Optical Instrument Lens

Features

Specifications

• Diameter:
  2.305 inches
• Axial Thickness:
  0.377 inches and 0.121 inches
• Compound Lensaxial Thickness:
  0.498 inches
• Compound Lens Edge Thickness:
  0.375 inches
• Equivalent Focal Length:
  12.797 inches
• Back Focal Length:
  12.504 inches
• Front Focal Length:
  12.106 inches
• Refraction Index:
  1.5230 and 1.6490
• Abbe Constant:
  58.600 and 33.800
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  6.849 inches
• Element Right Surface Radius:
  5.586 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):
  6650-00-964-9279