Optical Instrument Lens

Features

Specifications

• Diameter:
  1.374 inches
• Axial Thickness:
  0.506 inches and 0.070 inches
• Compound Lensaxial Thickness:
  0.576 inches
• Compound Lens Edge Thickness:
  0.338 inches
• Equivalent Focal Length:
  2.324 inches
• Back Focal Length:
  1.974 inches
• Refraction Index:
  1.5170 and 0.6170
• Abbe Constant:
  64.500 and 66.600
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  -1.529 inches and 1.269 inches
• Element Right Surface Radius:
  -1.529 inches and 6.597 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  Telescope, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-531-6359