Handbook of Optical Design, 3rd Edition

Appendix 1: Notation and Primary Aberration Coefficients Summary

A1.1  NOTATION

The paraxial variables follow the notation in Table A1.1. Unprimed variables are used before refraction and primed variables are used after refraction on the optical surface. When the next surface is to be considered, a subscript + 1 is used.

There are several kinds of focal lengths, as shown in Table A1.2. For example, the value in the object space (lens illuminated with a collimated beam from right to left) is different from that in the image space (lens illuminated with a collimated beam from left to right). In the first case, an unprimed variable is used, and in the second case, a primed variable is used. When the object and image medium is the same, generally ...