Optical Instrument Lens

Features

Specifications

• Diameter:
  1.634 inches
• Axial Thickness:
  0.343 inches
• Equivalent Focal Length:
  2.506 inches
• Back Focal Length:
  2.385 inches
• Refraction Index:
  1.6170
• Abbe Constant:
  55.000
• Single Lens Style:
  Double convex
• Individual Lens Style:
  Double convex and meniscus diverging
• Element Left Surface Radius:
  2.701 inches
• Element Right Surface Radius:
  3.442 inches
• Material:
  Glass, optical, mil-g-174, class 1, grade c
• Material Specification:
  Mil-g-174, class 1, grade c military specification single material response
• Fsc Application Data:
  Periscope m15, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-757-5134