Optical Instrument Lens

Features

Specifications

• Diameter:
  40.0 millimeters
• Axial Thickness:
  Between 7.5 millimeters and 5.0 millimeters
• Compound Lensaxial Thickness:
  12.6 millimeters
• Compound Lens Edge Thickness:
  10.7 millimeters
• Equivalent Focal Length:
  294.840 centimeters
• Back Focal Length:
  288.990 centimeters
• Front Focal Length:
  291.580 centimeters
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus
• Material:
  Glass, optical
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-315-3958