Optical Instrument Lens

Features

Specifications

• Diameter:
  1.984 inches
• Axial Thickness:
  0.414 inches and 0.125 inches and 0.564 inches
• Compound Lensaxial Thickness:
  1.103 inches
• Compound Lens Edge Thickness:
  0.812 inches
• Equivalent Focal Length:
  9.575 inches
• Back Focal Length:
  10.107 inches
• Refraction Index:
  1.5170 and 1.7200 and 1.5170
• Abbe Constant:
  64.500 and 29.300 and 64.500
• Compound Lens Style:
  Triplet
• Individual Lens Style:
  Plano-convex and plano-concave and double convex
• Element Left Surface Radius:
  17.281 inches
• Element Right Surface Radius:
  1.897 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 equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-759-3587