Optical Instrument Lens

Features

Specifications

• Diameter:
  1.400 inches
• Axial Thickness:
  0.142 inches and 0.236 inches
• Compound Lensaxial Thickness:
  0.378 inches
• Compound Lens Edge Thickness:
  0.333 inches
• Equivalent Focal Length:
  13.189 inches
• Back Focal Length:
  13.192 inches
• Front Focal Length:
  12.814 inches
• Refraction Index:
  1.5230
• Abbe Constant:
  1.605
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Meniscus diverging and double convex
• Element Left Surface Radius:
  6.164 inches
• Element Right Surface Radius:
  2.572 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:
  Range finder, integrated with fire control equip
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-546-9641