Optical Instrument Lens

Features

Specifications

• Diameter:
  1.343 inches
• Axial Thickness:
  0.270 inches
• Compound Lensaxial Thickness:
  0.270 inches
• Compound Lens Edge Thickness:
  0.188 inches
• Equivalent Focal Length:
  4.540 inches
• Back Focal Length:
  4.356 inches
• Refraction Index:
  1.6170
• Abbe Constant:
  55.000
• Single Lens Style:
  Plano-convex
• Individual Lens Style:
  Plano-convex
• Element Left Surface Radius:
  2.549 inches
• Element Right Surface Radius:
  27.234 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  Periscope, m14a1, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-757-8043