Table 1
The quasi-power surface contributions for spherical aberration (QPS) and coma (QPC) differ significantly from the corresponding traditional surface contributions for spherical aberration (Trad. S) and coma (Trad. C). The constant terms (Const.), which are absent (–) in the traditional approach, are also listed in the QPS and QPC columns. The values in the columns Trad. S and Trad. C are identical with the corresponding Seidel coefficients SPHA S1 and COMA S2 listed by Zemax.
| k | zk | Rk | Trad. S | QPS | Trad. C | QPC |
|---|---|---|---|---|---|---|
| 1 | 0.166666 | −2 | 0.000000 | 0.000579 | 0.000000 | 0.000765 |
| 2 | 0.166666 | −1.636363 | −0.000514 | 0.000579 | 0.000408 | −0.000765 |
| 3 | 0.166666 | 18 | 0.000514 | 0.000579 | 0.000816 | 0.000765 |
| 4 | 0.166666 | −18 | 0.000514 | 0.000579 | −0.000816 | −0.000765 |
| 5 | 0.166666 | 1.636363 | −0.000514 | 0.000579 | −0.000408 | 0.000765 |
| 6 | 0.166666 | 2 | 0.000000 | 0.000579 | 0.000000 | −0.000765 |
| Const. | – | – | – | −0.003472 | – | 0.000000 |
| 1 | Total | 0.000000 | 0.000000 | 0.000000 | 0.000000 |
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