Optical Design Study 3

Double Gauss lens

See Double-Gauss example as a model double-Gauss design.

  1. Design a 50-mm focal length f/2.8 double gauss lens with a half-field of view of 24°. Your merit function shoud use standard wavelengths and fractional fields of 0, 0.7, and 1.

  2. Using the design above as a starting point, design a 50-mm focal length f/1.4 double gauss lens with a half-field of view of 24°.

For each lens, provide

  1. a full listing of lens data
  2. a drawing of the lens
  3. rms spot size vs. field
  4. focal length vs. wavelength
  5. ray fans
  6. field plot
  7. spot diagrams

Also generate MTF plots at all fields. Compare the MTF plots of the double-gauss to the corresponding triplet lens.

Maintained by John Loomis, last updated 16 June 2009