zemax can help to design many kinds of optical systems. Here are the basic steps: $TFWum9wO
U\(T<WX,
1. make spec for your system IV|})[n*
2. make initial design @^,9O92l
3. choose glass materials 0[7tJbN
4. analysize the abration and image... \' >d.'d
5. modify and optimze them (this is the core of the design). e{}vT$-
@'JA3V}
To do these, you need to study basic knowledge of geometric optics.