Optical Instrument Lens

Features

Specifications

• Diameter:
  0.834 inches
• End Application:
  Telescope 8587540
• Axial Thickness:
  0.106 inches and 0.279 inches
• Compound Lensaxial Thickness:
  0.385 inches
• Compound Lens Edge Thickness:
  0.250 inches
• Equivalent Focal Length:
  -2.583 inches
• Back Focal Length:
  3.791 inches
• Refraction Index:
  1.6170 and 1.6170
• Abbe Constant:
  36.600 and 54.900
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double concave and double convex
• Element Left Surface Radius:
  -0.314 inches and 1.667 inches
• Element Right Surface Radius:
  1.667 inches and -0.574 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:
  Telescope, panoramic, integrated with fire control equipment
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-891-9850