Model #7660504

Optical instrument lens (NSN 6650-00-864-2942)

Special Features
Plano edge chamfered 0.020 inch at 45 degrees
Description

type 573-574 grade c mil-g-174 optical type 689-309 or glass grade c mil-g-174 optical glass material.

Diameter
Between 0.997 inches and 1.000 inches
Axial Thickness
0.364 inches and 0.121 inches
Compound Lensaxial Thickness
Between 0.465 inches and 0.505 inches
Equivalent Focal Length
2.534 inches
Back Focal Length
2.192 inches
Refraction Index
1.5730 and 1.6890
Abbe Constant
57.400 and 30.900
Compound Lens Style
Doublet
Individual Lens Style
Double convex and plano-concave
Element Left Surface Radius
-1.589 inches and 1.244 inches
Material
Glass, optical, mil-g-174, grade c, type 689-309 or glass, optical, mil-g-174, grade c, type 573-574
Fsc Application Data
Telescope, panoramic
Description
Lens,optical Instrument
Cage Code
03829

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Updated: 11/21/2024