Optical Instrument Lens

Features

Specifications

• Diameter:
  35.0 millimeters
• End Application:
  Rangefinder mk42
• Axial Thickness:
  6.0 millimeters and 8.9 millimeters
• Compound Lensaxial Thickness:
  22.8 millimeters
• Equivalent Focal Length:
  35.900 centimeters
• Back Focal Length:
  35.900 centimeters
• Refraction Index:
  1.5170 and 1.6170
• Abbe Constant:
  64.500 and 36.600
• Compound Lens Style:
  Dialyte
• Individual Lens Style:
  Meniscus diverging and plano-convex
• Element Left Surface Radius:
  147.3 millimeters and 77.0 millimeters
• Element Right Surface Radius:
  -75.9 millimeters and 0.0 millimeters
• Material:
  Glass, optical, jan-g-174
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-131-7284
• Special Features:
  Reticle mounted on right side of right lens