Optical Instrument Lens

Features

Specifications

• Diameter:
  50.0 millimeters
• Axial Thickness:
  3.7 millimeters and 7.5 millimeters
• Compound Lensaxial Thickness:
  11.2 millimeters
• Compound Lens Edge Thickness:
  11.0 millimeters
• Equivalent Focal Length:
  18.460 centimeters
• Back Focal Length:
  19.490 centimeters
• Front Focal Length:
  18.170 centimeters
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double concave and double convex
• Material:
  Glass, optical
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-382-1749