Optical Instrument Lens

Features

Specifications

• Diameter:
  1.920 inches
• Axial Thickness:
  0.675 inches and 0.104 inches
• Compound Lensaxial Thickness:
  0.779 inches
• Compound Lens Edge Thickness:
  0.399 inches
• Equivalent Focal Length:
  2.967 inches
• Back Focal Length:
  2.602 inches
• Refraction Index:
  1.5170 and 1.6490
• Abbe Constant:
  64.500 and 33.800
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  -1.364 inches and 2.043 inches
• Element Right Surface Radius:
  -3.351 inches and 1.364 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-757-7962