Optical Instrument Lens

Features

Specifications

• Diameter:
  26.0 millimeters
• Axial Thickness:
  2.0 millimeters and 1.0 millimeters
• Compound Lensaxial Thickness:
  3.0 millimeters
• Equivalent Focal Length:
  3.236 centimeters
• Back Focal Length:
  3.112 centimeters
• Front Focal Length:
  3.168 centimeters
• Refraction Index:
  1.5740 and 1.6170
• Abbe Constant:
  57.600 and 36.600
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  26.5 millimeters and -48.6 millimeters
• Element Right Surface Radius:
  48.6 millimeters and 46.0 millimeters
• Material:
  Glass, optical, jan-g-174
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-389-3507