Caution
The datas entered in the table are saved only if the related "save" button has been activated.
Before saving input datas, all the active cells have to be filled.

The conic constants K and K_y as well as the polynomial parameters A_2n are necessarily numbers.
The focal lengths f_i and f_iy are necessarily non null numbers or "infinite".
The radius of curvature R_y is a non null number or is "infinite".
The pitch of a grating is a strictly positive number and its order is an integer number.

For more details concerning the non spherical surfaces table, see the related tutorial.