Optical Instrument Lens

Features

Specifications

• Diameter:
  1.181 inches
• Axial Thickness:
  0.079 inches and 0.496 inches
• Compound Lensaxial Thickness:
  0.575 inches
• Compound Lens Edge Thickness:
  0.425 inches
• Equivalent Focal Length:
  2.596 inches
• Back Focal Length:
  2.660 inches
• Front Focal Length:
  2.085 inches
• Refraction Index:
  1.6490 and 1.5720
• Abbe Constant:
  33.800 and 57.400
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  59.206 millimeters
• Element Right Surface Radius:
  0.841 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, elbow, integrated with fire control equip
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-518-2961