Optical Instrument Lens

Features

Specifications

• Diameter:
  Between 2.104 inches and 2.107 inches
• Axial Thickness:
  Between 0.444 inches and 0.454 inches
• Equivalent Focal Length:
  2.881 inches
• Back Focal Length:
  2.604 inches
• Refraction Index:
  1.6200
• Abbe Constant:
  60.300
• Single Lens Style:
  Plano-convex
• Element Left Surface Radius:
  1.787 inches
• Element Right Surface Radius:
  1.787 inches
• Material:
  Glass, optical, mil-g-174, grade b
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-393-0437