A direct numerical solution for aspherics to correct spherical aberration in
lens design has been a vexing problem. Often now can use a pair of
aspherics with a brute force approach to correct much of it but the calibration
of such lenses depend on imprecise calculation. A Ph.D. student in
nanotechnology came up with an idea for the solution for this almost mythical
problem while eating bread with Nutella. Less than a day later, the program
confirmed an exact solution.
It should certainly have some simplifying effects on lens design.
Nutella added to grocery list, Mike
Themed Olympus Photo Exhibition: http://www.tope.nl/