zemax can help to design many kinds of optical systems. Here are the basic steps: .Iv`B:4
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1. make spec for your system A2I\T,Z
2. make initial design .zvvk
3. choose glass materials Q,R|VI6Co
4. analysize the abration and image... +@anYtv%7
5. modify and optimze them (this is the core of the design). NtQ#su$
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To do these, you need to study basic knowledge of geometric optics.