Optical Instrument Lens

Features

Specifications

• Diameter:
  0.719 inches
• Axial Thickness:
  0.130 inches and 0.064 inches
• Compound Lensaxial Thickness:
  0.194 inches
• Compound Lens Edge Thickness:
  0.171 inches
• Equivalent Focal Length:
  4.004 inches
• Back Focal Length:
  3.911 inches
• Refraction Index:
  1.5170 and 1.6490
• Abbe Constant:
  64.500 and 33.800
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  2.446 inches
• Element Right Surface Radius:
  1.664 inches
• Material:
  Glass, optical, mil-g-174, class 1, grade b
• Fsc Application Data:
  Panoramic telescope, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-504-9913