Optical Instrument Lens

Features

Specifications

• Diameter:
  0.847 inches
• Axial Thickness:
  0.079 inches and 0.193 inches
• Compound Lensaxial Thickness:
  0.272 inches
• Compound Lens Edge Thickness:
  0.221 inches
• Equivalent Focal Length:
  7.205 inches
• Back Focal Length:
  5.776 inches
• Front Focal Length:
  5.217 inches
• Refraction Index:
  1.7200 and 1.5740
• Abbe Constant:
  29.300 and 57.700
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and double concave
• Element Left Surface Radius:
  -1.248 inches and 3.937 inches
• Element Right Surface Radius:
  -1.248 inches and -1.248 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:
  Fire control, telescope, mk 104 mod 0
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-382-1889