Optical Instrument Lens

Features

Specifications

• Diameter:
  21.0 millimeters
• Axial Thickness:
  2.6 millimeters and 1.0 millimeters
• Compound Lensaxial Thickness:
  3.6 millimeters
• Compound Lens Edge Thickness:
  2.5 millimeters
• Equivalent Focal Length:
  3.978 centimeters
• Back Focal Length:
  3.044 centimeters
• Front Focal Length:
  6.338 centimeters
• Refraction Index:
  1.5170 and 1.6463
• Abbe Constant:
  64.4000 and 34.0000
• Compound Lens Style:
  Doublet
• Individual Lens Style:
  Double convex and plano-concave
• Element Left Surface Radius:
  20.2 millimeters and -14.0 millimeters
• Element Right Surface Radius:
  14.0 millimeters and 0.0 millimeters
• Material:
  Glass, optical
• Federal Supply Class (fsc):
  Optical instruments, test equipment, components and accessories
• National Stock Number (nsn):
  6650-00-382-0653