Optical Instrument Lens

Features

Specifications

• Diameter:
  1.250 inches
• Axial Thickness:
  0.500 inches
• Equivalent Focal Length:
  1.0273 inches
• Back Focal Length:
  0.9026 inches
• Front Focal Length:
  0.8073 inches
• Refraction Index:
  1.5725
• Abbe Constant:
  57.400
• Single Lens Style:
  Double convex
• Individual Lens Style:
  Double convex
• Element Left Surface Radius:
  1.500 inches
• Element Right Surface Radius:
  0.850 inches
• 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:
  Comparator, topographical aircraft bombing fire control
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-809-1817