Optical Instrument Lens

Features

Specifications

• Diameter:
  1.124 inches
• Axial Thickness:
  0.098 inches and 0.453 inches
• Compound Lensaxial Thickness:
  0.551 inches
• Compound Lens Edge Thickness:
  0.407 inches
• Equivalent Focal Length:
  2.995 inches
• Back Focal Length:
  3.106 inches
• Refraction Index:
  1.6720 and 1.5170
• Abbe Constant:
  32.200 and 64.500
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Plano-concave and double convex
• Element Left Surface Radius:
  1.300 inches
• Element Right Surface Radius:
  1.259 inches and -1.172 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  Telescope m76c, integrated with fire control
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-531-9069