Optical Design Assignment 4

The following lenses should be f/5.6 with a focal length of 50 mm and half field-of-view of of 24°. Optimize over three fields (0, 16, and 24 degrees) and three wavelengths (d, F, C). Use Schott preferred glasses in these designs.

1. Design an air-spaced triplet lens (see Kidger p 199-204). Use the same crown glass for the outer positive lenses and a flint for the inner negative lens. The stop should be near or at the middle lens. Keep the element thicknesses thin. They are not to be used as variables. We are looking for the classic Cooke triplet design.

2. Try to find both solutions for the Cooke triplet.

3. Design an inside-out triplet lens with the crown as the middle element. How do the powers of the three lenses change for this triplet?

For each lens, provide the ZEMAX data file and

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.

Maintained by John Loomis, last updated 13 June 2012