Optical Instrument Lens

Features

Specifications

• Diameter:
  0.964 inches
• Axial Thickness:
  0.078 inches and 0.314 inches
• Compound Lensaxial Thickness:
  0.393 inches
• Compound Lens Edge Thickness:
  0.241 inches
• Equivalent Focal Length:
  1.590 inches
• Back Focal Length:
  1.390 inches
• Front Focal Length:
  1.555 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:
  3.711 inches and 0.850 inches
• Element Right Surface Radius:
  -1.027 inches and 0.850 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  Fire control, range finder mk 63
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-155-3294