Optical Instrument Lens

Features

Specifications

• Diameter:
  1.185 inches
• Axial Thickness:
  0.105 inches and 0.484 inches
• Compound Lensaxial Thickness:
  0.589 inches
• Compound Lens Edge Thickness:
  0.468 inches
• Equivalent Focal Length:
  3.426 inches
• Back Focal Length:
  3.654 inches
• Refraction Index:
  1.7200 and 1.5170
• Abbe Constant:
  29.300 and 64.500
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double concave and double convex
• Element Left Surface Radius:
  -11.265 inches and 1.531 inches
• Element Right Surface Radius:
  1.531 inches and -1.128 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:
  Finder, range, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-763-2696