Optical Instrument Lens

Features

Specifications

• Diameter:
  0.689 inches
• Axial Thickness:
  0.335 inches and 0.430 inches
• Compound Lensaxial Thickness:
  0.394 inches
• Compound Lens Edge Thickness:
  0.211 inches
• Equivalent Focal Length:
  1.141 inches
• Back Focal Length:
  0.905 inches
• Refraction Index:
  1.5411 and 1.6170
• Abbe Constant:
  36.600 and 59.900
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  -0.629 inches and 0.473 inches
• Element Right Surface Radius:
  -0.473 inches and 3.351 inches
• Material:
  Glass, optical, jan-g-174, grade c
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-520-4757