Optical Instrument Lens

Features

Specifications

• Diameter:
  1.142 inches
• Axial Thickness:
  0.150 inches and 0.220 inches
• Compound Lensaxial Thickness:
  0.370 inches
• Compound Lens Edge Thickness:
  0.312 inches
• Equivalent Focal Length:
  5.302 inches
• Back Focal Length:
  5.129 inches
• Refraction Index:
  1.6210 and 1.5410
• Abbe Constant:
  36.200 and 59.900
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Meniscus diverging and double convex
• Element Left Surface Radius:
  3.555 inches
• Element Right Surface Radius:
  1.325 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:
  Telescope, elbow, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-851-3919