Optical Instrument Lens

Features

Specifications

• Diameter:
  Between 2.718 inches and 2.720 inches
• Length:
  0.540 inches
• Axial Thickness:
  0.540 inches
• Equivalent Focal Length:
  4.808 inches
• Back Focal Length:
  4.716 inches
• Front Focal Length:
  4.584 inches
• Single Lens Style:
  Double convex
• Material:
  Glass, optical, mil-g-174
• Material Specification:
  Mil-g-174 military specification single material response
• Fsc Application Data:
  Night vision equip.
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-010-5184
• Special Features:
  Edge inked black