Patent Document ID: 20020183994
Application ID: 09259587
Patent Flag: 0

Claim One:
1. Method of designing a lens and optical system, comprising the steps of: deriving a non-error allotted merit function E 0 for a state S 0 which yields no error for prescribed parameters defining the lens system or the optical system; deriving an error allotted merit function E 1, E 2,... for states S 1, S 2,... which import errors to one or more than one parameter; calculating an integrated merit function E&equals;w 0 E 0 &plus;w 1 E 1 &plus;w 2 E 2 &plus;... &equals;&Sgr;w k E k by multiplying weights w k by the merit functions E k and summing up the weighted merit functions; minimizing the integrated merit function by changing values of the parameters; and determining a set of the parameters which minimize the integrated merit function.