Optical Instrument Lens

Features

Specifications

• Diameter:
  2.187 inches
• Axial Thickness:
  0.222 inches
• Equivalent Focal Length:
  15.097 inches
• Back Focal Length:
  14.900 inches
• Front Focal Length:
  14.678 inches
• Refraction Index:
  1.6200
• Abbe Constant:
  60.300
• Single Lens Style:
  Meniscus converging
• Individual Lens Style:
  Meniscus converging
• Element Left Surface Radius:
  21.030 millimeters
• Element Right Surface Radius:
  6.504 inches
• Material:
  Glass, optical, jan-g-174, grade b
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-955-0568