Optical Instrument Lens

Features

Specifications

• Diameter:
  22.0 millimeters
• End Application:
  Rangefinder mk42
• Axial Thickness:
  2.0 millimeters and 4.0 millimeters
• Compound Lensaxial Thickness:
  6.0 millimeters
• Equivalent Focal Length:
  34.940 centimeters
• Back Focal Length:
  34.730 centimeters
• Front Focal Length:
  34.760 centimeters
• Refraction Index:
  1.6170 and 1.5185
• Abbe Constant:
  36.600 and 59.600
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Meniscus diverging and double convex
• Element Left Surface Radius:
  269.6 millimeters and 87.8 millimeters
• Element Right Surface Radius:
  -87.8 millimeters and 304.0 millimeters
• Material:
  Glass, optical, jan-g-174
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-143-1604