Optical Instrument Lens

Features

Specifications

• Diameter:
  50.000 millimeters
• Axial Thickness:
  7.000 inches and 4.500 inches
• Compound Lensaxial Thickness:
  11.500 millimeters
• Compound Lens Edge Thickness:
  9.000 millimeters
• Equivalent Focal Length:
  23.416 centimeters
• Back Focal Length:
  22.030 centimeters
• Front Focal Length:
  24.145 centimeters
• Refraction Index:
  1.6170 and 1.6890
• Abbe Constant:
  55.000 and 30.900
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Plano-convex and plano-concave
• Element Left Surface Radius:
  72.460 millimeters and 485.290 millimeters
• Element Right Surface Radius:
  485.290 millimeters and 158.060 millimeters
• Material:
  Glass
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-820-4577