Optical Instrument Lens

Features

Specifications

• Diameter:
  1.700 inches
• Axial Thickness:
  0.225 inches and 0.160 inches
• Compound Lensaxial Thickness:
  0.385 inches
• Compound Lens Edge Thickness:
  0.344 inches
• Equivalent Focal Length:
  10.649 inches
• Back Focal Length:
  10.488 inches
• Front Focal Length:
  10.103 inches
• Refraction Index:
  1.5110 and 1.6490
• Abbe Constant:
  63.500 and 33.800
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and double concave
• Element Left Surface Radius:
  6.946 inches and -4.336 inches
• Element Right Surface Radius:
  -4.336 inches and -12.338 inches
• Material:
  Glass, optical, mil-g-174, class 1, grade b
• Fsc Application Data:
  Range finder m12, integrated with fire control equip
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-763-2694