zemax can help to design many kinds of optical systems. Here are the basic steps: a{HgIQg_>R
d:pm|C|F
1. make spec for your system `U_>{p&x
2. make initial design s66XdM
3. choose glass materials ?gwbg*
4. analysize the abration and image... R9/xC7l@
5. modify and optimze them (this is the core of the design). S1juAV=
HQ`nq~%&(
To do these, you need to study basic knowledge of geometric optics.