Equivalent Focal Length
8.090 inches
Back Focal Length
8.944 inches
Refraction Index
Between 1.6170 and 1.5170
Abbe Constant
36.600 and 64.500
Compound Lens Style
Doublet
Individual Lens Style
Double concave and double convex
Element Left Surface Radius
3.255 inches
Element Right Surface Radius
1.503 inches
Material
Glass, optical, mil-g-174, class 1, grade c, type 617-366 or glass, optical, mil-g-174, class 1, grade c, type 517-645
Fsc Application Data
Telescope bc m65
Description
Lens,optical Instrument
Cage Code
19200

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Updated: 11/21/2024