Optical Instrument Lens

Features

Specifications

• Diameter:
  1.343 inches
• Length:
  0.884 inches
• Axial Thickness:
  0.468 inches and 0.295 inches
• Compound Lensaxial Thickness:
  0.768 inches
• Compound Lens Edge Thickness:
  0.884 inches
• Equivalent Focal Length:
  6.390 inches
• Back Focal Length:
  5.124 inches
• Refraction Index:
  1.5725 and 1.6490
• Abbe Constant:
  57.400 and 33.800
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Plano-convex and plano-concave
• Element Left Surface Radius:
  -98.717 inches and 1.376 inches
• Element Right Surface Radius:
  -98.717 inches and -0.910 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Fsc Application Data:
  Periscope, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-757-7959