Optical Instrument Lens

Features

Specifications

• Diameter:
  1.200 inches
• Axial Thickness:
  0.205 inches and 0.142 inches
• Compound Lensaxial Thickness:
  0.347 inches
• Compound Lens Edge Thickness:
  0.342 inches
• Equivalent Focal Length:
  10.629 inches
• Back Focal Length:
  10.570 inches
• Refraction Index:
  1.5230 and 1.6210
• Abbe Constant:
  58.600 and 36.200
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  -2.858 inches and 13.437 inches
• Element Right Surface Radius:
  -2.858 inches and 6.918 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:
  Finder range m12 integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-302-1369