Optical Instrument Lens

Features

Specifications

• Diameter:
  Between 1.925 inches and 1.929 inches
• Axial Thickness:
  0.276 inches and 0.197 inches
• Compound Lensaxial Thickness:
  0.472 inches
• Compound Lens Edge Thickness:
  0.394 inches
• Equivalent Focal Length:
  14.028 inches
• Back Focal Length:
  13.813 inches
• Front Focal Length:
  13.939 inches
• Refraction Index:
  1.5171 and 1.6489
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Material:
  Glass, optical, mil-g-174, class 1, grade a
• Material Specification:
  Mil-g-174, class 1, grade a military specification single material response
• Fsc Application Data:
  Optical sighting and ranging equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-585-1850