Optical Instrument Lens

Features

Specifications

• Diameter:
  1.610 inches
• Axial Thickness:
  0.575 inches and 0.097 inches
• Compound Lensaxial Thickness:
  0.672 inches
• Compound Lens Edge Thickness:
  0.313 inches
• Equivalent Focal Length:
  4.174 inches
• Back Focal Length:
  3.509 inches
• Front Focal Length:
  2.837 inches
• Refraction Index:
  1.6200 and 1.7200
• Abbe Constant:
  60.300 and 29.300
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and double concave
• Element Left Surface Radius:
  -1.794 inches and 1.575 inches
• Element Right Surface Radius:
  -1.794 inches and 5.708 inches
• Material:
  Glass, optical, mil-g-174, class 1, grade c
• Material Specification:
  Mil-g-174, class 1, grade c military specification single material response
• Fsc Application Data:
  Telescope integrated with fire control equip
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-964-9278