Optical Instrument Lens

Features

Specifications

• Diameter:
  1.395 inches
• Length:
  0.561 inches
• Axial Thickness:
  0.150 inches and 0.410 inches
• Compound Lensaxial Thickness:
  0.561 inches
• Compound Lens Edge Thickness:
  0.875 inches
• Refraction Index:
  1.6970 and 1.7510
• Abbe Constant:
  6.200 and 27.700
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Meniscus diverging and plano-convex
• Element Left Surface Radius:
  6.134 inches and 1.851 inches
• Element Right Surface Radius:
  1.851 inches and 6.134 inches
• Material:
  Glass, optical, mil-g-174, grade c, type 697-562 and glass, optical, mil-g-174, grade c, type 751-277
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-962-3069
• Special Features:
  Equivalent focal lg 4.916; back focal lg 4.753; front focal lg 4.745