Optical Instrument Lens

Features

Specifications

• Diameter:
  36.5 millimeters
• End Application:
  Rangefinder mk33
• Axial Thickness:
  3.1 millimeters and 12.0 millimeters
• Compound Lensaxial Thickness:
  15.1 millimeters
• Equivalent Focal Length:
  7.956 centimeters
• Back Focal Length:
  8.196 centimeters
• Front Focal Length:
  6.768 centimeters
• Refraction Index:
  1.6660 and 1.5132
• Abbe Constant:
  32.500 and 64.000
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Plano-concave and double convex
• Element Left Surface Radius:
  0.0 millimeters and 40.2 millimeters
• Element Right Surface Radius:
  -40.2 millimeters and 32.3 millimeters
• Material:
  Glass, optical, jan-g-174
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-130-8462