Optical Instrument Lens

Features

Specifications

• Diameter:
  1.4961 inches
• Axial Thickness:
  0.2677 inches
• Compound Lensaxial Thickness:
  0.2677 inches
• Compound Lens Edge Thickness:
  0.0688 inches
• Equivalent Focal Length:
  2.347 inches
• Back Focal Length:
  2.335 inches
• Front Focal Length:
  2.558 inches
• Refraction Index:
  1.6110
• Abbe Constant:
  58.800
• Single Lens Style:
  Meniscus converging
• Individual Lens Style:
  Meniscus converging
• Element Left Surface Radius:
  1.330 inches
• Element Right Surface Radius:
  8.845 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  1. Fire control' telescope mk 97, mod 1
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-382-1716