Optical Instrument Lens

Features

Specifications

• Diameter:
  Between 2.046 inches and 2.047 inches
• Axial Thickness:
  0.630 inches and 0.118 inches
• Compound Lensaxial Thickness:
  0.74803 inches
• Compound Lens Edge Thickness:
  0.441 inches
• Equivalent Focal Length:
  9.541 inches
• Back Focal Length:
  8.445 inches
• Front Focal Length:
  10.231 inches
• Refraction Index:
  1.5170 and 1.7200
• Abbe Constant:
  64.500 and 29.300
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and double concave
• Element Left Surface Radius:
  -2.047 inches and 2.047 inches
• Element Right Surface Radius:
  -2.047 inches and 11.100 inches
• Material:
  Glass, optical, mil-g-174, class 1, grade b
• Fsc Application Data:
  Optical sighting and ranging equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-210-4387