Optical Instrument Lens

Features

Specifications

• Diameter:
  1.772 inches
• Axial Thickness:
  0.295 inches and 0.150 inches
• Compound Lensaxial Thickness:
  0.4448 inches
• Compound Lens Edge Thickness:
  0.424 inches
• Equivalent Focal Length:
  17.276 inches
• Back Focal Length:
  16.640 inches
• Front Focal Length:
  17.652 inches
• Refraction Index:
  1.6110 and 1.6660
• Abbe Constant:
  58.800 and 32.400
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and double concave
• Element Left Surface Radius:
  -2.795 inches and 4.331 inches
• Element Right Surface Radius:
  -2.795 inches and 10.018 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:
  1. Optical sighting ranging equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-382-1807